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picasso_new.js
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picasso_new.js
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function x64Add(m, n) {
m = [m[0] >>> 16, m[0] & 0xffff, m[1] >>> 16, m[1] & 0xffff];
n = [n[0] >>> 16, n[0] & 0xffff, n[1] >>> 16, n[1] & 0xffff];
var o = [0, 0, 0, 0];
o[3] += m[3] + n[3];
o[2] += o[3] >>> 16;
o[3] &= 0xffff;
o[2] += m[2] + n[2];
o[1] += o[2] >>> 16;
o[2] &= 0xffff;
o[1] += m[1] + n[1];
o[0] += o[1] >>> 16;
o[1] &= 0xffff;
o[0] += m[0] + n[0];
o[0] &= 0xffff;
return [(o[0] << 16) | o[1], (o[2] << 16) | o[3]];
}
function x64Multiply(m, n) {
m = [m[0] >>> 16, m[0] & 0xffff, m[1] >>> 16, m[1] & 0xffff];
n = [n[0] >>> 16, n[0] & 0xffff, n[1] >>> 16, n[1] & 0xffff];
var o = [0, 0, 0, 0];
o[3] += m[3] * n[3];
o[2] += o[3] >>> 16;
o[3] &= 0xffff;
o[2] += m[2] * n[3];
o[1] += o[2] >>> 16;
o[2] &= 0xffff;
o[2] += m[3] * n[2];
o[1] += o[2] >>> 16;
o[2] &= 0xffff;
o[1] += m[1] * n[3];
o[0] += o[1] >>> 16;
o[1] &= 0xffff;
o[1] += m[2] * n[2];
o[0] += o[1] >>> 16;
o[1] &= 0xffff;
o[1] += m[3] * n[1];
o[0] += o[1] >>> 16;
o[1] &= 0xffff;
o[0] += (m[0] * n[3]) + (m[1] * n[2]) + (m[2] * n[1]) + (m[3] * n[0]);
o[0] &= 0xffff;
return [(o[0] << 16) | o[1], (o[2] << 16) | o[3]];
}
function x64Rotl(m, n) {
n %= 64;
if (n === 32) {
return [m[1], m[0]]
} else if (n < 32) {
return [(m[0] << n) | (m[1] >>> (32 - n)), (m[1] << n) | (m[0] >>> (32 - n))]
} else {
n -= 32;
return [(m[1] << n) | (m[0] >>> (32 - n)), (m[0] << n) | (m[1] >>> (32 - n))]
}
}
function x64LeftShift(m, n) {
n %= 64;
if (n === 0) {
return m
} else if (n < 32) {
return [(m[0] << n) | (m[1] >>> (32 - n)), m[1] << n]
} else {
return [m[1] << (n - 32), 0]
}
}
function x64Xor(m, n) {
return [m[0] ^ n[0], m[1] ^ n[1]];
}
function x64Fmix(h) {
h = x64Xor(h, [0, h[0] >>> 1]);
h = x64Multiply(h, [0xff51afd7, 0xed558ccd]);
h = x64Xor(h, [0, h[0] >>> 1]);
h = x64Multiply(h, [0xc4ceb9fe, 0x1a85ec53]);
h = x64Xor(h, [0, h[0] >>> 1]);
return h
}
function x64hash128(key, seed) {
key = key || '';
seed = seed || 0;
var remainder = key.length % 16;
var bytes = key.length - remainder;
var h1 = [0, seed];
var h2 = [0, seed];
var k1 = [0, 0];
var k2 = [0, 0];
var c1 = [0x87c37b91, 0x114253d5];
var c2 = [0x4cf5ad43, 0x2745937f];
for (var i = 0; i < bytes; i = i + 16) {
k1 = [((key.charCodeAt(i + 4) & 0xff)) | ((key.charCodeAt(i + 5) & 0xff) << 8) | ((key.charCodeAt(i + 6) & 0xff) << 16) | ((key.charCodeAt(i + 7) & 0xff) << 24), ((key.charCodeAt(i) & 0xff)) | ((key.charCodeAt(i + 1) & 0xff) << 8) | ((key.charCodeAt(i + 2) & 0xff) << 16) | ((key.charCodeAt(i + 3) & 0xff) << 24)];
k2 = [((key.charCodeAt(i + 12) & 0xff)) | ((key.charCodeAt(i + 13) & 0xff) << 8) | ((key.charCodeAt(i + 14) & 0xff) << 16) | ((key.charCodeAt(i + 15) & 0xff) << 24), ((key.charCodeAt(i + 8) & 0xff)) | ((key.charCodeAt(i + 9) & 0xff) << 8) | ((key.charCodeAt(i + 10) & 0xff) << 16) | ((key.charCodeAt(i + 11) & 0xff) << 24)];
k1 = x64Multiply(k1, c1);
k1 = x64Rotl(k1, 31);
k1 = x64Multiply(k1, c2);
h1 = x64Xor(h1, k1);
h1 = x64Rotl(h1, 27);
h1 = x64Add(h1, h2);
h1 = x64Add(x64Multiply(h1, [0, 5]), [0, 0x52dce729]);
k2 = x64Multiply(k2, c2);
k2 = x64Rotl(k2, 33);
k2 = x64Multiply(k2, c1);
h2 = x64Xor(h2, k2);
h2 = x64Rotl(h2, 31);
h2 = x64Add(h2, h1);
h2 = x64Add(x64Multiply(h2, [0, 5]), [0, 0x38495ab5]);
}
k1 = [0, 0];
k2 = [0, 0];
switch (remainder) {
case 15:
k2 = x64Xor(k2, x64LeftShift([0, key.charCodeAt(i + 14)], 48));
case 14:
k2 = x64Xor(k2, x64LeftShift([0, key.charCodeAt(i + 13)], 40));
