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695 lines
18 KiB
Plaintext
695 lines
18 KiB
Plaintext
// if (view.connectToInspector)
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// view.connectToInspector();
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function Array.max() {
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if (this.length === 0) return null;
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if (this.length === 1) return this[0];
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var v = this[0];
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for (var i = 1; i < this.length; i++)
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v = Integer.max(this[i], v);
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return v;
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}
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class pv {
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function map(array, f = false) {
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var o = {};
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return f ? array.map(function(d, i) {
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o.index = i;
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return f.call(o, d);
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}) : array.slice();
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}
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function naturalOrder(a, b) {
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return (a < b) ? -1 : ((a > b) ? 1 : 0);
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}
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function sum(array, f = false) {
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var o = {};
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return array.reduce(f ? function(p, d, i) {
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o.index = i;
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return p + f.call(o, d);
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} : function(p, d) {
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return p + d;
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}, 0);
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}
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function max(array, f = false) {
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return f ? pv.map(array, f).max() : array.max();
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}
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}
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function bnot(x) {
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if (x < 0)
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return Math.ceil(x).toInteger();
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else
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return Math.floor(x).toInteger();
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}
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class MMCQ {
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var sigbits = 5,
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rshift = 8 - sigbits,
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maxIterations = 1000,
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fractByPopulations = 0.75;
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function getColorIndex(r, g, b) {
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return (r << (2 * sigbits)) + (g << sigbits) + b;
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}
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function PQueue(comparator) {
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var contents = [],
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sorted = false;
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function sort() {
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contents.sort(comparator);
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sorted = true;
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}
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return {
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push: function(o) {
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contents.push(o);
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sorted = false;
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},
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peek: function(index) {
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if (!sorted) sort();
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if (index === undefined) index = contents.length - 1;
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return contents[index];
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},
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pop: function() {
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if (!sorted) sort();
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return contents.pop();
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},
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size: function() {
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return contents.length;
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},
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map: function(f) {
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return contents.map(f);
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},
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debug: function() {
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if (!sorted) sort();
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return contents;
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}
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};
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}
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class VBox {
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function this(r1, r2, g1, g2, b1, b2, histo) {
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var vbox = this;
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vbox.r1 = r1;
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vbox.r2 = r2;
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vbox.g1 = g1;
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vbox.g2 = g2;
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vbox.b1 = b1;
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vbox.b2 = b2;
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vbox.histo = histo;
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}
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function volume(force = false) {
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var vbox = this;
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if (!vbox._volume || force)
