1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
Effects = (function() {
function pixelate(id) {
var canvas = document.getElementById('canvas-' + id);
var p = new paper.PaperScope();
p.setup(canvas);
var raster = new paper.Raster('img-' + id);
raster.visible = false;
var gridSize = 6;
var gridDim = 9;
var cols = [];
raster.size = new paper.Size(153, 153); // hard coded workaround to round values
raster.position = p.view.center;
raster.on('load', function() {
var h = Math.round(raster.height / gridDim);
var w = Math.round(raster.width / gridDim);
for (var y = 0; y < gridDim; y++) {
for(var x = 0; x < gridDim; x++) {
var color = raster.getAverageColor(new paper.Path.Rectangle({
point: [w*x, h*y],
size: [w, h]
}));
// console.log(w, h, x, y, color.red, color.green, color.blue);
cols.push(
Math.round(256 * color.red),
Math.round(256 * color.green),
Math.round(256 * color.blue),
1 // alpha
);
var rec = new paper.Path.Rectangle({
point: [x * gridSize, y * gridSize],
size: [gridSize, gridSize],
strokeColor: color,
fillColor: color
});
}
}
p.view.draw();
cols = new Uint8Array(cols);
var quant = new RgbQuant({
colors: 2,
minHueCols: 16
});
quant.sample(cols);
var palette = quant.palette(true);
var newcolors = quant.reduce(cols);
var newcolors2 = [];
for (var x=0; x < gridDim * gridDim; x++) {
newcolors2.push([newcolors[(x*4)], newcolors[(x*4)+1], newcolors[(x*4)+2]]);
// skip dummy alpha value (x*4)+3
}
Session.set(id + ':colors', cols);
Session.set(id + ':newcolors', newcolors2);
});
}
function colorize(id) {
var canvas = document.getElementById('canvas-' + id);
var p = new paper.PaperScope();
p.setup(canvas);
// params
var gridSize = 6;
var gridDim = 9;
// fetch the new colors
var pc1 = new paper.Color(Session.get(id + ':pc1'));
var pc2 = new paper.Color(Session.get(id + ':pc2'));
var colors = Session.get(id + ':newcolors');
// sample each color, diff and color new pixels
for (var y = 0; y < gridDim; y++) {
for(var x = 0; x < gridDim; x++) {
var c = colors[(y * gridDim) + x];
var nc = new paper.Color(c[0] / 256, c[1] / 256, c[2] / 256);
// console.log(x * gridSize, y * gridSize, nc);
var rec = new paper.Path.Rectangle({
point: [x * gridSize, y * gridSize],
size: [gridSize, gridSize],
strokeColor: nc,
fillColor: nc
});
}
}
p.view.draw();
}
return {
pixelate: pixelate,
colorize: colorize
}
})();
|
