├── Backup ├── SolarSystem.sln └── SolarSystem.v12.suo ├── ReadMe.md ├── SolarSystem.sln ├── SolarSystem.suo ├── SolarSystem.v12.suo ├── SolarSystem.vcproj ├── SolarSystem.vcproj.F328DDBFE869463.Administrator.user ├── SolarSystem.vcxproj ├── SolarSystem.vcxproj.filters ├── UpgradeLog.htm ├── base.h ├── billboardingtut.pdf ├── bk.png ├── fileSystem.h ├── glDrawer.cpp ├── glDrawer.h ├── glcamera.h ├── glexplosion.cpp ├── glexplosion.h ├── glparticle.cpp ├── glparticle.h ├── glpath.h ├── glskybox.h ├── gltexture.cpp ├── gltexture.h ├── glut.h ├── glut32.dll ├── glut32.lib ├── lodepng.cpp ├── lodepng.h ├── main.cpp ├── particle.png ├── planet.h ├── spawnflash.png ├── test.txt ├── tga.h ├── trail.h ├── vec3.h ├── 冥王星.png ├── 土星.png ├── 地球.png ├── 天王星.png ├── 太阳.png ├── 太阳系1.jpg ├── 太阳系2.jpg ├── 星空图.png ├── 月亮.png ├── 木星.png ├── 水星.png ├── 海王星.png ├── 火星.png └── 金星.png /Backup/SolarSystem.sln: -------------------------------------------------------------------------------- 1 |  2 | Microsoft Visual Studio Solution File, Format Version 9.00 3 | # Visual Studio 2005 4 | Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "SolarSystem", "SolarSystem.vcproj", "{13DAC5FF-0A0E-47C2-8B66-41DC951800F7}" 5 | EndProject 6 | Global 7 | GlobalSection(SolutionConfigurationPlatforms) = preSolution 8 | Debug|Win32 = Debug|Win32 9 | Release|Win32 = Release|Win32 10 | EndGlobalSection 11 | GlobalSection(ProjectConfigurationPlatforms) = postSolution 12 | {13DAC5FF-0A0E-47C2-8B66-41DC951800F7}.Debug|Win32.ActiveCfg = Debug|Win32 13 | {13DAC5FF-0A0E-47C2-8B66-41DC951800F7}.Debug|Win32.Build.0 = Debug|Win32 14 | {13DAC5FF-0A0E-47C2-8B66-41DC951800F7}.Release|Win32.ActiveCfg = Release|Win32 15 | {13DAC5FF-0A0E-47C2-8B66-41DC951800F7}.Release|Win32.Build.0 = Release|Win32 16 | EndGlobalSection 17 | GlobalSection(SolutionProperties) = preSolution 18 | HideSolutionNode = FALSE 19 | EndGlobalSection 20 | EndGlobal 21 | -------------------------------------------------------------------------------- /Backup/SolarSystem.v12.suo: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/Backup/SolarSystem.v12.suo -------------------------------------------------------------------------------- /ReadMe.md: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/ReadMe.md -------------------------------------------------------------------------------- /SolarSystem.sln: -------------------------------------------------------------------------------- 1 |  2 | Microsoft Visual Studio Solution File, Format Version 12.00 3 | # Visual Studio Express 2013 for Windows Desktop 4 | VisualStudioVersion = 12.0.31101.0 5 | MinimumVisualStudioVersion = 10.0.40219.1 6 | Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "SolarSystem", "SolarSystem.vcxproj", "{13DAC5FF-0A0E-47C2-8B66-41DC951800F7}" 7 | EndProject 8 | Global 9 | GlobalSection(SolutionConfigurationPlatforms) = preSolution 10 | Debug|Win32 = Debug|Win32 11 | Release|Win32 = Release|Win32 12 | EndGlobalSection 13 | GlobalSection(ProjectConfigurationPlatforms) = postSolution 14 | {13DAC5FF-0A0E-47C2-8B66-41DC951800F7}.Debug|Win32.ActiveCfg = Debug|Win32 15 | {13DAC5FF-0A0E-47C2-8B66-41DC951800F7}.Debug|Win32.Build.0 = Debug|Win32 16 | {13DAC5FF-0A0E-47C2-8B66-41DC951800F7}.Release|Win32.ActiveCfg = Release|Win32 17 | {13DAC5FF-0A0E-47C2-8B66-41DC951800F7}.Release|Win32.Build.0 = Release|Win32 18 | EndGlobalSection 19 | GlobalSection(SolutionProperties) = preSolution 20 | HideSolutionNode = FALSE 21 | EndGlobalSection 22 | EndGlobal 23 | -------------------------------------------------------------------------------- /SolarSystem.suo: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/SolarSystem.suo -------------------------------------------------------------------------------- /SolarSystem.v12.suo: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/SolarSystem.v12.suo -------------------------------------------------------------------------------- /SolarSystem.vcproj: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/SolarSystem.vcproj -------------------------------------------------------------------------------- /SolarSystem.vcproj.F328DDBFE869463.Administrator.user: -------------------------------------------------------------------------------- 1 | 2 | 7 | 8 | 11 | 35 | 36 | 39 | 63 | 64 | 65 | 66 | -------------------------------------------------------------------------------- /SolarSystem.vcxproj: -------------------------------------------------------------------------------- 1 |  2 | 3 | 4 | 5 | Debug 6 | Win32 7 | 8 | 9 | Release 10 | Win32 11 | 12 | 13 | 14 | {13DAC5FF-0A0E-47C2-8B66-41DC951800F7} 15 | SolarSystem 16 | Win32Proj 17 | 18 | 19 | 20 | Application 21 | v120 22 | Unicode 23 | true 24 | 25 | 26 | Application 27 | v120 28 | Unicode 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | <_ProjectFileVersion>12.0.30501.0 42 | 43 | 44 | $(SolutionDir)$(Configuration)\ 45 | $(Configuration)\ 46 | true 47 | 48 | 49 | $(SolutionDir)$(Configuration)\ 50 | $(Configuration)\ 51 | false 52 | 53 | 54 | 55 | Disabled 56 | WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions) 57 | true 58 | EnableFastChecks 59 | MultiThreadedDebugDLL 60 | 61 | Level3 62 | EditAndContinue 63 | Cdecl 64 | 65 | 66 | true 67 | Console 68 | MachineX86 69 | 70 | 71 | 72 | 73 | WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions) 74 | MultiThreadedDLL 75 | 76 | Level3 77 | ProgramDatabase 78 | 79 | 80 | true 81 | Console 82 | true 83 | true 84 | MachineX86 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 | 103 | 104 | 105 | 106 | 107 | 108 | 109 | 110 | 111 | 112 | 113 | 114 | 115 | -------------------------------------------------------------------------------- /SolarSystem.vcxproj.filters: -------------------------------------------------------------------------------- 1 |  2 | 3 | 4 | 5 | {4FC737F1-C7A5-4376-A066-2A32D752A2FF} 6 | cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx 7 | 8 | 9 | {93995380-89BD-4b04-88EB-625FBE52EBFB} 10 | h;hpp;hxx;hm;inl;inc;xsd 11 | 12 | 13 | {67DA6AB6-F800-4c08-8B7A-83BB121AAD01} 14 | rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav 15 | 16 | 17 | 18 | 19 | 源文件 20 | 21 | 22 | 源文件 23 | 24 | 25 | 源文件 26 | 27 | 28 | 源文件 29 | 30 | 31 | 源文件 32 | 33 | 34 | 源文件 35 | 36 | 37 | 38 | 39 | 头文件 40 | 41 | 42 | 头文件 43 | 44 | 45 | 头文件 46 | 47 | 48 | 头文件 49 | 50 | 51 | 头文件 52 | 53 | 54 | 头文件 55 | 56 | 57 | 头文件 58 | 59 | 60 | 头文件 61 | 62 | 63 | 头文件 64 | 65 | 66 | 头文件 67 | 68 | 69 | 头文件 70 | 71 | 72 | 头文件 73 | 74 | 75 | 76 | 77 | 78 | -------------------------------------------------------------------------------- /UpgradeLog.htm: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/UpgradeLog.htm -------------------------------------------------------------------------------- /base.h: -------------------------------------------------------------------------------- 1 | #ifndef BASE_H 2 | #define BASE_H 3 | #include "windows.h" 4 | #include "glut.h" 5 | #include "stdlib.h" 6 | #include "stdarg.h" 7 | #include "stdio.h" 8 | #include "string.h" 9 | #include "vec3.h" 10 | #endif -------------------------------------------------------------------------------- /billboardingtut.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/billboardingtut.pdf -------------------------------------------------------------------------------- /bk.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/bk.png -------------------------------------------------------------------------------- /fileSystem.h: -------------------------------------------------------------------------------- 1 | #ifndef FILESYSTEM_H 2 | #define FILESYSTEM 3 | #include "base.h" 4 | #include "planet.h" 5 | 6 | class fileSystem 7 | { 8 | FILE *file; 9 | 10 | public: 11 | 12 | fileSystem() : file(NULL){} 13 | 14 | ~fileSystem(){ closeFile(); } 15 | 16 | bool beginWrite(char * fileName) 17 | { 18 | file = fopen(fileName, "w"); 19 | if (!file) 20 | { 21 | return false; 22 | } 23 | return true; 24 | } 25 | 26 | void writeInt(int value) 27 | { 28 | fprintf(file, "%d ", value); 29 | printf("the value is %d\n", value); 30 | } 31 | 32 | void writeDataFrom(planet *p) 33 | { 34 | fprintf(file, "%.6f %.6f %.6f %.6f %.6f %.6f ", p->aroundRotatedSpeed, p->selfRotatedSpeed, p->radius, p->pos.x, p->pos.y, p->pos.z); 35 | } 36 | 37 | bool beginRead(char * fileName) 38 | { 39 | file = fopen(fileName, "r"); 40 | if (!file) 41 | { 42 | return false; 43 | } 44 | return true; 45 | } 46 | 47 | void readInt(int *value) 48 | { 49 | fscanf(file, "%d ", value); 50 | } 51 | 52 | void readDataTo(planet *p) 53 | { 54 | fscanf(file, "%.6f %.6f %.6f %.6f %.6f %.6f ", p->aroundRotatedSpeed, p->selfRotatedSpeed, p->radius, p->pos.x, p->pos.y, p->pos.z); 55 | } 56 | 57 | void closeFile() 58 | { 59 | if (file) 60 | { 61 | fclose(file); 62 | file = NULL; 63 | } 64 | } 65 | }; 66 | #endif -------------------------------------------------------------------------------- /glDrawer.cpp: -------------------------------------------------------------------------------- 1 | #include "glDrawer.h" 2 | GLUquadricObj * m_quad = NULL; 3 | 4 | void drawInit() 5 | { 6 | m_quad = gluNewQuadric(); 7 | } 8 | 9 | void drawDeInit() 10 | { 11 | gluDeleteQuadric(m_quad); 12 | } 13 | 14 | void drawSphere(double radius , int slices, int stack ,bool texture) 15 | { 16 | 17 | gluQuadricTexture(m_quad, true); 18 | gluSphere(m_quad,radius,slices,stack); 19 | } 20 | 21 | void drawDisk(GLdouble innerRadius, 22 | GLdouble outerRadius, 23 | GLint slices ) 24 | { 25 | gluDisk(m_quad,innerRadius, 26 | outerRadius, 27 | slices, 28 | true); 29 | } -------------------------------------------------------------------------------- /glDrawer.h: -------------------------------------------------------------------------------- 1 | #ifndef GLDRAWER_H 2 | #define GLDRAWER_H 3 | #include "base.h" 4 | 5 | 6 | void drawInit(); 7 | void drawSphere(double radius , int slices, int stack,bool texture); 8 | void drawDisk( GLdouble innerRadius, 9 | GLdouble outerRadius, 10 | GLint slices); 11 | void drawDeInit(); 12 | #endif -------------------------------------------------------------------------------- /glcamera.h: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/glcamera.h -------------------------------------------------------------------------------- /glexplosion.cpp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/glexplosion.cpp -------------------------------------------------------------------------------- /glexplosion.h: -------------------------------------------------------------------------------- 1 | #ifndef __EXPLOSION_H_INCLUDED__ 2 | #define __EXPLOSION_H_INCLUDED__ 3 | 4 | #include "glparticle.h" 5 | 6 | const vec3 PARTICLE_VELOCITY (0.0f, 2.0f, 0.0f); 7 | const vec3 VELOCITY_VARIATION (4.0f, 4.0f, 4.0f); 8 | const vec3 PARTICLE_ACCELERATION (0.0f, -5.0f, 0.0f); 9 | const float PARTICLE_SIZE = 3.0f;//5.0f; 10 | const float SIZE_VARIATION = 0.3f;//2.0f; 11 | #define FRAND (((float)rand()-(float)rand())/RAND_MAX) 12 | 13 | class glExplosion : public glParticleSystem 14 | { 15 | public: 16 | glExplosion(int maxParticles, vec3 origin, float spread, GLuint texture); 17 | void Update(float elapsedTime); 18 | void Render(); 19 | bool IsDead() { return m_numParticles == 0; } 20 | 21 | void InitializeParticle(int index); 22 | float m_spread; 23 | GLuint m_texture; 24 | }; 25 | #endif -------------------------------------------------------------------------------- /glparticle.cpp: 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https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/glskybox.h -------------------------------------------------------------------------------- /gltexture.cpp: -------------------------------------------------------------------------------- 1 | #include "gltexture.h" 2 | #include "tga.h" 3 | #include "lodepng.h" 4 | #include 5 | #include 6 | 7 | glTexture::glTexture(const char *fname, 8 | bool make_mipmaps) 9 | { 10 | 11 | std::vector image; 12 | unsigned int width, height; 13 | unsigned int error = lodepng::decode(image, width, height, fname); 14 | 15 | if (error != 0) 16 | { 17 | std::cout << "error " << error << ": " << lodepng_error_text(error) << std::endl; 18 | return; 19 | } 20 | 21 | m_tex = 0; 22 | glEnable(GL_TEXTURE_2D); 23 | glPixelStorei(GL_UNPACK_ALIGNMENT, 1); 24 | 25 | //Get a texture space and make it active 26 | glGenTextures(1, &m_tex); 27 | glBindTexture(GL_TEXTURE_2D, m_tex); 28 | 29 | //Set default(and fastest) texture propoties 30 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP); 31 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP); 32 | glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); 33 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 34 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 35 | 36 | //Determine if mipmaps are used 37 | if (make_mipmaps) 38 | { 39 | gluBuild2DMipmaps(GL_TEXTURE_2D, 4, width, height, GL_RGBA, GL_UNSIGNED_BYTE, &image[0]); 40 | } 41 | else 42 | { 43 | 44 | double xPow2, yPow2; 45 | int ixPow2, iyPow2; 46 | int xSize2, ySize2; 47 | unsigned char* pData = NULL; 48 | 49 | GLint glMaxTexDim; 50 | //Get the maximum texture size 51 | glGetIntegerv(GL_MAX_TEXTURE_SIZE, &glMaxTexDim); 52 | //Get the powers of 2 that correspond to the width and height of the original 53 | //or of the maxmaximum texture size if widthor height is larger than the maxmaximum texture size 54 | if (width <= glMaxTexDim) 55 | xPow2 = log((double)width) / log((double)2.0); 56 | else 57 | xPow2 = log((double)glMaxTexDim) / log((double)2.0); 58 | 59 | if (height <= glMaxTexDim) 60 | yPow2 = log((double)height) / log((double)2.0); 61 | else 62 | yPow2 = log((double)glMaxTexDim) / log((double)2.0); 63 | 64 | //round the power of 2 up to the nearest power of 2 65 | ixPow2 = (int)xPow2; 66 | iyPow2 = (int)yPow2; 67 | 68 | if (xPow2 != (double)ixPow2) 69 | ixPow2++; 70 | if (yPow2 != (double)iyPow2) 71 | iyPow2++; 72 | //convert power to actual value 73 | xSize2 = 1 << ixPow2; 74 | ySize2 = 1 << iyPow2; 75 | //if the new sizes are different than the old ones 76 | //resize and scale the "RGBAImage" 77 | if (xSize2 != width || ySize2 != height) 78 | { 79 | pData = (unsigned char*)malloc(xSize2 * ySize2 * 4 * sizeof(unsigned char)); 80 | 81 | if (!pData) 82 | return; 83 | 84 | gluScaleImage(GL_RGBA, 85 | width, 86 | height, 87 | GL_UNSIGNED_BYTE, 88 | &image[0], 89 | xSize2, 90 | ySize2, 91 | GL_UNSIGNED_BYTE, 92 | pData); 93 | 94 | width = xSize2; 95 | height = ySize2; 96 | } 97 | 98 | glTexImage2D(GL_TEXTURE_2D, 99 | 0, 4, width,height, 100 | 0, GL_RGB, GL_UNSIGNED_BYTE,pData); 101 | 102 | if (pData) 103 | { 104 | free(pData); 105 | pData = NULL; 106 | } 107 | } 108 | } 109 | 110 | 111 | void glTexture::MakeCurrent() 112 | { 113 | glBindTexture(GL_TEXTURE_2D, m_tex); 114 | } 115 | 116 | glTexture::~glTexture() 117 | { 118 | glDeleteTextures(1, &m_tex); 119 | } 120 | 121 | -------------------------------------------------------------------------------- /gltexture.h: -------------------------------------------------------------------------------- 1 | #ifndef GLWARP_H 2 | #define GLWARP_H 3 | #include "base.h" 4 | 5 | class glTexture 6 | { 7 | public: 8 | GLuint m_tex; 9 | glTexture(){m_tex=0;} 10 | 11 | glTexture(const char* fname, 12 | bool make_mipmaps=true); 13 | 14 | ~glTexture(); 15 | 16 | void MakeCurrent(); 17 | }; 18 | 19 | 20 | #endif -------------------------------------------------------------------------------- /glut.h: -------------------------------------------------------------------------------- 1 | #ifndef __glut_h__ 2 | #define __glut_h__ 3 | 4 | /* Copyright (c) Mark J. Kilgard, 1994, 1995, 1996, 1998. */ 5 | 6 | /* This program is freely distributable without licensing fees and is 7 | provided without guarantee or warrantee expressed or implied. This 8 | program is -not- in the public domain. */ 9 | 10 | #if defined(_WIN32) 11 | 12 | /* GLUT 3.7 now tries to avoid including 13 | to avoid name space pollution, but Win32's 14 | needs APIENTRY and WINGDIAPI defined properly. */ 15 | # if 0 16 | /* This would put tons of macros and crap in our clean name space. */ 17 | # define WIN32_LEAN_AND_MEAN 18 | # include 19 | # else 20 | /* XXX This is from Win32's */ 21 | # ifndef APIENTRY 22 | # define GLUT_APIENTRY_DEFINED 23 | # if (_MSC_VER >= 800) || defined(_STDCALL_SUPPORTED) || defined(__BORLANDC__) || defined(__LCC__) 24 | # define APIENTRY __stdcall 25 | # else 26 | # define APIENTRY 27 | # endif 28 | # endif 29 | /* XXX This is from Win32's */ 30 | # ifndef CALLBACK 31 | # if (defined(_M_MRX000) || defined(_M_IX86) || defined(_M_ALPHA) || defined(_M_PPC)) && !defined(MIDL_PASS) || defined(__LCC__) 32 | # define CALLBACK __stdcall 33 | # else 34 | # define CALLBACK 35 | # endif 36 | # endif 37 | /* XXX Hack for lcc compiler. It doesn't support __declspec(dllimport), just __stdcall. */ 38 | # if defined( __LCC__ ) 39 | # undef WINGDIAPI 40 | # define WINGDIAPI __stdcall 41 | # else 42 | /* XXX This is from Win32's and */ 43 | # ifndef WINGDIAPI 44 | # define GLUT_WINGDIAPI_DEFINED 45 | # define WINGDIAPI __declspec(dllimport) 46 | # endif 47 | # endif 48 | /* XXX This is from Win32's */ 49 | # ifndef _WCHAR_T_DEFINED 50 | typedef unsigned short wchar_t; 51 | # define _WCHAR_T_DEFINED 52 | # endif 53 | # endif 54 | 55 | /* To disable automatic library usage for GLUT, define GLUT_NO_LIB_PRAGMA 56 | in your compile preprocessor options. */ 57 | # if !defined(GLUT_BUILDING_LIB) && !defined(GLUT_NO_LIB_PRAGMA) 58 | # pragma comment (lib, "winmm.lib") /* link with Windows MultiMedia lib */ 59 | /* To enable automatic SGI OpenGL for Windows library usage for GLUT, 60 | define GLUT_USE_SGI_OPENGL in your compile preprocessor options. */ 61 | # ifdef GLUT_USE_SGI_OPENGL 62 | # pragma comment (lib, "opengl.lib") /* link with SGI OpenGL for Windows lib */ 63 | # pragma comment (lib, "glu.lib") /* link with SGI OpenGL Utility lib */ 64 | # pragma comment (lib, "glut.lib") /* link with Win32 GLUT for SGI OpenGL lib */ 65 | # else 66 | # pragma comment (lib, "opengl32.lib") /* link with Microsoft OpenGL lib */ 67 | # pragma comment (lib, "glu32.lib") /* link with Microsoft OpenGL Utility lib */ 68 | # pragma comment (lib, "glut32.lib") /* link with Win32 GLUT lib */ 69 | # endif 70 | # endif 71 | 72 | /* To disable supression of annoying warnings about floats being promoted 73 | to doubles, define GLUT_NO_WARNING_DISABLE in your compile preprocessor 74 | options. */ 75 | # ifndef GLUT_NO_WARNING_DISABLE 76 | # pragma warning (disable:4244) /* Disable bogus VC++ 4.2 conversion warnings. */ 77 | # pragma warning (disable:4305) /* VC++ 5.0 version of above warning. */ 78 | # endif 79 | 80 | /* Win32 has an annoying issue where there are multiple C run-time 81 | libraries (CRTs). If the executable is linked with a different CRT 82 | from the GLUT DLL, the GLUT DLL will not share the same CRT static 83 | data seen by the executable. In particular, atexit callbacks registered 84 | in the executable will not be called if GLUT calls its (different) 85 | exit routine). GLUT is typically built with the 86 | "/MD" option (the CRT with multithreading DLL support), but the Visual 87 | C++ linker default is "/ML" (the single threaded CRT). 