speice.io/blog/2024-11-15-playing-with-fire/2-transforms/FlamePost.tsx

import {useContext, useEffect, useState} from "react";
import {Coefs} from "../src/coefs"
import {Transform} from "../src/transform";
import * as params from "../src/params";
import {PainterContext} from "../src/Canvas"
import {chaosGameFinal, Props as ChaosGameFinalProps} from "./chaosGameFinal"
import {CoefEditor} from "./CoefEditor"
import {applyPost, applyTransform} from "@site/blog/2024-11-15-playing-with-fire/src/applyTransform";

export default function FlamePost() {
    const {width, height, setPainter} = useContext(PainterContext);

    const [xform1CoefsPost, setXform1CoefsPost] = useState<Coefs>(params.xform1CoefsPost);
    const resetXform1CoefsPost = () => setXform1CoefsPost(params.xform1CoefsPost);

    const [xform2CoefsPost, setXform2CoefsPost] = useState<Coefs>(params.xform2CoefsPost);
    const resetXform2CoefsPost = () => setXform2CoefsPost(params.xform2CoefsPost);

    const [xform3CoefsPost, setXform3CoefsPost] = useState<Coefs>(params.xform3CoefsPost);
    const resetXform3CoefsPost = () => setXform1CoefsPost(params.xform3CoefsPost);

    const identityXform: Transform = (x, y) => [x, y];

    const gameParams: ChaosGameFinalProps = {
        width,
        height,
        transforms: [
            [params.xform1Weight, applyPost(xform1CoefsPost, applyTransform(params.xform1Coefs, params.xform1Variations))],
            [params.xform2Weight, applyPost(xform2CoefsPost, applyTransform(params.xform2Coefs, params.xform2Variations))],
            [params.xform3Weight, applyPost(xform3CoefsPost, applyTransform(params.xform3Coefs, params.xform3Variations))],
        ],
        final: identityXform
    }
    useEffect(() => setPainter(chaosGameFinal(gameParams)), [xform1CoefsPost, xform2CoefsPost, xform3CoefsPost]);

    return (
        <>
            <CoefEditor title={"Transform 1 Post"} isPost={true} coefs={xform1CoefsPost} setCoefs={setXform1CoefsPost}
                        resetCoefs={resetXform1CoefsPost}/>
            <CoefEditor title={"Transform 2 Post"} isPost={true} coefs={xform2CoefsPost} setCoefs={setXform2CoefsPost}
                        resetCoefs={resetXform2CoefsPost}/>
            <CoefEditor title={"Transform 3 Post"} isPost={true} coefs={xform3CoefsPost} setCoefs={setXform3CoefsPost}
                        resetCoefs={resetXform3CoefsPost}/>
        </>
    )
}