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vbox._volume = ((vbox.r2 - vbox.r1 + 1) * (vbox.g2 - vbox.g1 + 1) * (vbox.b2 - vbox.b1 + 1));
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return vbox._volume;
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}
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function count(force = false) {
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var vbox = this,
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histo = vbox.histo;
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if (!vbox._count_set || force) {
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var npix = 0, i, j, k;
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for (i = vbox.r1; i <= vbox.r2; i++)
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for (j = vbox.g1; j <= vbox.g2; j++)
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for (k = vbox.b1; k <= vbox.b2; k++)
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npix += (histo[getColorIndex(i, j, k)] || 0);
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vbox._count = npix;
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vbox._count_set = true;
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}
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return vbox._count;
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}
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function copy() {
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var vbox = this;
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return new VBox(vbox.r1, vbox.r2, vbox.g1, vbox.g2, vbox.b1, vbox.b2, vbox.histo);
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}
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function avg(force = false) {
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var vbox = this,
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histo = vbox.histo;
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if (!vbox._avg || force) {
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var ntot = 0,
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mult = 1 << (8 - sigbits),
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rsum = 0,
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gsum = 0,
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bsum = 0,
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hval,
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i, j, k;
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for (i = vbox.r1; i <= vbox.r2; i++)
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for (j = vbox.g1; j <= vbox.g2; j++)
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for (k = vbox.b1; k <= vbox.b2; k++) {
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hval = histo[getColorIndex(i, j, k)] || 0;
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ntot += hval;
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rsum += (hval * (i + 0.5) * mult);
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gsum += (hval * (j + 0.5) * mult);
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bsum += (hval * (k + 0.5) * mult);
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}
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if (ntot)
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vbox._avg = [bnot(rsum / ntot), bnot(gsum / ntot), bnot(bsum / ntot)];
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else
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vbox._avg = [bnot(mult * (vbox.r1 + vbox.r2 + 1) / 2), bnot(mult * (vbox.g1 + vbox.g2 + 1) / 2), bnot(mult * (vbox.b1 + vbox.b2 + 1) / 2)];
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}
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return vbox._avg;
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}
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function contains(pixel) {
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var vbox = this,
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rval = pixel[0] >> rshift;
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gval = pixel[1] >> rshift;
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bval = pixel[2] >> rshift;
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return (rval >= vbox.r1 && rval <= vbox.r2 &&
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gval >= vbox.g1 && gval <= vbox.g2 &&
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bval >= vbox.b1 && bval <= vbox.b2);
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}
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}
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class CMap {
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function this() {
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this.vboxes = PQueue(function(a, b) {
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return pv.naturalOrder(
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a.vbox.count() * a.vbox.volume(),
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b.vbox.count() * b.vbox.volume()
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)
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});
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}
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function push(vbox) {
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this.vboxes.push({
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vbox: vbox,
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color: vbox.avg()
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});
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}
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function palette() {
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return this.vboxes.map(function(vb) {
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return vb.color
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});
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}
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function size() {
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return this.vboxes.size();
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}
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function map(color) {
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var vboxes = this.vboxes;
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for (var i = 0; i < vboxes.size(); i++)
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if (vboxes.peek(i).vbox.contains(color))
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return vboxes.peek(i).color;
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return this.nearest(color);
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}
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function nearest(color) {
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var vboxes = this.vboxes,