88 | 89 | One workaround to this issue is requiring users to always link with 90 | the same CRT as GLUT is compiled with. That requires users supply a 91 | non-standard option. GLUT 3.7 has its own built-in workaround where 92 | the executable's "exit" function pointer is covertly passed to GLUT. 93 | GLUT then calls the executable's exit function pointer to ensure that 94 | any "atexit" calls registered by the application are called if GLUT 95 | needs to exit. 96 | 97 | Note that the __glut*WithExit routines should NEVER be called directly. 98 | To avoid the atexit workaround, #define GLUT_DISABLE_ATEXIT_HACK. */ 99 | 100 | /* XXX This is from Win32's */ 101 | # if !defined(_MSC_VER) && !defined(__cdecl) 102 | /* Define __cdecl for non-Microsoft compilers. */ 103 | # define __cdecl 104 | # define GLUT_DEFINED___CDECL 105 | # endif 106 | # ifndef _CRTIMP 107 | # ifdef _NTSDK 108 | /* Definition compatible with NT SDK */ 109 | # define _CRTIMP 110 | # else 111 | /* Current definition */ 112 | # ifdef _DLL 113 | # define _CRTIMP __declspec(dllimport) 114 | # else 115 | # define _CRTIMP 116 | # endif 117 | # endif 118 | # define GLUT_DEFINED__CRTIMP 119 | # endif 120 | 121 | /* GLUT API entry point declarations for Win32. */ 122 | # ifdef GLUT_BUILDING_LIB 123 | # define GLUTAPI __declspec(dllexport) 124 | # else 125 | # ifdef _DLL 126 | # define GLUTAPI __declspec(dllimport) 127 | # else 128 | # define GLUTAPI extern 129 | # endif 130 | # endif 131 | 132 | /* GLUT callback calling convention for Win32. */ 133 | # define GLUTCALLBACK __cdecl 134 | 135 | #endif /* _WIN32 */ 136 | 137 | #include 138 | #include 139 | 140 | #ifdef __cplusplus 141 | extern "C" { 142 | #endif 143 | 144 | #if defined(_WIN32) 145 | # ifndef GLUT_BUILDING_LIB 146 | extern _CRTIMP void __cdecl exit(int); 147 | # endif 148 | #else 149 | /* non-Win32 case. */ 150 | /* Define APIENTRY and CALLBACK to nothing if we aren't on Win32. */ 151 | # define APIENTRY 152 | # define GLUT_APIENTRY_DEFINED 153 | # define CALLBACK 154 | /* Define GLUTAPI and GLUTCALLBACK as below if we aren't on Win32. */ 155 | # define GLUTAPI extern 156 | # define GLUTCALLBACK 157 | /* Prototype exit for the non-Win32 case (see above). */ 158 | extern void exit(int); 159 | #endif 160 | 161 | /** 162 | GLUT API revision history: 163 | 164 | GLUT_API_VERSION is updated to reflect incompatible GLUT 165 | API changes (interface changes, semantic changes, deletions, 166 | or additions). 167 | 168 | GLUT_API_VERSION=1 First public release of GLUT. 11/29/94 169 | 170 | GLUT_API_VERSION=2 Added support for OpenGL/GLX multisampling, 171 | extension. Supports new input devices like tablet, dial and button 172 | box, and Spaceball. Easy to query OpenGL extensions. 173 | 174 | GLUT_API_VERSION=3 glutMenuStatus added. 175 | 176 | GLUT_API_VERSION=4 glutInitDisplayString, glutWarpPointer, 177 | glutBitmapLength, glutStrokeLength, glutWindowStatusFunc, dynamic 178 | video resize subAPI, glutPostWindowRedisplay, glutKeyboardUpFunc, 179 | glutSpecialUpFunc, glutIgnoreKeyRepeat, glutSetKeyRepeat, 180 | glutJoystickFunc, glutForceJoystickFunc (NOT FINALIZED!). 181 | **/ 182 | #ifndef GLUT_API_VERSION /* allow this to be overriden */ 183 | #define GLUT_API_VERSION 3 184 | #endif 185 | 186 | /** 187 | GLUT implementation revision history: 188 | 189 | GLUT_XLIB_IMPLEMENTATION is updated to reflect both GLUT 190 | API revisions and implementation revisions (ie, bug fixes). 191 | 192 | GLUT_XLIB_IMPLEMENTATION=1 mjk's first public release of 193 | GLUT Xlib-based implementation. 11/29/94 194 | 195 | GLUT_XLIB_IMPLEMENTATION=2 mjk's second public release of 196 | GLUT Xlib-based implementation providing GLUT version 2 197 | interfaces. 198 | 199 | GLUT_XLIB_IMPLEMENTATION=3 mjk's GLUT 2.2 images. 4/17/95 200 | 201 | GLUT_XLIB_IMPLEMENTATION=4 mjk's GLUT 2.3 images. 6/?/95 202 | 203 | GLUT_XLIB_IMPLEMENTATION=5 mjk's GLUT 3.0 images. 10/?/95 204 | 205 | GLUT_XLIB_IMPLEMENTATION=7 mjk's GLUT 3.1+ with glutWarpPoitner. 7/24/96 206 | 207 | GLUT_XLIB_IMPLEMENTATION=8 mjk's GLUT 3.1+ with glutWarpPoitner 208 | and video resize. 1/3/97 209 | 210 | GLUT_XLIB_IMPLEMENTATION=9 mjk's GLUT 3.4 release with early GLUT 4 routines. 211 | 212 | GLUT_XLIB_IMPLEMENTATION=11 Mesa 2.5's GLUT 3.6 release. 213 | 214 | GLUT_XLIB_IMPLEMENTATION=12 mjk's GLUT 3.6 release with early GLUT 4 routines + signal handling. 215 | 216 | GLUT_XLIB_IMPLEMENTATION=13 mjk's GLUT 3.7 beta with GameGLUT support. 217 | 218 | GLUT_XLIB_IMPLEMENTATION=14 mjk's GLUT 3.7 beta with f90gl friend interface. 219 | 220 | GLUT_XLIB_IMPLEMENTATION=15 mjk's GLUT 3.7 beta sync'ed with Mesa 221 | **/ 222 | #ifndef GLUT_XLIB_IMPLEMENTATION /* Allow this to be overriden. */ 223 | #define GLUT_XLIB_IMPLEMENTATION 15 224 | #endif 225 | 226 | /* Display mode bit masks. */ 227 | #define GLUT_RGB 0 228 | #define GLUT_RGBA GLUT_RGB 229 | #define GLUT_INDEX 1 230 | #define GLUT_SINGLE 0 231 | #define GLUT_DOUBLE 2 232 | #define GLUT_ACCUM 4 233 | #define GLUT_ALPHA 8 234 | #define GLUT_DEPTH 16 235 | #define GLUT_STENCIL 32 236 | #if (GLUT_API_VERSION >= 2) 237 | #define GLUT_MULTISAMPLE 128 238 | #define GLUT_STEREO 256 239 | #endif 240 | #if (GLUT_API_VERSION >= 3) 241 | #define GLUT_LUMINANCE 512 242 | #endif 243 | 244 | /* Mouse buttons. */ 245 | #define GLUT_LEFT_BUTTON 0 246 | #define GLUT_MIDDLE_BUTTON 1 247 | #define GLUT_RIGHT_BUTTON 2 248 | 249 | /* Mouse button state. */ 250 | #define GLUT_DOWN 0 251 | #define GLUT_UP 1 252 | 253 | #if (GLUT_API_VERSION >= 2) 254 | /* function keys */ 255 | #define GLUT_KEY_F1 1 256 | #define GLUT_KEY_F2 2 257 | #define GLUT_KEY_F3 3 258 | #define GLUT_KEY_F4 4 259 | #define GLUT_KEY_F5 5 260 | #define GLUT_KEY_F6 6 261 | #define GLUT_KEY_F7 7 262 | #define GLUT_KEY_F8 8 263 | #define GLUT_KEY_F9 9 264 | #define GLUT_KEY_F10 10 265 | #define GLUT_KEY_F11 11 266 | #define GLUT_KEY_F12 12 267 | /* directional keys */ 268 | #define GLUT_KEY_LEFT 100 269 | #define GLUT_KEY_UP 101 270 | #define GLUT_KEY_RIGHT 102 271 | #define GLUT_KEY_DOWN 103 272 | #define GLUT_KEY_PAGE_UP 104 273 | #define GLUT_KEY_PAGE_DOWN 105 274 | #define GLUT_KEY_HOME 106 275 | #define GLUT_KEY_END 107 276 | #define GLUT_KEY_INSERT 108 277 | #endif 278 | 279 | /* Entry/exit state. */ 280 | #define GLUT_LEFT 0 281 | #define GLUT_ENTERED 1 282 | 283 | /* Menu usage state. */ 284 | #define GLUT_MENU_NOT_IN_USE 0 285 | #define GLUT_MENU_IN_USE 1 286 | 287 | /* Visibility state. */ 288 | #define GLUT_NOT_VISIBLE 0 289 | #define GLUT_VISIBLE 1 290 | 291 | /* Window status state. */ 292 | #define GLUT_HIDDEN 0 293 | #define GLUT_FULLY_RETAINED 1 294 | #define GLUT_PARTIALLY_RETAINED 2 295 | #define GLUT_FULLY_COVERED 3 296 | 297 | /* Color index component selection values. */ 298 | #define GLUT_RED 0 299 | #define GLUT_GREEN 1 300 | #define GLUT_BLUE 2 301 | 302 | #if defined(_WIN32) 303 | /* Stroke font constants (use these in GLUT program). */ 304 | #define GLUT_STROKE_ROMAN ((void*)0) 305 | #define GLUT_STROKE_MONO_ROMAN ((void*)1) 306 | 307 | /* Bitmap font constants (use these in GLUT program). */ 308 | #define GLUT_BITMAP_9_BY_15 ((void*)2) 309 | #define GLUT_BITMAP_8_BY_13 ((void*)3) 310 | #define GLUT_BITMAP_TIMES_ROMAN_10 ((void*)4) 311 | #define GLUT_BITMAP_TIMES_ROMAN_24 ((void*)5) 312 | #if (GLUT_API_VERSION >= 3) 313 | #define GLUT_BITMAP_HELVETICA_10 ((void*)6) 314 | #define GLUT_BITMAP_HELVETICA_12 ((void*)7) 315 | #define GLUT_BITMAP_HELVETICA_18 ((void*)8) 316 | #endif 317 | #else 318 | /* Stroke font opaque addresses (use constants instead in source code). */ 319 | GLUTAPI void *glutStrokeRoman; 320 | GLUTAPI void *glutStrokeMonoRoman; 321 | 322 | /* Stroke font constants (use these in GLUT program). */ 323 | #define GLUT_STROKE_ROMAN (&glutStrokeRoman) 324 | #define GLUT_STROKE_MONO_ROMAN (&glutStrokeMonoRoman) 325 | 326 | /* Bitmap font opaque addresses (use constants instead in source code). */ 327 | GLUTAPI void *glutBitmap9By15; 328 | GLUTAPI void *glutBitmap8By13; 329 | GLUTAPI void *glutBitmapTimesRoman10; 330 | GLUTAPI void *glutBitmapTimesRoman24; 331 | GLUTAPI void *glutBitmapHelvetica10; 332 | GLUTAPI void *glutBitmapHelvetica12; 333 | GLUTAPI void *glutBitmapHelvetica18; 334 | 335 | /* Bitmap font constants (use these in GLUT program). */ 336 | #define GLUT_BITMAP_9_BY_15 (&glutBitmap9By15) 337 | #define GLUT_BITMAP_8_BY_13 (&glutBitmap8By13) 338 | #define GLUT_BITMAP_TIMES_ROMAN_10 (&glutBitmapTimesRoman10) 339 | #define GLUT_BITMAP_TIMES_ROMAN_24 (&glutBitmapTimesRoman24) 340 | #if (GLUT_API_VERSION >= 3) 341 | #define GLUT_BITMAP_HELVETICA_10 (&glutBitmapHelvetica10) 342 | #define GLUT_BITMAP_HELVETICA_12 (&glutBitmapHelvetica12) 343 | #define GLUT_BITMAP_HELVETICA_18 (&glutBitmapHelvetica18) 344 | #endif 345 | #endif 346 | 347 | /* glutGet parameters. */ 348 | #define GLUT_WINDOW_X ((GLenum) 100) 349 | #define GLUT_WINDOW_Y ((GLenum) 101) 350 | #define GLUT_WINDOW_WIDTH ((GLenum) 102) 351 | #define GLUT_WINDOW_HEIGHT ((GLenum) 103) 352 | #define GLUT_WINDOW_BUFFER_SIZE ((GLenum) 104) 353 | #define GLUT_WINDOW_STENCIL_SIZE ((GLenum) 105) 354 | #define GLUT_WINDOW_DEPTH_SIZE ((GLenum) 106) 355 | #define GLUT_WINDOW_RED_SIZE ((GLenum) 107) 356 | #define GLUT_WINDOW_GREEN_SIZE ((GLenum) 108) 357 | #define GLUT_WINDOW_BLUE_SIZE ((GLenum) 109) 358 | #define GLUT_WINDOW_ALPHA_SIZE ((GLenum) 110) 359 | #define GLUT_WINDOW_ACCUM_RED_SIZE ((GLenum) 111) 360 | #define GLUT_WINDOW_ACCUM_GREEN_SIZE ((GLenum) 112) 361 | #define GLUT_WINDOW_ACCUM_BLUE_SIZE ((GLenum) 113) 362 | #define GLUT_WINDOW_ACCUM_ALPHA_SIZE ((GLenum) 114) 363 | #define GLUT_WINDOW_DOUBLEBUFFER ((GLenum) 115) 364 | #define GLUT_WINDOW_RGBA ((GLenum) 116) 365 | #define GLUT_WINDOW_PARENT ((GLenum) 117) 366 | #define GLUT_WINDOW_NUM_CHILDREN ((GLenum) 118) 367 | #define GLUT_WINDOW_COLORMAP_SIZE ((GLenum) 119) 368 | #if (GLUT_API_VERSION >= 2) 369 | #define GLUT_WINDOW_NUM_SAMPLES ((GLenum) 120) 370 | #define GLUT_WINDOW_STEREO ((GLenum) 121) 371 | #endif 372 | #if (GLUT_API_VERSION >= 3) 373 | #define GLUT_WINDOW_CURSOR ((GLenum) 122) 374 | #endif 375 | #define GLUT_SCREEN_WIDTH ((GLenum) 200) 376 | #define GLUT_SCREEN_HEIGHT ((GLenum) 201) 377 | #define GLUT_SCREEN_WIDTH_MM ((GLenum) 202) 378 | #define GLUT_SCREEN_HEIGHT_MM ((GLenum) 203) 379 | #define GLUT_MENU_NUM_ITEMS ((GLenum) 300) 380 | #define GLUT_DISPLAY_MODE_POSSIBLE ((GLenum) 400) 381 | #define GLUT_INIT_WINDOW_X ((GLenum) 500) 382 | #define GLUT_INIT_WINDOW_Y ((GLenum) 501) 383 | #define GLUT_INIT_WINDOW_WIDTH ((GLenum) 502) 384 | #define GLUT_INIT_WINDOW_HEIGHT ((GLenum) 503) 385 | #define GLUT_INIT_DISPLAY_MODE ((GLenum) 504) 386 | #if (GLUT_API_VERSION >= 2) 387 | #define GLUT_ELAPSED_TIME ((GLenum) 700) 388 | #endif 389 | #if (GLUT_API_VERSION >= 4 || GLUT_XLIB_IMPLEMENTATION >= 13) 390 | #define GLUT_WINDOW_FORMAT_ID ((GLenum) 123) 391 | #endif 392 | 393 | #if (GLUT_API_VERSION >= 2) 394 | /* glutDeviceGet parameters. */ 395 | #define GLUT_HAS_KEYBOARD ((GLenum) 600) 396 | #define GLUT_HAS_MOUSE ((GLenum) 601) 397 | #define GLUT_HAS_SPACEBALL ((GLenum) 602) 398 | #define GLUT_HAS_DIAL_AND_BUTTON_BOX ((GLenum) 603) 399 | #define GLUT_HAS_TABLET ((GLenum) 604) 400 | #define GLUT_NUM_MOUSE_BUTTONS ((GLenum) 605) 401 | #define GLUT_NUM_SPACEBALL_BUTTONS ((GLenum) 606) 402 | #define GLUT_NUM_BUTTON_BOX_BUTTONS ((GLenum) 607) 403 | #define GLUT_NUM_DIALS ((GLenum) 608) 404 | #define GLUT_NUM_TABLET_BUTTONS ((GLenum) 609) 405 | #endif 406 | #if (GLUT_API_VERSION >= 4 || GLUT_XLIB_IMPLEMENTATION >= 13) 407 | #define GLUT_DEVICE_IGNORE_KEY_REPEAT ((GLenum) 610) 408 | #define GLUT_DEVICE_KEY_REPEAT ((GLenum) 611) 409 | #define GLUT_HAS_JOYSTICK ((GLenum) 612) 410 | #define GLUT_OWNS_JOYSTICK ((GLenum) 613) 411 | #define GLUT_JOYSTICK_BUTTONS ((GLenum) 614) 412 | #define GLUT_JOYSTICK_AXES ((GLenum) 615) 413 | #define GLUT_JOYSTICK_POLL_RATE ((GLenum) 616) 414 | #endif 415 | 416 | #if (GLUT_API_VERSION >= 3) 417 | /* glutLayerGet parameters. */ 418 | #define GLUT_OVERLAY_POSSIBLE ((GLenum) 800) 419 | #define GLUT_LAYER_IN_USE ((GLenum) 801) 420 | #define GLUT_HAS_OVERLAY ((GLenum) 802) 421 | #define GLUT_TRANSPARENT_INDEX ((GLenum) 803) 422 | #define GLUT_NORMAL_DAMAGED ((GLenum) 804) 423 | #define GLUT_OVERLAY_DAMAGED ((GLenum) 805) 424 | 425 | #if (GLUT_API_VERSION >= 4 || GLUT_XLIB_IMPLEMENTATION >= 9) 426 | /* glutVideoResizeGet parameters. */ 427 | #define GLUT_VIDEO_RESIZE_POSSIBLE ((GLenum) 900) 428 | #define GLUT_VIDEO_RESIZE_IN_USE ((GLenum) 901) 429 | #define GLUT_VIDEO_RESIZE_X_DELTA ((GLenum) 902) 430 | #define GLUT_VIDEO_RESIZE_Y_DELTA ((GLenum) 903) 431 | #define GLUT_VIDEO_RESIZE_WIDTH_DELTA ((GLenum) 904) 432 | #define GLUT_VIDEO_RESIZE_HEIGHT_DELTA ((GLenum) 905) 433 | #define GLUT_VIDEO_RESIZE_X ((GLenum) 906) 434 | #define GLUT_VIDEO_RESIZE_Y ((GLenum) 907) 435 | #define GLUT_VIDEO_RESIZE_WIDTH ((GLenum) 908) 436 | #define GLUT_VIDEO_RESIZE_HEIGHT ((GLenum) 909) 437 | #endif 438 | 439 | /* glutUseLayer parameters. */ 440 | #define GLUT_NORMAL ((GLenum) 0) 441 | #define GLUT_OVERLAY ((GLenum) 1) 442 | 443 | /* glutGetModifiers return mask. */ 444 | #define GLUT_ACTIVE_SHIFT 1 445 | #define GLUT_ACTIVE_CTRL 2 446 | #define GLUT_ACTIVE_ALT 4 447 | 448 | /* glutSetCursor parameters. */ 449 | /* Basic arrows. */ 450 | #define GLUT_CURSOR_RIGHT_ARROW 0 451 | #define GLUT_CURSOR_LEFT_ARROW 1 452 | /* Symbolic cursor shapes. */ 453 | #define GLUT_CURSOR_INFO 2 454 | #define GLUT_CURSOR_DESTROY 3 455 | #define GLUT_CURSOR_HELP 4 456 | #define GLUT_CURSOR_CYCLE 5 457 | #define GLUT_CURSOR_SPRAY 6 458 | #define GLUT_CURSOR_WAIT 7 459 | #define GLUT_CURSOR_TEXT 8 460 | #define GLUT_CURSOR_CROSSHAIR 9 461 | /* Directional cursors. */ 462 | #define GLUT_CURSOR_UP_DOWN 10 463 | #define GLUT_CURSOR_LEFT_RIGHT 11 464 | /* Sizing cursors. */ 465 | #define GLUT_CURSOR_TOP_SIDE 12 466 | #define GLUT_CURSOR_BOTTOM_SIDE 13 467 | #define GLUT_CURSOR_LEFT_SIDE 14 468 | #define GLUT_CURSOR_RIGHT_SIDE 15 469 | #define GLUT_CURSOR_TOP_LEFT_CORNER 16 470 | #define GLUT_CURSOR_TOP_RIGHT_CORNER 17 471 | #define GLUT_CURSOR_BOTTOM_RIGHT_CORNER 18 472 | #define GLUT_CURSOR_BOTTOM_LEFT_CORNER 19 473 | /* Inherit from parent window. */ 474 | #define GLUT_CURSOR_INHERIT 100 475 | /* Blank cursor. */ 476 | #define GLUT_CURSOR_NONE 101 477 | /* Fullscreen crosshair (if available). */ 478 | #define GLUT_CURSOR_FULL_CROSSHAIR 102 479 | #endif 480 | 481 | /* GLUT initialization sub-API. */ 482 | GLUTAPI void APIENTRY glutInit(int *argcp, char **argv); 483 | #if defined(_WIN32) && !defined(GLUT_DISABLE_ATEXIT_HACK) 484 | GLUTAPI void APIENTRY __glutInitWithExit(int *argcp, char **argv, void (__cdecl *exitfunc)(int)); 485 | #ifndef GLUT_BUILDING_LIB 486 | static void APIENTRY glutInit_ATEXIT_HACK(int *argcp, char **argv) { __glutInitWithExit(argcp, argv, exit); } 487 | #define glutInit glutInit_ATEXIT_HACK 488 | #endif 489 | #endif 490 | GLUTAPI void APIENTRY glutInitDisplayMode(unsigned int mode); 491 | #if (GLUT_API_VERSION >= 4 || GLUT_XLIB_IMPLEMENTATION >= 9) 492 | GLUTAPI void APIENTRY glutInitDisplayString(const char *string); 493 | #endif 494 | GLUTAPI void APIENTRY glutInitWindowPosition(int x, int y); 495 | GLUTAPI void APIENTRY glutInitWindowSize(int width, int height); 496 | GLUTAPI void APIENTRY glutMainLoop(void); 497 | 498 | /* GLUT window sub-API. */ 499 | GLUTAPI int APIENTRY glutCreateWindow(const char *title); 500 | #if defined(_WIN32) && !defined(GLUT_DISABLE_ATEXIT_HACK) 501 | GLUTAPI int APIENTRY __glutCreateWindowWithExit(const char *title, void (__cdecl *exitfunc)(int)); 502 | #ifndef GLUT_BUILDING_LIB 503 | static int APIENTRY glutCreateWindow_ATEXIT_HACK(const char *title) { return __glutCreateWindowWithExit(title, exit); } 504 | #define glutCreateWindow glutCreateWindow_ATEXIT_HACK 505 | #endif 506 | #endif 507 | GLUTAPI int APIENTRY glutCreateSubWindow(int win, int x, int y, int width, int height); 508 | GLUTAPI void APIENTRY glutDestroyWindow(int win); 509 | GLUTAPI void APIENTRY glutPostRedisplay(void); 510 | #if (GLUT_API_VERSION >= 4 || GLUT_XLIB_IMPLEMENTATION >= 11) 511 | GLUTAPI void APIENTRY glutPostWindowRedisplay(int win); 512 | #endif 513 | GLUTAPI void APIENTRY glutSwapBuffers(void); 514 | GLUTAPI int APIENTRY glutGetWindow(void); 515 | GLUTAPI void APIENTRY glutSetWindow(int win); 516 | GLUTAPI void APIENTRY glutSetWindowTitle(const char *title); 517 | GLUTAPI void APIENTRY glutSetIconTitle(const char *title); 518 | GLUTAPI void APIENTRY glutPositionWindow(int x, int y); 519 | GLUTAPI void APIENTRY glutReshapeWindow(int width, int height); 520 | GLUTAPI void APIENTRY glutPopWindow(void); 521 | GLUTAPI void APIENTRY glutPushWindow(void); 522 | GLUTAPI void APIENTRY glutIconifyWindow(void); 523 | GLUTAPI void APIENTRY glutShowWindow(void); 524 | GLUTAPI void APIENTRY glutHideWindow(void); 525 | #if (GLUT_API_VERSION >= 3) 526 | GLUTAPI void APIENTRY glutFullScreen(void); 527 | GLUTAPI void APIENTRY glutSetCursor(int cursor); 528 | #if (GLUT_API_VERSION >= 4 || GLUT_XLIB_IMPLEMENTATION >= 