The avatar for @ada-lovecraft
Ada Lovecraft
Public
Edited
Oct 20, 2019
82 stars
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dimensions = ({
a: mapWidth >> 8,
b: mapWidth >> 7,
c: mapWidth >> 6,
d: mapWidth >> 5,
e: mapWidth >> 4,
f: mapWidth >> 3,
g: mapWidth >> 2,
h: mapWidth >> 1,
i: mapWidth >> 0
})
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{
const ctx = baseCanvas.getContext('2d')
ctx.globalAlpha = 1 / numOctaves
ctx.globalCompositeOperation = 'lighter'
return baseCanvas
}
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alphaMap = clonePixels(noiseMap, [
red => 0,
green => 0,
blue => 0,
alpha => alpha,
])
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Type JavaScript, then Shift-Enter. Ctrl-space for more options. Arrow ↑/↓ to switch modes.

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merges = {
const a = addOverlayDemo(baseCanvas, octaves.a, 1 / numOctaves);
const b = addOverlayDemo(a, octaves.b, 1 / numOctaves);
const c = addOverlayDemo(b, octaves.c, 1 / numOctaves);
const d = addOverlayDemo(c, octaves.d, 1 / numOctaves);
const e = addOverlayDemo(d, octaves.e, 1 / numOctaves);
const f = addOverlayDemo(e, octaves.f, 1 / numOctaves);
const g = addOverlayDemo(f, octaves.g, 1 / numOctaves);
const h = addOverlayDemo(g, octaves.h, 1 / numOctaves);
const i = addOverlayDemo(h, octaves.i, 1 / numOctaves);
return { a, b, c, d, e, f, g, h, i };
}
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Type JavaScript, then Shift-Enter. Ctrl-space for more options. Arrow ↑/↓ to switch modes.

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