31 lines
959 B
TypeScript
31 lines
959 B
TypeScript
import { RenderParams, histIndex, imageIndex } from "./0-utility.js";
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import { transformAllPost } from "./2b-post.js";
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import { transformFinal } from "./2c-final.js";
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import { RendererHistogram } from "./3a-binary.js";
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class RendererLinear extends RendererHistogram {
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render(image: ImageData): void {
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const maxHistogram = this.histogram.reduce(
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(max, v) => Math.max(max, v),
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-Infinity
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);
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for (var x = 0; x < this.size; x++) {
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for (var y = 0; y < this.size; y++) {
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const hIndex = histIndex(x, y, this.size);
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const iIndex = imageIndex(x, y, this.size);
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image.data[iIndex + 0] = 0;
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image.data[iIndex + 1] = 0;
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image.data[iIndex + 2] = 0;
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image.data[iIndex + 3] = (this.histogram[hIndex] / maxHistogram) * 0xff;
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}
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}
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}
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}
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export const paramsLinear: RenderParams = {
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quality: 10,
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renderer: (size) =>
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new RendererLinear(size, transformAllPost, transformFinal),
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};
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