forked from processing-js/processing-js
/
processing.js
3298 lines (2640 loc) · 107 KB
/
processing.js
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/*
P R O C E S S I N G - 0 . 0 . J S
a port of the Processing visualization language
License : MIT
Developer : John Resig: http://ejohn.org
Web Site : http://processingjs.org
Java Version : http://processing.org
Github Repo. : http://github.com/jeresig/processing-js
Bug Tracking : http://processing-js.lighthouseapp.com
Mozilla POW! : http://wiki.Mozilla.org/Education/Projects/ProcessingForTheWeb
Maintained by : Seneca: http://zenit.senecac.on.ca/wiki/index.php/Processing.js
Hyper-Metrix: http://hyper-metrix.com/#Processing
*/
(function(){
// Attach Processing to the window
this.Processing = function Processing( aElement, aCode ){
// Get the DOM element if string was passed
if( typeof aElement == "string" ){
aElement = document.getElementById( aElement );
}
// Build an Processing functions and env. vars into 'p'
var p = buildProcessing( aElement );
// Send aCode Processing syntax to be converted to JavaScript
if( aCode ){ p.init( aCode ); }
return p;
};
// IE Unfriendly AJAX Method
var ajax=function( url ){
var AJAX;
if( AJAX = new XMLHttpRequest() ){
AJAX.open( "GET", url, false );
AJAX.send( null );
return AJAX.responseText;
}else{
return false;
}
};
// Automatic Initialization Method
var init = function(){
var canvas = document.getElementsByTagName( 'canvas' ),
datasrc = undefined;
for( var i = 0; l = i < canvas.length; i++ ){
if( datasrc = canvas[ i ].getAttribute( 'datasrc' ) ){
Processing( canvas[ i ], ajax( datasrc ) );
}
}
};
addEventListener( 'DOMContentLoaded', function(){ init(); }, false );
// Parse Processing (Java-like) syntax to JavaScript syntax with Regex
var parse = Processing.parse = function parse( aCode, p ){
// Remove end-of-line comments
aCode = aCode.replace( /\/\/ .*\n/g, "\n" );
// Weird parsing errors with %
aCode = aCode.replace( /([^\s])%([^\s])/g, "$1 % $2" );
// Since frameRate() and frameRate are different things,
// we need to differentiate them somehow. So when we parse
// the Processing.js source, replace frameRate so it isn't
// confused with frameRate().
aCode = aCode.replace(/(\s*=\s*|\(*\s*)frameRate(\s*\)+?|\s*;)/,"$1p.FRAME_RATE$2");
// Simple convert a function-like thing to function
aCode = aCode.replace( /(?:static )?(\w+(?:\[\])* )(\w+)\s*(\([^\)]*\)\s*{)/g, function( all, type, name, args ){
if ( name == "if" || name == "for" || name == "while" ) {
return all;
} else {
return "Processing." + name + " = function " + name + args;
}
});
// Attach import() to p{} bypassing JS command, allowing for extrernal library loading
aCode = aCode.replace( /import \(|import\(/g, "p.Import(" );
// Force .length() to be .length
aCode = aCode.replace( /\.length\(\)/g, ".length" );
// foo( int foo, float bar )
aCode = aCode.replace( /([\(,]\s*)(\w+)((?:\[\])+| )\s*(\w+\s*[\),])/g, "$1$4" );
aCode = aCode.replace( /([\(,]\s*)(\w+)((?:\[\])+| )\s*(\w+\s*[\),])/g, "$1$4" );
// float[] foo = new float[5];
aCode = aCode.replace( /new (\w+)((?:\[([^\]]*)\])+)/g, function( all, name, args ){
return "new ArrayList(" + args.slice(1,-1).split("][").join(", ") + ")";
});
// What does this do?
aCode = aCode.replace( /(?:static )?\w+\[\]\s*(\w+)\[?\]?\s*=\s*{.*?};/g, function( all ){
return all.replace( /{/g, "[").replace(/}/g, "]" );
});
// int|float foo;
var intFloat = /(\n\s*(?:int|float)(?!\[\])*(?:\s*|[^\(;]*?,\s*))(\w+)\s*(,|;)/i;
while( intFloat.test(aCode) ){
aCode = aCode.replace( new RegExp( intFloat ), function( all, type, name, sep ){
return type + " " + name + " = 0" + sep;
});
}
// float foo = 5;
aCode = aCode.replace( /(?:static )?(\w+)((?:\[\])+| ) *(\w+)\[?\]?(\s*[=,;])/g, function( all, type, arr, name, sep ){
if ( type == "return" )
return all;
else
return "var " + name + sep;
});
// Fix Array[] foo = {...} to [...]
