├── art ├── CircleGradient.jpeg └── CirclePacking.jpeg ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── .gitignore ├── settings.gradle ├── README.md ├── src └── main │ └── kotlin │ ├── CircleGradient.kt │ └── CirclePacking.kt ├── gradlew.bat ├── gradlew └── LICENSE /art/CircleGradient.jpeg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/floodfx/kotlin-processing/HEAD/art/CircleGradient.jpeg -------------------------------------------------------------------------------- /art/CirclePacking.jpeg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/floodfx/kotlin-processing/HEAD/art/CirclePacking.jpeg -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/floodfx/kotlin-processing/HEAD/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | .classpath 2 | .gradle 3 | .project 4 | .settings 5 | bin/ 6 | build/ 7 | kotlin-processing.iml 8 | kotlin-processing.ipr 9 | kotlin-processing.iws 10 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Fri Jun 23 15:04:00 MDT 2017 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-3.5-bin.zip 7 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | /* 2 | * This settings file was generated by the Gradle 'init' task. 3 | * 4 | * The settings file is used to specify which projects to include in your build. 5 | * In a single project build this file can be empty or even removed. 6 | * 7 | * Detailed information about configuring a multi-project build in Gradle can be found 8 | * in the user guide at https://docs.gradle.org/3.5/userguide/multi_project_builds.html 9 | */ 10 | 11 | /* 12 | // To declare projects as part of a multi-project build use the 'include' method 13 | include 'shared' 14 | include 'api' 15 | include 'services:webservice' 16 | */ 17 | 18 | rootProject.name = 'kotlin-processing' 19 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # kotlin-processing 2 | Playing around with [Kotlin](http://kotlinlang.org) and [Processing](https://processing.org/) to create Generative Art... 3 | 4 | I was inspired by a [blog post](http://www.tylerlhobbs.com/writings/watercolor) by [@thobbs](https://github.com/thobbs) about Generative Art. I read a couple of [other](http://www.tylerlhobbs.com/writings/generative-colors) [posts](http://www.tylerlhobbs.com/writings/circle-packing) and started playing with Kotlin and Processing to see what I could do... 5 | 6 | Had some fun and created something to show. 7 | 8 | (If you want to run the code to create similar art, you need to run from the IDE. I couldn't get Gradle to run Processing from the CLI (but I didn't try hard to figure it out).) 9 | 10 | ## Circle Packing 11 | ![Gen Art 1](art/CirclePacking.jpeg?raw=true "Circle Packing") 12 | 13 | ## Circle Gradient 14 | ![Gen Art 2](art/CircleGradient.jpeg?raw=true "Circle Gradient") 15 | -------------------------------------------------------------------------------- /src/main/kotlin/CircleGradient.kt: -------------------------------------------------------------------------------- 1 | import processing.core.PApplet 2 | import processing.core.PConstants 3 | 4 | class CircleGradient : PApplet() { 5 | 6 | companion object Factory { 7 | fun run() { 8 | var art = CircleGradient() 9 | art.setSize(500, 500) 10 | art.runSketch() 11 | } 12 | } 13 | 14 | override fun setup() { 15 | strokeCap(PConstants.ROUND) 16 | colorMode(PConstants.HSB, 360f, 100f, 100f, 1.0f) 17 | ellipseMode(PConstants.CORNER) 18 | 19 | for (x in 0..500 step 5) { 20 | for (y in 0..500 step 5) { 21 | val hue = rescale(random(x.toFloat() + y.toFloat(), x + y + 100f), 0f, 500f, 130f, 220f) 22 | fill(hue, 90f, 90f) 23 | val size = 5f 24 | ellipse(x.toFloat(), y.toFloat(), size, size) 25 | } 26 | } 27 | 28 | } 29 | 30 | fun rescale(value: Float, oldMin: Float, oldMax: Float, newMin: Float, newMax: Float): Float { 31 | val oldSpread = oldMax - oldMin; 32 | val newSpread = newMax - newMin; 33 | val a = value - oldMin; 34 | val b = newSpread / oldSpread; 35 | val c = a * b; 36 | val d = c + newMin 37 | return d 38 | } 39 | 40 | fun drawLine(h: Float) { 41 | stroke(0f, 255f - h) 42 | line(10f, h, width - 20f, h) 43 | stroke(255f, h) 44 | line(10f, h + 4f, width - 20f, h + 4) 45 | } 46 | 47 | } 48 | 49 | fun main(args: Array) { 50 | CircleGradient.run() 51 | } -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @if "%DEBUG%" == "" @echo off 2 | @rem ########################################################################## 3 | @rem 4 | @rem Gradle startup script for Windows 5 | @rem 6 | @rem ########################################################################## 7 | 8 | @rem Set local scope for the variables with windows NT shell 9 | if "%OS%"=="Windows_NT" setlocal 10 | 11 | set DIRNAME=%~dp0 12 | if "%DIRNAME%" == "" set DIRNAME=. 13 | set APP_BASE_NAME=%~n0 14 | set APP_HOME=%DIRNAME% 15 | 16 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 17 | set DEFAULT_JVM_OPTS= 18 | 19 | @rem Find java.exe 20 | if defined JAVA_HOME goto findJavaFromJavaHome 21 | 22 | set JAVA_EXE=java.exe 23 | %JAVA_EXE% -version >NUL 2>&1 24 | if "%ERRORLEVEL%" == "0" goto init 25 | 26 | echo. 27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 28 | echo. 29 | echo Please set the JAVA_HOME variable in your environment to match the 30 | echo location of your Java installation. 31 | 32 | goto fail 33 | 34 | :findJavaFromJavaHome 35 | set JAVA_HOME=%JAVA_HOME:"=% 36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 37 | 38 | if exist "%JAVA_EXE%" goto init 39 | 40 | echo. 41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 42 | echo. 43 | echo Please set the JAVA_HOME variable in your environment to match the 44 | echo location of your Java installation. 45 | 46 | goto fail 47 | 48 | :init 49 | @rem Get command-line arguments, handling Windows variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | 53 | :win9xME_args 54 | @rem Slurp the command line arguments. 55 | set CMD_LINE_ARGS= 56 | set _SKIP=2 57 | 58 | :win9xME_args_slurp 59 | if "x%~1" == "x" goto execute 60 | 61 | set CMD_LINE_ARGS=%* 62 | 63 | :execute 64 | @rem Setup the command line 65 | 66 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 67 | 68 | @rem Execute Gradle 69 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 70 | 71 | :end 72 | @rem End local scope for the variables with windows NT shell 73 | if "%ERRORLEVEL%"=="0" goto mainEnd 74 | 75 | :fail 76 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 77 | rem the _cmd.exe /c_ return code! 78 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 79 | exit /b 1 80 | 81 | :mainEnd 82 | if "%OS%"=="Windows_NT" endlocal 83 | 84 | :omega 85 | -------------------------------------------------------------------------------- /src/main/kotlin/CirclePacking.kt: -------------------------------------------------------------------------------- 1 | import processing.core.PApplet 2 | import processing.core.PConstants 3 | 4 | data class Circle(val radius: Float, val x: Float, val y: Float, var color: FloatArray = floatArrayOf(0f, 0f, 0f)) 5 | 6 | class CirclePacking : PApplet() { 7 | companion object Factory { 8 | fun run() { 9 | var art = CirclePacking() 10 | art.setSize(500, 500) 11 | art.runSketch() 12 | } 13 | } 14 | 15 | val circleSizeCounts = listOf( 16 | 65 to 7, 17 | 37 to 17, 18 | 20 to 37, 19 | 7 to 167, 20 | 3 to 301 21 | ) 22 | 23 | fun randomXY(xMin: Float, xMax: Float, yMin: Float, yMax: Float): Pair { 24 | return Pair(random(xMin, xMax), random(yMin, yMax)) 25 | } 26 | 27 | override fun setup() { 28 | strokeCap(PConstants.ROUND) 29 | colorMode(PConstants.HSB, 360f, 100f, 100f, 1.0f) 30 | ellipseMode(PConstants.CENTER) 31 | 32 | val allCircles = mutableListOf() 33 | 34 | for (circleSizeCount in circleSizeCounts) { 35 | val circleSize = circleSizeCount.first 36 | val circleCount = circleSizeCount.second 37 | for (i in 1..circleCount) { 38 | // allow up to 100 collisions 39 | for (c in 0..1000) { 40 | // generate random point 41 | // do not allow circles to overlap canvas 42 | // val (x, y) = randomXY(0f+circleSize, 500f-circleSize, 0f+circleSize, 500f-circleSize); 43 | // allow circles overlapping canvas 44 | val (x, y) = randomXY(0f, 500f, 0f, 500f); 45 | val testCircle = Circle(circleSize.toFloat(), x, y) 46 | if (!checkCircleCollision(allCircles, testCircle)) { 47 | // get random color 48 | val color = weightedChoice( 49 | listOf( 50 | floatArrayOf(0f, 0f, random(90f, 100f)) to 0.6f, 51 | floatArrayOf(random(180f, 220f), 50f, 50f) to 0.3f, 52 | floatArrayOf(random(0f, 20f), 80f, 80f) to 0.1f 53 | ) 54 | ) 55 | testCircle.color = color 56 | allCircles.add(testCircle) 57 | break 58 | } 59 | } 60 | } 61 | } 62 | 63 | noStroke() 64 | for (circle in allCircles) { 65 | // println("drawing circle:${circle}") 66 | val circleColor = circle.color 67 | fill(circleColor[0], circleColor[1], circleColor[2]) 68 | ellipse(circle.x, circle.y, circle.radius * 2, circle.radius * 2) 69 | } 70 | 71 | } 72 | 73 | fun checkCircleCollision(allCircles: List, testCircle: Circle): Boolean { 74 | return allCircles.asSequence().any { 75 | val distance = dist(it.x, it.y, testCircle.x, testCircle.y) 76 | distance <= (it.radius + testCircle.radius) 77 | } 78 | } 79 | 80 | fun weightedChoice(colorsAndWeights: List>): FloatArray { 81 | val weightSum = colorsAndWeights.sumBy { (it.second * 100).toInt() } 82 | if (weightSum != 100) throw AssertionError("Weights should sum to 1") 83 | val random = random(0f, 1.0f) 84 | var weightTotal = 0f 85 | for (i in colorsAndWeights) { 86 | if (random >= weightTotal && random <= weightTotal + i.second) { 87 | return i.first 88 | } 89 | weightTotal += i.second; 90 | } 91 | throw Exception("Should have returned a Weighted Choice...") 92 | } 93 | 94 | fun rescale(value: Float, oldMin: Float, oldMax: Float, newMin: Float, newMax: Float): Float { 95 | val oldSpread = oldMax - oldMin; 96 | val newSpread = newMax - newMin; 97 | val a = value - oldMin; 98 | val b = newSpread / oldSpread; 99 | val c = a * b; 100 | val d = c + newMin 101 | return d 102 | } 103 | } 104 | 105 | fun main(args: Array) { 106 | CirclePacking.run() 107 | } 108 | 109 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env sh 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Attempt to set APP_HOME 10 | # Resolve links: $0 may be a link 11 | PRG="$0" 12 | # Need this for relative symlinks. 13 | while [ -h "$PRG" ] ; do 14 | ls=`ls -ld "$PRG"` 15 | link=`expr "$ls" : '.*-> \(.*\)$'` 16 | if expr "$link" : '/.*' > /dev/null; then 17 | PRG="$link" 18 | else 19 | PRG=`dirname "$PRG"`"/$link" 20 | fi 21 | done 22 | SAVED="`pwd`" 23 | cd "`dirname \"$PRG\"`/" >/dev/null 24 | APP_HOME="`pwd -P`" 25 | cd "$SAVED" >/dev/null 26 | 27 | APP_NAME="Gradle" 28 | APP_BASE_NAME=`basename "$0"` 29 | 30 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 31 | DEFAULT_JVM_OPTS="" 32 | 33 | # Use the maximum available, or set MAX_FD != -1 to use that value. 34 | MAX_FD="maximum" 35 | 36 | warn ( ) { 37 | echo "$*" 38 | } 39 | 40 | die ( ) { 41 | echo 42 | echo "$*" 43 | echo 44 | exit 1 45 | } 46 | 47 | # OS specific support (must be 'true' or 'false'). 