├── LICENSE ├── README.md └── fr └── lavache └── anime ├── Animate.java ├── Delta.java ├── DeltaCallExemple.java └── Easing.java /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. By contrast, 15 | the GNU General Public License is intended to guarantee your freedom to 16 | share and change all versions of a program--to make sure it remains free 17 | software for all its users. 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Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # AnimationUtil 2 | Simple AnimationUtil using Easing functions. Can be used anywhere, Hacked-Client, Mods, etc.. 3 | 4 | 5 | Render example > 6 | https://gyazo.com/780b5d84f7bc69f863acdcc7022591fe 7 | 8 | 9 | Exemple of how to use it. 10 | 11 | ```java 12 | 13 | //Variable Initialization 14 | Animate anim = new Animate(); 15 | 16 | //Set Easing Method 17 | anim.setEase(Easing.CUBIC_OUT); 18 | 19 | //Set min Value 20 | anim.setMin(10); 21 | 22 | //Set max Value 23 | anim.setMax(500); 24 | 25 | //Set Animation Duration 26 | anim.setSpeed(200); 27 | 28 | //Set Reversed Animation 29 | anim.setReversed(false); 30 | 31 | //Update Animation 32 | anim.update(); 33 | 34 | //Draw Rectangle, X, Y, WIDTH, HEIGHT, COLOR. 35 | drawRect(anim.getValue(), 10, 20, 20, 0xFFFFFFFF); 36 | 37 | //Reset Animation 38 | if(Mouse.isButtonDown(0)) 39 | anim.reset(); 40 | ``` 41 | 42 | OR 43 | 44 | ```java 45 | //Variable Initialization 46 | Animate anim = new Animate(); 47 | 48 | //Set Easing Method 49 | anim.setEase(Easing.CUBIC_OUT).setMin(10).setMax(500).setSpeed(200).setReversed(false).update(); 50 | 51 | //Draw Rectangle, X, Y, WIDTH, HEIGHT, COLOR. 52 | drawRect(anim.getValue(), 10, 20, 20, 0xFFFFFFFF); 53 | 54 | //Reset Animation 55 | if(Mouse.isButtonDown(0)) 56 | anim.reset(); 57 | ``` 58 | -------------------------------------------------------------------------------- /fr/lavache/anime/Animate.java: -------------------------------------------------------------------------------- 1 | package fr.lavache.anime; 2 | 3 | public class Animate { 4 | 5 | private float value, min, max, speed, time; 6 | private boolean reversed; 7 | private Easing ease; 8 | 9 | public Animate() { 10 | this.ease = Easing.LINEAR; 11 | this.value = 0; 12 | this.min = 0; 13 | this.max = 1; 14 | this.speed = 50; 15 | this.reversed = false; 16 | } 17 | 18 | public void reset() { time = min; } 19 | 20 | public Animate update() { 21 | if (reversed) { 22 | if (time > min) time -= (Delta.DELTATIME * .001F * speed); 23 | } else { 24 | if (time < max) time += (Delta.DELTATIME * .001F * speed); 25 | } 26 | time = clamp(time, min, max); 27 | float easeVal = getEase().ease(time, min, max, max); 28 | this.value = (easeVal > max) ? max : easeVal; 29 | return this; 30 | } 31 | 32 | public Animate setValue(float value) { 33 | this.value = value; 34 | return this; 35 | } 36 | public Animate setMin(float min) { 37 | this.min = min; 38 | return this; 39 | } 40 | 41 | public Animate setMax(float max) { 42 | this.max = max; 43 | return this; 44 | } 45 | 46 | public Animate setSpeed(float speed) { 47 | this.speed = speed; 48 | return this; 49 | } 50 | 51 | public Animate setReversed(boolean reversed) { 52 | this.reversed = reversed; 53 | return this; 54 | } 55 | 56 | public Animate setEase(Easing ease) { 57 | this.ease = ease; 58 | return this; 59 | } 60 | 61 | public float getValue() { return value; } 