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d1, d2, pColor;
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for (var i = 0; i < vboxes.size(); i++) {
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d2 = Math.sqrt(
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Math.pow(color[0] - vboxes.peek(i).color[0], 2) +
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Math.pow(color[1] - vboxes.peek(i).color[1], 2) +
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Math.pow(color[2] - vboxes.peek(i).color[2], 2)
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);
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if (d2 < d1 || d1 === undefined) {
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d1 = d2;
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pColor = vboxes.peek(i).color;
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}
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}
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return pColor;
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}
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function forcebw() {
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var vboxes = this.vboxes;
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vboxes.sort(function(a, b) {
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return pv.naturalOrder(pv.sum(a.color), pv.sum(b.color))
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});
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var lowest = vboxes[0].color;
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if (lowest[0] < 5 && lowest[1] < 5 && lowest[2] < 5)
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vboxes[0].color = [0, 0, 0];
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var idx = vboxes.length - 1,
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highest = vboxes[idx].color;
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if (highest[0] > 251 && highest[1] > 251 && highest[2] > 251)
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vboxes[idx].color = [255, 255, 255];
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}
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}
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function getHisto(pixels) {
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var histosize = 1 << (3 * sigbits),
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histo = new Array(histosize),
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index, rval, gval, bval;
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for (var pixel in pixels) {
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rval = pixel[0] >> rshift;
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gval = pixel[1] >> rshift;
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bval = pixel[2] >> rshift;
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index = getColorIndex(rval, gval, bval);
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histo[index] = (histo[index] || 0) + 1;
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}
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return histo;
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}
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function vboxFromPixels(pixels, histo) {
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var rmin = 1000000,
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rmax = 0,
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gmin = 1000000,
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gmax = 0,
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bmin = 1000000,
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bmax = 0,
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rval, gval, bval;
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for (var pixel in pixels) {
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rval = pixel[0] >> rshift;
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gval = pixel[1] >> rshift;
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bval = pixel[2] >> rshift;
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if (rval < rmin) rmin = rval;
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else if (rval > rmax) rmax = rval;
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if (gval < gmin) gmin = gval;
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else if (gval > gmax) gmax = gval;
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if (bval < bmin) bmin = bval;
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else if (bval > bmax) bmax = bval;
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}
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return new VBox(rmin, rmax, gmin, gmax, bmin, bmax, histo);
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}
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function medianCutApply(histo, vbox) {
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if (!vbox.count()) return;
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var rw = vbox.r2 - vbox.r1 + 1,
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gw = vbox.g2 - vbox.g1 + 1,
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bw = vbox.b2 - vbox.b1 + 1,
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maxw = pv.max([rw, gw, bw]);
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if (vbox.count() == 1) return [vbox.copy()];
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var total = 0,
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partialsum = [],
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lookaheadsum = [],
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i, j, k, sum;
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if (maxw == rw) {
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for (i = vbox.r1; i <= vbox.r2; i++) {
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sum = 0;
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for (j = vbox.g1; j <= vbox.g2; j++)
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for (k = vbox.b1; k <= vbox.b2; k++)
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sum += (histo[getColorIndex(i, j, k)] || 0);
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total += sum;
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partialsum[i] = total;
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}
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} else if (maxw == gw) {
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for (i = vbox.g1; i <= vbox.g2; i++) {
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sum = 0;
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for (j = vbox.r1; j <= vbox.r2; j++)
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for (k = vbox.b1; k <= vbox.b2; k++)
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sum += (histo[getColorIndex(j, i, k)] || 0);