48 | cygwin=false 49 | msys=false 50 | darwin=false 51 | nonstop=false 52 | case "`uname`" in 53 | CYGWIN* ) 54 | cygwin=true 55 | ;; 56 | Darwin* ) 57 | darwin=true 58 | ;; 59 | MINGW* ) 60 | msys=true 61 | ;; 62 | NONSTOP* ) 63 | nonstop=true 64 | ;; 65 | esac 66 | 67 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 68 | 69 | # Determine the Java command to use to start the JVM. 70 | if [ -n "$JAVA_HOME" ] ; then 71 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 72 | # IBM's JDK on AIX uses strange locations for the executables 73 | JAVACMD="$JAVA_HOME/jre/sh/java" 74 | else 75 | JAVACMD="$JAVA_HOME/bin/java" 76 | fi 77 | if [ ! -x "$JAVACMD" ] ; then 78 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 79 | 80 | Please set the JAVA_HOME variable in your environment to match the 81 | location of your Java installation." 82 | fi 83 | else 84 | JAVACMD="java" 85 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 86 | 87 | Please set the JAVA_HOME variable in your environment to match the 88 | location of your Java installation." 89 | fi 90 | 91 | # Increase the maximum file descriptors if we can. 92 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then 93 | MAX_FD_LIMIT=`ulimit -H -n` 94 | if [ $? -eq 0 ] ; then 95 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 96 | MAX_FD="$MAX_FD_LIMIT" 97 | fi 98 | ulimit -n $MAX_FD 99 | if [ $? -ne 0 ] ; then 100 | warn "Could not set maximum file descriptor limit: $MAX_FD" 101 | fi 102 | else 103 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 104 | fi 105 | fi 106 | 107 | # For Darwin, add options to specify how the application appears in the dock 108 | if $darwin; then 109 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 110 | fi 111 | 112 | # For Cygwin, switch paths to Windows format before running java 113 | if $cygwin ; then 114 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 115 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 116 | JAVACMD=`cygpath --unix "$JAVACMD"` 117 | 118 | # We build the pattern for arguments to be converted via cygpath 119 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 120 | SEP="" 121 | for dir in $ROOTDIRSRAW ; do 122 | ROOTDIRS="$ROOTDIRS$SEP$dir" 123 | SEP="|" 124 | done 125 | OURCYGPATTERN="(^($ROOTDIRS))" 126 | # Add a user-defined pattern to the cygpath arguments 127 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 128 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 129 | fi 130 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 131 | i=0 132 | for arg in "$@" ; do 133 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 134 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 135 | 136 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 137 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 138 | else 139 | eval `echo args$i`="\"$arg\"" 140 | fi 141 | i=$((i+1)) 142 | done 143 | case $i in 144 | (0) set -- ;; 145 | (1) set -- "$args0" ;; 146 | (2) set -- "$args0" "$args1" ;; 147 | (3) set -- "$args0" "$args1" "$args2" ;; 148 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 149 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 150 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 151 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 152 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 153 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 154 | esac 155 | fi 156 | 157 | # Escape application args 158 | save ( ) { 159 | for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done 160 | echo " " 161 | } 162 | APP_ARGS=$(save "$@") 163 | 164 | # Collect all arguments for the java command, following the shell quoting and substitution rules 165 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS" 166 | 167 | # by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong 168 | if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then 169 | cd "$(dirname "$0")" 170 | fi 171 | 172 | exec "$JAVACMD" "$@" 173 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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