aCode = aCode.replace( /=\s*{((.|\s)*?)};/g, function(all,data){
return "= [" + data.replace(/{/g, "[").replace(/}/g, "]") + "]";
});
// super() is a reserved word
aCode = aCode.replace( /super\(/g, "superMethod(" );
var classes = [ "int", "float", "boolean", "string" ];
function ClassReplace( all, name, extend, vars, last ){
classes.push( name );
var static = "";
vars = vars.replace( /final\s+var\s+(\w+\s*=\s*.*?;)/g, function( all, set ){
static += " " + name + "." + set;
return "";
});
// Move arguments up from constructor and wrap contents with
// a with(this), and unwrap constructor
return "function " + name + "() {with(this){\n " +
( extend ? "var __self=this;function superMethod(){extendClass(__self,arguments," + extend + ");}\n" : "" ) +
// Replace var foo = 0; with this.foo = 0;
// and force var foo; to become this.foo = null;
vars
.replace( /\s*,\s*/g, ";\n this." )
.replace( /\b(var |final |public )+\s*/g, "this." )
.replace( /\b(var |final |public )+\s*/g, "this." )
.replace( /this.(\w+);/g, "this.$1 = null;" ) +
( extend ? "extendClass(this, " + extend + ");\n" : "" ) +
"<CLASS " + name + " " + static + ">" + ( typeof last == "string" ? last : name + "(" );
}
var matchClasses = /(?:public |abstract |static )*class (\w+)\s*(?:extends\s*(\w+)\s*)?{\s*((?:.|\n)*?)\b\1\s*\(/g;
var matchNoCon = /(?:public |abstract |static )*class (\w+)\s*(?:extends\s*(\w+)\s*)?{\s*((?:.|\n)*?)(Processing)/g;
aCode = aCode.replace( matchClasses, ClassReplace );
aCode = aCode.replace( matchNoCon, ClassReplace );
var matchClass = /<CLASS (\w+) (.*?)>/, m;
while ( ( m = aCode.match( matchClass ) ) ){
var left = RegExp.leftContext,
allRest = RegExp.rightContext,
rest = nextBrace( allRest ),
className = m[ 1 ],
staticVars = m[ 2 ] || "";
allRest = allRest.slice( rest.length + 1 );
rest = rest.replace( new RegExp("\\b" + className + "\\(([^\\)]*?)\\)\\s*{", "g"), function( all, args ){
args = args.split( /,\s*?/ );
if( args[ 0 ].match( /^\s*$/ ) ){
args.shift();
}
var fn = "if ( arguments.length == " + args.length + " ) {\n";
for ( var i = 0; i < args.length; i++ ) {
fn += " var " + args[ i ] + " = arguments["+ i +"];\n";
}
return fn;
});
// Fix class method names
// this.collide = function() { ... }
// and add closing } for with(this) ...
rest = rest.replace( /(?:public )?Processing.\w+ = function (\w+)\((.*?)\)/g, function( all, name, args ){
return "ADDMETHOD(this, '" + name + "', function(" + args + ")";
});
var matchMethod = /ADDMETHOD([\s\S]*?{)/, mc;
var methods = "";
while ( ( mc = rest.match( matchMethod ) ) ){
var prev = RegExp.leftContext,
allNext = RegExp.rightContext,
next = nextBrace(allNext);
methods += "addMethod" + mc[ 1 ] + next + "});";
rest = prev + allNext.slice( next.length + 1 );
}
rest = methods + rest;
aCode = left + rest + "\n}}" + staticVars + allRest;
}
// Do some tidying up, where necessary
aCode = aCode.replace( /Processing.\w+ = function addMethod/g, "addMethod" );
function nextBrace( right ) {
var rest = right,
position = 0,
leftCount = 1,
rightCount = 0;
while( leftCount != rightCount ) {
var nextLeft = rest.indexOf( "{" ),
nextRight = rest.indexOf( "}" );
if( nextLeft < nextRight && nextLeft != - 1 ) {
leftCount++;
rest = rest.slice( nextLeft + 1 );
position += nextLeft + 1;
}else{
rightCount++;
rest = rest.slice( nextRight + 1 );
position += nextRight + 1;
}
}
return right.slice( 0, position - 1 );
}
// Check if 3D context is invoked -- this is not the best way to do this.
