Implement everything in terms of an incremental render

This commit is contained in:
Bradlee Speice 2023-07-20 23:55:26 +00:00
parent 7f44243cd0
commit 04d5099338
15 changed files with 521 additions and 596 deletions

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@ -1,34 +1,5 @@
import React, { useEffect, useRef } from "react";
import { Renderer, renderFn } from "./0-utility";
export const Canvas: React.FC<{ f: renderFn }> = ({ f }) => {
const canvasRef = useRef<HTMLCanvasElement | null>(null);
let image: ImageData | null = null;
useEffect(() => {
if (canvasRef.current) {
const canvas = canvasRef.current;
const ctx = canvas.getContext("2d");
if (!ctx) {
return;
}
if (
!image ||
image.width !== canvas.width ||
image.height !== canvas.height
) {
image = ctx.createImageData(canvas.width, canvas.height);
}
f(image);
ctx.putImageData(image, 0, 0);
}
});
return <canvas ref={canvasRef} width={400} height={400} />;
};
import { Renderer } from "./0-utility";
export type CanvasParams = {
defaultUrl: string;

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@ -1,33 +0,0 @@
// https://stackoverflow.com/a/34356351
function hexToBytes(hex: string) {
var bytes = [];
for (var i = 0; i < hex.length; i += 2) {
bytes.push(parseInt(hex.substring(i, i + 2), 16));
}
return bytes;
}
export const paletteHex =
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
export const paletteBytes = hexToBytes(paletteHex);
console.log(paletteBytes);
// Re-scale colors to 0-1 (see flam3_get_palette)
export const paletteNumber = paletteBytes.map((b) => b / 0xff);
console.log(paletteNumber);
export function colorIndex(c: number): number {
return Math.floor(c * (paletteNumber.length / 3));
}
export function colorFromIndex(c: number): [number, number, number] {
// A smarter coloring implementation would interpolate between points in the palette,
// but we'll use a step function here to keep things simple
const colorIndex = Math.floor(c * (paletteNumber.length / 3)) * 3;
return [
paletteNumber[colorIndex + 0],
paletteNumber[colorIndex + 1],
paletteNumber[colorIndex + 2],
];
}

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@ -11,6 +11,8 @@ type Transform = (x: number, y: number) => [number, number];
export class RendererGasket extends Renderer {
private values = new Uint8Array(this.size * this.size);
private x = randomBiUnit();
private y = randomBiUnit();
/**
* Translate values in the flame coordinate system to pixel coordinates
@ -53,16 +55,17 @@ export class RendererGasket extends Renderer {
(x, y) => [x / 2, (y + 1) / 2],
];
let x = randomBiUnit();
let y = randomBiUnit();
// NOTE: `x` and `y` are set as fields on this class
// (rather than here in the main chaos game method) because
// we render in chunks (to avoid bogging down the browser)
const iterations = quality * this.size * this.size;
for (var i = 0; i < iterations; i++) {
const transformIndex = randomInteger(0, transforms.length);
[x, y] = transforms[transformIndex](x, y);
[this.x, this.y] = transforms[transformIndex](this.x, this.y);
if (i >= 20) {
this.plot(x, y);
this.plot(this.x, this.y);
}
}
}
@ -85,3 +88,7 @@ export class RendererGasket extends Renderer {
}
}
}
export function buildGasket(size: number) {
return new RendererGasket(size);
}