62 | public float getMin() { return min; } 63 | public float getMax() { return max; } 64 | public float getSpeed() { return speed; } 65 | public boolean isReversed() { return reversed; } 66 | public Easing getEase() { return ease; } 67 | 68 | private float clamp(float num, float min, float max) { return num < min ? min : (num > max ? max : num); } 69 | } 70 | -------------------------------------------------------------------------------- /fr/lavache/anime/Delta.java: -------------------------------------------------------------------------------- 1 | package fr.lavache.anime; 2 | 3 | public class Delta { public static int DELTATIME; } 4 | -------------------------------------------------------------------------------- /fr/lavache/anime/DeltaCallExemple.java: -------------------------------------------------------------------------------- 1 | package fr.lavache.anime; 2 | 3 | import java.io.IOException; 4 | 5 | public class DeltaCallExemple { 6 | 7 | /* GO TO > Minecraft.java */ 8 | 9 | /* Create varriables */ 10 | // => long lastFrame = getTime(); 11 | // => long getTime() { return (Sys.getTime() * 1000) / Sys.getTimerResolution(); } 12 | 13 | private void runGameLoop() throws IOException 14 | { 15 | /*//--Delta--// 16 | => long currentTime = getTime(); 17 | => int deltaTime = (int) (currentTime - lastFrame); 18 | => lastFrame = currentTime; 19 | => Delta.DELTATIME = deltaTime; 20 | //--Delta--// 21 | 22 | 23 | 24 | long i = System.nanoTime(); 25 | this.mcProfiler.startSection("root"); 26 | 27 | if (Display.isCreated() && Display.isCloseRequested()) 28 | { 29 | this.shutdown(); 30 | } 31 | 32 | if (this.isGamePaused && this.theWorld != null) 33 | { 34 | float f = this.timer.renderPartialTicks; 35 | this.timer.updateTimer(); 36 | this.timer.renderPartialTicks = f; 37 | } 38 | else 39 | { 40 | this.timer.updateTimer(); 41 | } 42 | 43 | this.mcProfiler.startSection("scheduledExecutables"); 44 | 45 | synchronized (this.scheduledTasks) 46 | { 47 | while (!this.scheduledTasks.isEmpty()) 48 | { 49 | Util.func_181617_a((FutureTask)this.scheduledTasks.poll(), logger); 50 | } 51 | } 52 | 53 | this.mcProfiler.endSection(); 54 | long l = System.nanoTime(); 55 | this.mcProfiler.startSection("tick"); 56 | 57 | for (int j = 0; j < this.timer.elapsedTicks; ++j) 58 | { 59 | this.runTick(); 60 | } 61 | 62 | this.mcProfiler.endStartSection("preRenderErrors"); 63 | long i1 = System.nanoTime() - l; 64 | this.checkGLError("Pre render"); 65 | this.mcProfiler.endStartSection("sound"); 66 | this.mcSoundHandler.setListener(this.thePlayer, this.timer.renderPartialTicks); 67 | this.mcProfiler.endSection(); 68 | this.mcProfiler.startSection("render"); 69 | GlStateManager.pushMatrix(); 70 | GlStateManager.clear(16640); 71 | this.framebufferMc.bindFramebuffer(true); 72 | this.mcProfiler.startSection("display"); 73 | GlStateManager.enableTexture2D(); 74 | 75 | if (this.thePlayer != null && this.thePlayer.isEntityInsideOpaqueBlock()) 76 | { 77 | this.gameSettings.thirdPersonView = 0; 78 | } 79 | 80 | this.mcProfiler.endSection(); 81 | 82 | if (!this.skipRenderWorld) 83 | { 84 | this.mcProfiler.endStartSection("gameRenderer"); 85 | this.entityRenderer.func_181560_a(this.timer.renderPartialTicks, i); 86 | this.mcProfiler.endSection(); 87 | } 88 | 89 | this.mcProfiler.endSection(); 90 | 91 | if (this.gameSettings.showDebugInfo && this.gameSettings.showDebugProfilerChart && !this.gameSettings.hideGUI) 92 | { 93 | if (!this.mcProfiler.profilingEnabled) 94 | { 95 | this.mcProfiler.clearProfiling(); 96 | } 97 | 98 | this.mcProfiler.profilingEnabled = true; 99 | this.displayDebugInfo(i1); 100 | } 101 | else 102 | { 103 | this.mcProfiler.profilingEnabled = false; 104 | this.prevFrameTime = System.nanoTime(); 105 | } 106 | 107 | this.guiAchievement.updateAchievementWindow(); 108 | this.framebufferMc.unbindFramebuffer(); 109 | GlStateManager.popMatrix(); 110 | GlStateManager.pushMatrix(); 111 | this.framebufferMc.framebufferRender(this.displayWidth, this.displayHeight); 112 | GlStateManager.popMatrix(); 113 | GlStateManager.pushMatrix(); 114 | this.entityRenderer.renderStreamIndicator(this.timer.renderPartialTicks); 115 | GlStateManager.popMatrix(); 116 | this.mcProfiler.startSection("root"); 117 | this.updateDisplay(); 118 | Thread.yield(); 119 | this.mcProfiler.startSection("stream"); 120 | this.mcProfiler.startSection("update"); 121 | this.stream.func_152935_j(); 122 | this.mcProfiler.endStartSection("submit"); 123 | this.stream.func_152922_k(); 124 | this.mcProfiler.endSection(); 125 | this.mcProfiler.endSection(); 126 | this.checkGLError("Post render"); 127 | ++this.fpsCounter; 128 | this.isGamePaused = this.isSingleplayer() && this.currentScreen != null && this.currentScreen.doesGuiPauseGame() && !this.theIntegratedServer.getPublic(); 129 | long k = System.nanoTime(); 130 | this.field_181542_y.func_181747_a(k - this.field_181543_z); 131 | this.field_181543_z = k; 132 | 133 | while (getSystemTime() >= this.debugUpdateTime + 1000L) 134 | { 135 | debugFPS = this.fpsCounter; 136 | this.debug = String.format("%d fps (%d chunk update%s) T: %s%s%s%s%s", new Object[] {Integer.valueOf(debugFPS), Integer.valueOf(RenderChunk.renderChunksUpdated), RenderChunk.renderChunksUpdated != 1 ? "s" : "", (float)this.gameSettings.limitFramerate == GameSettings.Options.FRAMERATE_LIMIT.getValueMax() ? "inf" : Integer.valueOf(this.gameSettings.limitFramerate), this.gameSettings.enableVsync ? " vsync" : "", this.gameSettings.fancyGraphics ? "" : " fast", this.gameSettings.clouds == 0 ? "" : (this.gameSettings.clouds == 1 ? " fast-clouds" : " fancy-clouds"), OpenGlHelper.useVbo() ? " vbo" : ""}); 137 | RenderChunk.renderChunksUpdated = 0; 138 | this.debugUpdateTime += 1000L; 139 | this.fpsCounter = 0; 140 | this.usageSnooper.addMemoryStatsToSnooper(); 141 | 142 | if (!this.usageSnooper.isSnooperRunning()) 143 | { 144 | this.usageSnooper.startSnooper(); 145 | } 146 | } 147 | 148 | if (this.isFramerateLimitBelowMax()) 149 | { 150 | this.mcProfiler.startSection("fpslimit_wait"); 151 | Display.sync(this.getLimitFramerate()); 152 | this.mcProfiler.endSection(); 153 | } 154 | 155 | this.mcProfiler.endSection();*/ 156 | } 157 | 158 | } 159 | -------------------------------------------------------------------------------- /fr/lavache/anime/Easing.java: -------------------------------------------------------------------------------- 1 | package fr.lavache.anime; 2 | 3 | public interface Easing { 4 | 5 | /** 6 | * Simple linear tweening - no easing. 7 | */ 8 | Easing LINEAR = (t, b, c, d) -> c * t / d + b; 9 | /** 10 | * Quadratic easing in - accelerating from zero velocity. 11 | */ 12 | Easing QUAD_IN = (t, b, c, d) -> c * (t /= d) * t + b; 13 | 14 | ///////////// QUADRATIC EASING: t^2 /////////////////// 15 | /** 16 | * Quadratic easing out - decelerating to zero velocity. 