if ( aCode.match(/size\((?:.+),(?:.+),\s*OPENGL\);/)){
p.use3DContext = true;
}
// Handle (int) Casting
aCode = aCode.replace( /\(int\)/g, "0|" );
// Remove Casting
aCode = aCode.replace( new RegExp("\\((" + classes.join("|") + ")(\\[\\])?\\)", "g"), "" );
// Force numbers to exist //
//aCode = aCode.replace(/([^.])(\w+)\s*\+=/g, "$1$2 = ($2||0) +");
//! // Force characters-as-bytes to work --> Ping: Andor
aCode = aCode.replace(/('[a-zA-Z0-9]')/g, "$1.charCodeAt(0)");
// Convert #aaaaaa into color
aCode = aCode.replace(/#([a-f0-9]{6})/ig, function(m, hex){
var num = toNumbers(hex);
return "DefaultColor(" + num[0] + "," + num[1] + "," + num[2] + ")";
});
// Convert 3.0f to just 3.0
aCode = aCode.replace( /(\d+)f/g, "$1" );
function toNumbers( str ){
var ret = [];
str.replace( /(..)/g, function( str ){
ret.push( parseInt( str, 16 ) );
});
return ret;
}
return aCode;
};
// Attach Processing functions to 'p'
function buildProcessing( curElement ){
// Create the 'p' object
var p = {};
// Set Processing defaults / environment variables
p.name = 'Processing.js Instance';
p.PI = Math.PI;
p.TWO_PI = 2 * p.PI;
p.HALF_PI = p.PI / 2;
p.P3D = 3;
p.CORNER = 0;
p.RADIUS = 1;
p.CENTER_RADIUS = 1;
p.CENTER = 2;
p.POLYGON = 2;
p.QUADS = 5;
p.TRIANGLES = 6;
p.POINTS = 7;
p.LINES = 8;
p.TRIANGLE_STRIP = 9;
p.TRIANGLE_FAN = 4;
p.QUAD_STRIP = 3;
p.CORNERS = 10;
p.CLOSE = true;
p.RGB = 1;
p.HSB = 2;
p.OPENGL = 'OPENGL';
p.FRAME_RATE = 0;
p.focused = true;
p.ARROW = 'default';
p.CROSS = 'crosshair';
p.HAND = 'pointer';
p.MOVE = 'move';
p.TEXT = 'text';
p.WAIT = 'wait';
p.NOCURSOR = "url('data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw=='), auto";
p.ALPHA_MASK = 0xff000000;
p.RED_MASK = 0x00ff0000;
p.GREEN_MASK = 0x0000ff00;
p.BLUE_MASK = 0x000000ff;
p.REPLACE = 0;
p.BLEND = 1 << 0;
p.ADD = 1 << 1;
p.SUBTRACT = 1 << 2;
p.LIGHTEST = 1 << 3;
p.DARKEST = 1 << 4;
p.DIFFERENCE = 1 << 5;
p.EXCLUSION = 1 << 6;
p.MULTIPLY = 1 << 7;
p.SCREEN = 1 << 8;
p.OVERLAY = 1 << 9;
p.HARD_LIGHT = 1 << 10;
p.SOFT_LIGHT = 1 << 11;
p.DODGE = 1 << 12;
p.BURN = 1 << 13;
p.PRECISIONB = 15; // fixed point precision is limited to 15 bits!!
p.PRECISIONF = 1 << p.PRECISIONB;
p.PREC_MAXVAL = p.PRECISIONF-1;
p.PREC_ALPHA_SHIFT = 24-p.PRECISIONB;
p.PREC_RED_SHIFT = 16-p.PRECISIONB;
// KeyCode Table
p.CENTER = 88888880;
p.CODED = 88888888;
p.UP = 88888870;
p.RIGHT = 88888871;
p.DOWN = 88888872;
p.LEFT = 88888869;
//! // Description required...
p.codedKeys = [ 69, 70, 71, 72 ];
p.use3DContext = false; // default '2d' canvas context
// "Private" variables used to maintain state
var curContext,
online = true,
doFill = true,
doStroke = true,
loopStarted = false,
hasBackground = false,
doLoop = true,
looping = 0,
curRectMode = p.CORNER,
curEllipseMode = p.CENTER,
inSetup = false,
inDraw = false,
curBackground = "rgba( 204, 204, 204, 1 )",
curFrameRate = 1000,
curCursor = p.ARROW,
oldCursor = document.body.style.cursor,
curMsPerFrame = 1,
curShape = p.POLYGON,
curShapeCount = 0,
curvePoints = [],
curTightness = 0,
opacityRange = 255,
redRange = 255,
greenRange = 255,
blueRange = 255,
pathOpen = false,
mousePressed = false,
keyPressed = false,
curColorMode = p.RGB;
curTint = - 1,
curTextSize = 12,
curTextFont = "Arial",
getLoaded = false,
start = ( new Date ).getTime(),
timeSinceLastFPS = start,
framesSinceLastFPS = 0;
var firstX,
firstY,
secondX,
secondY,
prevX,
prevY;
// Stores states for pushStyle() and popStyle().
