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Refactor, fix julia bug, implement binary/linear/logarithmic membership

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This commit is contained in:
Bradlee Speice
2023-07-02 23:34:34 +00:00
parent e8ec0e0521
commit 671b97b7a0
8 changed files with 249 additions and 59 deletions
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20
posts/2023/06/flam3/1-gasket.ts
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@ -1,6 +1,4 @@
import { randomInteger, renderFn } from "./0-utility";
const ITER = 100_000;
import { randomBiUnit, randomInteger, renderFn, imageIndex } from "./0-utility";
function plot(x: number, y: number, image: ImageData) {
// A trivial `plot` implementation would take the range [-1, 1],
@ -19,10 +17,8 @@ function plot(x: number, y: number, image: ImageData) {
var pixelX = Math.floor((-x + 1) * image.width);
var pixelY = Math.floor((-y + 1) * image.height);
// Now translate the (x, y) pixel coordinates to a buffer index
// and paint it black:
const index = pixelY * (image.width * 4) + pixelX * 4;
// Set the pixel black:
const index = imageIndex(pixelX, pixelY, image.width);
image.data[index + 0] = 0;
image.data[index + 1] = 0;
image.data[index + 2] = 0;
@ -44,13 +40,13 @@ export const gasket: renderFn = (image) => {
},
];
let x = Math.random() * 2 - 1;
let y = Math.random() * 2 - 1;
let x = randomBiUnit();
let y = randomBiUnit();
// Heuristic for iteration count
const iter = image.height * image.width;
// Plot with quality 1
const iterations = image.height * image.width;
for (var i = 0; i < iter; i++) {
for (var i = 0; i < iterations; i++) {
const Fi = randomInteger(0, F.length);
[x, y] = F[Fi](x, y);