9) 529 | GLUTAPI void APIENTRY glutWarpPointer(int x, int y); 530 | #endif 531 | 532 | /* GLUT overlay sub-API. */ 533 | GLUTAPI void APIENTRY glutEstablishOverlay(void); 534 | GLUTAPI void APIENTRY glutRemoveOverlay(void); 535 | GLUTAPI void APIENTRY glutUseLayer(GLenum layer); 536 | GLUTAPI void APIENTRY glutPostOverlayRedisplay(void); 537 | #if (GLUT_API_VERSION >= 4 || GLUT_XLIB_IMPLEMENTATION >= 11) 538 | GLUTAPI void APIENTRY glutPostWindowOverlayRedisplay(int win); 539 | #endif 540 | GLUTAPI void APIENTRY glutShowOverlay(void); 541 | GLUTAPI void APIENTRY glutHideOverlay(void); 542 | #endif 543 | 544 | /* GLUT menu sub-API. */ 545 | GLUTAPI int APIENTRY glutCreateMenu(void (GLUTCALLBACK *func)(int)); 546 | #if defined(_WIN32) && !defined(GLUT_DISABLE_ATEXIT_HACK) 547 | GLUTAPI int APIENTRY __glutCreateMenuWithExit(void (GLUTCALLBACK *func)(int), void (__cdecl *exitfunc)(int)); 548 | #ifndef GLUT_BUILDING_LIB 549 | static int APIENTRY glutCreateMenu_ATEXIT_HACK(void (GLUTCALLBACK *func)(int)) { return __glutCreateMenuWithExit(func, exit); } 550 | #define glutCreateMenu glutCreateMenu_ATEXIT_HACK 551 | #endif 552 | #endif 553 | GLUTAPI void APIENTRY glutDestroyMenu(int menu); 554 | GLUTAPI int APIENTRY glutGetMenu(void); 555 | GLUTAPI void APIENTRY glutSetMenu(int menu); 556 | GLUTAPI void APIENTRY glutAddMenuEntry(const char *label, int value); 557 | GLUTAPI void APIENTRY glutAddSubMenu(const char *label, int submenu); 558 | GLUTAPI void APIENTRY glutChangeToMenuEntry(int item, const char *label, int value); 559 | GLUTAPI void APIENTRY glutChangeToSubMenu(int item, const char *label, int submenu); 560 | GLUTAPI void APIENTRY glutRemoveMenuItem(int item); 561 | GLUTAPI void APIENTRY glutAttachMenu(int button); 562 | GLUTAPI void APIENTRY glutDetachMenu(int button); 563 | 564 | /* GLUT window callback sub-API. */ 565 | GLUTAPI void APIENTRY glutDisplayFunc(void (GLUTCALLBACK *func)(void)); 566 | GLUTAPI void APIENTRY glutReshapeFunc(void (GLUTCALLBACK *func)(int width, int height)); 567 | GLUTAPI void APIENTRY glutKeyboardFunc(void (GLUTCALLBACK *func)(unsigned char key, int x, int y)); 568 | GLUTAPI void APIENTRY glutMouseFunc(void (GLUTCALLBACK *func)(int button, int state, int x, int y)); 569 | GLUTAPI void APIENTRY glutMotionFunc(void (GLUTCALLBACK *func)(int x, int y)); 570 | GLUTAPI void APIENTRY glutPassiveMotionFunc(void (GLUTCALLBACK *func)(int x, int y)); 571 | GLUTAPI void APIENTRY glutEntryFunc(void (GLUTCALLBACK *func)(int state)); 572 | GLUTAPI void APIENTRY glutVisibilityFunc(void (GLUTCALLBACK *func)(int state)); 573 | GLUTAPI void APIENTRY glutIdleFunc(void (GLUTCALLBACK *func)(void)); 574 | GLUTAPI void APIENTRY glutTimerFunc(unsigned int millis, void (GLUTCALLBACK *func)(int value), int value); 575 | GLUTAPI void APIENTRY glutMenuStateFunc(void (GLUTCALLBACK *func)(int state)); 576 | #if (GLUT_API_VERSION >= 2) 577 | GLUTAPI void APIENTRY glutSpecialFunc(void (GLUTCALLBACK *func)(int key, int x, int y)); 578 | GLUTAPI void APIENTRY glutSpaceballMotionFunc(void (GLUTCALLBACK *func)(int x, int y, int z)); 579 | GLUTAPI void APIENTRY glutSpaceballRotateFunc(void (GLUTCALLBACK *func)(int x, int y, int z)); 580 | GLUTAPI void APIENTRY glutSpaceballButtonFunc(void (GLUTCALLBACK *func)(int button, int state)); 581 | GLUTAPI void APIENTRY glutButtonBoxFunc(void (GLUTCALLBACK *func)(int button, int state)); 582 | GLUTAPI void APIENTRY glutDialsFunc(void (GLUTCALLBACK *func)(int dial, int value)); 583 | GLUTAPI void APIENTRY glutTabletMotionFunc(void (GLUTCALLBACK *func)(int x, int y)); 584 | GLUTAPI void APIENTRY glutTabletButtonFunc(void (GLUTCALLBACK *func)(int button, int state, int x, int y)); 585 | #if (GLUT_API_VERSION >= 3) 586 | GLUTAPI void APIENTRY glutMenuStatusFunc(void (GLUTCALLBACK *func)(int status, int x, int y)); 587 | GLUTAPI void APIENTRY glutOverlayDisplayFunc(void (GLUTCALLBACK *func)(void)); 588 | #if (GLUT_API_VERSION >= 4 || GLUT_XLIB_IMPLEMENTATION >= 9) 589 | GLUTAPI void APIENTRY glutWindowStatusFunc(void (GLUTCALLBACK *func)(int state)); 590 | #endif 591 | #if (GLUT_API_VERSION >= 4 || GLUT_XLIB_IMPLEMENTATION >= 13) 592 | GLUTAPI void APIENTRY glutKeyboardUpFunc(void (GLUTCALLBACK *func)(unsigned char key, int x, int y)); 593 | GLUTAPI void APIENTRY glutSpecialUpFunc(void (GLUTCALLBACK *func)(int key, int x, int y)); 594 | GLUTAPI void APIENTRY glutJoystickFunc(void (GLUTCALLBACK *func)(unsigned int buttonMask, int x, int y, int z), int pollInterval); 595 | #endif 596 | #endif 597 | #endif 598 | 599 | /* GLUT color index sub-API. */ 600 | GLUTAPI void APIENTRY glutSetColor(int, GLfloat red, GLfloat green, GLfloat blue); 601 | GLUTAPI GLfloat APIENTRY glutGetColor(int ndx, int component); 602 | GLUTAPI void APIENTRY glutCopyColormap(int win); 603 | 604 | /* GLUT state retrieval sub-API. */ 605 | GLUTAPI int APIENTRY glutGet(GLenum type); 606 | GLUTAPI int APIENTRY glutDeviceGet(GLenum type); 607 | #if (GLUT_API_VERSION >= 2) 608 | /* GLUT extension support sub-API */ 609 | GLUTAPI int APIENTRY glutExtensionSupported(const char *name); 610 | #endif 611 | #if (GLUT_API_VERSION >= 3) 612 | GLUTAPI int APIENTRY glutGetModifiers(void); 613 | GLUTAPI int APIENTRY glutLayerGet(GLenum type); 614 | #endif 615 | 616 | /* GLUT font sub-API */ 617 | GLUTAPI void APIENTRY glutBitmapCharacter(void *font, int character); 618 | GLUTAPI int APIENTRY glutBitmapWidth(void *font, int character); 619 | GLUTAPI void APIENTRY glutStrokeCharacter(void *font, int character); 620 | GLUTAPI int APIENTRY glutStrokeWidth(void *font, int character); 621 | #if (GLUT_API_VERSION >= 4 || GLUT_XLIB_IMPLEMENTATION >= 9) 622 | GLUTAPI int APIENTRY glutBitmapLength(void *font, const unsigned char *string); 623 | GLUTAPI int APIENTRY glutStrokeLength(void *font, const unsigned char *string); 624 | #endif 625 | 626 | /* GLUT pre-built models sub-API */ 627 | GLUTAPI void APIENTRY glutWireSphere(GLdouble radius, GLint slices, GLint stacks); 628 | GLUTAPI void APIENTRY glutSolidSphere(GLdouble radius, GLint slices, GLint stacks); 629 | GLUTAPI void APIENTRY glutWireCone(GLdouble base, GLdouble height, GLint slices, GLint stacks); 630 | GLUTAPI void APIENTRY glutSolidCone(GLdouble base, GLdouble height, GLint slices, GLint stacks); 631 | GLUTAPI void APIENTRY glutWireCube(GLdouble size); 632 | GLUTAPI void APIENTRY glutSolidCube(GLdouble size); 633 | GLUTAPI void APIENTRY glutWireTorus(GLdouble innerRadius, GLdouble outerRadius, GLint sides, GLint rings); 634 | GLUTAPI void APIENTRY glutSolidTorus(GLdouble innerRadius, GLdouble outerRadius, GLint sides, GLint rings); 635 | GLUTAPI void APIENTRY glutWireDodecahedron(void); 636 | GLUTAPI void APIENTRY glutSolidDodecahedron(void); 637 | GLUTAPI void APIENTRY glutWireTeapot(GLdouble size); 638 | GLUTAPI void APIENTRY glutSolidTeapot(GLdouble size); 639 | GLUTAPI void APIENTRY glutWireOctahedron(void); 640 | GLUTAPI void APIENTRY glutSolidOctahedron(void); 641 | GLUTAPI void APIENTRY glutWireTetrahedron(void); 642 | GLUTAPI void APIENTRY glutSolidTetrahedron(void); 643 | GLUTAPI void APIENTRY glutWireIcosahedron(void); 644 | GLUTAPI void APIENTRY glutSolidIcosahedron(void); 645 | 646 | #if (GLUT_API_VERSION >= 4 || GLUT_XLIB_IMPLEMENTATION >= 9) 647 | /* GLUT video resize sub-API. */ 648 | GLUTAPI int APIENTRY glutVideoResizeGet(GLenum param); 649 | GLUTAPI void APIENTRY glutSetupVideoResizing(void); 650 | GLUTAPI void APIENTRY glutStopVideoResizing(void); 651 | GLUTAPI void APIENTRY glutVideoResize(int x, int y, int width, int height); 652 | GLUTAPI void APIENTRY glutVideoPan(int x, int y, int width, int height); 653 | 654 | /* GLUT debugging sub-API. */ 655 | GLUTAPI void APIENTRY glutReportErrors(void); 656 | #endif 657 | 658 | #if (GLUT_API_VERSION >= 4 || GLUT_XLIB_IMPLEMENTATION >= 13) 659 | /* GLUT device control sub-API. */ 660 | /* glutSetKeyRepeat modes. */ 661 | #define GLUT_KEY_REPEAT_OFF 0 662 | #define GLUT_KEY_REPEAT_ON 1 663 | #define GLUT_KEY_REPEAT_DEFAULT 2 664 | 665 | /* Joystick button masks. */ 666 | #define GLUT_JOYSTICK_BUTTON_A 1 667 | #define GLUT_JOYSTICK_BUTTON_B 2 668 | #define GLUT_JOYSTICK_BUTTON_C 4 669 | #define GLUT_JOYSTICK_BUTTON_D 8 670 | 671 | GLUTAPI void APIENTRY glutIgnoreKeyRepeat(int ignore); 672 | GLUTAPI void APIENTRY glutSetKeyRepeat(int repeatMode); 673 | GLUTAPI void APIENTRY glutForceJoystickFunc(void); 674 | 675 | /* GLUT game mode sub-API. */ 676 | /* glutGameModeGet. */ 677 | #define GLUT_GAME_MODE_ACTIVE ((GLenum) 0) 678 | #define GLUT_GAME_MODE_POSSIBLE ((GLenum) 1) 679 | #define GLUT_GAME_MODE_WIDTH ((GLenum) 2) 680 | #define GLUT_GAME_MODE_HEIGHT ((GLenum) 3) 681 | #define GLUT_GAME_MODE_PIXEL_DEPTH ((GLenum) 4) 682 | #define GLUT_GAME_MODE_REFRESH_RATE ((GLenum) 5) 683 | #define GLUT_GAME_MODE_DISPLAY_CHANGED ((GLenum) 6) 684 | 685 | GLUTAPI void APIENTRY glutGameModeString(const char *string); 686 | GLUTAPI int APIENTRY glutEnterGameMode(void); 687 | GLUTAPI void APIENTRY glutLeaveGameMode(void); 688 | GLUTAPI int APIENTRY glutGameModeGet(GLenum mode); 689 | #endif 690 | 691 | #ifdef __cplusplus 692 | } 693 | 694 | #endif 695 | 696 | #ifdef GLUT_APIENTRY_DEFINED 697 | # undef GLUT_APIENTRY_DEFINED 698 | # undef APIENTRY 699 | #endif 700 | 701 | #ifdef GLUT_WINGDIAPI_DEFINED 702 | # undef GLUT_WINGDIAPI_DEFINED 703 | # undef WINGDIAPI 704 | #endif 705 | 706 | #ifdef GLUT_DEFINED___CDECL 707 | # undef GLUT_DEFINED___CDECL 708 | # undef __cdecl 709 | #endif 710 | 711 | #ifdef GLUT_DEFINED__CRTIMP 712 | # undef GLUT_DEFINED__CRTIMP 713 | # undef _CRTIMP 714 | #endif 715 | 716 | #endif /* __glut_h__ */ 717 | -------------------------------------------------------------------------------- /glut32.dll: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/glut32.dll -------------------------------------------------------------------------------- /glut32.lib: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/glut32.lib -------------------------------------------------------------------------------- /lodepng.h: -------------------------------------------------------------------------------- 1 | /* 2 | LodePNG version 20160124 3 | 4 | Copyright (c) 2005-2016 Lode Vandevenne 5 | 6 | This software is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this software. 9 | 10 | Permission is granted to anyone to use this software for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this software must not be misrepresented; you must not 15 | claim that you wrote the original software. If you use this software 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 19 | 2. Altered source versions must be plainly marked as such, and must not be 20 | misrepresented as being the original software. 21 | 22 | 3. This notice may not be removed or altered from any source 23 | distribution. 24 | */ 25 | 26 | #ifndef LODEPNG_H 27 | #define LODEPNG_H 28 | 29 | #include /*for size_t*/ 30 | 31 | extern const char* LODEPNG_VERSION_STRING; 32 | 33 | /* 34 | The following #defines are used to create code sections. They can be disabled 35 | to disable code sections, which can give faster compile time and smaller binary. 36 | The "NO_COMPILE" defines are designed to be used to pass as defines to the 37 | compiler command to disable them without modifying this header, e.g. 38 | -DLODEPNG_NO_COMPILE_ZLIB for gcc. 39 | In addition to those below, you can also define LODEPNG_NO_COMPILE_CRC to 40 | allow implementing a custom lodepng_crc32. 41 | */ 42 | /*deflate & zlib. If disabled, you must specify alternative zlib functions in 43 | the custom_zlib field of the compress and decompress settings*/ 44 | #ifndef LODEPNG_NO_COMPILE_ZLIB 45 | #define LODEPNG_COMPILE_ZLIB 46 | #endif 47 | /*png encoder and png decoder*/ 48 | #ifndef LODEPNG_NO_COMPILE_PNG 49 | #define LODEPNG_COMPILE_PNG 50 | #endif 51 | /*deflate&zlib decoder and png decoder*/ 52 | #ifndef LODEPNG_NO_COMPILE_DECODER 53 | #define LODEPNG_COMPILE_DECODER 54 | #endif 55 | /*deflate&zlib encoder and png encoder*/ 56 | #ifndef LODEPNG_NO_COMPILE_ENCODER 57 | #define LODEPNG_COMPILE_ENCODER 58 | #endif 59 | /*the optional built in harddisk file loading and saving functions*/ 60 | #ifndef LODEPNG_NO_COMPILE_DISK 61 | #define LODEPNG_COMPILE_DISK 62 | #endif 63 | /*support for chunks other than IHDR, IDAT, PLTE, tRNS, IEND: ancillary and unknown chunks*/ 64 | #ifndef LODEPNG_NO_COMPILE_ANCILLARY_CHUNKS 65 | #define LODEPNG_COMPILE_ANCILLARY_CHUNKS 66 | #endif 67 | /*ability to convert error numerical codes to English text string*/ 68 | #ifndef LODEPNG_NO_COMPILE_ERROR_TEXT 69 | #define LODEPNG_COMPILE_ERROR_TEXT 70 | #endif 71 | /*Compile the default allocators (C's free, malloc and realloc). If you disable this, 72 | you can define the functions lodepng_free, lodepng_malloc and lodepng_realloc in your 73 | source files with custom allocators.*/ 74 | #ifndef LODEPNG_NO_COMPILE_ALLOCATORS 75 | #define LODEPNG_COMPILE_ALLOCATORS 76 | #endif 77 | /*compile the C++ version (you can disable the C++ wrapper here even when compiling for C++)*/ 78 | #ifdef __cplusplus 79 | #ifndef LODEPNG_NO_COMPILE_CPP 80 | #define LODEPNG_COMPILE_CPP 81 | #endif 82 | #endif 83 | 84 | #ifdef LODEPNG_COMPILE_CPP 85 | #include 86 | #include 87 | #endif /*LODEPNG_COMPILE_CPP*/ 88 | 89 | #ifdef LODEPNG_COMPILE_PNG 90 | /*The PNG color types (also used for raw).*/ 91 | typedef enum LodePNGColorType 92 | { 93 | LCT_GREY = 0, /*greyscale: 1,2,4,8,16 bit*/ 94 | LCT_RGB = 2, /*RGB: 8,16 bit*/ 95 | LCT_PALETTE = 3, /*palette: 1,2,4,8 bit*/ 96 | LCT_GREY_ALPHA = 4, /*greyscale with alpha: 8,16 bit*/ 97 | LCT_RGBA = 6 /*RGB with alpha: 8,16 bit*/ 98 | } LodePNGColorType; 99 | 100 | #ifdef LODEPNG_COMPILE_DECODER 101 | /* 102 | Converts PNG data in memory to raw pixel data. 103 | out: Output parameter. Pointer to buffer that will contain the raw pixel data. 104 | After decoding, its size is w * h * (bytes per pixel) bytes larger than 105 | initially. Bytes per pixel depends on colortype and bitdepth. 106 | Must be freed after usage with free(*out). 107 | Note: for 16-bit per channel colors, uses big endian format like PNG does. 108 | w: Output parameter. Pointer to width of pixel data. 109 | h: Output parameter. Pointer to height of pixel data. 110 | in: Memory buffer with the PNG file. 111 | insize: size of the in buffer. 112 | colortype: the desired color type for the raw output image. See explanation on PNG color types. 113 | bitdepth: the desired bit depth for the raw output image. See explanation on PNG color types. 114 | Return value: LodePNG error code (0 means no error). 115 | */ 116 | unsigned lodepng_decode_memory(unsigned char** out, unsigned* w, unsigned* h, 117 | const unsigned char* in, size_t insize, 118 | LodePNGColorType colortype, unsigned bitdepth); 119 | 120 | /*Same as lodepng_decode_memory, but always decodes to 32-bit RGBA raw image*/ 121 | unsigned lodepng_decode32(unsigned char** out, unsigned* w, unsigned* h, 122 | const unsigned char* in, size_t insize); 123 | 124 | /*Same as lodepng_decode_memory, but always decodes to 24-bit RGB raw image*/ 125 | unsigned lodepng_decode24(unsigned char** out, unsigned* w, unsigned* h, 126 | const unsigned char* in, size_t insize); 127 | 128 | #ifdef LODEPNG_COMPILE_DISK 129 | /* 130 | Load PNG from disk, from file with given name. 131 | Same as the other decode functions, but instead takes a filename as input. 132 | */ 133 | unsigned lodepng_decode_file(unsigned char** out, unsigned* w, unsigned* h, 134 | const char* filename, 135 | LodePNGColorType colortype, unsigned bitdepth); 136 | 137 | /*Same as lodepng_decode_file, but always decodes to 32-bit RGBA raw image.*/ 138 | unsigned lodepng_decode32_file(unsigned char** out, unsigned* w, unsigned* h, 139 | const char* filename); 140 | 141 | /*Same as lodepng_decode_file, but always decodes to 24-bit RGB raw image.*/ 142 | unsigned lodepng_decode24_file(unsigned char** out, unsigned* w, unsigned* h, 143 | const char* filename); 144 | #endif /*LODEPNG_COMPILE_DISK*/ 145 | #endif /*LODEPNG_COMPILE_DECODER*/ 146 | 147 | 148 | #ifdef LODEPNG_COMPILE_ENCODER 149 | /* 150 | Converts raw pixel data into a PNG image in memory. The colortype and bitdepth 151 | of the output PNG image cannot be chosen, they are automatically determined 152 | by the colortype, bitdepth and content of the input pixel data. 153 | Note: for 16-bit per channel colors, needs big endian format like PNG does. 154 | out: Output parameter. Pointer to buffer that will contain the PNG image data. 155 | Must be freed after usage with free(*out). 156 | outsize: Output parameter. Pointer to the size in bytes of the out buffer. 157 | image: The raw pixel data to encode. The size of this buffer should be 158 | w * h * (bytes per pixel), bytes per pixel depends on colortype and bitdepth. 159 | w: width of the raw pixel data in pixels. 160 | h: height of the raw pixel data in pixels. 161 | colortype: the color type of the raw input image. See explanation on PNG color types. 162 | bitdepth: the bit depth of the raw input image. See explanation on PNG color types. 163 | Return value: LodePNG error code (0 means no error). 164 | */ 165 | unsigned lodepng_encode_memory(unsigned char** out, size_t* outsize, 166 | const unsigned char* image, unsigned w, unsigned h, 167 | LodePNGColorType colortype, unsigned bitdepth); 168 | 169 | /*Same as lodepng_encode_memory, but always encodes from 32-bit RGBA raw image.*/ 170 | unsigned lodepng_encode32(unsigned char** out, size_t* outsize, 171 | const unsigned char* image, unsigned w, unsigned h); 172 | 173 | /*Same as lodepng_encode_memory, but always encodes from 24-bit RGB raw image.*/ 174 | unsigned lodepng_encode24(unsigned char** out, size_t* outsize, 175 | const unsigned char* image, unsigned w, unsigned h); 176 | 177 | #ifdef LODEPNG_COMPILE_DISK 178 | /* 179 | Converts raw pixel data into a PNG file on disk. 180 | Same as the other encode functions, but instead takes a filename as output. 181 | NOTE: This overwrites existing files without warning! 