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total += sum;
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partialsum[i] = total;
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}
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} else {
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for (i = vbox.b1; i <= vbox.b2; i++) {
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sum = 0;
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for (j = vbox.r1; j <= vbox.r2; j++)
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for (k = vbox.g1; k <= vbox.g2; k++)
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sum += (histo[getColorIndex(j, k, i)] || 0);
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total += sum;
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partialsum[i] = total;
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}
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}
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for (var (i, d) in partialsum)
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if (d !== undefined && i !== undefined) lookaheadsum[i] = total - d;
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function doCut(color) {
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var dim1 = color + "1",
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dim2 = color + "2",
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left, right, vbox1, vbox2, d2, count2 = 0;
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for (i = vbox[dim1]; i <= vbox[dim2]; i++) {
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if (partialsum[i] > total / 2) {
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vbox1 = vbox.copy();
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vbox2 = vbox.copy();
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left = i - vbox[dim1];
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right = vbox[dim2] - i;
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if (left <= right)
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d2 = Integer.min(vbox[dim2] - 1, bnot(i + right / 2));
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else
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d2 = Integer.max(vbox[dim1], bnot(i - 1 - left / 2));
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d2 = Integer.max(0, d2);
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while (!partialsum[d2]) d2++;
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count2 = lookaheadsum[d2];
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while (!count2 && d2 >= 1 && partialsum[d2 - 1]) count2 = lookaheadsum[--d2];
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vbox1[dim2] = d2;
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vbox2[dim1] = vbox1[dim2] + 1;
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return [vbox1, vbox2];
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}
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}
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}
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return maxw == rw ? doCut("r") : maxw == gw ? doCut("g") : doCut("b");
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}
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function quantize(pixels, maxcolors) {
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if (!pixels.length || maxcolors < 2 || maxcolors > 256) return false;
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var histo = getHisto(pixels),
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histosize = 1 << (3 * sigbits);
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var vbox = vboxFromPixels(pixels, histo),
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pq = PQueue(function(a, b) {
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return pv.naturalOrder(a.count(), b.count())
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});
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pq.push(vbox);
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function iter(lh, target) {
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var ncolors = 1,
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niters = 0,
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vbox;
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while (niters < maxIterations) {
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vbox = lh.pop();
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if (!vbox.count()) {
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lh.push(vbox);
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niters++;
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continue;
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}
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var vboxes = medianCutApply(histo, vbox);
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if (!vboxes[0]) return;
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lh.push(vboxes[0]);
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if (vboxes.length > 1 && vboxes[1]) {
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lh.push(vboxes[1]);
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ncolors++;
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}
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if (ncolors >= target) return;
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if (niters++ > maxIterations) return;
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}
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}
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iter(pq, fractByPopulations * maxcolors);
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var pq2 = PQueue(function(a, b) {
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return pv.naturalOrder(a.count() * a.volume(), b.count() * b.volume())
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});
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while (pq.size()) pq2.push(pq.pop());
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iter(pq2, maxcolors - pq2.size());
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var cmap = new CMap();
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while (pq2.size()) cmap.push(pq2.pop());
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return cmap;
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}
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}
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var bind = function(fn, me) {
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return function(arguments..) {
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return fn.apply(me, arguments);
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};
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},
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slice = [].slice;
