Function getMouseInfo

src/events/pointer.js:863–871

(canvas, sx, sy, evt)

  };

  function getMouseInfo(canvas, sx, sy, evt) {
    const rect = canvas.getBoundingClientRect();
    return {
      x: (evt.clientX - rect.left) / sx,
      y: (evt.clientY - rect.top) / sy,
      winX: evt.clientX,
      winY: evt.clientY
    };
  }

  function getTouchInfo(canvas, sx, sy, touch) {
    const rect = canvas.getBoundingClientRect();