var styleArray = new Array();
// Store a line for println(), print() handline
p.ln = "";
// Glyph path storage for textFonts
p.glyphTable = {};
// Global vars for tracking mouse position
p.pmouseX = 0;
p.pmouseY = 0;
p.mouseX = 0;
p.mouseY = 0;
p.mouseButton = 0;
p.mouseDown = false;
// Undefined event handlers to be replaced by user when needed
p.mouseClicked = undefined;
p.mouseDragged = undefined;
p.mouseMoved = undefined;
p.mousePressed = undefined;
p.mouseReleased = undefined;
p.keyPressed = undefined;
p.keyReleased = undefined;
p.draw = undefined;
p.setup = undefined;
// The height/width of the canvas
p.width = curElement.width - 0;
p.height = curElement.height - 0;
// The current animation frame
p.frameCount = 0;
////////////////////////////////////////////////////////////////////////////
// Array handling
////////////////////////////////////////////////////////////////////////////
p.split = function( str, delim ){
return str.split( delim );
}
p.splitTokens = function( str, tokens ){
if( arguments.length == 1 ){
tokens = "\n\t\r\f ";
}
tokens = "[" + tokens + "]";
var ary = new Array();
var index = 0;
var pos = str.search( tokens );
while( pos >= 0 ){
if (pos == 0){
str = str.substring( 1 );
}else{
ary[ index ] = str.substring( 0, pos );
index++;
str = str.substring( pos );
}
pos = str.search( tokens );
}
if( str.length > 0 ){
ary[ index ] = str;
}
if( ary.length == 0 ){
ary = undefined;
}
return ary;
}
p.append = function( array, element ){
array[ array.length ] = element;
return array;
}
p.concat = function concat( array1, array2 ){
return array1.concat( array2 );
}
p.splice = function( array, value, index ){
if(array.length == 0 && value.length == 0){
return array;
};
if( value instanceof Array ){
for( var i = 0, j = index; i < value.length; j++, i++ ){
array.splice( j, 0, value[ i ] );
}
}else{
array.splice( index, 0, value );
};
return array;
};
p.subset = function( array, offset, length ){
if(arguments.length == 2){
return p.subset( array, offset, array.length - offset );
}else if( arguments.length == 3 ){
return array.slice( offset, offset + length );
}
};
p.concat = function concat( array1, array2 ){ return array1.concat( array2 ) };
p.join = function join( array, seperator ){ return array.join( seperator ) };
p.shorten = function( ary ){
var newary = new Array();
// copy array into new array
var len = ary.length;
for( var i = 0; i < len; i++ ){
newary[ i ] = ary[ i ];
}
newary.pop();
return newary;
}
p.expand = function( ary, newSize ){
var newary = new Array();
var len = ary.length
for( var i = 0; i < len; i++ ){
newary[ i ] = ary[ i ];
}
if( arguments.length == 1 ){
// double size of array
newary.length *= 2;
}else if( arguments.length == 2 ){
// size is newSize
newary.length = newSize;
}
return newary;
}
p.ArrayList = function ArrayList( size, size2, size3 ){
var array = new Array( 0 | size );
if( size2 ){
for( var i = 0; i < size; i++ ){
array[ i ] = [];
for( var j = 0; j < size2; j++ ){
var a = array[ i ][ j ] = size3 ? new Array( size3 ) : 0 ;
for( var k = 0; k < size3; k++ ){ a[ k ] = 0; }
}
}
}else{
for( var i = 0; i < size; i++ ){ array[ i ] = 0; }
}
array.get = function( i ){ return this[ i ]; };
array.add = function( item ){ return this.push( item ); };
array.size = function( ){ return this.length; };
array.clear = function( ){ this.length = 0; };