17 | */ 18 | Easing QUAD_OUT = (t, b, c, d) -> -c * (t /= d) * (t - 2) + b; 19 | /** 20 | * Quadratic easing in/out - acceleration until halfway, then deceleration 21 | */ 22 | Easing QUAD_IN_OUT = (t, b, c, d) -> { 23 | if ((t /= d / 2) < 1) return c / 2 * t * t + b; 24 | return -c / 2 * ((--t) * (t - 2) - 1) + b; 25 | }; 26 | /** 27 | * Cubic easing in - accelerating from zero velocity. 28 | */ 29 | Easing CUBIC_IN = (t, b, c, d) -> c * (t /= d) * t * t + b; 30 | 31 | 32 | ///////////// CUBIC EASING: t^3 /////////////////////// 33 | /** 34 | * Cubic easing out - decelerating to zero velocity. 35 | */ 36 | Easing CUBIC_OUT = (t, b, c, d) -> c * ((t = t / d - 1) * t * t + 1) + b; 37 | /** 38 | * Cubic easing in/out - acceleration until halfway, then deceleration. 39 | */ 40 | Easing CUBIC_IN_OUT = (t, b, c, d) -> { 41 | if ((t /= d / 2) < 1) return c / 2 * t * t * t + b; 42 | return c / 2 * ((t -= 2) * t * t + 2) + b; 43 | }; 44 | /** 45 | * Quartic easing in - accelerating from zero velocity. 46 | */ 47 | Easing QUARTIC_IN = (t, b, c, d) -> c * (t /= d) * t * t * t + b; 48 | 49 | ///////////// QUARTIC EASING: t^4 ///////////////////// 50 | /** 51 | * Quartic easing out - decelerating to zero velocity. 52 | */ 53 | Easing QUARTIC_OUT = (t, b, c, d) -> -c * ((t = t / d - 1) * t * t * t - 1) + b; 54 | /** 55 | * Quartic easing in/out - acceleration until halfway, then deceleration. 56 | */ 57 | Easing QUARTIC_IN_OUT = (t, b, c, d) -> { 58 | if ((t /= d / 2) < 1) return c / 2 * t * t * t * t + b; 59 | return -c / 2 * ((t -= 2) * t * t * t - 2) + b; 60 | }; 61 | /** 62 | * Quintic easing in - accelerating from zero velocity. 63 | */ 64 | Easing QUINTIC_IN = (t, b, c, d) -> c * (t /= d) * t * t * t * t + b; 65 | 66 | ///////////// QUINTIC EASING: t^5 //////////////////// 67 | /** 68 | * Quintic easing out - decelerating to zero velocity. 69 | */ 70 | Easing QUINTIC_OUT = (t, b, c, d) -> c * ((t = t / d - 1) * t * t * t * t + 1) + b; 71 | /** 72 | * Quintic easing in/out - acceleration until halfway, then deceleration. 73 | */ 74 | Easing QUINTIC_IN_OUT = (t, b, c, d) -> { 75 | if ((t /= d / 2) < 1) return c / 2 * t * t * t * t * t + b; 76 | return c / 2 * ((t -= 2) * t * t * t * t + 2) + b; 77 | }; 78 | /** 79 | * Sinusoidal easing in - accelerating from zero velocity. 80 | */ 81 | Easing SINE_IN = (t, b, c, d) -> -c * (float) Math.cos(t / d * (Math.PI / 2)) + c + b; 82 | 83 | 84 | ///////////// SINUSOIDAL EASING: sin(t) /////////////// 85 | /** 86 | * Sinusoidal easing out - decelerating to zero velocity. 87 | */ 88 | Easing SINE_OUT = (t, b, c, d) -> c * (float) Math.sin(t / d * (Math.PI / 2)) + b; 89 | /** 90 | * Sinusoidal easing in/out - accelerating until halfway, then decelerating. 91 | */ 92 | Easing SINE_IN_OUT = (t, b, c, d) -> -c / 2 * ((float) Math.cos(Math.PI * t / d) - 1) + b; 93 | /** 94 | * Exponential easing in - accelerating from zero velocity. 95 | */ 96 | Easing EXPO_IN = (t, b, c, d) -> (t == 0) ? b : c * (float) Math.pow(2, 10 * (t / d - 1)) + b; 97 | 98 | ///////////// EXPONENTIAL EASING: 2^t ///////////////// 99 | /** 100 | * Exponential easing out - decelerating to zero velocity. 101 | */ 102 | Easing EXPO_OUT = (t, b, c, d) -> (t == d) ? b + c : c * (-(float) Math.pow(2, -10 * t / d) + 1) + b; 103 | /** 104 | * Exponential easing in/out - accelerating until halfway, then decelerating. 