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@ -90,19 +90,40 @@ export class Transform {
}
}
/**
* Translate values in the flame coordinate system to pixel coordinates
*
* The way `flam3` actually calculates the "camera" for mapping a point
* to its pixel coordinate is fairly involved - it also needs to calculate
* zoom and rotation. We'll make some simplifying assumptions:
* - The final image is square
* - We want to plot the range [-2, 2]
*
* The reference parameters were designed in Apophysis, which uses the
* range [-2, 2] by default (the `scale` parameter in XML defines the
* "pixels per unit", and with the default zoom, is chosen to give a
* range of [-2, 2]).
*
* @param x point in the range [-2, 2]
* @param y point in the range [-2, 2]
* @param size image size
* @returns pair of pixel coordinates
*/
export function camera(x: number, y: number, size: number): [number, number] {
return [Math.floor(((x + 2) * size) / 4), Math.floor(((y + 2) * size) / 4)];
}
export class RendererFlame extends Renderer {
private values = new Uint8Array(this.size * this.size);
protected x = randomBiUnit();
protected y = randomBiUnit();
constructor(size: number, public readonly transforms: [number, Transform][]) {
super(size);
}
plot(x: number, y: number) {
// By default, Apophysis uses a camera that covers the range [-2, 2]
// (specifically, the `scale` parameter becomes `pixels_per_unit` in flam3)
// Shift the coordinate system to [0, 4], then scale to pixel coordinates
const pixelX = Math.floor(((x + 2) * this.size) / 4);
const pixelY = Math.floor(((y + 2) * this.size) / 4);
const [pixelX, pixelY] = camera(x, y, this.size);
if (
pixelX < 0 ||
@ -118,16 +139,13 @@ export class RendererFlame extends Renderer {
}
run(quality: number): void {
var x = randomBiUnit();
var y = randomBiUnit();
const iterations = quality * this.size * this.size;
for (var i = 0; i < iterations; i++) {
const [_, transform] = weightedChoice(this.transforms);
[x, y] = transform.apply(x, y);
[this.x, this.y] = transform.apply(this.x, this.y);
if (i > 20) {
this.plot(x, y);
this.plot(this.x, this.y);
}
}
}
@ -150,67 +168,6 @@ export class RendererFlame extends Renderer {
}
}
export class Flame {
protected x: number = randomBiUnit();
protected y: number = randomBiUnit();
constructor(public readonly transforms: [number, Transform][]) {}
step(): void {
const [_index, transform] = weightedChoice(this.transforms);
[this.x, this.y] = transform.apply(this.x, this.y);
}
current(): [number, number] {
return [this.x, this.y];
}
}
export function camera(x: number, y: number, size: number): [number, number] {
// Assuming both:
// - The origin is the intended center of the output image
// - The output image is square
// ...then map points in the range (-scale, scale) to pixel coordinates.
//
// The way `flam3` actually calculates the "camera" for taking a point
// and determining which pixel to update is fairly involved. The example
// fractal was designed in Apophysis (which shows points in the range
// [-2, 2] by default) so we use that assumption to simplify the math here.
return [Math.floor(((x + 2) * size) / 4), Math.floor(((y + 2) * size) / 4)];
}
export function plot(x: number, y: number, image: ImageData) {
const [pixelX, pixelY] = camera(x, y, image.width);
if (
pixelX < 0 ||
pixelX >= image.width ||
pixelY < 0 ||
pixelY >= image.height
) {
return;
}
const index = pixelY * (image.width * 4) + pixelX * 4;
image.data[index + 0] = 0;
image.data[index + 1] = 0;
image.data[index + 2] = 0;
image.data[index + 3] = 0xff;
}
export function render(flame: Flame, quality: number, image: ImageData) {
const iterations = quality * image.width * image.height;
for (var i = 0; i < iterations; i++) {
flame.step();
if (i > 20) {
const [flameX, flameY] = flame.current();
plot(flameX, flameY, image);
}
}
}
export const transform1Weight = 0.56453495;
export const transform1 = new Transform(
{
@ -253,10 +210,12 @@ export const transform3 = new Transform(
[[1, pdj(1.09358, 2.13048, 2.54127, 2.37267)]]
);
export function rendererBaseline(size: number) {
return new RendererFlame(size, [
[transform1Weight, transform1],
[transform2Weight, transform2],
[transform3Weight, transform3],
]);
export const transformAll: [number, Transform][] = [
[transform1Weight, transform1],
[transform2Weight, transform2],
[transform3Weight, transform3],
];
export function buildBaseline(size: number) {
return new RendererFlame(size, transformAll);
}

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@ -1,13 +1,8 @@
import { randomBiUnit, weightedChoice } from "./0-utility";
import {
Coefs,
Variation,
Flame,
Transform,
linear,
julia,
popcorn,
pdj,
render,
transform1Weight,
transform1,
transform2Weight,
@ -15,6 +10,7 @@ import {
transform3Weight,
transform3,
identityCoefs,
RendererFlame,
} from "./2a-variations";
export class TransformPost extends Transform {
@ -35,16 +31,6 @@ export class TransformPost extends Transform {
}
}
export function variationPost(coefs: Coefs, variation: Variation): Variation {
return (x, y, transformCoefs) => {
const [varX, varY] = variation(x, y, transformCoefs);
return [
varX * coefs.a + varY * coefs.b + coefs.c,
varX * coefs.d + varY * coefs.e + coefs.f,
];
};
}
export const transform1Post = new TransformPost(
transform1.coefs,
transform1.variations,
@ -70,12 +56,12 @@ export const transform3Post = new TransformPost(
identityCoefs
);
export function renderPost(image: ImageData) {
const flame = new Flame([
[transform1Weight, transform1],
[transform2Weight, transform2Post],
[transform3Weight, transform3],
]);
export const transformAllPost: [number, TransformPost][] = [
[transform1Weight, transform1Post],
[transform2Weight, transform2Post],
[transform3Weight, transform3Post],
];
render(flame, 1, image);
export function buildPost(size: number) {
return new RendererFlame(size, transformAllPost);
}