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class Swatch {
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var hsl = undefined;
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var rgb = undefined;
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var population = 1;
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var yiq = 0;
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function this(rgb, population) {
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this.rgb = rgb;
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this.population = population;
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}
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function getHsl() {
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if (!this.hsl)
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return this.hsl = Vibrant.rgbToHsl(this.rgb[0], this.rgb[1], this.rgb[2]);
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else
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return this.hsl;
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}
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function getPopulation() {
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return this.population;
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}
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function getRgb() {
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return this.rgb;
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}
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function getHex() {
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return "#" + ((1 << 24) + (this.rgb[0].toInteger() << 16) + (this.rgb[1].toInteger() << 8) + this.rgb[2].toInteger()).toString(16).slice(1, 7);
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}
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function getTitleTextColor() {
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this._ensureTextColors();
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if (this.yiq < 200)
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return "#fff";
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else
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return "#000";
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}
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function getBodyTextColor() {
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this._ensureTextColors();
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if (this.yiq < 150)
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return "#fff";
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else
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return "#000";
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}
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function _ensureTextColors() {
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if (!this.yiq)
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return this.yiq = (this.rgb[0] * 299 + this.rgb[1] * 587 + this.rgb[2] * 114) / 1000;
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}
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}
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class Vibrant {
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var _swatches = [];
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const TARGET_DARK_LUMA = 0.26;
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const MAX_DARK_LUMA = 0.45;
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const MIN_LIGHT_LUMA = 0.55;
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const TARGET_LIGHT_LUMA = 0.74;
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const MIN_NORMAL_LUMA = 0.3;
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const TARGET_NORMAL_LUMA = 0.5;
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const MAX_NORMAL_LUMA = 0.7;
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const TARGET_MUTED_SATURATION = 0.3;
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const MAX_MUTED_SATURATION = 0.4;
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const TARGET_VIBRANT_SATURATION = 1;
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const MIN_VIBRANT_SATURATION = 0.35;
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const WEIGHT_SATURATION = 3;
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const WEIGHT_LUMA = 6;
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const WEIGHT_POPULATION = 1;
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var VibrantSwatch = undefined;
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var MutedSwatch = undefined;
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var DarkVibrantSwatch = undefined;
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var DarkMutedSwatch = undefined;
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var LightVibrantSwatch = undefined;
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var LightMutedSwatch = undefined;
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var HighestPopulation = 0;
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function this(image) {
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this.swatches = bind(this.swatches, this);
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var allPixels, cmap, x, y, offset, pixelCount, clr;
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try {
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pixelCount = image.width * image.height;
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allPixels = [];
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var quality = image.width / 64;
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if (quality < 2) quality = 2;
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//debug img: image.width, image.height, quality;
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y = 0;
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x = 0;
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while (y < image.height) {
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while (x < image.width) {
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clr = image.colorAt(x, y);
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if (clr && clr.a >= 125)
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if (!(clr.r > 250 && clr.g > 250 && clr.b > 250))
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allPixels.push([clr.r, clr.g, clr.b]);
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x = x + quality;
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if (x >= image.width) {
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x = x - image.width;
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break;
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}
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}