105 | */ 106 | Easing EXPO_IN_OUT = (t, b, c, d) -> { 107 | if (t == 0) return b; 108 | if (t == d) return b + c; 109 | if ((t /= d / 2) < 1) return c / 2 * (float) Math.pow(2, 10 * (t - 1)) + b; 110 | return c / 2 * (-(float) Math.pow(2, -10 * --t) + 2) + b; 111 | }; 112 | /** 113 | * Circular easing in - accelerating from zero velocity. 114 | */ 115 | Easing CIRC_IN = (t, b, c, d) -> -c * ((float) Math.sqrt(1 - (t /= d) * t) - 1) + b; 116 | 117 | 118 | /////////// CIRCULAR EASING: sqrt(1-t^2) ////////////// 119 | /** 120 | * Circular easing out - decelerating to zero velocity. 121 | */ 122 | Easing CIRC_OUT = (t, b, c, d) -> c * (float) Math.sqrt(1 - (t = t / d - 1) * t) + b; 123 | /** 124 | * Circular easing in/out - acceleration until halfway, then deceleration. 125 | */ 126 | Easing CIRC_IN_OUT = (t, b, c, d) -> { 127 | if ((t /= d / 2) < 1) return -c / 2 * ((float) Math.sqrt(1 - t * t) - 1) + b; 128 | return c / 2 * ((float) Math.sqrt(1 - (t -= 2) * t) + 1) + b; 129 | }; 130 | /** 131 | * An EasingIn instance using the default values. 132 | */ 133 | Easing.Elastic ELASTIC_IN = new Easing.ElasticIn(); 134 | 135 | /////////// ELASTIC EASING: exponentially decaying sine wave ////////////// 136 | /** 137 | * An ElasticOut instance using the default values. 138 | */ 139 | Easing.Elastic ELASTIC_OUT = new Easing.ElasticOut(); 140 | /** 141 | * An ElasticInOut instance using the default values. 142 | */ 143 | Easing.Elastic ELASTIC_IN_OUT = new Easing.ElasticInOut(); 144 | /** 145 | * An instance of BackIn using the default overshoot. 146 | */ 147 | Easing.Back BACK_IN = new Easing.BackIn(); 148 | /** 149 | * An instance of BackOut using the default overshoot. 150 | */ 151 | Easing.Back BACK_OUT = new Easing.BackOut(); 152 | /** 153 | * An instance of BackInOut using the default overshoot. 154 | */ 155 | Easing.Back BACK_IN_OUT = new Easing.BackInOut(); 156 | /** 157 | * Bounce easing out. 158 | */ 159 | Easing BOUNCE_OUT = (t, b, c, d) -> { 160 | if ((t /= d) < (1 / 2.75f)) { 161 | return c * (7.5625f * t * t) + b; 162 | } else if (t < (2 / 2.75f)) { 163 | return c * (7.5625f * (t -= (1.5f / 2.75f)) * t + .75f) + b; 164 | } else if (t < (2.5f / 2.75f)) { 165 | return c * (7.5625f * (t -= (2.25f / 2.75f)) * t + .9375f) + b; 166 | } else { 167 | return c * (7.5625f * (t -= (2.625f / 2.75f)) * t + .984375f) + b; 168 | } 169 | }; 170 | /** 171 | * Bounce easing in. 172 | */ 173 | Easing BOUNCE_IN = (t, b, c, d) -> c - Easing.BOUNCE_OUT.ease(d - t, 0, c, d) + b; 174 | 175 | /////////// BACK EASING: overshooting cubic easing: (s+1)*t^3 - s*t^2 ////////////// 176 | /** 177 | * Bounce easing in/out. 178 | */ 179 | Easing BOUNCE_IN_OUT = (t, b, c, d) -> { 180 | if (t < d / 2) return Easing.BOUNCE_IN.ease(t * 2, 0, c, d) * .5f + b; 181 | return Easing.BOUNCE_OUT.ease(t * 2 - d, 0, c, d) * .5f + c * .5f + b; 182 | }; 183 | 184 | /** 185 | * The basic function for easing. 186 | * 187 | * @param t the time (either frames or in seconds/milliseconds) 188 | * @param b the beginning value 189 | * @param c the value changed 190 | * @param d the duration time 191 | * @return the eased value 192 | */ 193 | float ease(float t, float b, float c, float d); 194 | 195 | /** 196 | * A base class for elastic easings. 