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@ -1,34 +1,5 @@
import {
Flame,
Transform,
julia,
transform1Weight,
transform2Weight,
transform3Weight,
render,
identityCoefs,
} from "./2a-variations";
import {
TransformPost,
transform1Post,
transform2Post,
transform3Post,
} from "./2b-post";
export class FlameFinal extends Flame {
didLog: boolean = false;
constructor(
transforms: [number, Transform][],
public readonly final: Transform
) {
super(transforms);
}
override current(): [number, number] {
return this.final.apply(this.x, this.y);
}
}
import { julia, identityCoefs, RendererFlame } from "./2a-variations";
import { TransformPost, transformAllPost } from "./2b-post";
export const transformFinal = new TransformPost(
{
@ -43,15 +14,20 @@ export const transformFinal = new TransformPost(
identityCoefs
);
export const flameFinal = new FlameFinal(
[
[transform1Weight, transform1Post],
[transform2Weight, transform2Post],
[transform3Weight, transform3Post],
],
transformFinal
);
export class RendererFinal extends RendererFlame {
constructor(
size: number,
transforms: [number, TransformPost][],
public readonly final: TransformPost
) {
super(size, transforms);
}
export function renderFinal(image: ImageData) {
render(flameFinal, 1, image);
plot(x: number, y: number): void {
super.plot(...this.final.apply(x, y));
}
}
export function buildFinal(size: number) {
return new RendererFinal(size, transformAllPost, transformFinal);
}

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@ -1,78 +1,72 @@
import { histIndex, imageIndex } from "./0-utility";
import { camera } from "./2a-variations";
import { flameFinal, FlameFinal } from "./2c-final";
import {
camera,
transform1Weight,
transform2Weight,
transform3Weight,
} from "./2a-variations";
import {
TransformPost,
transform1Post,
transform2Post,
transform3Post,
} from "./2b-post";
import { RendererFinal, transformFinal } from "./2c-final";
export abstract class Accumulator {
histogram: number[] = [];
export class RendererHistogram extends RendererFinal {
protected histogram: number[] = [];
constructor(
protected readonly width: number,
protected readonly height: number
size: number,
transforms: [number, TransformPost][],
final: TransformPost
) {
for (var i = 0; i < width * height; i++) {
super(size, transforms, final);
for (var i = 0; i < this.size * this.size; i++) {
this.histogram.push(0);
}
}
accumulate(x: number, y: number) {
const [pixelX, pixelY] = camera(x, y, this.width);
plot(x: number, y: number): void {
[x, y] = this.final.apply(x, y);
const [pixelX, pixelY] = camera(x, y, this.size);
if (
pixelX < 0 ||
pixelX >= this.width ||
pixelY >= this.size ||
pixelY < 0 ||
pixelY >= this.height
pixelY >= this.size
) {
return;
}
const index = histIndex(pixelX, pixelY, this.width);
this.histogram[index] += 1;
const hIndex = histIndex(pixelX, pixelY, this.size);
this.histogram[hIndex] += 1;
}
abstract render(image: ImageData): void;
}
class AccumulateBinary extends Accumulator {
render(image: ImageData) {
for (var x = 0; x < image.width; x++) {
for (var y = 0; y < image.height; y++) {
const index = histIndex(x, y, image.width);
// Color black if this pixel is part of the solution set, white otherwise
const value = this.histogram[index] > 0 ? 0 : 0xff;
const iIdx = imageIndex(x, y, image.width);
image.data[iIdx + 0] = value;
image.data[iIdx + 1] = value;
image.data[iIdx + 2] = value;
image.data[iIdx + 3] = value ? 0xff : 0;
render(image: ImageData): void {
for (var x = 0; x < this.size; x++) {
for (var y = 0; y < this.size; y++) {
const hIndex = histIndex(x, y, this.size);
const iIndex = imageIndex(x, y, this.size);
image.data[iIndex + 0] = 0;
image.data[iIndex + 1] = 0;
image.data[iIndex + 2] = 0;
image.data[iIndex + 3] = (this.histogram[hIndex] > 0 ? 1 : 0) * 0xff;
}
}
}
}
export function render(
flame: FlameFinal,
quality: number,
accumulator: Accumulator,
image: ImageData
) {
const iterations = quality * image.width * image.height;
for (var i = 0; i < iterations; i++) {
flame.step();
if (i > 20) {
const [flameX, flameY] = flame.current();
accumulator.accumulate(flameX, flameY);
}
}
accumulator.render(image);
}
export function renderBinary(image: ImageData) {
const accumulator = new AccumulateBinary(image.width, image.height);
render(flameFinal, 10, accumulator, image);
export function buildBinary(size: number) {
return new RendererHistogram(
size,
[
[transform1Weight, transform1Post],
[transform2Weight, transform2Post],
[transform3Weight, transform3Post],
],
transformFinal
);
}