182 | */ 183 | unsigned lodepng_encode_file(const char* filename, 184 | const unsigned char* image, unsigned w, unsigned h, 185 | LodePNGColorType colortype, unsigned bitdepth); 186 | 187 | /*Same as lodepng_encode_file, but always encodes from 32-bit RGBA raw image.*/ 188 | unsigned lodepng_encode32_file(const char* filename, 189 | const unsigned char* image, unsigned w, unsigned h); 190 | 191 | /*Same as lodepng_encode_file, but always encodes from 24-bit RGB raw image.*/ 192 | unsigned lodepng_encode24_file(const char* filename, 193 | const unsigned char* image, unsigned w, unsigned h); 194 | #endif /*LODEPNG_COMPILE_DISK*/ 195 | #endif /*LODEPNG_COMPILE_ENCODER*/ 196 | 197 | 198 | #ifdef LODEPNG_COMPILE_CPP 199 | namespace lodepng 200 | { 201 | #ifdef LODEPNG_COMPILE_DECODER 202 | /*Same as lodepng_decode_memory, but decodes to an std::vector. The colortype 203 | is the format to output the pixels to. Default is RGBA 8-bit per channel.*/ 204 | unsigned decode(std::vector& out, unsigned& w, unsigned& h, 205 | const unsigned char* in, size_t insize, 206 | LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8); 207 | unsigned decode(std::vector& out, unsigned& w, unsigned& h, 208 | const std::vector& in, 209 | LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8); 210 | #ifdef LODEPNG_COMPILE_DISK 211 | /* 212 | Converts PNG file from disk to raw pixel data in memory. 213 | Same as the other decode functions, but instead takes a filename as input. 214 | */ 215 | unsigned decode(std::vector& out, unsigned& w, unsigned& h, 216 | const std::string& filename, 217 | LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8); 218 | #endif /* LODEPNG_COMPILE_DISK */ 219 | #endif /* LODEPNG_COMPILE_DECODER */ 220 | 221 | #ifdef LODEPNG_COMPILE_ENCODER 222 | /*Same as lodepng_encode_memory, but encodes to an std::vector. colortype 223 | is that of the raw input data. The output PNG color type will be auto chosen.*/ 224 | unsigned encode(std::vector& out, 225 | const unsigned char* in, unsigned w, unsigned h, 226 | LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8); 227 | unsigned encode(std::vector& out, 228 | const std::vector& in, unsigned w, unsigned h, 229 | LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8); 230 | #ifdef LODEPNG_COMPILE_DISK 231 | /* 232 | Converts 32-bit RGBA raw pixel data into a PNG file on disk. 233 | Same as the other encode functions, but instead takes a filename as output. 234 | NOTE: This overwrites existing files without warning! 235 | */ 236 | unsigned encode(const std::string& filename, 237 | const unsigned char* in, unsigned w, unsigned h, 238 | LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8); 239 | unsigned encode(const std::string& filename, 240 | const std::vector& in, unsigned w, unsigned h, 241 | LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8); 242 | #endif /* LODEPNG_COMPILE_DISK */ 243 | #endif /* LODEPNG_COMPILE_ENCODER */ 244 | } /* namespace lodepng */ 245 | #endif /*LODEPNG_COMPILE_CPP*/ 246 | #endif /*LODEPNG_COMPILE_PNG*/ 247 | 248 | #ifdef LODEPNG_COMPILE_ERROR_TEXT 249 | /*Returns an English description of the numerical error code.*/ 250 | const char* lodepng_error_text(unsigned code); 251 | #endif /*LODEPNG_COMPILE_ERROR_TEXT*/ 252 | 253 | #ifdef LODEPNG_COMPILE_DECODER 254 | /*Settings for zlib decompression*/ 255 | typedef struct LodePNGDecompressSettings LodePNGDecompressSettings; 256 | struct LodePNGDecompressSettings 257 | { 258 | unsigned ignore_adler32; /*if 1, continue and don't give an error message if the Adler32 checksum is corrupted*/ 259 | 260 | /*use custom zlib decoder instead of built in one (default: null)*/ 261 | unsigned (*custom_zlib)(unsigned char**, size_t*, 262 | const unsigned char*, size_t, 263 | const LodePNGDecompressSettings*); 264 | /*use custom deflate decoder instead of built in one (default: null) 265 | if custom_zlib is used, custom_deflate is ignored since only the built in 266 | zlib function will call custom_deflate*/ 267 | unsigned (*custom_inflate)(unsigned char**, size_t*, 268 | const unsigned char*, size_t, 269 | const LodePNGDecompressSettings*); 270 | 271 | const void* custom_context; /*optional custom settings for custom functions*/ 272 | }; 273 | 274 | extern const LodePNGDecompressSettings lodepng_default_decompress_settings; 275 | void lodepng_decompress_settings_init(LodePNGDecompressSettings* settings); 276 | #endif /*LODEPNG_COMPILE_DECODER*/ 277 | 278 | #ifdef LODEPNG_COMPILE_ENCODER 279 | /* 280 | Settings for zlib compression. Tweaking these settings tweaks the balance 281 | between speed and compression ratio. 282 | */ 283 | typedef struct LodePNGCompressSettings LodePNGCompressSettings; 284 | struct LodePNGCompressSettings /*deflate = compress*/ 285 | { 286 | /*LZ77 related settings*/ 287 | unsigned btype; /*the block type for LZ (0, 1, 2 or 3, see zlib standard). Should be 2 for proper compression.*/ 288 | unsigned use_lz77; /*whether or not to use LZ77. Should be 1 for proper compression.*/ 289 | unsigned windowsize; /*must be a power of two <= 32768. higher compresses more but is slower. Default value: 2048.*/ 290 | unsigned minmatch; /*mininum lz77 length. 3 is normally best, 6 can be better for some PNGs. Default: 0*/ 291 | unsigned nicematch; /*stop searching if >= this length found. Set to 258 for best compression. Default: 128*/ 292 | unsigned lazymatching; /*use lazy matching: better compression but a bit slower. Default: true*/ 293 | 294 | /*use custom zlib encoder instead of built in one (default: null)*/ 295 | unsigned (*custom_zlib)(unsigned char**, size_t*, 296 | const unsigned char*, size_t, 297 | const LodePNGCompressSettings*); 298 | /*use custom deflate encoder instead of built in one (default: null) 299 | if custom_zlib is used, custom_deflate is ignored since only the built in 300 | zlib function will call custom_deflate*/ 301 | unsigned (*custom_deflate)(unsigned char**, size_t*, 302 | const unsigned char*, size_t, 303 | const LodePNGCompressSettings*); 304 | 305 | const void* custom_context; /*optional custom settings for custom functions*/ 306 | }; 307 | 308 | extern const LodePNGCompressSettings lodepng_default_compress_settings; 309 | void lodepng_compress_settings_init(LodePNGCompressSettings* settings); 310 | #endif /*LODEPNG_COMPILE_ENCODER*/ 311 | 312 | #ifdef LODEPNG_COMPILE_PNG 313 | /* 314 | Color mode of an image. Contains all information required to decode the pixel 315 | bits to RGBA colors. This information is the same as used in the PNG file 316 | format, and is used both for PNG and raw image data in LodePNG. 317 | */ 318 | typedef struct LodePNGColorMode 319 | { 320 | /*header (IHDR)*/ 321 | LodePNGColorType colortype; /*color type, see PNG standard or documentation further in this header file*/ 322 | unsigned bitdepth; /*bits per sample, see PNG standard or documentation further in this header file*/ 323 | 324 | /* 325 | palette (PLTE and tRNS) 326 | 327 | Dynamically allocated with the colors of the palette, including alpha. 328 | When encoding a PNG, to store your colors in the palette of the LodePNGColorMode, first use 329 | lodepng_palette_clear, then for each color use lodepng_palette_add. 330 | If you encode an image without alpha with palette, don't forget to put value 255 in each A byte of the palette. 331 | 332 | When decoding, by default you can ignore this palette, since LodePNG already 333 | fills the palette colors in the pixels of the raw RGBA output. 334 | 335 | The palette is only supported for color type 3. 336 | */ 337 | unsigned char* palette; /*palette in RGBARGBA... order. When allocated, must be either 0, or have size 1024*/ 338 | size_t palettesize; /*palette size in number of colors (amount of bytes is 4 * palettesize)*/ 339 | 340 | /* 341 | transparent color key (tRNS) 342 | 343 | This color uses the same bit depth as the bitdepth value in this struct, which can be 1-bit to 16-bit. 344 | For greyscale PNGs, r, g and b will all 3 be set to the same. 345 | 346 | When decoding, by default you can ignore this information, since LodePNG sets 347 | pixels with this key to transparent already in the raw RGBA output. 348 | 349 | The color key is only supported for color types 0 and 2. 350 | */ 351 | unsigned key_defined; /*is a transparent color key given? 0 = false, 1 = true*/ 352 | unsigned key_r; /*red/greyscale component of color key*/ 353 | unsigned key_g; /*green component of color key*/ 354 | unsigned key_b; /*blue component of color key*/ 355 | } LodePNGColorMode; 356 | 357 | /*init, cleanup and copy functions to use with this struct*/ 358 | void lodepng_color_mode_init(LodePNGColorMode* info); 359 | void lodepng_color_mode_cleanup(LodePNGColorMode* info); 360 | /*return value is error code (0 means no error)*/ 361 | unsigned lodepng_color_mode_copy(LodePNGColorMode* dest, const LodePNGColorMode* source); 362 | 363 | void lodepng_palette_clear(LodePNGColorMode* info); 364 | /*add 1 color to the palette*/ 365 | unsigned lodepng_palette_add(LodePNGColorMode* info, 366 | unsigned char r, unsigned char g, unsigned char b, unsigned char a); 367 | 368 | /*get the total amount of bits per pixel, based on colortype and bitdepth in the struct*/ 369 | unsigned lodepng_get_bpp(const LodePNGColorMode* info); 370 | /*get the amount of color channels used, based on colortype in the struct. 371 | If a palette is used, it counts as 1 channel.*/ 372 | unsigned lodepng_get_channels(const LodePNGColorMode* info); 373 | /*is it a greyscale type? (only colortype 0 or 4)*/ 374 | unsigned lodepng_is_greyscale_type(const LodePNGColorMode* info); 375 | /*has it got an alpha channel? (only colortype 2 or 6)*/ 376 | unsigned lodepng_is_alpha_type(const LodePNGColorMode* info); 377 | /*has it got a palette? (only colortype 3)*/ 378 | unsigned lodepng_is_palette_type(const LodePNGColorMode* info); 379 | /*only returns true if there is a palette and there is a value in the palette with alpha < 255. 380 | Loops through the palette to check this.*/ 381 | unsigned lodepng_has_palette_alpha(const LodePNGColorMode* info); 382 | /* 383 | Check if the given color info indicates the possibility of having non-opaque pixels in the PNG image. 384 | Returns true if the image can have translucent or invisible pixels (it still be opaque if it doesn't use such pixels). 385 | Returns false if the image can only have opaque pixels. 386 | In detail, it returns true only if it's a color type with alpha, or has a palette with non-opaque values, 387 | or if "key_defined" is true. 388 | */ 389 | unsigned lodepng_can_have_alpha(const LodePNGColorMode* info); 390 | /*Returns the byte size of a raw image buffer with given width, height and color mode*/ 391 | size_t lodepng_get_raw_size(unsigned w, unsigned h, const LodePNGColorMode* color); 392 | 393 | #ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS 394 | /*The information of a Time chunk in PNG.*/ 395 | typedef struct LodePNGTime 396 | { 397 | unsigned year; /*2 bytes used (0-65535)*/ 398 | unsigned month; /*1-12*/ 399 | unsigned day; /*1-31*/ 400 | unsigned hour; /*0-23*/ 401 | unsigned minute; /*0-59*/ 402 | unsigned second; /*0-60 (to allow for leap seconds)*/ 403 | } LodePNGTime; 404 | #endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ 405 | 406 | /*Information about the PNG image, except pixels, width and height.*/ 407 | typedef struct LodePNGInfo 408 | { 409 | /*header (IHDR), palette (PLTE) and transparency (tRNS) chunks*/ 410 | unsigned compression_method;/*compression method of the original file. Always 0.*/ 411 | unsigned filter_method; /*filter method of the original file*/ 412 | unsigned interlace_method; /*interlace method of the original file*/ 413 | LodePNGColorMode color; /*color type and bits, palette and transparency of the PNG file*/ 414 | 415 | #ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS 416 | /* 417 | suggested background color chunk (bKGD) 418 | This color uses the same color mode as the PNG (except alpha channel), which can be 1-bit to 16-bit. 419 | 420 | For greyscale PNGs, r, g and b will all 3 be set to the same. When encoding 421 | the encoder writes the red one. For palette PNGs: When decoding, the RGB value 422 | will be stored, not a palette index. But when encoding, specify the index of 423 | the palette in background_r, the other two are then ignored. 424 | 425 | The decoder does not use this background color to edit the color of pixels. 426 | */ 427 | unsigned background_defined; /*is a suggested background color given?*/ 428 | unsigned background_r; /*red component of suggested background color*/ 429 | unsigned background_g; /*green component of suggested background color*/ 430 | unsigned background_b; /*blue component of suggested background color*/ 431 | 432 | /* 433 | non-international text chunks (tEXt and zTXt) 434 | 435 | The char** arrays each contain num strings. The actual messages are in 436 | text_strings, while text_keys are keywords that give a short description what 437 | the actual text represents, e.g. Title, Author, Description, or anything else. 438 | 439 | A keyword is minimum 1 character and maximum 79 characters long. It's 440 | discouraged to use a single line length longer than 79 characters for texts. 441 | 442 | Don't allocate these text buffers yourself. Use the init/cleanup functions 443 | correctly and use lodepng_add_text and lodepng_clear_text. 444 | */ 445 | size_t text_num; /*the amount of texts in these char** buffers (there may be more texts in itext)*/ 446 | char** text_keys; /*the keyword of a text chunk (e.g. "Comment")*/ 447 | char** text_strings; /*the actual text*/ 448 | 449 | /* 450 | international text chunks (iTXt) 451 | Similar to the non-international text chunks, but with additional strings 452 | "langtags" and "transkeys". 453 | */ 454 | size_t itext_num; /*the amount of international texts in this PNG*/ 455 | char** itext_keys; /*the English keyword of the text chunk (e.g. "Comment")*/ 456 | char** itext_langtags; /*language tag for this text's language, ISO/IEC 646 string, e.g. ISO 639 language tag*/ 457 | char** itext_transkeys; /*keyword translated to the international language - UTF-8 string*/ 458 | char** itext_strings; /*the actual international text - UTF-8 string*/ 459 | 460 | /*time chunk (tIME)*/ 461 | unsigned time_defined; /*set to 1 to make the encoder generate a tIME chunk*/ 462 | LodePNGTime time; 463 | 464 | /*phys chunk (pHYs)*/ 465 | unsigned phys_defined; /*if 0, there is no pHYs chunk and the values below are undefined, if 1 else there is one*/ 466 | unsigned phys_x; /*pixels per unit in x direction*/ 467 | unsigned phys_y; /*pixels per unit in y direction*/ 468 | unsigned phys_unit; /*may be 0 (unknown unit) or 1 (metre)*/ 469 | 470 | /* 471 | unknown chunks 472 | There are 3 buffers, one for each position in the PNG where unknown chunks can appear 473 | each buffer contains all unknown chunks for that position consecutively 474 | The 3 buffers are the unknown chunks between certain critical chunks: 475 | 0: IHDR-PLTE, 1: PLTE-IDAT, 2: IDAT-IEND 476 | Do not allocate or traverse this data yourself. Use the chunk traversing functions declared 477 | later, such as lodepng_chunk_next and lodepng_chunk_append, to read/write this struct. 478 | */ 479 | unsigned char* unknown_chunks_data[3]; 480 | size_t unknown_chunks_size[3]; /*size in bytes of the unknown chunks, given for protection*/ 481 | #endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ 482 | } LodePNGInfo; 483 | 484 | /*init, cleanup and copy functions to use with this struct*/ 485 | void lodepng_info_init(LodePNGInfo* info); 486 | void lodepng_info_cleanup(LodePNGInfo* info); 487 | /*return value is error code (0 means no error)*/ 488 | unsigned lodepng_info_copy(LodePNGInfo* dest, const LodePNGInfo* source); 489 | 490 | #ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS 491 | void lodepng_clear_text(LodePNGInfo* info); /*use this to clear the texts again after you filled them in*/ 492 | unsigned lodepng_add_text(LodePNGInfo* info, const char* key, const char* str); /*push back both texts at once*/ 493 | 494 | void lodepng_clear_itext(LodePNGInfo* info); /*use this to clear the itexts again after you filled them in*/ 495 | unsigned lodepng_add_itext(LodePNGInfo* info, const char* key, const char* langtag, 496 | const char* transkey, const char* str); /*push back the 4 texts of 1 chunk at once*/ 497 | #endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ 498 | 499 | /* 500 | Converts raw buffer from one color type to another color type, based on 501 | LodePNGColorMode structs to describe the input and output color type. 502 | See the reference manual at the end of this header file to see which color conversions are supported. 503 | return value = LodePNG error code (0 if all went ok, an error if the conversion isn't supported) 504 | The out buffer must have size (w * h * bpp + 7) / 8, where bpp is the bits per pixel 505 | of the output color type (lodepng_get_bpp). 506 | For < 8 bpp images, there should not be padding bits at the end of scanlines. 507 | For 16-bit per channel colors, uses big endian format like PNG does. 508 | Return value is LodePNG error code 509 | */ 510 | unsigned lodepng_convert(unsigned char* out, const unsigned char* in, 511 | const LodePNGColorMode* mode_out, const LodePNGColorMode* mode_in, 512 | unsigned w, unsigned h); 513 | 514 | #ifdef LODEPNG_COMPILE_DECODER 515 | /* 516 | Settings for the decoder. This contains settings for the PNG and the Zlib 517 | decoder, but not the Info settings from the Info structs. 518 | */ 519 | typedef struct LodePNGDecoderSettings 520 | { 521 | LodePNGDecompressSettings zlibsettings; /*in here is the setting to ignore Adler32 checksums*/ 522 | 523 | unsigned ignore_crc; /*ignore CRC checksums*/ 524 | 525 | unsigned color_convert; /*whether to convert the PNG to the color type you want. Default: yes*/ 526 | 527 | #ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS 528 | unsigned read_text_chunks; /*if false but remember_unknown_chunks is true, they're stored in the unknown chunks*/ 529 | /*store all bytes from unknown chunks in the LodePNGInfo (off by default, useful for a png editor)*/ 530 | unsigned remember_unknown_chunks; 531 | #endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ 532 | } LodePNGDecoderSettings; 533 | 534 | void lodepng_decoder_settings_init(LodePNGDecoderSettings* settings); 535 | #endif /*LODEPNG_COMPILE_DECODER*/ 536 | 537 | #ifdef LODEPNG_COMPILE_ENCODER 538 | /*automatically use color type with less bits per pixel if losslessly possible. Default: AUTO*/ 539 | typedef enum LodePNGFilterStrategy 540 | { 541 | /*every filter at zero*/ 542 | LFS_ZERO, 543 | /*Use filter that gives minimum sum, as described in the official PNG filter heuristic.