array.remove = function( i ){ return this.splice( i, 1 ); };
array.isEmpty = function( ){ return !this.length; };
array.clone = function( ){
var a = new ArrayList( size );
for( var i = 0; i < size; i++ ){
a[ i ] = this[ i ];
}
return a;
};
return array;
};
p.reverse = function( array ){ return array.reverse() };
////////////////////////////////////////////////////////////////////////////
// Color functions
////////////////////////////////////////////////////////////////////////////
// convert rgba color strings to integer
p.rgbaToInt = function(color){
var rgbaAry = /\(([^\)]+)\)/.exec(color).slice(1,2)[0].split(',');
return (rgbaAry[3] << 24) | (rgbaAry[0] << 16) | (rgbaAry[1] << 8) | (rgbaAry[2]);
}
// helper functions for internal blending modes
p.mix = function(a, b, f) {
return a + (((b - a) * f) >> 8);
}
p.peg = function(n) {
return (n < 0) ? 0 : ((n > 255) ? 255 : n);
}
// blending modes
p.modes = {
replace: function(a, b){
return p.rgbaToInt(b);
},
blend: function(a, b){
var c1 = p.rgbaToInt(a);
var c2 = p.rgbaToInt(b);
var f = (c2 & p.ALPHA_MASK) >>> 24;
return (Math.min(((c1 & p.ALPHA_MASK) >>> 24) + f, 0xff) << 24 |
p.mix(c1 & p.RED_MASK, c2 & p.RED_MASK, f) & p.RED_MASK |
p.mix(c1 & p.GREEN_MASK, c2 & p.GREEN_MASK, f) & p.GREEN_MASK |
p.mix(c1 & p.BLUE_MASK, c2 & p.BLUE_MASK, f));
},
add: function(a, b){
var c1 = p.rgbaToInt(a);
var c2 = p.rgbaToInt(b);
var f = (c2 & p.ALPHA_MASK) >>> 24;
return (Math.min(((c1 & p.ALPHA_MASK) >>> 24) + f, 0xff) << 24 |
Math.min(((c1 & p.RED_MASK) +
((c2 & p.RED_MASK) >> 8) * f), p.RED_MASK) & p.RED_MASK |
Math.min(((c1 & p.GREEN_MASK) +
((c2 & p.GREEN_MASK) >> 8) * f), p.GREEN_MASK) & p.GREEN_MASK |
Math.min((c1 & p.BLUE_MASK) +
(((c2 & p.BLUE_MASK) * f) >> 8), p.BLUE_MASK));
},
subtract: function(a, b){
var c1 = p.rgbaToInt(a);
var c2 = p.rgbaToInt(b);
var f = (c2 & p.ALPHA_MASK) >>> 24;
return (Math.min(((c1 & p.ALPHA_MASK) >>> 24) + f, 0xff) << 24 |
Math.max(((c1 & p.RED_MASK) - ((c2 & p.RED_MASK) >> 8) * f),
p.GREEN_MASK) & p.RED_MASK |
Math.max(((c1 & p.GREEN_MASK) - ((c2 & p.GREEN_MASK) >> 8) * f),
p.BLUE_MASK) & p.GREEN_MASK |
Math.max((c1 & p.BLUE_MASK) - (((c2 & p.BLUE_MASK) * f) >> 8), 0));
},
lightest: function(a, b){
var c1 = p.rgbaToInt(a);
var c2 = p.rgbaToInt(b);
var f = (c2 & p.ALPHA_MASK) >>> 24;
return (Math.min(((c1 & p.ALPHA_MASK) >>> 24) + f, 0xff) << 24 |
Math.max(c1 & p.RED_MASK, ((c2 & p.RED_MASK) >> 8) * f) & p.RED_MASK |
Math.max(c1 & p.GREEN_MASK, ((c2 & p.GREEN_MASK) >> 8) * f) & p.GREEN_MASK |
Math.max(c1 & p.BLUE_MASK, ((c2 & p.BLUE_MASK) * f) >> 8));
},
darkest: function(a, b){
var c1 = p.rgbaToInt(a);
var c2 = p.rgbaToInt(b);
var f = (c2 & p.ALPHA_MASK) >>> 24;
return (Math.min(((c1 & p.ALPHA_MASK) >>> 24) + f, 0xff) << 24 |
p.mix(c1 & p.RED_MASK,
Math.min(c1 & p.RED_MASK, ((c2 & p.RED_MASK) >> 8) * f), f) & p.RED_MASK |
p.mix(c1 & p.GREEN_MASK,
Math.min(c1 & p.GREEN_MASK, ((c2 & p.GREEN_MASK) >> 8) * f), f) & p.GREEN_MASK |
p.mix(c1 & p.BLUE_MASK,
Math.min(c1 & p.BLUE_MASK, ((c2 & p.BLUE_MASK) * f) >> 8), f));
},
difference: function(a, b){
var c1 = p.rgbaToInt(a);
var c2 = p.rgbaToInt(b);
var f = (c2 & p.ALPHA_MASK) >>> 24;
var ar = (c1 & p.RED_MASK) >> 16;
var ag = (c1 & p.GREEN_MASK) >> 8;
var ab = (c1 & p.BLUE_MASK);
var br = (c2 & p.RED_MASK) >> 16;
var bg = (c2 & p.GREEN_MASK) >> 8;
var bb = (c2 & p.BLUE_MASK);