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@ -1,30 +1,25 @@
import { histIndex, imageIndex } from "./0-utility";
import { flameFinal } from "./2c-final";
import { Accumulator, render } from "./3a-binary";
import { transformAllPost } from "./2b-post";
import { transformFinal } from "./2c-final";
import { RendererHistogram } from "./3a-binary";
export class AccumulateLinear extends Accumulator {
class RendererLinear extends RendererHistogram {
render(image: ImageData): void {
const maxValue = Math.max(...this.histogram);
const maxHistogram = Math.max(...this.histogram);
for (var x = 0; x < image.width; x++) {
for (var y = 0; y < image.height; y++) {
const index = histIndex(x, y, image.width);
// Color full black if this pixel is maxValue, white if not part
// of the solution set
const value = (1 - this.histogram[index] / maxValue) * 0xff;
const iIdx = imageIndex(x, y, image.width);
image.data[iIdx + 0] = value;
image.data[iIdx + 1] = value;
image.data[iIdx + 2] = value;
image.data[iIdx + 3] = 0xff - value;
for (var x = 0; x < this.size; x++) {
for (var y = 0; y < this.size; y++) {
const hIndex = histIndex(x, y, this.size);
const iIndex = imageIndex(x, y, this.size);
image.data[iIndex + 0] = 0;
image.data[iIndex + 1] = 0;
image.data[iIndex + 2] = 0;
image.data[iIndex + 3] = (this.histogram[hIndex] / maxHistogram) * 0xff;
}
}
}
}
export function renderLinear(image: ImageData) {
const accumulator = new AccumulateLinear(image.width, image.height);
render(flameFinal, 10, accumulator, image);
export function buildLinear(size: number) {
return new RendererLinear(size, transformAllPost, transformFinal);
}

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@ -1,36 +1,28 @@
import { histIndex, imageIndex } from "./0-utility";
import { flameFinal } from "./2c-final";
import { Accumulator, render } from "./3a-binary";
import { transformAllPost } from "./2b-post";
import { transformFinal } from "./2c-final";
import { RendererHistogram } from "./3a-binary";
export class AccumulateLogarithmic extends Accumulator {
export class RendererLogarithmic extends RendererHistogram {
render(image: ImageData): void {
// Re-scale vibrancy to be log scale...
for (var i = 0; i < this.histogram.length; i++) {
this.histogram[i] = Math.log(this.histogram[i]);
}
// Because log(0) is -Infinity, all the math actually works out.
const histogramLog = this.histogram.map(Math.log);
const histogramLogMax = Math.max(...histogramLog);
// ...but otherwise render the same way as linear
const maxValue = Math.max(...this.histogram);
for (var x = 0; x < image.width; x++) {
for (var y = 0; y < image.height; y++) {
const index = histIndex(x, y, image.width);
// Color full black if this pixel is maxValue, white if not part
// of the solution set
const value = (1 - this.histogram[index] / maxValue) * 0xff;
const iIdx = imageIndex(x, y, image.width);
image.data[iIdx + 0] = value;
image.data[iIdx + 1] = value;
image.data[iIdx + 2] = value;
image.data[iIdx + 3] = 0xff - value;
for (var x = 0; x < this.size; x++) {
for (var y = 0; y < this.size; y++) {
const hIndex = histIndex(x, y, this.size);
const iIndex = imageIndex(x, y, this.size);
image.data[iIndex + 0] = 0;
image.data[iIndex + 1] = 0;
image.data[iIndex + 2] = 0;
image.data[iIndex + 3] =
(histogramLog[hIndex] / histogramLogMax) * 0xff;
}
}
}
}
export function renderLogarithmic(image: ImageData) {
const accumulator = new AccumulateLogarithmic(image.width, image.height);
render(flameFinal, 20, accumulator, image);
export function buildLogarithmic(size: number) {
return new RendererLogarithmic(size, transformAllPost, transformFinal);
}