*/ 544 | LFS_MINSUM, 545 | /*Use the filter type that gives smallest Shannon entropy for this scanline. Depending 546 | on the image, this is better or worse than minsum.*/ 547 | LFS_ENTROPY, 548 | /* 549 | Brute-force-search PNG filters by compressing each filter for each scanline. 550 | Experimental, very slow, and only rarely gives better compression than MINSUM. 551 | */ 552 | LFS_BRUTE_FORCE, 553 | /*use predefined_filters buffer: you specify the filter type for each scanline*/ 554 | LFS_PREDEFINED 555 | } LodePNGFilterStrategy; 556 | 557 | /*Gives characteristics about the colors of the image, which helps decide which color model to use for encoding. 558 | Used internally by default if "auto_convert" is enabled. Public because it's useful for custom algorithms.*/ 559 | typedef struct LodePNGColorProfile 560 | { 561 | unsigned colored; /*not greyscale*/ 562 | unsigned key; /*if true, image is not opaque. Only if true and alpha is false, color key is possible.*/ 563 | unsigned short key_r; /*these values are always in 16-bit bitdepth in the profile*/ 564 | unsigned short key_g; 565 | unsigned short key_b; 566 | unsigned alpha; /*alpha channel or alpha palette required*/ 567 | unsigned numcolors; /*amount of colors, up to 257. Not valid if bits == 16.*/ 568 | unsigned char palette[1024]; /*Remembers up to the first 256 RGBA colors, in no particular order*/ 569 | unsigned bits; /*bits per channel (not for palette). 1,2 or 4 for greyscale only. 16 if 16-bit per channel required.*/ 570 | } LodePNGColorProfile; 571 | 572 | void lodepng_color_profile_init(LodePNGColorProfile* profile); 573 | 574 | /*Get a LodePNGColorProfile of the image.*/ 575 | unsigned lodepng_get_color_profile(LodePNGColorProfile* profile, 576 | const unsigned char* image, unsigned w, unsigned h, 577 | const LodePNGColorMode* mode_in); 578 | /*The function LodePNG uses internally to decide the PNG color with auto_convert. 579 | Chooses an optimal color model, e.g. grey if only grey pixels, palette if < 256 colors, ...*/ 580 | unsigned lodepng_auto_choose_color(LodePNGColorMode* mode_out, 581 | const unsigned char* image, unsigned w, unsigned h, 582 | const LodePNGColorMode* mode_in); 583 | 584 | /*Settings for the encoder.*/ 585 | typedef struct LodePNGEncoderSettings 586 | { 587 | LodePNGCompressSettings zlibsettings; /*settings for the zlib encoder, such as window size, ...*/ 588 | 589 | unsigned auto_convert; /*automatically choose output PNG color type. Default: true*/ 590 | 591 | /*If true, follows the official PNG heuristic: if the PNG uses a palette or lower than 592 | 8 bit depth, set all filters to zero. Otherwise use the filter_strategy. Note that to 593 | completely follow the official PNG heuristic, filter_palette_zero must be true and 594 | filter_strategy must be LFS_MINSUM*/ 595 | unsigned filter_palette_zero; 596 | /*Which filter strategy to use when not using zeroes due to filter_palette_zero. 597 | Set filter_palette_zero to 0 to ensure always using your chosen strategy. Default: LFS_MINSUM*/ 598 | LodePNGFilterStrategy filter_strategy; 599 | /*used if filter_strategy is LFS_PREDEFINED. In that case, this must point to a buffer with 600 | the same length as the amount of scanlines in the image, and each value must <= 5. You 601 | have to cleanup this buffer, LodePNG will never free it. Don't forget that filter_palette_zero 602 | must be set to 0 to ensure this is also used on palette or low bitdepth images.*/ 603 | const unsigned char* predefined_filters; 604 | 605 | /*force creating a PLTE chunk if colortype is 2 or 6 (= a suggested palette). 606 | If colortype is 3, PLTE is _always_ created.*/ 607 | unsigned force_palette; 608 | #ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS 609 | /*add LodePNG identifier and version as a text chunk, for debugging*/ 610 | unsigned add_id; 611 | /*encode text chunks as zTXt chunks instead of tEXt chunks, and use compression in iTXt chunks*/ 612 | unsigned text_compression; 613 | #endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ 614 | } LodePNGEncoderSettings; 615 | 616 | void lodepng_encoder_settings_init(LodePNGEncoderSettings* settings); 617 | #endif /*LODEPNG_COMPILE_ENCODER*/ 618 | 619 | 620 | #if defined(LODEPNG_COMPILE_DECODER) || defined(LODEPNG_COMPILE_ENCODER) 621 | /*The settings, state and information for extended encoding and decoding.*/ 622 | typedef struct LodePNGState 623 | { 624 | #ifdef LODEPNG_COMPILE_DECODER 625 | LodePNGDecoderSettings decoder; /*the decoding settings*/ 626 | #endif /*LODEPNG_COMPILE_DECODER*/ 627 | #ifdef LODEPNG_COMPILE_ENCODER 628 | LodePNGEncoderSettings encoder; /*the encoding settings*/ 629 | #endif /*LODEPNG_COMPILE_ENCODER*/ 630 | LodePNGColorMode info_raw; /*specifies the format in which you would like to get the raw pixel buffer*/ 631 | LodePNGInfo info_png; /*info of the PNG image obtained after decoding*/ 632 | unsigned error; 633 | #ifdef LODEPNG_COMPILE_CPP 634 | /* For the lodepng::State subclass. */ 635 | virtual ~LodePNGState(){} 636 | #endif 637 | } LodePNGState; 638 | 639 | /*init, cleanup and copy functions to use with this struct*/ 640 | void lodepng_state_init(LodePNGState* state); 641 | void lodepng_state_cleanup(LodePNGState* state); 642 | void lodepng_state_copy(LodePNGState* dest, const LodePNGState* source); 643 | #endif /* defined(LODEPNG_COMPILE_DECODER) || defined(LODEPNG_COMPILE_ENCODER) */ 644 | 645 | #ifdef LODEPNG_COMPILE_DECODER 646 | /* 647 | Same as lodepng_decode_memory, but uses a LodePNGState to allow custom settings and 648 | getting much more information about the PNG image and color mode. 649 | */ 650 | unsigned lodepng_decode(unsigned char** out, unsigned* w, unsigned* h, 651 | LodePNGState* state, 652 | const unsigned char* in, size_t insize); 653 | 654 | /* 655 | Read the PNG header, but not the actual data. This returns only the information 656 | that is in the header chunk of the PNG, such as width, height and color type. The 657 | information is placed in the info_png field of the LodePNGState. 658 | */ 659 | unsigned lodepng_inspect(unsigned* w, unsigned* h, 660 | LodePNGState* state, 661 | const unsigned char* in, size_t insize); 662 | #endif /*LODEPNG_COMPILE_DECODER*/ 663 | 664 | 665 | #ifdef LODEPNG_COMPILE_ENCODER 666 | /*This function allocates the out buffer with standard malloc and stores the size in *outsize.*/ 667 | unsigned lodepng_encode(unsigned char** out, size_t* outsize, 668 | const unsigned char* image, unsigned w, unsigned h, 669 | LodePNGState* state); 670 | #endif /*LODEPNG_COMPILE_ENCODER*/ 671 | 672 | /* 673 | The lodepng_chunk functions are normally not needed, except to traverse the 674 | unknown chunks stored in the LodePNGInfo struct, or add new ones to it. 675 | It also allows traversing the chunks of an encoded PNG file yourself. 676 | 677 | PNG standard chunk naming conventions: 678 | First byte: uppercase = critical, lowercase = ancillary 679 | Second byte: uppercase = public, lowercase = private 680 | Third byte: must be uppercase 681 | Fourth byte: uppercase = unsafe to copy, lowercase = safe to copy 682 | */ 683 | 684 | /* 685 | Gets the length of the data of the chunk. Total chunk length has 12 bytes more. 686 | There must be at least 4 bytes to read from. If the result value is too large, 687 | it may be corrupt data. 688 | */ 689 | unsigned lodepng_chunk_length(const unsigned char* chunk); 690 | 691 | /*puts the 4-byte type in null terminated string*/ 692 | void lodepng_chunk_type(char type[5], const unsigned char* chunk); 693 | 694 | /*check if the type is the given type*/ 695 | unsigned char lodepng_chunk_type_equals(const unsigned char* chunk, const char* type); 696 | 697 | /*0: it's one of the critical chunk types, 1: it's an ancillary chunk (see PNG standard)*/ 698 | unsigned char lodepng_chunk_ancillary(const unsigned char* chunk); 699 | 700 | /*0: public, 1: private (see PNG standard)*/ 701 | unsigned char lodepng_chunk_private(const unsigned char* chunk); 702 | 703 | /*0: the chunk is unsafe to copy, 1: the chunk is safe to copy (see PNG standard)*/ 704 | unsigned char lodepng_chunk_safetocopy(const unsigned char* chunk); 705 | 706 | /*get pointer to the data of the chunk, where the input points to the header of the chunk*/ 707 | unsigned char* lodepng_chunk_data(unsigned char* chunk); 708 | const unsigned char* lodepng_chunk_data_const(const unsigned char* chunk); 709 | 710 | /*returns 0 if the crc is correct, 1 if it's incorrect (0 for OK as usual!)*/ 711 | unsigned lodepng_chunk_check_crc(const unsigned char* chunk); 712 | 713 | /*generates the correct CRC from the data and puts it in the last 4 bytes of the chunk*/ 714 | void lodepng_chunk_generate_crc(unsigned char* chunk); 715 | 716 | /*iterate to next chunks. don't use on IEND chunk, as there is no next chunk then*/ 717 | unsigned char* lodepng_chunk_next(unsigned char* chunk); 718 | const unsigned char* lodepng_chunk_next_const(const unsigned char* chunk); 719 | 720 | /* 721 | Appends chunk to the data in out. The given chunk should already have its chunk header. 722 | The out variable and outlength are updated to reflect the new reallocated buffer. 723 | Returns error code (0 if it went ok) 724 | */ 725 | unsigned lodepng_chunk_append(unsigned char** out, size_t* outlength, const unsigned char* chunk); 726 | 727 | /* 728 | Appends new chunk to out. The chunk to append is given by giving its length, type 729 | and data separately. The type is a 4-letter string. 730 | The out variable and outlength are updated to reflect the new reallocated buffer. 731 | Returne error code (0 if it went ok) 732 | */ 733 | unsigned lodepng_chunk_create(unsigned char** out, size_t* outlength, unsigned length, 734 | const char* type, const unsigned char* data); 735 | 736 | 737 | /*Calculate CRC32 of buffer*/ 738 | unsigned lodepng_crc32(const unsigned char* buf, size_t len); 739 | #endif /*LODEPNG_COMPILE_PNG*/ 740 | 741 | 742 | #ifdef LODEPNG_COMPILE_ZLIB 743 | /* 744 | This zlib part can be used independently to zlib compress and decompress a 745 | buffer. It cannot be used to create gzip files however, and it only supports the 746 | part of zlib that is required for PNG, it does not support dictionaries. 747 | */ 748 | 749 | #ifdef LODEPNG_COMPILE_DECODER 750 | /*Inflate a buffer. Inflate is the decompression step of deflate. Out buffer must be freed after use.*/ 751 | unsigned lodepng_inflate(unsigned char** out, size_t* outsize, 752 | const unsigned char* in, size_t insize, 753 | const LodePNGDecompressSettings* settings); 754 | 755 | /* 756 | Decompresses Zlib data. Reallocates the out buffer and appends the data. The 757 | data must be according to the zlib specification. 758 | Either, *out must be NULL and *outsize must be 0, or, *out must be a valid 759 | buffer and *outsize its size in bytes. out must be freed by user after usage. 760 | */ 761 | unsigned lodepng_zlib_decompress(unsigned char** out, size_t* outsize, 762 | const unsigned char* in, size_t insize, 763 | const LodePNGDecompressSettings* settings); 764 | #endif /*LODEPNG_COMPILE_DECODER*/ 765 | 766 | #ifdef LODEPNG_COMPILE_ENCODER 767 | /* 768 | Compresses data with Zlib. Reallocates the out buffer and appends the data. 769 | Zlib adds a small header and trailer around the deflate data. 770 | The data is output in the format of the zlib specification. 771 | Either, *out must be NULL and *outsize must be 0, or, *out must be a valid 772 | buffer and *outsize its size in bytes. out must be freed by user after usage. 773 | */ 774 | unsigned lodepng_zlib_compress(unsigned char** out, size_t* outsize, 775 | const unsigned char* in, size_t insize, 776 | const LodePNGCompressSettings* settings); 777 | 778 | /* 779 | Find length-limited Huffman code for given frequencies. This function is in the 780 | public interface only for tests, it's used internally by lodepng_deflate. 781 | */ 782 | unsigned lodepng_huffman_code_lengths(unsigned* lengths, const unsigned* frequencies, 783 | size_t numcodes, unsigned maxbitlen); 784 | 785 | /*Compress a buffer with deflate. See RFC 1951. Out buffer must be freed after use.*/ 786 | unsigned lodepng_deflate(unsigned char** out, size_t* outsize, 787 | const unsigned char* in, size_t insize, 788 | const LodePNGCompressSettings* settings); 789 | 790 | #endif /*LODEPNG_COMPILE_ENCODER*/ 791 | #endif /*LODEPNG_COMPILE_ZLIB*/ 792 | 793 | #ifdef LODEPNG_COMPILE_DISK 794 | /* 795 | Load a file from disk into buffer. The function allocates the out buffer, and 796 | after usage you should free it. 797 | out: output parameter, contains pointer to loaded buffer. 798 | outsize: output parameter, size of the allocated out buffer 799 | filename: the path to the file to load 800 | return value: error code (0 means ok) 801 | */ 802 | unsigned lodepng_load_file(unsigned char** out, size_t* outsize, const char* filename); 803 | 804 | /* 805 | Save a file from buffer to disk. Warning, if it exists, this function overwrites 806 | the file without warning! 807 | buffer: the buffer to write 808 | buffersize: size of the buffer to write 809 | filename: the path to the file to save to 810 | return value: error code (0 means ok) 811 | */ 812 | unsigned lodepng_save_file(const unsigned char* buffer, size_t buffersize, const char* filename); 813 | #endif /*LODEPNG_COMPILE_DISK*/ 814 | 815 | #ifdef LODEPNG_COMPILE_CPP 816 | /* The LodePNG C++ wrapper uses std::vectors instead of manually allocated memory buffers. */ 817 | namespace lodepng 818 | { 819 | #ifdef LODEPNG_COMPILE_PNG 820 | class State : public LodePNGState 821 | { 822 | public: 823 | State(); 824 | State(const State& other); 825 | virtual ~State(); 826 | State& operator=(const State& other); 827 | }; 828 | 829 | #ifdef LODEPNG_COMPILE_DECODER 830 | /* Same as other lodepng::decode, but using a State for more settings and information. */ 831 | unsigned decode(std::vector& out, unsigned& w, unsigned& h, 832 | State& state, 833 | const unsigned char* in, size_t insize); 834 | unsigned decode(std::vector& out, unsigned& w, unsigned& h, 835 | State& state, 836 | const std::vector& in); 837 | #endif /*LODEPNG_COMPILE_DECODER*/ 838 | 839 | #ifdef LODEPNG_COMPILE_ENCODER 840 | /* Same as other lodepng::encode, but using a State for more settings and information. */ 841 | unsigned encode(std::vector& out, 842 | const unsigned char* in, unsigned w, unsigned h, 843 | State& state); 844 | unsigned encode(std::vector& out, 845 | const std::vector& in, unsigned w, unsigned h, 846 | State& state); 847 | #endif /*LODEPNG_COMPILE_ENCODER*/ 848 | 849 | #ifdef LODEPNG_COMPILE_DISK 850 | /* 851 | Load a file from disk into an std::vector. 852 | return value: error code (0 means ok) 853 | */ 854 | unsigned load_file(std::vector& buffer, const std::string& filename); 855 | 856 | /* 857 | Save the binary data in an std::vector to a file on disk. The file is overwritten 858 | without warning. 859 | */ 860 | unsigned save_file(const std::vector& buffer, const std::string& filename); 861 | #endif /* LODEPNG_COMPILE_DISK */ 862 | #endif /* LODEPNG_COMPILE_PNG */ 863 | 864 | #ifdef LODEPNG_COMPILE_ZLIB 865 | #ifdef LODEPNG_COMPILE_DECODER 866 | /* Zlib-decompress an unsigned char buffer */ 867 | unsigned decompress(std::vector& out, const unsigned char* in, size_t insize, 868 | const LodePNGDecompressSettings& settings = lodepng_default_decompress_settings); 869 | 870 | /* Zlib-decompress an std::vector */ 871 | unsigned decompress(std::vector& out, const std::vector& in, 872 | const LodePNGDecompressSettings& settings = lodepng_default_decompress_settings); 873 | #endif /* LODEPNG_COMPILE_DECODER */ 874 | 875 | #ifdef LODEPNG_COMPILE_ENCODER 876 | /* Zlib-compress an unsigned char buffer */ 877 | unsigned compress(std::vector& out, const unsigned char* in, size_t insize, 878 | const LodePNGCompressSettings& settings = lodepng_default_compress_settings); 879 | 880 | /* Zlib-compress an std::vector */ 881 | unsigned compress(std::vector& out, const std::vector& in, 882 | const LodePNGCompressSettings& settings = lodepng_default_compress_settings); 883 | #endif /* LODEPNG_COMPILE_ENCODER */ 884 | #endif /* LODEPNG_COMPILE_ZLIB */ 885 | } /* namespace lodepng */ 886 | #endif /*LODEPNG_COMPILE_CPP*/ 887 | 888 | /* 889 | TODO: 890 | [.] test if there are no memory leaks or security exploits - done a lot but needs to be checked often 891 | [.] check compatibility with various compilers - done but needs to be redone for every newer version 892 | [X] converting color to 16-bit per channel types 893 | [ ] read all public PNG chunk types (but never let the color profile and gamma ones touch RGB values) 894 | [ ] make sure encoder generates no chunks with size > (2^31)-1 895 | [ ] partial decoding (stream processing) 896 | [X] let the "isFullyOpaque" function check color keys and transparent palettes too 897 | [X] better name for the variables "codes", "codesD", "codelengthcodes", "clcl" and "lldl" 898 | [ ] don't stop decoding on errors like 69, 57, 58 (make warnings) 899 | [ ] let the C++ wrapper catch exceptions coming from the standard library and return LodePNG error codes 900 | [ ] allow user to provide custom color conversion functions, e.g. for premultiplied alpha, padding bits or not, ... 