docs: private int[] toScreen(float x, float y) {
  		// |------ 1024 ------|
  		//dim.x:spanX=input.x:output.x -> output.x = spanX*input.x/dim.x*
  		int[] ret = new int[2];
  //		ret[0] = Math.round(this.zoomInv*xSpan*(x-deltaX+paddingPixels)/dim.width);
  //		ret[1] = Math.round(this.zoomInv*ySpan*(y-deltaY+paddingPixels)/dim.height);
  		ret[0] = Math.round(this.zoomInv*(x-deltaX)+paddingPixels);
  		ret[1] = Math.round(this.zoomInv*(y-deltaY)+paddingPixels);
  		return ret;
  	}