pointInCanvas = (canvasData, x, y) => ({
	x: (x - canvasData.position.x) / canvasData.scale,
	y: (y - canvasData.position.y) / canvasData.scale
})
Get point in canvas given the scale and position of the canvas
@param {{position:{x:number, y:number}, scale:number}} canvasData
@param {number} x, @param {number} y