197 | */ 198 | abstract class Elastic implements Easing { 199 | private float amplitude; 200 | private float period; 201 | 202 | /** 203 | * Creates a new Elastic easing with the specified settings. 204 | * 205 | * @param amplitude the amplitude for the elastic function 206 | * @param period the period for the elastic function 207 | */ 208 | public Elastic(float amplitude, float period) { 209 | this.amplitude = amplitude; 210 | this.period = period; 211 | } 212 | 213 | /** 214 | * Creates a new Elastic easing with default settings (-1f, 0f). 215 | */ 216 | public Elastic() { 217 | this(-1f, 0f); 218 | } 219 | 220 | /** 221 | * Returns the period. 222 | * 223 | * @return the period for this easing 224 | */ 225 | public float getPeriod() { 226 | return period; 227 | } 228 | 229 | /** 230 | * Sets the period to the given value. 231 | * 232 | * @param period the new period 233 | */ 234 | public void setPeriod(float period) { 235 | this.period = period; 236 | } 237 | 238 | /** 239 | * Returns the amplitude. 240 | * 241 | * @return the amplitude for this easing 242 | */ 243 | public float getAmplitude() { 244 | return amplitude; 245 | } 246 | 247 | /** 248 | * Sets the amplitude to the given value. 249 | * 250 | * @param amplitude the new amplitude 251 | */ 252 | public void setAmplitude(float amplitude) { 253 | this.amplitude = amplitude; 254 | } 255 | } 256 | 257 | /** 258 | * An Elastic easing used for ElasticIn functions. 259 | */ 260 | class ElasticIn extends Elastic { 261 | public ElasticIn(float amplitude, float period) { 262 | super(amplitude, period); 263 | } 264 | 265 | public ElasticIn() { 266 | super(); 267 | } 268 | 269 | public float ease(float t, float b, float c, float d) { 270 | float a = getAmplitude(); 271 | float p = getPeriod(); 272 | if (t == 0) return b; 273 | if ((t /= d) == 1) return b + c; 274 | if (p == 0) p = d * .3f; 275 | float s = 0; 276 | if (a < Math.abs(c)) { 277 | a = c; 278 | s = p / 4; 279 | } else s = p / (float) (2 * Math.PI) * (float) Math.asin(c / a); 280 | return -(a * (float) Math.pow(2, 10 * (t -= 1)) * (float) Math.sin((t * d - s) * (2 * Math.PI) / p)) + b; 281 | } 282 | } 283 | 284 | /** 285 | * An Elastic easing used for ElasticOut functions. 286 | */ 287 | class ElasticOut extends Elastic { 288 | public ElasticOut(float amplitude, float period) { 289 | super(amplitude, period); 290 | } 291 | 292 | public ElasticOut() { 293 | super(); 294 | } 295 | 296 | public float ease(float t, float b, float c, float d) { 297 | float a = getAmplitude(); 298 | float p = getPeriod(); 299 | if (t == 0) return b; 300 | if ((t /= d) == 1) return b + c; 301 | if (p == 0) p = d * .3f; 302 | float s = 0; 303 | if (a < Math.abs(c)) { 304 | a = c; 305 | s = p / 4; 306 | } else s = p / (float) (2 * Math.PI) * (float) Math.asin(c / a); 307 | return a * (float) Math.pow(2, -10 * t) * (float) Math.sin((t * d - s) * (2 * Math.PI) / p) + c + b; 308 | } 309 | } 310 | 311 | /** 312 | * An Elastic easing used for ElasticInOut functions. 313 | */ 314 | class ElasticInOut extends Elastic { 315 | public ElasticInOut(float amplitude, float period) { 316 | super(amplitude, period); 317 | } 318 | 319 | public ElasticInOut() { 320 | super(); 321 | } 322 | 323 | public float ease(float t, float b, float c, float d) { 324 | float a = getAmplitude(); 325 | float p = getPeriod(); 326 | if (t == 0) return b; 327 | if ((t /= d / 2) == 2) return b + c; 328 | if (p == 0) p = d * (.3f * 1.5f); 329 | float s = 0; 330 | if (a < Math.abs(c)) { 331 | a = c; 332 | s = p / 4f; 333 | } else s = p / (float) (2 * Math.PI) * (float) Math.asin(c / a); 334 | if (t < 1) 335 | return -.5f * (a * (float) Math.pow(2, 10 * (t -= 1)) * (float) Math.sin((t * d - s) * (2 * Math.PI) / p)) + b; 336 | return a * (float) Math.pow(2, -10 * (t -= 1)) * (float) Math.sin((t * d - s) * (2 * Math.PI) / p) * .5f + c + b; 337 | } 338 | } 339 | 340 | /** 341 | * A base class for Back easings. 