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@ -0,0 +1,185 @@
import { histIndex, imageIndex, weightedChoice } from "./0-utility";
import {
Coefs,
Variation,
camera,
transform1Weight,
transform2Weight,
transform3Weight,
} from "./2a-variations";
import {
TransformPost,
transform1Post,
transform2Post,
transform3Post,
} from "./2b-post";
import { RendererFinal, transformFinal } from "./2c-final";
export class TransformColor extends TransformPost {
constructor(
coefs: Coefs,
variations: [number, Variation][],
post: Coefs,
public readonly color: number
) {
super(coefs, variations, post);
}
}
export class RendererColor extends RendererFinal {
protected color: number = Math.random();
protected red: number[] = [];
protected green: number[] = [];
protected blue: number[] = [];
protected alpha: number[] = [];
constructor(
size: number,
transforms: [number, TransformColor][],
final: TransformColor,
private readonly palette: number[]
) {
super(size, transforms, final);
for (var i = 0; i < this.size * this.size; i++) {
this.red.push(0);
this.green.push(0);
this.blue.push(0);
this.alpha.push(0);
}
}
colorFromIndex(c: number): [number, number, number] {
// A smarter coloring implementation would interpolate between points in the palette,
// but we'll use a step function here to keep things simple
const colorIndex = Math.floor(c * (this.palette.length / 3)) * 3;
return [
paletteNumber[colorIndex + 0],
paletteNumber[colorIndex + 1],
paletteNumber[colorIndex + 2],
];
}
plotColor(x: number, y: number, color: number): void {
const [finalX, finalY] = this.final.apply(x, y);
const [pixelX, pixelY] = camera(finalX, finalY, this.size);
if (pixelX < 0 || pixelX > this.size || pixelY < 0 || pixelY > this.size) {
return;
}
// NOTE: The reference parameters use a final `symmetry` of 1,
// which effectively disables the final transform's contribution
// to color mixing (see the `color_speed` in flam3).
// While we'd normally want to apply the same color transformation
// like we do in the `run` method, it is skipped here so the output
// image matches the reference image
//
// const finalColor = (color + (final as TransformColor).color) / 2
const finalColor = color;
const [r, g, b] = this.colorFromIndex(finalColor);
const hIndex = histIndex(pixelX, pixelY, this.size);
this.red[hIndex] += r;
this.green[hIndex] += g;
this.blue[hIndex] += b;
this.alpha[hIndex] += 1;
}
run(quality: number): void {
const iterations = quality * this.size * this.size;
for (var i = 0; i < iterations; i++) {
const [_, transform] = weightedChoice(this.transforms);
[this.x, this.y] = transform.apply(this.x, this.y);
this.color = (this.color + (transform as TransformColor).color) / 2;
if (i > 20) {
this.plotColor(this.x, this.y, this.color);
}
}
}
render(image: ImageData): void {
for (var x = 0; x < image.width; x++) {
for (var y = 0; y < image.height; y++) {
const hIndex = histIndex(x, y, image.width);
// NOTE: Calculating the scaling factor for accumulated color value to final
// pixel coloring is very involved (gamma, vibrancy, etc.). This scaling implementation
// is only intended to approximate the reference parameters.
const aScale =
Math.log10(this.alpha[hIndex]) / (this.alpha[hIndex] * 1.5);
const iIdx = imageIndex(x, y, this.size);
image.data[iIdx + 0] = this.red[hIndex] * aScale * 0xff;
image.data[iIdx + 1] = this.green[hIndex] * aScale * 0xff;
image.data[iIdx + 2] = this.blue[hIndex] * aScale * 0xff;
image.data[iIdx + 3] = this.alpha[hIndex] * aScale * 0xff;
}
}
}
}
export const transform1ColorValue = 0;
export const transform1Color = new TransformColor(
transform1Post.coefs,
transform1Post.variations,
transform1Post.post,
transform1ColorValue
);
export const transform2ColorValue = 0.844;
export const transform2Color = new TransformColor(
transform2Post.coefs,
transform2Post.variations,
transform2Post.post,
transform2ColorValue
);
export const transform3ColorValue = 0.349;
export const transform3Color = new TransformColor(
transform3Post.coefs,
transform3Post.variations,
transform3Post.post,
transform3ColorValue
);
export const transformFinalColorValue = 0;
export const transformFinalColor = new TransformColor(
transformFinal.coefs,
transformFinal.variations,
transformFinal.post,
transformFinalColorValue
);
// Copied from the reference parameters
export const paletteHex =
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
// https://stackoverflow.com/a/34356351
export function hexToBytes(hex: string) {
var bytes = [];
for (var i = 0; i < hex.length; i += 2) {
bytes.push(parseInt(hex.substring(i, i + 2), 16));
}
return bytes;
}
export const paletteBytes = hexToBytes(paletteHex);
/**
* Re-scale pixel color values to the range [0, 1], done to match
* 'flam3_get_palette'
*/
export const paletteNumber = paletteBytes.map((b) => b / 0xff);
export function buildColor(size: number) {
return new RendererColor(
size,
[
[transform1Weight, transform1Color],
[transform2Weight, transform2Color],
[transform3Weight, transform3Color],
],
transformFinalColor,
paletteNumber
);
}