901 | [ ] allow user to give data (void*) to custom allocator 902 | */ 903 | 904 | #endif /*LODEPNG_H inclusion guard*/ 905 | 906 | /* 907 | LodePNG Documentation 908 | --------------------- 909 | 910 | 0. table of contents 911 | -------------------- 912 | 913 | 1. about 914 | 1.1. supported features 915 | 1.2. features not supported 916 | 2. C and C++ version 917 | 3. security 918 | 4. decoding 919 | 5. encoding 920 | 6. color conversions 921 | 6.1. PNG color types 922 | 6.2. color conversions 923 | 6.3. padding bits 924 | 6.4. A note about 16-bits per channel and endianness 925 | 7. error values 926 | 8. chunks and PNG editing 927 | 9. compiler support 928 | 10. examples 929 | 10.1. decoder C++ example 930 | 10.2. decoder C example 931 | 11. state settings reference 932 | 12. changes 933 | 13. contact information 934 | 935 | 936 | 1. about 937 | -------- 938 | 939 | PNG is a file format to store raster images losslessly with good compression, 940 | supporting different color types and alpha channel. 941 | 942 | LodePNG is a PNG codec according to the Portable Network Graphics (PNG) 943 | Specification (Second Edition) - W3C Recommendation 10 November 2003. 944 | 945 | The specifications used are: 946 | 947 | *) Portable Network Graphics (PNG) Specification (Second Edition): 948 | http://www.w3.org/TR/2003/REC-PNG-20031110 949 | *) RFC 1950 ZLIB Compressed Data Format version 3.3: 950 | http://www.gzip.org/zlib/rfc-zlib.html 951 | *) RFC 1951 DEFLATE Compressed Data Format Specification ver 1.3: 952 | http://www.gzip.org/zlib/rfc-deflate.html 953 | 954 | The most recent version of LodePNG can currently be found at 955 | http://lodev.org/lodepng/ 956 | 957 | LodePNG works both in C (ISO C90) and C++, with a C++ wrapper that adds 958 | extra functionality. 959 | 960 | LodePNG exists out of two files: 961 | -lodepng.h: the header file for both C and C++ 962 | -lodepng.c(pp): give it the name lodepng.c or lodepng.cpp (or .cc) depending on your usage 963 | 964 | If you want to start using LodePNG right away without reading this doc, get the 965 | examples from the LodePNG website to see how to use it in code, or check the 966 | smaller examples in chapter 13 here. 967 | 968 | LodePNG is simple but only supports the basic requirements. To achieve 969 | simplicity, the following design choices were made: There are no dependencies 970 | on any external library. There are functions to decode and encode a PNG with 971 | a single function call, and extended versions of these functions taking a 972 | LodePNGState struct allowing to specify or get more information. By default 973 | the colors of the raw image are always RGB or RGBA, no matter what color type 974 | the PNG file uses. To read and write files, there are simple functions to 975 | convert the files to/from buffers in memory. 976 | 977 | This all makes LodePNG suitable for loading textures in games, demos and small 978 | programs, ... It's less suitable for full fledged image editors, loading PNGs 979 | over network (it requires all the image data to be available before decoding can 980 | begin), life-critical systems, ... 981 | 982 | 1.1. supported features 983 | ----------------------- 984 | 985 | The following features are supported by the decoder: 986 | 987 | *) decoding of PNGs with any color type, bit depth and interlace mode, to a 24- or 32-bit color raw image, 988 | or the same color type as the PNG 989 | *) encoding of PNGs, from any raw image to 24- or 32-bit color, or the same color type as the raw image 990 | *) Adam7 interlace and deinterlace for any color type 991 | *) loading the image from harddisk or decoding it from a buffer from other sources than harddisk 992 | *) support for alpha channels, including RGBA color model, translucent palettes and color keying 993 | *) zlib decompression (inflate) 994 | *) zlib compression (deflate) 995 | *) CRC32 and ADLER32 checksums 996 | *) handling of unknown chunks, allowing making a PNG editor that stores custom and unknown chunks. 997 | *) the following chunks are supported (generated/interpreted) by both encoder and decoder: 998 | IHDR: header information 999 | PLTE: color palette 1000 | IDAT: pixel data 1001 | IEND: the final chunk 1002 | tRNS: transparency for palettized images 1003 | tEXt: textual information 1004 | zTXt: compressed textual information 1005 | iTXt: international textual information 1006 | bKGD: suggested background color 1007 | pHYs: physical dimensions 1008 | tIME: modification time 1009 | 1010 | 1.2. features not supported 1011 | --------------------------- 1012 | 1013 | The following features are _not_ supported: 1014 | 1015 | *) some features needed to make a conformant PNG-Editor might be still missing. 1016 | *) partial loading/stream processing. All data must be available and is processed in one call. 1017 | *) The following public chunks are not supported but treated as unknown chunks by LodePNG 1018 | cHRM, gAMA, iCCP, sRGB, sBIT, hIST, sPLT 1019 | Some of these are not supported on purpose: LodePNG wants to provide the RGB values 1020 | stored in the pixels, not values modified by system dependent gamma or color models. 1021 | 1022 | 1023 | 2. C and C++ version 1024 | -------------------- 1025 | 1026 | The C version uses buffers allocated with alloc that you need to free() 1027 | yourself. You need to use init and cleanup functions for each struct whenever 1028 | using a struct from the C version to avoid exploits and memory leaks. 1029 | 1030 | The C++ version has extra functions with std::vectors in the interface and the 1031 | lodepng::State class which is a LodePNGState with constructor and destructor. 1032 | 1033 | These files work without modification for both C and C++ compilers because all 1034 | the additional C++ code is in "#ifdef __cplusplus" blocks that make C-compilers 1035 | ignore it, and the C code is made to compile both with strict ISO C90 and C++. 1036 | 1037 | To use the C++ version, you need to rename the source file to lodepng.cpp 1038 | (instead of lodepng.c), and compile it with a C++ compiler. 1039 | 1040 | To use the C version, you need to rename the source file to lodepng.c (instead 1041 | of lodepng.cpp), and compile it with a C compiler. 1042 | 1043 | 1044 | 3. Security 1045 | ----------- 1046 | 1047 | Even if carefully designed, it's always possible that LodePNG contains possible 1048 | exploits. If you discover one, please let me know, and it will be fixed. 1049 | 1050 | When using LodePNG, care has to be taken with the C version of LodePNG, as well 1051 | as the C-style structs when working with C++. The following conventions are used 1052 | for all C-style structs: 1053 | 1054 | -if a struct has a corresponding init function, always call the init function when making a new one 1055 | -if a struct has a corresponding cleanup function, call it before the struct disappears to avoid memory leaks 1056 | -if a struct has a corresponding copy function, use the copy function instead of "=". 1057 | The destination must also be inited already. 1058 | 1059 | 1060 | 4. Decoding 1061 | ----------- 1062 | 1063 | Decoding converts a PNG compressed image to a raw pixel buffer. 1064 | 1065 | Most documentation on using the decoder is at its declarations in the header 1066 | above. For C, simple decoding can be done with functions such as 1067 | lodepng_decode32, and more advanced decoding can be done with the struct 1068 | LodePNGState and lodepng_decode. For C++, all decoding can be done with the 1069 | various lodepng::decode functions, and lodepng::State can be used for advanced 1070 | features. 1071 | 1072 | When using the LodePNGState, it uses the following fields for decoding: 1073 | *) LodePNGInfo info_png: it stores extra information about the PNG (the input) in here 1074 | *) LodePNGColorMode info_raw: here you can say what color mode of the raw image (the output) you want to get 1075 | *) LodePNGDecoderSettings decoder: you can specify a few extra settings for the decoder to use 1076 | 1077 | LodePNGInfo info_png 1078 | -------------------- 1079 | 1080 | After decoding, this contains extra information of the PNG image, except the actual 1081 | pixels, width and height because these are already gotten directly from the decoder 1082 | functions. 1083 | 1084 | It contains for example the original color type of the PNG image, text comments, 1085 | suggested background color, etc... More details about the LodePNGInfo struct are 1086 | at its declaration documentation. 1087 | 1088 | LodePNGColorMode info_raw 1089 | ------------------------- 1090 | 1091 | When decoding, here you can specify which color type you want 1092 | the resulting raw image to be. If this is different from the colortype of the 1093 | PNG, then the decoder will automatically convert the result. This conversion 1094 | always works, except if you want it to convert a color PNG to greyscale or to 1095 | a palette with missing colors. 1096 | 1097 | By default, 32-bit color is used for the result. 1098 | 1099 | LodePNGDecoderSettings decoder 1100 | ------------------------------ 1101 | 1102 | The settings can be used to ignore the errors created by invalid CRC and Adler32 1103 | chunks, and to disable the decoding of tEXt chunks. 1104 | 1105 | There's also a setting color_convert, true by default. If false, no conversion 1106 | is done, the resulting data will be as it was in the PNG (after decompression) 1107 | and you'll have to puzzle the colors of the pixels together yourself using the 1108 | color type information in the LodePNGInfo. 1109 | 1110 | 1111 | 5. Encoding 1112 | ----------- 1113 | 1114 | Encoding converts a raw pixel buffer to a PNG compressed image. 1115 | 1116 | Most documentation on using the encoder is at its declarations in the header 1117 | above. For C, simple encoding can be done with functions such as 1118 | lodepng_encode32, and more advanced decoding can be done with the struct 1119 | LodePNGState and lodepng_encode. For C++, all encoding can be done with the 1120 | various lodepng::encode functions, and lodepng::State can be used for advanced 1121 | features. 1122 | 1123 | Like the decoder, the encoder can also give errors. However it gives less errors 1124 | since the encoder input is trusted, the decoder input (a PNG image that could 1125 | be forged by anyone) is not trusted. 1126 | 1127 | When using the LodePNGState, it uses the following fields for encoding: 1128 | *) LodePNGInfo info_png: here you specify how you want the PNG (the output) to be. 1129 | *) LodePNGColorMode info_raw: here you say what color type of the raw image (the input) has 1130 | *) LodePNGEncoderSettings encoder: you can specify a few settings for the encoder to use 1131 | 1132 | LodePNGInfo info_png 1133 | -------------------- 1134 | 1135 | When encoding, you use this the opposite way as when decoding: for encoding, 1136 | you fill in the values you want the PNG to have before encoding. By default it's 1137 | not needed to specify a color type for the PNG since it's automatically chosen, 1138 | but it's possible to choose it yourself given the right settings. 1139 | 1140 | The encoder will not always exactly match the LodePNGInfo struct you give, 1141 | it tries as close as possible. Some things are ignored by the encoder. The 1142 | encoder uses, for example, the following settings from it when applicable: 1143 | colortype and bitdepth, text chunks, time chunk, the color key, the palette, the 1144 | background color, the interlace method, unknown chunks, ... 1145 | 1146 | When encoding to a PNG with colortype 3, the encoder will generate a PLTE chunk. 1147 | If the palette contains any colors for which the alpha channel is not 255 (so 1148 | there are translucent colors in the palette), it'll add a tRNS chunk. 1149 | 1150 | LodePNGColorMode info_raw 1151 | ------------------------- 1152 | 1153 | You specify the color type of the raw image that you give to the input here, 1154 | including a possible transparent color key and palette you happen to be using in 1155 | your raw image data. 1156 | 1157 | By default, 32-bit color is assumed, meaning your input has to be in RGBA 1158 | format with 4 bytes (unsigned chars) per pixel. 1159 | 1160 | LodePNGEncoderSettings encoder 1161 | ------------------------------ 1162 | 1163 | The following settings are supported (some are in sub-structs): 1164 | *) auto_convert: when this option is enabled, the encoder will 1165 | automatically choose the smallest possible color mode (including color key) that 1166 | can encode the colors of all pixels without information loss. 1167 | *) btype: the block type for LZ77. 0 = uncompressed, 1 = fixed huffman tree, 1168 | 2 = dynamic huffman tree (best compression). Should be 2 for proper 1169 | compression. 1170 | *) use_lz77: whether or not to use LZ77 for compressed block types. Should be 1171 | true for proper compression. 1172 | *) windowsize: the window size used by the LZ77 encoder (1 - 32768). Has value 1173 | 2048 by default, but can be set to 32768 for better, but slow, compression. 1174 | *) force_palette: if colortype is 2 or 6, you can make the encoder write a PLTE 1175 | chunk if force_palette is true. This can used as suggested palette to convert 1176 | to by viewers that don't support more than 256 colors (if those still exist) 1177 | *) add_id: add text chunk "Encoder: LodePNG " to the image. 1178 | *) text_compression: default 1. If 1, it'll store texts as zTXt instead of tEXt chunks. 1179 | zTXt chunks use zlib compression on the text. This gives a smaller result on 1180 | large texts but a larger result on small texts (such as a single program name). 1181 | It's all tEXt or all zTXt though, there's no separate setting per text yet. 1182 | 1183 | 1184 | 6. color conversions 1185 | -------------------- 1186 | 1187 | An important thing to note about LodePNG, is that the color type of the PNG, and 1188 | the color type of the raw image, are completely independent. By default, when 1189 | you decode a PNG, you get the result as a raw image in the color type you want, 1190 | no matter whether the PNG was encoded with a palette, greyscale or RGBA color. 1191 | And if you encode an image, by default LodePNG will automatically choose the PNG 1192 | color type that gives good compression based on the values of colors and amount 1193 | of colors in the image. It can be configured to let you control it instead as 1194 | well, though. 1195 | 1196 | To be able to do this, LodePNG does conversions from one color mode to another. 1197 | It can convert from almost any color type to any other color type, except the 1198 | following conversions: RGB to greyscale is not supported, and converting to a 1199 | palette when the palette doesn't have a required color is not supported. This is 1200 | not supported on purpose: this is information loss which requires a color 1201 | reduction algorithm that is beyong the scope of a PNG encoder (yes, RGB to grey 1202 | is easy, but there are multiple ways if you want to give some channels more 1203 | weight). 1204 | 1205 | By default, when decoding, you get the raw image in 32-bit RGBA or 24-bit RGB 1206 | color, no matter what color type the PNG has. And by default when encoding, 1207 | LodePNG automatically picks the best color model for the output PNG, and expects 1208 | the input image to be 32-bit RGBA or 24-bit RGB. So, unless you want to control 1209 | the color format of the images yourself, you can skip this chapter. 1210 | 1211 | 6.1. PNG color types 1212 | -------------------- 1213 | 1214 | A PNG image can have many color types, ranging from 1-bit color to 64-bit color, 1215 | as well as palettized color modes. After the zlib decompression and unfiltering 1216 | in the PNG image is done, the raw pixel data will have that color type and thus 1217 | a certain amount of bits per pixel. If you want the output raw image after 1218 | decoding to have another color type, a conversion is done by LodePNG. 1219 | 1220 | The PNG specification gives the following color types: 1221 | 1222 | 0: greyscale, bit depths 1, 2, 4, 8, 16 1223 | 2: RGB, bit depths 8 and 16 1224 | 3: palette, bit depths 1, 2, 4 and 8 1225 | 4: greyscale with alpha, bit depths 8 and 16 1226 | 6: RGBA, bit depths 8 and 16 1227 | 1228 | Bit depth is the amount of bits per pixel per color channel. So the total amount 1229 | of bits per pixel is: amount of channels * bitdepth. 1230 | 1231 | 6.2. color conversions 1232 | ---------------------- 1233 | 1234 | As explained in the sections about the encoder and decoder, you can specify 1235 | color types and bit depths in info_png and info_raw to change the default 1236 | behaviour. 1237 | 1238 | If, when decoding, you want the raw image to be something else than the default, 1239 | you need to set the color type and bit depth you want in the LodePNGColorMode, 1240 | or the parameters colortype and bitdepth of the simple decoding function. 1241 | 1242 | If, when encoding, you use another color type than the default in the raw input 1243 | image, you need to specify its color type and bit depth in the LodePNGColorMode 1244 | of the raw image, or use the parameters colortype and bitdepth of the simple 1245 | encoding function. 1246 | 1247 | If, when encoding, you don't want LodePNG to choose the output PNG color type 1248 | but control it yourself, you need to set auto_convert in the encoder settings 1249 | to false, and specify the color type you want in the LodePNGInfo of the 1250 | encoder (including palette: it can generate a palette if auto_convert is true, 1251 | otherwise not). 1252 | 1253 | If the input and output color type differ (whether user chosen or auto chosen), 1254 | LodePNG will do a color conversion, which follows the rules below, and may 1255 | sometimes result in an error. 1256 | 1257 | To avoid some confusion: 1258 | -the decoder converts from PNG to raw image 1259 | -the encoder converts from raw image to PNG 1260 | -the colortype and bitdepth in LodePNGColorMode info_raw, are those of the raw image 1261 | -the colortype and bitdepth in the color field of LodePNGInfo info_png, are those of the PNG 1262 | -when encoding, the color type in LodePNGInfo is ignored if auto_convert 1263 | is enabled, it is automatically generated instead 1264 | -when decoding, the color type in LodePNGInfo is set by the decoder to that of the original 1265 | PNG image, but it can be ignored since the raw image has the color type you requested instead 1266 | -if the color type of the LodePNGColorMode and PNG image aren't the same, a conversion 1267 | between the color types is done if the color types are supported. If it is not 1268 | supported, an error is returned. If the types are the same, no conversion is done. 1269 | -even though some conversions aren't supported, LodePNG supports loading PNGs from any 1270 | colortype and saving PNGs to any colortype, sometimes it just requires preparing 1271 | the raw image correctly before encoding. 