342 | */ 343 | abstract class Back implements Easing { 344 | /** 345 | * The default overshoot is 10% (1.70158). 346 | */ 347 | public static final float DEFAULT_OVERSHOOT = 1.70158f; 348 | 349 | private float overshoot; 350 | 351 | /** 352 | * Creates a new Back instance with the default overshoot (1.70158). 353 | */ 354 | public Back() { 355 | this(DEFAULT_OVERSHOOT); 356 | } 357 | 358 | /** 359 | * Creates a new Back instance with the specified overshoot. 360 | * 361 | * @param overshoot the amount to overshoot by -- higher number 362 | * means more overshoot and an overshoot of 0 results in 363 | * cubic easing with no overshoot 364 | */ 365 | public Back(float overshoot) { 366 | this.overshoot = overshoot; 367 | } 368 | 369 | /** 370 | * Returns the overshoot for this easing. 371 | * 372 | * @return this easing's overshoot 373 | */ 374 | public float getOvershoot() { 375 | return overshoot; 376 | } 377 | 378 | /** 379 | * Sets the overshoot to the given value. 380 | * 381 | * @param overshoot the new overshoot 382 | */ 383 | public void setOvershoot(float overshoot) { 384 | this.overshoot = overshoot; 385 | } 386 | } 387 | 388 | /////////// BOUNCE EASING: exponentially decaying parabolic bounce ////////////// 389 | 390 | /** 391 | * Back easing in - backtracking slightly, then reversing direction and moving to target. 392 | */ 393 | class BackIn extends Back { 394 | public BackIn() { 395 | super(); 396 | } 397 | 398 | public BackIn(float overshoot) { 399 | super(overshoot); 400 | } 401 | 402 | public float ease(float t, float b, float c, float d) { 403 | float s = getOvershoot(); 404 | return c * (t /= d) * t * ((s + 1) * t - s) + b; 405 | } 406 | } 407 | 408 | /** 409 | * Back easing out - moving towards target, overshooting it slightly, then reversing and coming back to target. 410 | */ 411 | class BackOut extends Back { 412 | public BackOut() { 413 | super(); 414 | } 415 | 416 | public BackOut(float overshoot) { 417 | super(overshoot); 418 | } 419 | 420 | public float ease(float t, float b, float c, float d) { 421 | float s = getOvershoot(); 422 | return c * ((t = t / d - 1) * t * ((s + 1) * t + s) + 1) + b; 423 | } 424 | } 425 | 426 | /** 427 | * Back easing in/out - backtracking slightly, then reversing direction and moving to target, 428 | * then overshooting target, reversing, and finally coming back to target. 429 | */ 430 | class BackInOut extends Back { 431 | public BackInOut() { 432 | super(); 433 | } 434 | 435 | public BackInOut(float overshoot) { 436 | super(overshoot); 437 | } 438 | 439 | public float ease(float t, float b, float c, float d) { 440 | float s = getOvershoot(); 441 | if ((t /= d / 2) < 1) return c / 2 * (t * t * (((s *= (1.525)) + 1) * t - s)) + b; 442 | return c / 2 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2) + b; 443 | } 444 | } 445 | } 446 | --------------------------------------------------------------------------------