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y++;
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}
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cmap = MMCQ.quantize(allPixels, 64);
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if (cmap)
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this._swatches = cmap.vboxes.map((function(_this) {
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return function(vbox) {
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return new Swatch(vbox.color, vbox.vbox.count());
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};
|
|
})(this));
|
|
this.HighestPopulation = this.findMaxPopulation();
|
|
this.generateVarationColors();
|
|
this.generateEmptySwatches();
|
|
} finally {}
|
|
}
|
|
|
|
function generateVarationColors() {
|
|
this.VibrantSwatch = this.findColorVariation(this.TARGET_NORMAL_LUMA, this.MIN_NORMAL_LUMA, this.MAX_NORMAL_LUMA, this.TARGET_VIBRANT_SATURATION, this.MIN_VIBRANT_SATURATION, 1);
|
|
this.LightVibrantSwatch = this.findColorVariation(this.TARGET_LIGHT_LUMA, this.MIN_LIGHT_LUMA, 1, this.TARGET_VIBRANT_SATURATION, this.MIN_VIBRANT_SATURATION, 1);
|
|
this.DarkVibrantSwatch = this.findColorVariation(this.TARGET_DARK_LUMA, 0, this.MAX_DARK_LUMA, this.TARGET_VIBRANT_SATURATION, this.MIN_VIBRANT_SATURATION, 1);
|
|
this.MutedSwatch = this.findColorVariation(this.TARGET_NORMAL_LUMA, this.MIN_NORMAL_LUMA, this.MAX_NORMAL_LUMA, this.TARGET_MUTED_SATURATION, 0, this.MAX_MUTED_SATURATION);
|
|
this.LightMutedSwatch = this.findColorVariation(this.TARGET_LIGHT_LUMA, this.MIN_LIGHT_LUMA, 1, this.TARGET_MUTED_SATURATION, 0, this.MAX_MUTED_SATURATION);
|
|
return this.DarkMutedSwatch = this.findColorVariation(this.TARGET_DARK_LUMA, 0, this.MAX_DARK_LUMA, this.TARGET_MUTED_SATURATION, 0, this.MAX_MUTED_SATURATION);
|
|
}
|
|
|
|
function generateEmptySwatches() {
|
|
var hsl;
|
|
if (this.VibrantSwatch === undefined)
|
|
if (this.DarkVibrantSwatch !== undefined) {
|
|
hsl = this.DarkVibrantSwatch.getHsl();
|
|
hsl[2] = this.TARGET_NORMAL_LUMA;
|
|
this.VibrantSwatch = new Swatch(Vibrant.hslToRgb(hsl[0], hsl[1], hsl[2]), 0);
|
|
}
|
|
if (this.DarkVibrantSwatch === undefined)
|
|
if (this.VibrantSwatch !== undefined) {
|
|
hsl = this.VibrantSwatch.getHsl();
|
|
hsl[2] = this.TARGET_DARK_LUMA;
|
|
return this.DarkVibrantSwatch = new Swatch(Vibrant.hslToRgb(hsl[0], hsl[1], hsl[2]), 0);
|
|
}
|
|
}
|
|
|
|
function findMaxPopulation() {
|
|
var j, len, population, ref, swatch;
|
|
population = 0;
|
|
ref = this._swatches;
|
|
len = ref.length;
|
|
for (j = 0; j < len; j++) {
|
|
swatch = ref[j];
|
|
population = Integer.max(population, swatch.getPopulation());
|
|
}
|
|
return population;
|
|
}
|
|
|
|
function findColorVariation(targetLuma, minLuma, maxLuma, targetSaturation, minSaturation, maxSaturation) {
|
|
var j, len, luma, max, maxValue, ref, sat, swatch, value;
|
|
max = undefined;
|
|
maxValue = 0;
|
|
ref = this._swatches;
|
|
len = ref.length
|
|
for (j = 0; j < len; j++) {
|
|
swatch = ref[j];
|
|
sat = swatch.getHsl()[1];
|
|
luma = swatch.getHsl()[2];
|
|
if (sat >= minSaturation && sat <= maxSaturation && luma >= minLuma && luma <= maxLuma && !this.isAlreadySelected(swatch)) {
|
|
value = this.createComparisonValue(sat, targetSaturation, luma, targetLuma, swatch.getPopulation());
|
|
if (max === undefined || value > maxValue) {
|
|
max = swatch;
|
|
maxValue = value;
|
|
}
|
|
}
|
|
}
|
|
return max;
|
|
}
|
|
|
|
function createComparisonValue(saturation, targetSaturation, luma, targetLuma, population) {
|
|
return this.weightedMean(this.invertDiff(saturation, targetSaturation), this.WEIGHT_SATURATION, this.invertDiff(luma, targetLuma), this.WEIGHT_LUMA, population / this.HighestPopulation, this.WEIGHT_POPULATION);
|
|
}
|
|
|
|
function invertDiff(value, targetValue) {
|
|
return 1 - Math.abs(value - targetValue);
|
|
}
|
|
|
|
function weightedMean(arguments..) {
|
|
var i, sum, sumWeight, value, values, weight;
|
|
values = 1 <= arguments.length ? slice.call(arguments, 0) : [];
|
|
sum = 0;
|
|
sumWeight = 0;
|
|
i = 0;
|
|
while (i < values.length) {
|
|
value = values[i];
|
|
weight = values[i + 1];
|
|
sum += value * weight;
|
|
sumWeight += weight;
|
|
i += 2;
|
|
}
|
|
return sum / sumWeight;
|
|
}
|
|
|
|
function swatches() {
|
|
return {
|
|
Vibrant: this.VibrantSwatch,
|
|
Muted: this.MutedSwatch,
|
|
DarkVibrant: this.DarkVibrantSwatch,
|
|
DarkMuted: this.DarkMutedSwatch,
|
|
LightVibrant: this.LightVibrantSwatch,
|
|
LightMuted: this.LightMuted
|
|
};
|
|
}
|
|
|
|
function isAlreadySelected(swatch) {
|
|
return this.VibrantSwatch === swatch || this.DarkVibrantSwatch === swatch || this.LightVibrantSwatch === swatch || this.MutedSwatch === swatch || this.DarkMutedSwatch === swatch || this.LightMutedSwatch === swatch;
|
|
}
|
|
|
|
function rgbToHsl(r, g, b) {
|
|
var d, h, l, max, min, s;
|
|
r /= 255.0;
|
|
g /= 255.0;
|
|
b /= 255.0;
|
|
max = Float.max(r, g, b);
|
|
min = Float.min(r, g, b);
|
|
h = undefined;
|
|
s = undefined;
|
|
l = (max + min) / 2;
|
|
if (max === min) {
|
|
h = s = 0;
|
|
} else {
|
|
d = max - min;
|
|
s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
|
|
switch (max) {
|
|
case r:
|
|
h = (g - b) / d + (g < b ? 6 : 0);
|
|
break;
|
|
case g:
|
|
h = (b - r) / d + 2;
|
|
break;
|
|
case b:
|
|
h = (r - g) / d + 4;
|
|
}
|
|
h /= 6.0;
|
|
}
|
|
return [h, s, l];
|
|
}
|
|
|
|
function hslToRgb(h, s, l) {
|
|
var b, g, hue2rgb, p, q, r;
|
|
r = undefined;
|
|
g = undefined;
|
|
b = undefined;
|
|
hue2rgb = function(p, q, t) {
|
|
if (t < 0) {
|
|
t += 1;
|
|
}
|
|
if (t > 1) {
|
|
t -= 1;
|
|
}
|
|
if (t < 1 / 6) {
|
|
return p + (q - p) * 6 * t;
|
|
}
|
|
if (t < 1 / 2) {
|
|
return q;
|
|
}
|
|
if (t < 2 / 3) {
|
|
return p + (q - p) * (2 / 3 - t) * 6;
|
|
}
|
|
return p;
|
|
};
|
|
if (s === 0) {
|
|
r = g = b = l;
|
|
} else {
|
|
q = l < 0.5 ? l * (1 + s) : l + s - (l * s);
|
|
p = 2 * l - q;
|
|
r = hue2rgb(p, q, h + 1 / 3);
|
|
g = hue2rgb(p, q, h);
|
|
b = hue2rgb(p, q, h - (1 / 3));
|
|
}
|
|
return [r * 255, g * 255, b * 255];
|
|
}
|
|
}
|
|
|
|
function getImageColors(image) {
|
|
var bts = new Bytes(image.length);
|
|
for (var (index, bt) in image) bts[index] = bt;
|
|
var img = Image.fromBytes(bts);
|
|
var vibrant = new Vibrant(img);
|
|
var swatches = vibrant.swatches();
|
|
|
|
// for (var swatch in swatches)
|
|
// if (swatches[swatch])
|
|
// stdout.println(swatch + ": " + swatches[swatch].getHex());
|
|
// else
|
|
// stdout.println(swatch + ": undefined");
|
|
|
|
var swt = null;
|
|
if (swatches.Muted)
|
|
swt = swatches.Muted;
|
|
else if (swatches.DarkMuted)
|
|
swt = swatches.DarkMuted;
|
|
else if (swatches.Vibrant)
|
|
swt = swatches.Vibrant;
|
|
else if (swatches.DarkVibrant)
|
|
swt = swatches.DarkVibrant;
|
|
|
|
if (swt !== null)
|
|
return [swt.getHex(), swt.getTitleTextColor()];
|
|
else
|
|
return [];
|
|
} |