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@ -1,86 +0,0 @@
import { weightedChoice } from "./0-utility";
import {
transform1,
transform1Weight,
transform2Weight,
transform3,
transform3Weight,
} from "./2a-variations";
import { transform2Post } from "./2b-post";
import { FlameFinal, transformFinal } from "./2c-final";
import { AccumulateLogarithmic } from "./3c-logarithmic";
export class AccumulateSolo extends AccumulateLogarithmic {
constructor(
width: number,
height: number,
public readonly soloTransform: number
) {
super(width, height);
}
accumulateWithIndex(x: number, y: number, index: number) {
if (index === this.soloTransform) {
super.accumulate(x, y);
}
}
}
export class FlameIndex extends FlameFinal {
protected index: number = -1;
step() {
const [index, transform] = weightedChoice(this.transforms);
this.index = index;
[this.x, this.y] = transform.apply(this.x, this.y);
}
currentWithIndex(): [number, number, number] {
const [finalX, finalY] = this.final.apply(this.x, this.y);
return [finalX, finalY, this.index];
}
}
export function render(
flame: FlameIndex,
quality: number,
accumulator: AccumulateSolo,
image: ImageData
) {
const iterations = quality * image.width * image.height;
for (var i = 0; i < iterations; i++) {
flame.step();
if (i > 20) {
const [flameX, flameY, index] = flame.currentWithIndex();
accumulator.accumulateWithIndex(flameX, flameY, index);
}
}
accumulator.render(image);
}
export const flameIndex = new FlameIndex(
[
[transform1Weight, transform1],
[transform2Weight, transform2Post],
[transform3Weight, transform3],
],
transformFinal
);
export function renderTransform1(image: ImageData) {
const accumulateTransform1 = new AccumulateSolo(image.width, image.height, 0);
render(flameIndex, 10, accumulateTransform1, image);
}
export function renderTransform2(image: ImageData) {
const accumulateTransform2 = new AccumulateSolo(image.width, image.height, 1);
render(flameIndex, 10, accumulateTransform2, image);
}
export function renderTransform3(image: ImageData) {
const accumulateTransform3 = new AccumulateSolo(image.width, image.height, 2);
render(flameIndex, 10, accumulateTransform3, image);
}

