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== code blocks Code Blocks ==
Here is a list of code blocks I have written for the processing.js project
0.3 - wip: blendColor(), blend(), copy(), filter()
=== CONSTANTS ADDED === 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;=== blendColor() === p.blendColor = function(c1, c2, mode){ var color = 0; switch(mode){ case p.REPLACE : color = p.modes.replace(c1, c2); break; case p.BLEND : color = p.modes.blend(c1, c2); break; case p.ADD : color = p.modes.add(c1, c2); break; case p.SUBTRACT : color = p.modes.subtract(c1, c2); break; case p.LIGHTEST : color = p.modes.lightest(c1, c2); break; case p.DARKEST : color = p.modes.darkest(c1, c2); break; case p.DIFFERENCE : color = p.modes.difference(c1, c2); break; case p.EXCLUSION : color = p.modes.exclusion(c1, c2); break; case p.MULTIPLY : color = p.modes.multiply(c1, c2); break; case p.SCREEN : color = p.modes.screen(c1, c2); break; case p.HARD_LIGHT : color = p.modes.hard_light(c1, c2); break; case p.SOFT_LIGHT : color = p.modes.soft_light(c1, c2); break; case p.OVERLAY : color = p.modes.overlay(c1, c2); break; case p.DODGE : color = p.modes.dodge(c1, c2); break; case p.BURN : color = p.modes.burn(c1, c2); break; } return color; }=== helper functions === // helper functions for internal blending modes // 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]); } 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 === // 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)) ) ); } };=== screen === p.screen = { width:screen.width, height:screen.height }
=== log() ===
p.log = function( num ) {
p.map = function( value, low1, high1, low2, high2 ){
return (((value-low1)/(high1-low1))*(high2-low2))+low2;
}
=== nfc() ===
