dakedres/ronin
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cleanup

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Devine Lu Linvega
2019-07-22 07:40:34 +09:00
parent e5542ed8db
commit 62747aaf23
1 changed files with 15 additions and 15 deletions
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10
desktop/sources/scripts/library.js
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@@ -322,16 +322,16 @@ function Library (ronin) {
this.convolve = (rect, kernel) => { this.convolve = (rect, kernel) => {
const sigma = kernel.flat().reduce((a, x) => (a + x)) const sigma = kernel.flat().reduce((a, x) => (a + x))
const kw = kernel[0].length, kh = kernel.length const kw = kernel[0].length; const kh = kernel.length
const img = ronin.surface.context.getImageData(rect.x, rect.y, rect.w, rect.h) const img = ronin.surface.context.getImageData(rect.x, rect.y, rect.w, rect.h)
const out = new Uint8ClampedArray(rect.w * 4 * rect.h) const out = new Uint8ClampedArray(rect.w * 4 * rect.h)
for (let i = 0, outer = img.data.length; i < outer; i++) { // bytes for (let i = 0, outer = img.data.length; i < outer; i++) { // bytes
const ix = Math.floor(i/4) % rect.w, iy = Math.floor((i/4) / rect.w) const ix = Math.floor(i / 4) % rect.w; const iy = Math.floor((i / 4) / rect.w)
let acc = 0.0 let acc = 0.0
for (let k = 0, inner = kw * kh; k < inner; k++) { // kernel for (let k = 0, inner = kw * kh; k < inner; k++) { // kernel
const kx = (k%kw), ky = (Math.floor(k/kw)) const kx = (k % kw); const ky = (Math.floor(k / kw))
const x = Math.ceil(ix + kx - kw/2), y = Math.ceil(iy + ky - kh/2) const x = Math.ceil(ix + kx - kw / 2); const y = Math.ceil(iy + ky - kh / 2)
if( x < 0 || x >= rect.w || y < 0 || y >= rect.h ) continue; // edge case if (x < 0 || x >= rect.w || y < 0 || y >= rect.h) continue // edge case
acc += img.data[x * 4 + y * rect.w * 4 + i % 4] * kernel[kx][ky] / sigma acc += img.data[x * 4 + y * rect.w * 4 + i % 4] * kernel[kx][ky] / sigma
} }
out[i] = acc out[i] = acc