// formula:
var cr = (ar > br) ? (ar-br) : (br-ar);
var cg = (ag > bg) ? (ag-bg) : (bg-ag);
var cb = (ab > bb) ? (ab-bb) : (bb-ab);
// alpha blend (this portion will always be the same)
return (Math.min(((c1 & p.ALPHA_MASK) >>> 24) + f, 0xff) << 24 |
(p.peg(ar + (((cr - ar) * f) >> 8)) << 16) |
(p.peg(ag + (((cg - ag) * f) >> 8)) << 8) |
(p.peg(ab + (((cb - ab) * f) >> 8)) ) );
},
exclusion: function(a, b){
var c1 = p.rgbaToInt(a);
var c2 = p.rgbaToInt(b);
var f = (c2 & p.ALPHA_MASK) >>> 24;
var ar = (c1 & p.RED_MASK) >> 16;
var ag = (c1 & p.GREEN_MASK) >> 8;
var ab = (c1 & p.BLUE_MASK);
var br = (c2 & p.RED_MASK) >> 16;
var bg = (c2 & p.GREEN_MASK) >> 8;
var bb = (c2 & p.BLUE_MASK);
// formula:
var cr = ar + br - ((ar * br) >> 7);
var cg = ag + bg - ((ag * bg) >> 7);
var cb = ab + bb - ((ab * bb) >> 7);
// alpha blend (this portion will always be the same)
return (Math.min(((c1 & p.ALPHA_MASK) >>> 24) + f, 0xff) << 24 |
(p.peg(ar + (((cr - ar) * f) >> 8)) << 16) |
(p.peg(ag + (((cg - ag) * f) >> 8)) << 8) |
(p.peg(ab + (((cb - ab) * f) >> 8)) ) );
},
multiply: function(a, b){
var c1 = p.rgbaToInt(a);
var c2 = p.rgbaToInt(b);
var f = (c2 & p.ALPHA_MASK) >>> 24;
var ar = (c1 & p.RED_MASK) >> 16;
var ag = (c1 & p.GREEN_MASK) >> 8;
var ab = (c1 & p.BLUE_MASK);
var br = (c2 & p.RED_MASK) >> 16;
var bg = (c2 & p.GREEN_MASK) >> 8;
var bb = (c2 & p.BLUE_MASK);
// formula:
var cr = (ar * br) >> 8;
var cg = (ag * bg) >> 8;
var cb = (ab * bb) >> 8;
// alpha blend (this portion will always be the same)
return (Math.min(((c1 & p.ALPHA_MASK) >>> 24) + f, 0xff) << 24 |
(p.peg(ar + (((cr - ar) * f) >> 8)) << 16) |
(p.peg(ag + (((cg - ag) * f) >> 8)) << 8) |
(p.peg(ab + (((cb - ab) * f) >> 8)) ) );
},
screen: function(a, b){
var c1 = p.rgbaToInt(a);
var c2 = p.rgbaToInt(b);
var f = (c2 & p.ALPHA_MASK) >>> 24;
var ar = (c1 & p.RED_MASK) >> 16;
var ag = (c1 & p.GREEN_MASK) >> 8;
var ab = (c1 & p.BLUE_MASK);
var br = (c2 & p.RED_MASK) >> 16;
var bg = (c2 & p.GREEN_MASK) >> 8;
var bb = (c2 & p.BLUE_MASK);
// formula:
var cr = 255 - (((255 - ar) * (255 - br)) >> 8);
var cg = 255 - (((255 - ag) * (255 - bg)) >> 8);
var cb = 255 - (((255 - ab) * (255 - bb)) >> 8);
// alpha blend (this portion will always be the same)
return (Math.min(((c1 & p.ALPHA_MASK) >>> 24) + f, 0xff) << 24 |
(p.peg(ar + (((cr - ar) * f) >> 8)) << 16) |
(p.peg(ag + (((cg - ag) * f) >> 8)) << 8) |
(p.peg(ab + (((cb - ab) * f) >> 8)) ) );
},
hard_light: function(a, b){
var c1 = p.rgbaToInt(a);
var c2 = p.rgbaToInt(b);
var f = (c2 & p.ALPHA_MASK) >>> 24;
var ar = (c1 & p.RED_MASK) >> 16;
var ag = (c1 & p.GREEN_MASK) >> 8;
var ab = (c1 & p.BLUE_MASK);
var br = (c2 & p.RED_MASK) >> 16;
var bg = (c2 & p.GREEN_MASK) >> 8;
var bb = (c2 & p.BLUE_MASK);
// formula:
var cr = (br < 128) ? ((ar*br)>>7) : (255-(((255-ar)*(255-br))>>7));
var cg = (bg < 128) ? ((ag*bg)>>7) : (255-(((255-ag)*(255-bg))>>7));
var cb = (bb < 128) ? ((ab*bb)>>7) : (255-(((255-ab)*(255-bb))>>7));
// alpha blend (this portion will always be the same)
return (Math.min(((c1 & p.ALPHA_MASK) >>> 24) + f, 0xff) << 24 |
(p.peg(ar + (((cr - ar) * f) >> 8)) << 16) |
(p.peg(ag + (((cg - ag) * f) >> 8)) << 8) |
(p.peg(ab + (((cb - ab) * f) >> 8)) ) );
},
soft_light: function(a, b){
var c1 = p.rgbaToInt(a);
var c2 = p.rgbaToInt(b);
var f = (c2 & p.ALPHA_MASK) >>> 24;
