Function registerMouseWheel

source/zoom.js:19–27

(zoomer)

};

export const registerMouseWheel = (zoomer) => {
  onkeydown("z", () => (zoomer.smoothMode = !zoomer.smoothMode));
  onkeydown("r", () => (zoomer.desiredSpeed = 0.0));

  on.wheel((e) => {
    const dspeed = Math.sign(e.deltaY);
    zoomer.desiredSpeed += dspeed * (zoomer.smoothMode ? 0.1 : 3);
  });
};

export const updateZoom = (context, queue, zoomer, world, colours) => {
  const missingSpeed = zoomer.desiredSpeed - zoomer.speed;