1272 | -both encoder and decoder use the same color converter. 1273 | 1274 | Non supported color conversions: 1275 | -color to greyscale: no error is thrown, but the result will look ugly because 1276 | only the red channel is taken 1277 | -anything to palette when that palette does not have that color in it: in this 1278 | case an error is thrown 1279 | 1280 | Supported color conversions: 1281 | -anything to 8-bit RGB, 8-bit RGBA, 16-bit RGB, 16-bit RGBA 1282 | -any grey or grey+alpha, to grey or grey+alpha 1283 | -anything to a palette, as long as the palette has the requested colors in it 1284 | -removing alpha channel 1285 | -higher to smaller bitdepth, and vice versa 1286 | 1287 | If you want no color conversion to be done (e.g. for speed or control): 1288 | -In the encoder, you can make it save a PNG with any color type by giving the 1289 | raw color mode and LodePNGInfo the same color mode, and setting auto_convert to 1290 | false. 1291 | -In the decoder, you can make it store the pixel data in the same color type 1292 | as the PNG has, by setting the color_convert setting to false. Settings in 1293 | info_raw are then ignored. 1294 | 1295 | The function lodepng_convert does the color conversion. It is available in the 1296 | interface but normally isn't needed since the encoder and decoder already call 1297 | it. 1298 | 1299 | 6.3. padding bits 1300 | ----------------- 1301 | 1302 | In the PNG file format, if a less than 8-bit per pixel color type is used and the scanlines 1303 | have a bit amount that isn't a multiple of 8, then padding bits are used so that each 1304 | scanline starts at a fresh byte. But that is NOT true for the LodePNG raw input and output. 1305 | The raw input image you give to the encoder, and the raw output image you get from the decoder 1306 | will NOT have these padding bits, e.g. in the case of a 1-bit image with a width 1307 | of 7 pixels, the first pixel of the second scanline will the the 8th bit of the first byte, 1308 | not the first bit of a new byte. 1309 | 1310 | 6.4. A note about 16-bits per channel and endianness 1311 | ---------------------------------------------------- 1312 | 1313 | LodePNG uses unsigned char arrays for 16-bit per channel colors too, just like 1314 | for any other color format. The 16-bit values are stored in big endian (most 1315 | significant byte first) in these arrays. This is the opposite order of the 1316 | little endian used by x86 CPU's. 1317 | 1318 | LodePNG always uses big endian because the PNG file format does so internally. 1319 | Conversions to other formats than PNG uses internally are not supported by 1320 | LodePNG on purpose, there are myriads of formats, including endianness of 16-bit 1321 | colors, the order in which you store R, G, B and A, and so on. Supporting and 1322 | converting to/from all that is outside the scope of LodePNG. 1323 | 1324 | This may mean that, depending on your use case, you may want to convert the big 1325 | endian output of LodePNG to little endian with a for loop. This is certainly not 1326 | always needed, many applications and libraries support big endian 16-bit colors 1327 | anyway, but it means you cannot simply cast the unsigned char* buffer to an 1328 | unsigned short* buffer on x86 CPUs. 1329 | 1330 | 1331 | 7. error values 1332 | --------------- 1333 | 1334 | All functions in LodePNG that return an error code, return 0 if everything went 1335 | OK, or a non-zero code if there was an error. 1336 | 1337 | The meaning of the LodePNG error values can be retrieved with the function 1338 | lodepng_error_text: given the numerical error code, it returns a description 1339 | of the error in English as a string. 1340 | 1341 | Check the implementation of lodepng_error_text to see the meaning of each code. 1342 | 1343 | 1344 | 8. chunks and PNG editing 1345 | ------------------------- 1346 | 1347 | If you want to add extra chunks to a PNG you encode, or use LodePNG for a PNG 1348 | editor that should follow the rules about handling of unknown chunks, or if your 1349 | program is able to read other types of chunks than the ones handled by LodePNG, 1350 | then that's possible with the chunk functions of LodePNG. 1351 | 1352 | A PNG chunk has the following layout: 1353 | 1354 | 4 bytes length 1355 | 4 bytes type name 1356 | length bytes data 1357 | 4 bytes CRC 1358 | 1359 | 8.1. iterating through chunks 1360 | ----------------------------- 1361 | 1362 | If you have a buffer containing the PNG image data, then the first chunk (the 1363 | IHDR chunk) starts at byte number 8 of that buffer. The first 8 bytes are the 1364 | signature of the PNG and are not part of a chunk. But if you start at byte 8 1365 | then you have a chunk, and can check the following things of it. 1366 | 1367 | NOTE: none of these functions check for memory buffer boundaries. To avoid 1368 | exploits, always make sure the buffer contains all the data of the chunks. 1369 | When using lodepng_chunk_next, make sure the returned value is within the 1370 | allocated memory. 1371 | 1372 | unsigned lodepng_chunk_length(const unsigned char* chunk): 1373 | 1374 | Get the length of the chunk's data. The total chunk length is this length + 12. 1375 | 1376 | void lodepng_chunk_type(char type[5], const unsigned char* chunk): 1377 | unsigned char lodepng_chunk_type_equals(const unsigned char* chunk, const char* type): 1378 | 1379 | Get the type of the chunk or compare if it's a certain type 1380 | 1381 | unsigned char lodepng_chunk_critical(const unsigned char* chunk): 1382 | unsigned char lodepng_chunk_private(const unsigned char* chunk): 1383 | unsigned char lodepng_chunk_safetocopy(const unsigned char* chunk): 1384 | 1385 | Check if the chunk is critical in the PNG standard (only IHDR, PLTE, IDAT and IEND are). 1386 | Check if the chunk is private (public chunks are part of the standard, private ones not). 1387 | Check if the chunk is safe to copy. If it's not, then, when modifying data in a critical 1388 | chunk, unsafe to copy chunks of the old image may NOT be saved in the new one if your 1389 | program doesn't handle that type of unknown chunk. 1390 | 1391 | unsigned char* lodepng_chunk_data(unsigned char* chunk): 1392 | const unsigned char* lodepng_chunk_data_const(const unsigned char* chunk): 1393 | 1394 | Get a pointer to the start of the data of the chunk. 1395 | 1396 | unsigned lodepng_chunk_check_crc(const unsigned char* chunk): 1397 | void lodepng_chunk_generate_crc(unsigned char* chunk): 1398 | 1399 | Check if the crc is correct or generate a correct one. 1400 | 1401 | unsigned char* lodepng_chunk_next(unsigned char* chunk): 1402 | const unsigned char* lodepng_chunk_next_const(const unsigned char* chunk): 1403 | 1404 | Iterate to the next chunk. This works if you have a buffer with consecutive chunks. Note that these 1405 | functions do no boundary checking of the allocated data whatsoever, so make sure there is enough 1406 | data available in the buffer to be able to go to the next chunk. 1407 | 1408 | unsigned lodepng_chunk_append(unsigned char** out, size_t* outlength, const unsigned char* chunk): 1409 | unsigned lodepng_chunk_create(unsigned char** out, size_t* outlength, unsigned length, 1410 | const char* type, const unsigned char* data): 1411 | 1412 | These functions are used to create new chunks that are appended to the data in *out that has 1413 | length *outlength. The append function appends an existing chunk to the new data. The create 1414 | function creates a new chunk with the given parameters and appends it. Type is the 4-letter 1415 | name of the chunk. 1416 | 1417 | 8.2. chunks in info_png 1418 | ----------------------- 1419 | 1420 | The LodePNGInfo struct contains fields with the unknown chunk in it. It has 3 1421 | buffers (each with size) to contain 3 types of unknown chunks: 1422 | the ones that come before the PLTE chunk, the ones that come between the PLTE 1423 | and the IDAT chunks, and the ones that come after the IDAT chunks. 1424 | It's necessary to make the distionction between these 3 cases because the PNG 1425 | standard forces to keep the ordering of unknown chunks compared to the critical 1426 | chunks, but does not force any other ordering rules. 1427 | 1428 | info_png.unknown_chunks_data[0] is the chunks before PLTE 1429 | info_png.unknown_chunks_data[1] is the chunks after PLTE, before IDAT 1430 | info_png.unknown_chunks_data[2] is the chunks after IDAT 1431 | 1432 | The chunks in these 3 buffers can be iterated through and read by using the same 1433 | way described in the previous subchapter. 1434 | 1435 | When using the decoder to decode a PNG, you can make it store all unknown chunks 1436 | if you set the option settings.remember_unknown_chunks to 1. By default, this 1437 | option is off (0). 1438 | 1439 | The encoder will always encode unknown chunks that are stored in the info_png. 1440 | If you need it to add a particular chunk that isn't known by LodePNG, you can 1441 | use lodepng_chunk_append or lodepng_chunk_create to the chunk data in 1442 | info_png.unknown_chunks_data[x]. 1443 | 1444 | Chunks that are known by LodePNG should not be added in that way. E.g. to make 1445 | LodePNG add a bKGD chunk, set background_defined to true and add the correct 1446 | parameters there instead. 1447 | 1448 | 1449 | 9. compiler support 1450 | ------------------- 1451 | 1452 | No libraries other than the current standard C library are needed to compile 1453 | LodePNG. For the C++ version, only the standard C++ library is needed on top. 1454 | Add the files lodepng.c(pp) and lodepng.h to your project, include 1455 | lodepng.h where needed, and your program can read/write PNG files. 1456 | 1457 | It is compatible with C90 and up, and C++03 and up. 1458 | 1459 | If performance is important, use optimization when compiling! For both the 1460 | encoder and decoder, this makes a large difference. 1461 | 1462 | Make sure that LodePNG is compiled with the same compiler of the same version 1463 | and with the same settings as the rest of the program, or the interfaces with 1464 | std::vectors and std::strings in C++ can be incompatible. 1465 | 1466 | CHAR_BITS must be 8 or higher, because LodePNG uses unsigned chars for octets. 1467 | 1468 | *) gcc and g++ 1469 | 1470 | LodePNG is developed in gcc so this compiler is natively supported. It gives no 1471 | warnings with compiler options "-Wall -Wextra -pedantic -ansi", with gcc and g++ 1472 | version 4.7.1 on Linux, 32-bit and 64-bit. 1473 | 1474 | *) Clang 1475 | 1476 | Fully supported and warning-free. 1477 | 1478 | *) Mingw 1479 | 1480 | The Mingw compiler (a port of gcc for Windows) should be fully supported by 1481 | LodePNG. 1482 | 1483 | *) Visual Studio and Visual C++ Express Edition 1484 | 1485 | LodePNG should be warning-free with warning level W4. Two warnings were disabled 1486 | with pragmas though: warning 4244 about implicit conversions, and warning 4996 1487 | where it wants to use a non-standard function fopen_s instead of the standard C 1488 | fopen. 1489 | 1490 | Visual Studio may want "stdafx.h" files to be included in each source file and 1491 | give an error "unexpected end of file while looking for precompiled header". 1492 | This is not standard C++ and will not be added to the stock LodePNG. You can 1493 | disable it for lodepng.cpp only by right clicking it, Properties, C/C++, 1494 | Precompiled Headers, and set it to Not Using Precompiled Headers there. 1495 | 1496 | NOTE: Modern versions of VS should be fully supported, but old versions, e.g. 1497 | VS6, are not guaranteed to work. 1498 | 1499 | *) Compilers on Macintosh 1500 | 1501 | LodePNG has been reported to work both with gcc and LLVM for Macintosh, both for 1502 | C and C++. 1503 | 1504 | *) Other Compilers 1505 | 1506 | If you encounter problems on any compilers, feel free to let me know and I may 1507 | try to fix it if the compiler is modern and standards complient. 1508 | 1509 | 1510 | 10. examples 1511 | ------------ 1512 | 1513 | This decoder example shows the most basic usage of LodePNG. More complex 1514 | examples can be found on the LodePNG website. 1515 | 1516 | 10.1. decoder C++ example 1517 | ------------------------- 1518 | 1519 | #include "lodepng.h" 1520 | #include 1521 | 1522 | int main(int argc, char *argv[]) 1523 | { 1524 | const char* filename = argc > 1 ? argv[1] : "test.png"; 1525 | 1526 | //load and decode 1527 | std::vector image; 1528 | unsigned width, height; 1529 | unsigned error = lodepng::decode(image, width, height, filename); 1530 | 1531 | //if there's an error, display it 1532 | if(error) std::cout << "decoder error " << error << ": " << lodepng_error_text(error) << std::endl; 1533 | 1534 | //the pixels are now in the vector "image", 4 bytes per pixel, ordered RGBARGBA..., use it as texture, draw it, ... 1535 | } 1536 | 1537 | 10.2. decoder C example 1538 | ----------------------- 1539 | 1540 | #include "lodepng.h" 1541 | 1542 | int main(int argc, char *argv[]) 1543 | { 1544 | unsigned error; 1545 | unsigned char* image; 1546 | size_t width, height; 1547 | const char* filename = argc > 1 ? argv[1] : "test.png"; 1548 | 1549 | error = lodepng_decode32_file(&image, &width, &height, filename); 1550 | 1551 | if(error) printf("decoder error %u: %s\n", error, lodepng_error_text(error)); 1552 | 1553 | / * use image here * / 1554 | 1555 | free(image); 1556 | return 0; 1557 | } 1558 | 1559 | 11. state settings reference 1560 | ---------------------------- 1561 | 1562 | A quick reference of some settings to set on the LodePNGState 1563 | 1564 | For decoding: 1565 | 1566 | state.decoder.zlibsettings.ignore_adler32: ignore ADLER32 checksums 1567 | state.decoder.zlibsettings.custom_...: use custom inflate function 1568 | state.decoder.ignore_crc: ignore CRC checksums 1569 | state.decoder.color_convert: convert internal PNG color to chosen one 1570 | state.decoder.read_text_chunks: whether to read in text metadata chunks 1571 | state.decoder.remember_unknown_chunks: whether to read in unknown chunks 1572 | state.info_raw.colortype: desired color type for decoded image 1573 | state.info_raw.bitdepth: desired bit depth for decoded image 1574 | state.info_raw....: more color settings, see struct LodePNGColorMode 1575 | state.info_png....: no settings for decoder but ouput, see struct LodePNGInfo 1576 | 1577 | For encoding: 1578 | 1579 | state.encoder.zlibsettings.btype: disable compression by setting it to 0 1580 | state.encoder.zlibsettings.use_lz77: use LZ77 in compression 1581 | state.encoder.zlibsettings.windowsize: tweak LZ77 windowsize 1582 | state.encoder.zlibsettings.minmatch: tweak min LZ77 length to match 1583 | state.encoder.zlibsettings.nicematch: tweak LZ77 match where to stop searching 1584 | state.encoder.zlibsettings.lazymatching: try one more LZ77 matching 1585 | state.encoder.zlibsettings.custom_...: use custom deflate function 1586 | state.encoder.auto_convert: choose optimal PNG color type, if 0 uses info_png 1587 | state.encoder.filter_palette_zero: PNG filter strategy for palette 1588 | state.encoder.filter_strategy: PNG filter strategy to encode with 1589 | state.encoder.force_palette: add palette even if not encoding to one 1590 | state.encoder.add_id: add LodePNG identifier and version as a text chunk 1591 | state.encoder.text_compression: use compressed text chunks for metadata 1592 | state.info_raw.colortype: color type of raw input image you provide 1593 | state.info_raw.bitdepth: bit depth of raw input image you provide 1594 | state.info_raw: more color settings, see struct LodePNGColorMode 1595 | state.info_png.color.colortype: desired color type if auto_convert is false 1596 | state.info_png.color.bitdepth: desired bit depth if auto_convert is false 1597 | state.info_png.color....: more color settings, see struct LodePNGColorMode 1598 | state.info_png....: more PNG related settings, see struct LodePNGInfo 1599 | 1600 | 1601 | 12. changes 1602 | ----------- 1603 | 1604 | The version number of LodePNG is the date of the change given in the format 1605 | yyyymmdd. 1606 | 1607 | Some changes aren't backwards compatible. Those are indicated with a (!) 1608 | symbol. 1609 | 1610 | *) 08 dec 2015: Made load_file function return error if file can't be opened. 1611 | *) 24 okt 2015: Bugfix with decoding to palette output. 1612 | *) 18 apr 2015: Boundary PM instead of just package-merge for faster encoding. 1613 | *) 23 aug 2014: Reduced needless memory usage of decoder. 1614 | *) 28 jun 2014: Removed fix_png setting, always support palette OOB for 1615 | simplicity. Made ColorProfile public. 1616 | *) 09 jun 2014: Faster encoder by fixing hash bug and more zeros optimization. 1617 | *) 22 dec 2013: Power of two windowsize required for optimization. 1618 | *) 15 apr 2013: Fixed bug with LAC_ALPHA and color key. 1619 | *) 25 mar 2013: Added an optional feature to ignore some PNG errors (fix_png). 1620 | *) 11 mar 2013 (!): Bugfix with custom free. Changed from "my" to "lodepng_" 1621 | prefix for the custom allocators and made it possible with a new #define to 1622 | use custom ones in your project without needing to change lodepng's code. 1623 | *) 28 jan 2013: Bugfix with color key. 1624 | *) 27 okt 2012: Tweaks in text chunk keyword length error handling. 1625 | *) 8 okt 2012 (!): Added new filter strategy (entropy) and new auto color mode. 1626 | (no palette). Better deflate tree encoding. New compression tweak settings. 1627 | Faster color conversions while decoding. Some internal cleanups. 1628 | *) 23 sep 2012: Reduced warnings in Visual Studio a little bit. 1629 | *) 1 sep 2012 (!): Removed #define's for giving custom (de)compression functions 1630 | and made it work with function pointers instead. 