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@ -1,175 +0,0 @@
import { colorFromIndex, colorIndex, paletteNumber } from "./0-palette";
import {
histIndex,
imageIndex,
randomBiUnit,
weightedChoice,
} from "./0-utility";
import {
Coefs,
Variation,
camera,
transform1Weight,
transform2Weight,
transform3Weight,
} from "./2a-variations";
import {
TransformPost,
transform1Post,
transform2Post,
transform3Post,
} from "./2b-post";
import { FlameFinal, transformFinal } from "./2c-final";
export class AccumulatorColor {
red: number[] = [];
green: number[] = [];
blue: number[] = [];
alpha: number[] = [];
constructor(public readonly width: number, public readonly height: number) {
for (var i = 0; i < width * height; i++) {
this.red.push(0);
this.green.push(0);
this.blue.push(0);
this.alpha.push(0);
}
}
accumulate(x: number, y: number, c: number) {
const [pixelX, pixelY] = camera(x, y, this.width);
if (
pixelX < 0 ||
pixelX >= this.width ||
pixelY < 0 ||
pixelY >= this.height
) {
return;
}
const hIndex = histIndex(pixelX, pixelY, this.width);
const [r, g, b] = colorFromIndex(c);
this.red[hIndex] += r;
this.green[hIndex] += g;
this.blue[hIndex] += b;
this.alpha[hIndex] += 1;
}
render(image: ImageData) {
for (var x = 0; x < image.width; x++) {
for (var y = 0; y < image.height; y++) {
const hIndex = histIndex(x, y, image.width);
const aNorm = this.alpha[hIndex] ? this.alpha[hIndex] : 1;
const aScale = Math.log10(aNorm) / (aNorm * 1.5);
const iIdx = imageIndex(x, y, this.width);
image.data[iIdx + 0] = this.red[hIndex] * aScale * 0xff;
image.data[iIdx + 1] = this.green[hIndex] * aScale * 0xff;
image.data[iIdx + 2] = this.blue[hIndex] * aScale * 0xff;
image.data[iIdx + 3] = this.alpha[hIndex] * aScale * 0xff;
}
}
}
}
export class TransformColor extends TransformPost {
constructor(
coefs: Coefs,
variations: [number, Variation][],
post: Coefs,
public readonly color: number
) {
super(coefs, variations, post);
}
}
export class FlameColor extends FlameFinal {
protected color: number = Math.random();
constructor(transforms: [number, TransformColor][], final: TransformColor) {
super(transforms, final);
}
step() {
const [_index, transform] = weightedChoice(this.transforms);
[this.x, this.y] = transform.apply(this.x, this.y);
const transformColor = (transform as TransformColor).color;
this.color = (this.color + transformColor) / 2;
}
currentWithColor(): [number, number, number] {
const [finalX, finalY] = this.final.apply(this.x, this.y);
// TODO(bspeice): Why does everyone ignore final coloring?
// In `flam3`, the `color_speed` is set to 0 for the final xform,
// so it doesn't actually get used.
return [finalX, finalY, this.color];
}
}
function render(
flame: FlameColor,
quality: number,
accumulator: AccumulatorColor,
image: ImageData
) {
const iterations = quality * image.width * image.height;
for (var i = 0; i < iterations; i++) {
flame.step();
if (i > 20) {
const [flameX, flameY, color] = flame.currentWithColor();
accumulator.accumulate(flameX, flameY, color);
}
}
accumulator.render(image);
}
export const transform1ColorValue = 0;
export const transform1Color = new TransformColor(
transform1Post.coefs,
transform1Post.variations,
transform1Post.post,
transform1ColorValue
);
export const transform2ColorValue = 0.844;
export const transform2Color = new TransformColor(
transform2Post.coefs,
transform2Post.variations,
transform2Post.post,
transform2ColorValue
);
export const transform3ColorValue = 0.349;
export const transform3Color = new TransformColor(
transform3Post.coefs,
transform3Post.variations,
transform3Post.post,
transform3ColorValue
);
export const transformFinalColorValue = 0;
export const transformFinalColor = new TransformColor(
transformFinal.coefs,
transformFinal.variations,
transformFinal.post,
transformFinalColorValue
);
export const flameColor = new FlameColor(
[
[transform1Weight, transform1Color],
[transform2Weight, transform2Color],
[transform3Weight, transform3Color],
],
transformFinalColor
);
export function renderColor(image: ImageData) {
const accumulator = new AccumulatorColor(image.width, image.height);
render(flameColor, 40, accumulator, image);
}

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@ -0,0 +1,48 @@
import { RendererFlame, Transform, linear } from "./2a-variations";
import { RendererLogarithmic } from "./3c-logarithmic";
export const transformGasket1 = new Transform(
{
a: 0.5,
b: 0,
c: 0,
d: 0,
e: 0.5,
f: 0,
},
[[1, linear]]
);
export const transformGasket2 = new Transform(
{
a: 0.5,
b: 0,
c: 0.5,
d: 0,
e: 0.5,
f: 0,
},
[[1, linear]]
);
export const transformGasket3 = new Transform(
{
a: 0.5,
b: 0,
c: 0,
d: 0,
e: 0.5,
f: 0.5,
},
[[1, linear]]
);
export const transformGasket: [number, Transform][] = [
[1 / 3, transformGasket1],
[1 / 3, transformGasket2],
[1 / 3, transformGasket3],
];
export function buildGasketFlame(size: number) {
return new RendererFlame(size, transformGasket);
}

