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More writing for the main posts

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Bradlee Speice
2024-12-09 22:18:13 -05:00
parent b608a25146
commit 0983558659
16 changed files with 155 additions and 125 deletions
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33
blog/2024-11-15-playing-with-fire/3-log-density/chaosGameHistogram.ts
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@ -1,17 +1,19 @@
// hidden-start
import {randomBiUnit} from "../src/randomBiUnit";
import {randomChoice} from "../src/randomChoice";
import {ChaosGameFinalProps} from "../2-transforms/chaosGameFinal";
import {Props as ChaosGameFinalProps} from "../2-transforms/chaosGameFinal";
import {camera, histIndex} from "../src/camera";
// hidden-end
export type ChaosGameHistogramProps = ChaosGameFinalProps & {
paint: (width: number, histogram: Uint32Array) => ImageData;
}
export function* chaosGameHistogram({width, height, transforms, final, quality, step, paint}: ChaosGameHistogramProps) {
let iterations = (quality ?? 1) * width * height;
step = step ?? 10_000;
const histogram = new Uint32Array(width * height);
const quality = 10;
const step = 100_000;
// hidden-end
export type Props = ChaosGameFinalProps & {
paint: (width: number, height: number, histogram: number[]) => ImageData;
}
export function* chaosGameHistogram({width, height, transforms, final, paint}: Props) {
let iterations = quality * width * height;
const histogram = Array<number>(width * height).fill(0);
let [x, y] = [randomBiUnit(), randomBiUnit()];
@ -22,13 +24,18 @@ export function* chaosGameHistogram({width, height, transforms, final, quality,
if (i > 20) {
const [pixelX, pixelY] = camera(finalX, finalY, width);
const pixelIndex = histIndex(pixelX, pixelY, width, 1);
histogram[pixelIndex] += 1;
const hIndex = histIndex(pixelX, pixelY, width, 1);
if (hIndex < 0 || hIndex >= histogram.length) {
continue;
}
histogram[hIndex] += 1;
}
if (i % step === 0)
yield paint(width, histogram);
yield paint(width, height, histogram);
}
yield paint(width, histogram);
yield paint(width, height, histogram);
}