29 lines
709 B
JavaScript
29 lines
709 B
JavaScript
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'use strict';
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const linearTransform = (a, b, c, d, e, f) => point => [
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a * point[0] + b * point[1] + e,
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c * point[0] + d * point[1] + f
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];
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const polygonTransforms = (vertices, frac) => vertices.map(
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vertex => linearTransform(
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frac, 0, 0, frac,
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vertex[0] * (frac - 1), vertex[1] * (frac - 1)
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)
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);
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export const barnsley = [[
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linearTransform(0, 0, 0, 0.16, 0, 0),
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linearTransform(.85, .04, -.04, .85, 0, 1.6),
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linearTransform(.20, -.26, .23, .22, 0, 1.6),
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linearTransform(-.15, .28, .26, .24, 0, .44)
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], [
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.01, .85, .07, .07
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]];
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export const sierpinski = [polygonTransforms([
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[.866, .5],
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[-.866, .5],
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[0, -1]
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], 1 / 2), [1 / 3, 1 / 3, 1 / 3]];
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