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@ -0,0 +1,40 @@
import { weightedChoice } from "./0-utility";
import { TransformPost, transformAllPost } from "./2b-post";
import { transformFinal } from "./2c-final";
import { RendererLogarithmic } from "./3c-logarithmic";
export class RendererSolo extends RendererLogarithmic {
constructor(
size: number,
transforms: [number, TransformPost][],
final: TransformPost,
private readonly transformSolo: number
) {
super(size, transforms, final);
}
run(quality: number): void {
const iterations = quality * this.size * this.size;
for (var i = 0; i < iterations; i++) {
const [transformIndex, transform] = weightedChoice(this.transforms);
[this.x, this.y] = transform.apply(this.x, this.y);
// NOTE: Only plot if the current point is from the solo transform
if (i > 20 && transformIndex == this.transformSolo) {
this.plot(this.x, this.y);
}
}
}
}
export function buildSolo1(size: number) {
return new RendererSolo(size, transformAllPost, transformFinal, 0);
}
export function buildSolo2(size: number) {
return new RendererSolo(size, transformAllPost, transformFinal, 1);
}
export function buildSolo3(size: number) {
return new RendererSolo(size, transformAllPost, transformFinal, 2);
}

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@ -1,19 +1,16 @@
import { build } from "vite";
import Blog from "../../../LayoutBlog";
import { Canvas, CanvasRenderer } from "./0-canvas";
import { RendererGasket } from "./1-gasket";
import { rendererBaseline } from "./2a-variations";
import { renderPost } from "./2b-post";
import { renderFinal } from "./2c-final";
import { renderBinary } from "./3a-binary";
import { renderLinear } from "./3b-linear";
import { renderLogarithmic } from "./3c-logarithmic";
import {
renderTransform1,
renderTransform2,
renderTransform3,
} from "./4a-solo";
import { renderColor } from "./4b-color";
import { CanvasRenderer } from "./0-canvas";
import { buildBaseline } from "./2a-variations";
import { buildPost } from "./2b-post";
import { buildFinal } from "./2c-final";
import { buildBinary } from "./3a-binary";
import { buildColor } from "./4-color";
import { buildLinear } from "./3b-linear";
import { buildLogarithmic } from "./3c-logarithmic";
import { buildSolo1, buildSolo2, buildSolo3 } from "./5b-solo";
import { buildGasketFlame } from "./5a-gasket";
export default function () {
const Layout = Blog({
@ -32,27 +29,96 @@ export default function () {
qualityStep: 0.1,
}}
/> */}
{/* <CanvasRenderer
params={{
defaultUrl: "",
size: 400,
renderer: (size) => buildBaseline(size),
qualityMax: 1,
qualityStep: 0.1,
}}
/> */}
{/* <CanvasRenderer
params={{
defaultUrl: "",
size: 400,
renderer: (size) => buildPost(size),
qualityMax: 1,
qualityStep: 0.1
}} /> */}
{/* <CanvasRenderer
params={{
defaultUrl: "",
size: 400,
renderer: (size) => buildFinal(size),
qualityMax: 1,
qualityStep: 0.1,
}} /> */}
{/* <CanvasRenderer
params={{
defaultUrl: "",
size: 400,
renderer: (size) => buildBinary(size),
qualityMax: 1,
qualityStep: 0.1,
}} /> */}
{/* <CanvasRenderer
params={{
defaultUrl: "",
size: 400,
renderer: (size) => buildLinear(size),
qualityMax: 5,
qualityStep: 0.1,
}} /> */}
{/* <CanvasRenderer
params={{
defaultUrl: "",
size: 400,
renderer: (size) => buildLogarithmic(size),
qualityMax: 5,
qualityStep: 0.1,
}} /> */}
{/* <CanvasRenderer
params={{
defaultUrl: "",
size: 400,
renderer: (size) => buildColor(size),
qualityMax: 50,
qualityStep: 0.1,
}} /> */}
{/* <CanvasRenderer
params={{
defaultUrl: "",
size: 400,
renderer: (size) => buildSolo1(size),
qualityMax: 5,
qualityStep: 0.1,
}} /> */}
{/* <CanvasRenderer
params={{
defaultUrl: "",
size: 400,
renderer: (size) => buildSolo2(size),
qualityMax: 5,
qualityStep: 0.1,
}} /> */}
{/* <CanvasRenderer
params={{
defaultUrl: "",
size: 400,
renderer: (size) => buildSolo3(size),
qualityMax: 5,
qualityStep: 0.1,
}} /> */}
<CanvasRenderer
params={{
defaultUrl: "",
size: 400,
renderer: (size) => rendererBaseline(size),
qualityMax: 1,
renderer: (size) => buildGasketFlame(size),
qualityMax: 0.3,
qualityStep: 0.1,
}}
/>
{/* <div>
<Canvas f={gasket} />
<Canvas f={renderBaseline} />
</div>
<div>
<Canvas f={renderPost} />
<Canvas f={renderFinal} />
</div>
<div>
<Canvas f={renderLogarithmic} />
<Canvas f={renderColor} />
</div> */}
</Layout>
);
}