The avatar for @jobleonard
Job van der Zwan
Tinkering with code and algorithms for fun
Published
Edited
Sep 5, 2019
Fork of Dithering
•
1 fork
2 stars
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thresholdDither = {
let ctx = DOM.canvas(data.width, data.height).getContext('2d');
ctx.canvas.style.width = `${data.width * 2}px`;
ctx.canvas.style.imageRendering = 'pixelated';
let clone = new ImageData(new Uint8ClampedArray(data.data.data), data.width, data.height);
for (let x = 0; x < clone.data.length; x += 4)
clone.data[x] = clone.data[x + 1] = clone.data[x + 2] =
(clone.data[x] + clone.data[x + 1] + clone.data[x + 2]) > threshold ? 255 : 0;
ctx.putImageData(clone, 0, 0);
return ctx.canvas;
}
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randomDither = {
let ctx = DOM.canvas(data.width, data.height).getContext('2d');
ctx.canvas.style.width = `${data.width * 2}px`;
ctx.canvas.style.imageRendering = 'pixelated';
let clone = new ImageData(new Uint8ClampedArray(data.data.data), data.width, data.height);
for (let x = 0; x < clone.data.length; x += 4)
clone.data[x] = clone.data[x + 1] = clone.data[x + 2] =
(clone.data[x] + clone.data[x + 1] + clone.data[x + 2]) > (Math.random() * 255 * 3) ? 255 : 0;
ctx.putImageData(clone, 0, 0);
return ctx.canvas;
}
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