1631 | *) 23 jun 2012: Added more filter strategies. Made it easier to use custom alloc 1632 | and free functions and toggle #defines from compiler flags. Small fixes. 1633 | *) 6 may 2012 (!): Made plugging in custom zlib/deflate functions more flexible. 1634 | *) 22 apr 2012 (!): Made interface more consistent, renaming a lot. Removed 1635 | redundant C++ codec classes. Reduced amount of structs. Everything changed, 1636 | but it is cleaner now imho and functionality remains the same. Also fixed 1637 | several bugs and shrunk the implementation code. Made new samples. 1638 | *) 6 nov 2011 (!): By default, the encoder now automatically chooses the best 1639 | PNG color model and bit depth, based on the amount and type of colors of the 1640 | raw image. For this, autoLeaveOutAlphaChannel replaced by auto_choose_color. 1641 | *) 9 okt 2011: simpler hash chain implementation for the encoder. 1642 | *) 8 sep 2011: lz77 encoder lazy matching instead of greedy matching. 1643 | *) 23 aug 2011: tweaked the zlib compression parameters after benchmarking. 1644 | A bug with the PNG filtertype heuristic was fixed, so that it chooses much 1645 | better ones (it's quite significant). A setting to do an experimental, slow, 1646 | brute force search for PNG filter types is added. 1647 | *) 17 aug 2011 (!): changed some C zlib related function names. 1648 | *) 16 aug 2011: made the code less wide (max 120 characters per line). 1649 | *) 17 apr 2011: code cleanup. Bugfixes. Convert low to 16-bit per sample colors. 1650 | *) 21 feb 2011: fixed compiling for C90. Fixed compiling with sections disabled. 1651 | *) 11 dec 2010: encoding is made faster, based on suggestion by Peter Eastman 1652 | to optimize long sequences of zeros. 1653 | *) 13 nov 2010: added LodePNG_InfoColor_hasPaletteAlpha and 1654 | LodePNG_InfoColor_canHaveAlpha functions for convenience. 1655 | *) 7 nov 2010: added LodePNG_error_text function to get error code description. 1656 | *) 30 okt 2010: made decoding slightly faster 1657 | *) 26 okt 2010: (!) changed some C function and struct names (more consistent). 1658 | Reorganized the documentation and the declaration order in the header. 1659 | *) 08 aug 2010: only changed some comments and external samples. 1660 | *) 05 jul 2010: fixed bug thanks to warnings in the new gcc version. 1661 | *) 14 mar 2010: fixed bug where too much memory was allocated for char buffers. 1662 | *) 02 sep 2008: fixed bug where it could create empty tree that linux apps could 1663 | read by ignoring the problem but windows apps couldn't. 1664 | *) 06 jun 2008: added more error checks for out of memory cases. 1665 | *) 26 apr 2008: added a few more checks here and there to ensure more safety. 1666 | *) 06 mar 2008: crash with encoding of strings fixed 1667 | *) 02 feb 2008: support for international text chunks added (iTXt) 1668 | *) 23 jan 2008: small cleanups, and #defines to divide code in sections 1669 | *) 20 jan 2008: support for unknown chunks allowing using LodePNG for an editor. 1670 | *) 18 jan 2008: support for tIME and pHYs chunks added to encoder and decoder. 1671 | *) 17 jan 2008: ability to encode and decode compressed zTXt chunks added 1672 | Also various fixes, such as in the deflate and the padding bits code. 1673 | *) 13 jan 2008: Added ability to encode Adam7-interlaced images. Improved 1674 | filtering code of encoder. 1675 | *) 07 jan 2008: (!) changed LodePNG to use ISO C90 instead of C++. A 1676 | C++ wrapper around this provides an interface almost identical to before. 1677 | Having LodePNG be pure ISO C90 makes it more portable. The C and C++ code 1678 | are together in these files but it works both for C and C++ compilers. 1679 | *) 29 dec 2007: (!) changed most integer types to unsigned int + other tweaks 1680 | *) 30 aug 2007: bug fixed which makes this Borland C++ compatible 1681 | *) 09 aug 2007: some VS2005 warnings removed again 1682 | *) 21 jul 2007: deflate code placed in new namespace separate from zlib code 1683 | *) 08 jun 2007: fixed bug with 2- and 4-bit color, and small interlaced images 1684 | *) 04 jun 2007: improved support for Visual Studio 2005: crash with accessing 1685 | invalid std::vector element [0] fixed, and level 3 and 4 warnings removed 1686 | *) 02 jun 2007: made the encoder add a tag with version by default 1687 | *) 27 may 2007: zlib and png code separated (but still in the same file), 1688 | simple encoder/decoder functions added for more simple usage cases 1689 | *) 19 may 2007: minor fixes, some code cleaning, new error added (error 69), 1690 | moved some examples from here to lodepng_examples.cpp 1691 | *) 12 may 2007: palette decoding bug fixed 1692 | *) 24 apr 2007: changed the license from BSD to the zlib license 1693 | *) 11 mar 2007: very simple addition: ability to encode bKGD chunks. 1694 | *) 04 mar 2007: (!) tEXt chunk related fixes, and support for encoding 1695 | palettized PNG images. Plus little interface change with palette and texts. 1696 | *) 03 mar 2007: Made it encode dynamic Huffman shorter with repeat codes. 1697 | Fixed a bug where the end code of a block had length 0 in the Huffman tree. 1698 | *) 26 feb 2007: Huffman compression with dynamic trees (BTYPE 2) now implemented 1699 | and supported by the encoder, resulting in smaller PNGs at the output. 1700 | *) 27 jan 2007: Made the Adler-32 test faster so that a timewaste is gone. 1701 | *) 24 jan 2007: gave encoder an error interface. Added color conversion from any 1702 | greyscale type to 8-bit greyscale with or without alpha. 1703 | *) 21 jan 2007: (!) Totally changed the interface. It allows more color types 1704 | to convert to and is more uniform. See the manual for how it works now. 1705 | *) 07 jan 2007: Some cleanup & fixes, and a few changes over the last days: 1706 | encode/decode custom tEXt chunks, separate classes for zlib & deflate, and 1707 | at last made the decoder give errors for incorrect Adler32 or Crc. 1708 | *) 01 jan 2007: Fixed bug with encoding PNGs with less than 8 bits per channel. 1709 | *) 29 dec 2006: Added support for encoding images without alpha channel, and 1710 | cleaned out code as well as making certain parts faster. 1711 | *) 28 dec 2006: Added "Settings" to the encoder. 1712 | *) 26 dec 2006: The encoder now does LZ77 encoding and produces much smaller files now. 1713 | Removed some code duplication in the decoder. Fixed little bug in an example. 1714 | *) 09 dec 2006: (!) Placed output parameters of public functions as first parameter. 1715 | Fixed a bug of the decoder with 16-bit per color. 1716 | *) 15 okt 2006: Changed documentation structure 1717 | *) 09 okt 2006: Encoder class added. It encodes a valid PNG image from the 1718 | given image buffer, however for now it's not compressed. 1719 | *) 08 sep 2006: (!) Changed to interface with a Decoder class 1720 | *) 30 jul 2006: (!) LodePNG_InfoPng , width and height are now retrieved in different 1721 | way. Renamed decodePNG to decodePNGGeneric. 1722 | *) 29 jul 2006: (!) Changed the interface: image info is now returned as a 1723 | struct of type LodePNG::LodePNG_Info, instead of a vector, which was a bit clumsy. 1724 | *) 28 jul 2006: Cleaned the code and added new error checks. 1725 | Corrected terminology "deflate" into "inflate". 1726 | *) 23 jun 2006: Added SDL example in the documentation in the header, this 1727 | example allows easy debugging by displaying the PNG and its transparency. 1728 | *) 22 jun 2006: (!) Changed way to obtain error value. Added 1729 | loadFile function for convenience. Made decodePNG32 faster. 1730 | *) 21 jun 2006: (!) Changed type of info vector to unsigned. 1731 | Changed position of palette in info vector. Fixed an important bug that 1732 | happened on PNGs with an uncompressed block. 1733 | *) 16 jun 2006: Internally changed unsigned into unsigned where 1734 | needed, and performed some optimizations. 1735 | *) 07 jun 2006: (!) Renamed functions to decodePNG and placed them 1736 | in LodePNG namespace. Changed the order of the parameters. Rewrote the 1737 | documentation in the header. Renamed files to lodepng.cpp and lodepng.h 1738 | *) 22 apr 2006: Optimized and improved some code 1739 | *) 07 sep 2005: (!) Changed to std::vector interface 1740 | *) 12 aug 2005: Initial release (C++, decoder only) 1741 | 1742 | 1743 | 13. contact information 1744 | ----------------------- 1745 | 1746 | Feel free to contact me with suggestions, problems, comments, ... concerning 1747 | LodePNG. If you encounter a PNG image that doesn't work properly with this 1748 | decoder, feel free to send it and I'll use it to find and fix the problem. 1749 | 1750 | My email address is (puzzle the account and domain together with an @ symbol): 1751 | Domain: gmail dot com. 1752 | Account: lode dot vandevenne. 1753 | 1754 | 1755 | Copyright (c) 2005-2016 Lode Vandevenne 1756 | */ 1757 | -------------------------------------------------------------------------------- /main.cpp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/main.cpp -------------------------------------------------------------------------------- /particle.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/particle.png -------------------------------------------------------------------------------- /planet.h: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/planet.h -------------------------------------------------------------------------------- /spawnflash.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/spawnflash.png -------------------------------------------------------------------------------- /test.txt: -------------------------------------------------------------------------------- 1 | 808 -------------------------------------------------------------------------------- /tga.h: -------------------------------------------------------------------------------- 1 | #ifndef TGA_H 2 | #define TGA_H 3 | #include "base.h" 4 | 5 | typedef struct 6 | { 7 | GLubyte *imageData; 8 | GLuint bpp; 9 | GLuint width; 10 | GLuint height; 11 | } TGAImage; 12 | 13 | bool LoadTGA(TGAImage *texture, const char *filename) // Loads A TGA File Into Memory 14 | { 15 | GLubyte TGAheader[12]={0,0,2,0,0,0,0,0,0,0,0,0}; // Uncompressed TGA Header 16 | GLubyte TGAcompare[12]; // Used To Compare TGA Header 17 | GLubyte header[6]; // First 6 Useful Bytes From The Header 18 | GLuint bytesPerPixel; // Holds Number Of Bytes Per Pixel Used In The TGA File 19 | GLuint imageSize; // Used To Store The Image Size When Setting Aside Ram 20 | GLuint temp; // Temporary Variable 21 | GLuint type=GL_RGBA; // Set The Default GL Mode To RBGA (32 BPP) 22 | 23 | FILE *file = fopen(filename, "rb"); // Open The TGA File 24 | 25 | if( file==NULL || // Does File Even Exist? 26 | fread(TGAcompare,1,sizeof(TGAcompare),file)!=sizeof(TGAcompare) || // Are There 12 Bytes To Read? 27 | memcmp(TGAheader,TGAcompare,sizeof(TGAheader))!=0 || // Does The Header Match What We Want? 28 | fread(header,1,sizeof(header),file)!=sizeof(header)) // If So Read Next 6 Header Bytes 29 | { 30 | if (file == NULL) // Did The File Even Exist? *Added Jim Strong* 31 | return false; // Return False 32 | else 33 | { 34 | fclose(file); // If Anything Failed, Close The File 35 | return false; // Return False 36 | } 37 | } 38 | 39 | texture->width = header[1] * 256 + header[0]; // Determine The TGA Width (highbyte*256+lowbyte) 40 | texture->height = header[3] * 256 + header[2]; // Determine The TGA Height (highbyte*256+lowbyte) 41 | 42 | if( texture->width <=0 || // Is The Width Less Than Or Equal To Zero 43 | texture->height <=0 || // Is The Height Less Than Or Equal To Zero 44 | (header[4]!=24 && header[4]!=32)) // Is The TGA 24 or 32 Bit? 45 | { 46 | fclose(file); // If Anything Failed, Close The File 47 | return false; // Return False 48 | } 49 | 50 | texture->bpp = header[4]; // Grab The TGA's Bits Per Pixel (24 or 32) 51 | bytesPerPixel = texture->bpp/8; // Divide By 8 To Get The Bytes Per Pixel 52 | imageSize = texture->width*texture->height*bytesPerPixel; // Calculate The Memory Required For The TGA Data 53 | 54 | texture->imageData=(GLubyte *)malloc(imageSize); // Reserve Memory To Hold The TGA Data 55 | 56 | if( texture->imageData==NULL || // Does The Storage Memory Exist? 57 | fread(texture->imageData, 1, imageSize, file)!=imageSize) // Does The Image Size Match The Memory Reserved? 58 | { 59 | if(texture->imageData!=NULL) // Was Image Data Loaded 60 | free(texture->imageData); // If So, Release The Image Data 61 | 62 | fclose(file); // Close The File 63 | return false; // Return False 64 | } 65 | 66 | for(GLuint i=0; iimageData[i]; // Temporarily Store The Value At Image Data 'i' 69 | texture->imageData[i] = texture->imageData[i + 2]; // Set The 1st Byte To The Value Of The 3rd Byte 70 | texture->imageData[i + 2] = temp; // Set The 3rd Byte To The Value In 'temp' (1st Byte Value) 71 | } 72 | 73 | fclose (file); // Close The File 74 | return true; 75 | 76 | } 77 | #endif -------------------------------------------------------------------------------- /trail.h: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/trail.h -------------------------------------------------------------------------------- /vec3.h: -------------------------------------------------------------------------------- 1 | #ifndef __BMATH_H 2 | #define __BMATH_H 3 | #include "math.h" 4 | 5 | #define EPSILON 1e-6f 6 | #define PI 3.14159265358979323846f 7 | #define DEG2RAD (PI / 180.0f) 8 | #define RAD2DEG (180.0f / PI) 9 | 10 | struct vec3 { 11 | 12 | inline vec3() : x(0), y(0), z(0) { } 13 | inline vec3(float x,float y,float z) : x(x), y(y), z(z) { } 14 | inline vec3(const float *v) : x(v[0]), y(v[1]), z(v[2]) { } 15 | inline vec3(const vec3 &v) : x(v.x), y(v.y), z(v.z) { } 16 | 17 | inline int operator==(const vec3 &v) { return (fabs(x - v.x) < EPSILON && fabs(y - v.y) < EPSILON && fabs(z - v.z) < EPSILON); } 18 | inline int operator!=(const vec3 &v) { return !(*this == v); } 19 | 20 | inline const vec3 operator*(float f) const { return vec3(x * f,y * f,z * f); } 21 | inline const vec3 operator/(float f) const { return vec3(x / f,y / f,z / f); } 22 | inline const vec3 operator+(const vec3 &v) const { return vec3(x + v.x,y + v.y,z + v.z); } 23 | inline const vec3 operator-() const { return vec3(-x,-y,-z); } 24 | inline const vec3 operator-(const vec3 &v) const { return vec3(x - v.x,y - v.y,z - v.z); } 25 | 26 | inline vec3 &operator*=(float f) { return *this = *this * f; } 27 | inline vec3 &operator/=(float f) { return *this = *this / f; } 28 | inline vec3 &operator+=(const vec3 &v) { return *this = *this + v; } 29 | inline vec3 &operator-=(const vec3 &v) { return *this = *this - v; } 30 | 31 | inline float operator*(const vec3 &v) const { return x * v.x + y * v.y + z * v.z; } 32 | 33 | 34 | inline operator float*() { return (float*)&x; } 35 | inline operator const float*() const { return (float*)&x; } 36 | 37 | inline float &operator[](int i) { return ((float*)&x)[i]; } 38 | inline const float operator[](int i) const { return ((float*)&x)[i]; } 39 | 40 | inline float length() const { return sqrt(x * x + y * y + z * z); } 41 | inline float normalize() { 42 | float inv,length = sqrt(x * x + y * y + z * z); 43 | if(length < EPSILON) return 0.0; 44 | inv = 1.0f / length; 45 | x *= inv; 46 | y *= inv; 47 | z *= inv; 48 | return length; 49 | } 50 | inline void cross(const vec3 &v1,const vec3 &v2) { 51 | x = v1.y * v2.z - v1.z * v2.y; 52 | y = v1.z * v2.x - v1.x * v2.z; 53 | z = v1.x * v2.y - v1.y * v2.x; 54 | } 55 | 56 | union { 57 | struct { 58 | float x,y,z; 59 | }; 60 | float v[3]; 61 | }; 62 | }; 63 | 64 | inline vec3 cross(const vec3 &v1,const vec3 &v2) { 65 | vec3 ret; 66 | ret.x = v1.y * v2.z - v1.z * v2.y; 67 | ret.y = v1.z * v2.x - v1.x * v2.z; 68 | ret.z = v1.x * v2.y - v1.y * v2.x; 69 | return ret; 70 | } 71 | #endif -------------------------------------------------------------------------------- /冥王星.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/冥王星.png -------------------------------------------------------------------------------- /土星.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/土星.png -------------------------------------------------------------------------------- /地球.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/地球.png -------------------------------------------------------------------------------- /天王星.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/天王星.png -------------------------------------------------------------------------------- /太阳.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/太阳.png -------------------------------------------------------------------------------- /太阳系1.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/太阳系1.jpg -------------------------------------------------------------------------------- /太阳系2.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/太阳系2.jpg -------------------------------------------------------------------------------- /星空图.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/星空图.png -------------------------------------------------------------------------------- /月亮.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/月亮.png -------------------------------------------------------------------------------- /木星.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/木星.png -------------------------------------------------------------------------------- /水星.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/水星.png -------------------------------------------------------------------------------- /海王星.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/海王星.png -------------------------------------------------------------------------------- /火星.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/火星.png -------------------------------------------------------------------------------- /金星.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jackyblf/SolarSystem-openGL-/218d9b2efacd12f569e30c3182a8a8ce1505cf0f/金星.png --------------------------------------------------------------------------------