case 13:
k2 = x64Xor(k2, x64LeftShift([0, key.charCodeAt(i + 12)], 32));
case 12:
k2 = x64Xor(k2, x64LeftShift([0, key.charCodeAt(i + 11)], 24));
case 11:
k2 = x64Xor(k2, x64LeftShift([0, key.charCodeAt(i + 10)], 16));
case 10:
k2 = x64Xor(k2, x64LeftShift([0, key.charCodeAt(i + 9)], 8));
case 9:
k2 = x64Xor(k2, [0, key.charCodeAt(i + 8)]);
k2 = x64Multiply(k2, c2);
k2 = x64Rotl(k2, 33);
k2 = x64Multiply(k2, c1);
h2 = x64Xor(h2, k2);
case 8:
k1 = x64Xor(k1, x64LeftShift([0, key.charCodeAt(i + 7)], 56));
case 7:
k1 = x64Xor(k1, x64LeftShift([0, key.charCodeAt(i + 6)], 48));
case 6:
k1 = x64Xor(k1, x64LeftShift([0, key.charCodeAt(i + 5)], 40));
case 5:
k1 = x64Xor(k1, x64LeftShift([0, key.charCodeAt(i + 4)], 32));
case 4:
k1 = x64Xor(k1, x64LeftShift([0, key.charCodeAt(i + 3)], 24));
case 3:
k1 = x64Xor(k1, x64LeftShift([0, key.charCodeAt(i + 2)], 16));
case 2:
k1 = x64Xor(k1, x64LeftShift([0, key.charCodeAt(i + 1)], 8));
case 1:
k1 = x64Xor(k1, [0, key.charCodeAt(i)]);
k1 = x64Multiply(k1, c1);
k1 = x64Rotl(k1, 31);
k1 = x64Multiply(k1, c2);
h1 = x64Xor(h1, k1);
}
h1 = x64Xor(h1, [0, key.length]);
h2 = x64Xor(h2, [0, key.length]);
h1 = x64Add(h1, h2);
h2 = x64Add(h2, h1);
h1 = x64Fmix(h1);
h2 = x64Fmix(h2);
h1 = x64Add(h1, h2);
h2 = x64Add(h2, h1);
return ('00000000' + (h1[0] >>> 0).toString(16)).slice(-8) + ('00000000' + (h1[1] >>> 0).toString(16)).slice(-8) + ('00000000' + (h2[0] >>> 0).toString(16)).slice(-8) + ('00000000' + (h2[1] >>> 0).toString(16)).slice(-8)
}
function picassoCanvas(roundNumber, seed, params) {
const {area, offsetParameter, multiplier, fontSizeFactor, maxShadowBlur} = params;
class Prng {
constructor(seed) {
this.currentNumber = seed % offsetParameter;
if (this.currentNumber <= 0) {
this.currentNumber += offsetParameter
}
}
getNext() {
this.currentNumber = multiplier * this.currentNumber % offsetParameter;
console.log(`Next random value: ${this.currentNumber}`);
return this.currentNumber;
}
}
function adaptRandomNumberToContext(randomNumber, maxBound, floatAllowed) {
randomNumber = (randomNumber - 1) / offsetParameter;
if (floatAllowed) {
return randomNumber * maxBound;
}
const result = Math.floor(randomNumber * maxBound);
console.log(`Adapted random value: ${result}`);
return result;
}
function addRandomCanvasGradient(prng, context, area) {
const canvasGradient = context.createRadialGradient(
adaptRandomNumberToContext(prng.getNext(), area.width),
adaptRandomNumberToContext(prng.getNext(), area.height),
adaptRandomNumberToContext(prng.getNext(), area.width),
adaptRandomNumberToContext(prng.getNext(), area.width),
adaptRandomNumberToContext(prng.getNext(), area.height),
adaptRandomNumberToContext(prng.getNext(), area.width)
);
canvasGradient.addColorStop(0, colors[adaptRandomNumberToContext(prng.getNext(), colors.length)]);
canvasGradient.addColorStop(1, colors[adaptRandomNumberToContext(prng.getNext(), colors.length)]);
context.fillStyle = canvasGradient
}
function generateRandomWord(prng, wordLength) {
const minAscii = 65;
const maxAscii = 126;
const wordGenerated = [];
for (let i = 0; i < wordLength; i++) {
const asciiCode = minAscii + (prng.getNext() % (maxAscii - minAscii));
wordGenerated.push(String.fromCharCode(asciiCode));
}
return wordGenerated.join('');
}
if (!window.CanvasRenderingContext2D) {
return 'unknown';
}
const colors = ['#FF6633', '#FFB399', '#FF33FF', '#FFFF99', '#00B3E6',
'#E6B333', '#3366E6', '#999966', '#99FF99', '#B34D4D',
'#80B300', '#809900', '#E6B3B3', '#6680B3', '#66991A',
'#FF99E6', '#CCFF1A', '#FF1A66', '#E6331A', '#33FFCC',
