hydra-mouse.js

{
    const getHydra = function () {
        const whereami = window.location?.href?.includes("hydra.ojack.xyz")
            ? "editor"
            : window.atom?.packages
            ? "atom"
            : "idk";
        if (whereami === "editor") {
            return window.hydraSynth;
        }
        if (whereami === "atom") {
            return global.atom.packages.loadedPackages["atom-hydra"]
                .mainModule.main.hydra;
        }
        let _h = [
            window.hydraSynth,
            window._hydra,
            window.hydra,
            window.h,
            window.H,
            window.hy
        ].find(h => h?.regl);
        return _h;
    };
    window._hydra = getHydra();
    window._hydraScope = _hydra.sandbox.makeGlobal ? window : _hydra.synth;
}

function Mouse(canvas) {
    this.x = 0;
    this.y = 0;
    this.ax = 0;
    this.ay = 0;
    this.cx = 0;
    this.cy = 0;
    this.rx = 0;
    this.ry = 0;
    this.crx = 0;
    this.cry = 0;
    this.posx = 0;
    this.posy = 0;
    this.cposx = 0;
    this.cposy = 0;
    this.canvas = canvas;
    let self = this;

    this.handlePointerMove = function (ev) {
        const bound = self.canvas.getBoundingClientRect();
        self.x = ev.clientX;
        self.y = ev.clientY;
        self.ax = ev.pageX;
        self.ay = ev.pageY;
        self.cx = self.ax - bound.left;
        self.cy = self.ay - bound.top;
        self.rx = self.x / window.innerWidth;
        self.ry = self.y / window.innerHeight;
        self.crx = self.cx / bound.width;
        self.cry = self.cy / bound.height;
        self.posx = -self.x / window.innerWidth + 0.5;
        self.posy = -self.y / window.innerHeight + 0.5;
        self.cposx = -self.cx / bound.width + 0.5;
        self.cposy = -self.cy / bound.height + 0.5;
    };

    if (window.mouse.handlePointerMove)
        window.removeEventListener(
            "pointermove",
            window.mouse.handlePointerMove
        );
    window.addEventListener("pointermove", this.handlePointerMove);
}

_hydraScope.mouse = new Mouse(window._hydra.canvas);