var ar = (c1 & p.RED_MASK) >> 16;
var ag = (c1 & p.GREEN_MASK) >> 8;
var ab = (c1 & p.BLUE_MASK);
var br = (c2 & p.RED_MASK) >> 16;
var bg = (c2 & p.GREEN_MASK) >> 8;
var bb = (c2 & p.BLUE_MASK);
// formula:
var cr = ((ar*br)>>7) + ((ar*ar)>>8) - ((ar*ar*br)>>15);
var cg = ((ag*bg)>>7) + ((ag*ag)>>8) - ((ag*ag*bg)>>15);
var cb = ((ab*bb)>>7) + ((ab*ab)>>8) - ((ab*ab*bb)>>15);
// alpha blend (this portion will always be the same)
return (Math.min(((c1 & p.ALPHA_MASK) >>> 24) + f, 0xff) << 24 |
(p.peg(ar + (((cr - ar) * f) >> 8)) << 16) |
(p.peg(ag + (((cg - ag) * f) >> 8)) << 8) |
(p.peg(ab + (((cb - ab) * f) >> 8)) ) );
},
overlay: function(a, b){
var c1 = p.rgbaToInt(a);
var c2 = p.rgbaToInt(b);
var f = (c2 & p.ALPHA_MASK) >>> 24;
var ar = (c1 & p.RED_MASK) >> 16;
var ag = (c1 & p.GREEN_MASK) >> 8;
var ab = (c1 & p.BLUE_MASK);
var br = (c2 & p.RED_MASK) >> 16;
var bg = (c2 & p.GREEN_MASK) >> 8;
var bb = (c2 & p.BLUE_MASK);
// formula:
var cr = (ar < 128) ? ((ar*br)>>7) : (255-(((255-ar)*(255-br))>>7));
var cg = (ag < 128) ? ((ag*bg)>>7) : (255-(((255-ag)*(255-bg))>>7));
var cb = (ab < 128) ? ((ab*bb)>>7) : (255-(((255-ab)*(255-bb))>>7));
// alpha blend (this portion will always be the same)
return (Math.min(((c1 & p.ALPHA_MASK) >>> 24) + f, 0xff) << 24 |
(p.peg(ar + (((cr - ar) * f) >> 8)) << 16) |
(p.peg(ag + (((cg - ag) * f) >> 8)) << 8) |
(p.peg(ab + (((cb - ab) * f) >> 8)) ) );
},
dodge: function(a, b){
var c1 = p.rgbaToInt(a);
var c2 = p.rgbaToInt(b);
var f = (c2 & p.ALPHA_MASK) >>> 24;
var ar = (c1 & p.RED_MASK) >> 16;
var ag = (c1 & p.GREEN_MASK) >> 8;
var ab = (c1 & p.BLUE_MASK);
var br = (c2 & p.RED_MASK) >> 16;
var bg = (c2 & p.GREEN_MASK) >> 8;
var bb = (c2 & p.BLUE_MASK);
// formula:
var cr = (br==255) ? 255 : p.peg((ar << 8) / (255 - br)); // division requires pre-peg()-ing
var cg = (bg==255) ? 255 : p.peg((ag << 8) / (255 - bg)); // "
var cb = (bb==255) ? 255 : p.peg((ab << 8) / (255 - bb)); // "
// alpha blend (this portion will always be the same)
return (Math.min(((c1 & p.ALPHA_MASK) >>> 24) + f, 0xff) << 24 |
(p.peg(ar + (((cr - ar) * f) >> 8)) << 16) |
(p.peg(ag + (((cg - ag) * f) >> 8)) << 8) |
(p.peg(ab + (((cb - ab) * f) >> 8)) ) );
},
burn: function(a, b){
var c1 = p.rgbaToInt(a);
var c2 = p.rgbaToInt(b);
var f = (c2 & p.ALPHA_MASK) >>> 24;
var ar = (c1 & p.RED_MASK) >> 16;
var ag = (c1 & p.GREEN_MASK) >> 8;
var ab = (c1 & p.BLUE_MASK);
var br = (c2 & p.RED_MASK) >> 16;
var bg = (c2 & p.GREEN_MASK) >> 8;
var bb = (c2 & p.BLUE_MASK);
// formula:
var cr = (br==0) ? 0 : 255 - p.peg(((255 - ar) << 8) / br); // division requires pre-peg()-ing
var cg = (bg==0) ? 0 : 255 - p.peg(((255 - ag) << 8) / bg); // "
var cb = (bb==0) ? 0 : 255 - p.peg(((255 - ab) << 8) / bb); // "
// alpha blend (this portion will always be the same)
return (Math.min(((c1 & p.ALPHA_MASK) >>> 24) + f, 0xff) << 24 |
(p.peg(ar + (((cr - ar) * f) >> 8)) << 16) |
(p.peg(ag + (((cg - ag) * f) >> 8)) << 8) |
(p.peg(ab + (((cb - ab) * f) >> 8)) ) );
}
};
// In case I ever need to do HSV conversion:
// http://srufaculty.sru.edu/david.dailey/javascript/js/5rml.js
p.color = function color( aValue1, aValue2, aValue3, aValue4 ) {
var aColor = "";
if ( arguments.length == 3 ) {
aColor = p.color( aValue1, aValue2, aValue3, opacityRange );
} else if ( arguments.length == 4 ) {
var a = aValue4 / opacityRange;