'#66994D', '#B366CC', '#4D8000', '#B33300', '#CC80CC',
'#66664D', '#991AFF', '#E666FF', '#4DB3FF', '#1AB399',
'#E666B3', '#33991A', '#CC9999', '#B3B31A', '#00E680',
'#4D8066', '#809980', '#E6FF80', '#1AFF33', '#999933',
'#FF3380', '#CCCC00', '#66E64D', '#4D80CC', '#9900B3',
'#E64D66', '#4DB380', '#FF4D4D', '#99E6E6', '#6666FF'];
const primitives = [
function arc (prng, context, area) {
context.beginPath();
context.arc(
adaptRandomNumberToContext(prng.getNext(), area.width),
adaptRandomNumberToContext(prng.getNext(), area.height),
adaptRandomNumberToContext(prng.getNext(), Math.min(area.width, area.height)),
adaptRandomNumberToContext(prng.getNext(), 2 * Math.PI, true),
adaptRandomNumberToContext(prng.getNext(), 2 * Math.PI, true)
);
context.stroke()
},
function text (prng, context, area) {
const wordLength = Math.max(1, adaptRandomNumberToContext(prng.getNext(), 5));
const textToStroke = generateRandomWord(prng, wordLength);
//const textToStroke = "XYU";
context.font = `${area.height / fontSizeFactor}px aafakefontaa`;
context.strokeText(
textToStroke,
adaptRandomNumberToContext(prng.getNext(), area.width),
adaptRandomNumberToContext(prng.getNext(), area.height),
adaptRandomNumberToContext(prng.getNext(), area.width)
)
},
function bezierCurve (prng, context, area) {
context.beginPath();
context.moveTo(
adaptRandomNumberToContext(prng.getNext(), area.width),
adaptRandomNumberToContext(prng.getNext(), area.height)
);
context.bezierCurveTo(
adaptRandomNumberToContext(prng.getNext(), area.width),
adaptRandomNumberToContext(prng.getNext(), area.height),
adaptRandomNumberToContext(prng.getNext(), area.width),
adaptRandomNumberToContext(prng.getNext(), area.height),
adaptRandomNumberToContext(prng.getNext(), area.width),
adaptRandomNumberToContext(prng.getNext(), area.height)
);
context.stroke()
},
function quadraticCurve(prng, context, area) {
context.beginPath();
context.moveTo(
adaptRandomNumberToContext(prng.getNext(), area.width),
adaptRandomNumberToContext(prng.getNext(), area.height)
);
context.quadraticCurveTo(
adaptRandomNumberToContext(prng.getNext(), area.width),
adaptRandomNumberToContext(prng.getNext(), area.height),
adaptRandomNumberToContext(prng.getNext(), area.width),
adaptRandomNumberToContext(prng.getNext(), area.height)
);
context.stroke()
},
function ellipse(prng, context, area) {
context.beginPath();
context.ellipse(
adaptRandomNumberToContext(prng.getNext(), area.width),
adaptRandomNumberToContext(prng.getNext(), area.height),
adaptRandomNumberToContext(prng.getNext(), Math.floor(area.width/2)),
adaptRandomNumberToContext(prng.getNext(), Math.floor(area.height/2)),
adaptRandomNumberToContext(prng.getNext(), 2 * Math.PI, true),
adaptRandomNumberToContext(prng.getNext(), 2 * Math.PI, true),
adaptRandomNumberToContext(prng.getNext(), 2 * Math.PI, true)
);
context.stroke()
}
];
try {
const prng = new Prng(seed);
const canvasElt = document.createElement("canvas");
canvasElt.width = area.width;
canvasElt.height = area.height;
canvasElt.style.display = "none";
const context = canvasElt.getContext("2d");
for (let i = 0; i < roundNumber; i++) {
addRandomCanvasGradient(prng, context, area);
context.shadowBlur = adaptRandomNumberToContext(prng.getNext(), maxShadowBlur);
context.shadowColor = colors[adaptRandomNumberToContext(prng.getNext(), colors.length)];
const randomPrimitive = primitives[adaptRandomNumberToContext(prng.getNext(), primitives.length)];
randomPrimitive(prng, context, area);
context.fill()
}
const r = {
data: canvasElt.toDataURL(),
hash: x64hash128(canvasElt.toDataURL(), seed)
}
return r
} catch (e) {}
}