a = isNaN(a) ? 1 : a;
if ( curColorMode == p.HSB ) {
var rgb = HSBtoRGB(aValue1, aValue2, aValue3);
var r = rgb[0], g = rgb[1], b = rgb[2];
} else {
var r = getColor(aValue1, redRange);
var g = getColor(aValue2, greenRange);
var b = getColor(aValue3, blueRange);
}
aColor = "rgba(" + r + "," + g + "," + b + "," + aValue4 + ")"; // a=aValue4
} else if ( typeof aValue1 == "string" ) {
aColor = aValue1;
if ( arguments.length == 2 ) {
var c = aColor.split(",");
c[3] = (aValue2 / opacityRange) + ")";
aColor = c.join(",");
}
} else if ( arguments.length == 2 ) {
aColor = p.color( aValue1, aValue1, aValue1, aValue2 );
} else if ( typeof aValue1 == "number" && aValue1 < 256 && aValue1 >= 0) {
aColor = p.color( aValue1, aValue1, aValue1, opacityRange );
} else if ( typeof aValue1 == "number" ) {
var intcolor = 0;
if( aValue1 < 0 ){
intcolor = 4294967296 - ( aValue1 * -1 );
}else{
intcolor = aValue1;
}
var ac = Math.floor((intcolor % 4294967296) / 16777216);
var rc = Math.floor((intcolor % 16777216) / 65536);
var gc = Math.floor((intcolor % 65536) / 256);
var bc = intcolor % 256;
aColor = p.color( rc, gc, bc, ac );
} else {
aColor = p.color( redRange, greenRange, blueRange, opacityRange );
}
// HSB conversion function from Mootools, MIT Licensed
function HSBtoRGB(h, s, b) {
h = (h / redRange) * 360;
s = (s / greenRange) * 100;
b = (b / blueRange) * 100;
var br = Math.round(b / 100 * 255);
if (s == 0){
return [br, br, br];
} else {
var hue = h % 360;
var f = hue % 60;
var p = Math.round((b * (100 - s)) / 10000 * 255);
var q = Math.round((b * (6000 - s * f)) / 600000 * 255);
var t = Math.round((b * (6000 - s * (60 - f))) / 600000 * 255);
switch (Math.floor(hue / 60)){
case 0: return [br, t, p];
case 1: return [q, br, p];
case 2: return [p, br, t];
case 3: return [p, q, br];
case 4: return [t, p, br];
case 5: return [br, p, q];
}
}
}
function getColor( aValue, range ) {
return Math.round(255 * (aValue / range));
}
return aColor;
}
p.red = function( aColor ){ return parseInt( verifyChannel( aColor ).slice( 5 ) ); };
p.green = function( aColor ){ return parseInt( verifyChannel( aColor ).split( "," )[ 1 ] ); };
p.blue = function( aColor ){ return parseInt( verifyChannel( aColor ).split( "," )[ 2 ] ); };
p.alpha = function( aColor ){ return parseInt( parseFloat( verifyChannel( aColor ).split( "," )[ 3 ] ) * 255 ); };
function verifyChannel( aColor ){
if( aColor.constructor == Array ){
return aColor;
} else {
return p.color( aColor );
}
}
p.lerpColor = function lerpColor( c1, c2, amt ){
// Get RGBA values for Color 1 to floats
var colors1 = p.color( c1 ).split( "," );
var r1 = parseInt( colors1[ 0 ].split( "(" )[ 1 ] );
var g1 = parseInt( colors1[ 1 ] );
var b1 = parseInt( colors1[ 2 ] );
var a1 = parseFloat( colors1[ 3 ].split( ")" )[ 0 ] );
// Get RGBA values for Color 2 to floats
var colors2 = p.color( c2 ).split( "," );
var r2 = parseInt( colors2[ 0 ].split( "(" )[ 1 ] );
var g2 = parseInt( colors2[ 1 ] );
var b2 = parseInt( colors2[ 2 ] );
var a2 = parseFloat( colors2[ 3 ].split( ")" )[ 0 ] );
// Return lerp value for each channel, INT for color, Float for Alpha-range
var r = parseInt( p.lerp( r1, r2, amt ) );
var g = parseInt( p.lerp( g1, g2, amt ) );
var b = parseInt( p.lerp( b1, b2, amt ) );
var a = parseFloat( p.lerp( a1, a2, amt ) );
return aColor = "rgba("+ r +","+ g +","+ b +","+ a +")";
}