public double[] isSelected(int[] screenCoordTest, AbstractDrawer draw) {
for (int i = 0; i < XY.length; i++) {
int[] screenCoord = draw.project(XY[i]);
if ((screenCoord[0] + note_precision > screenCoordTest[0])
&& (screenCoord[0] - note_precision < screenCoordTest[0])
&& (screenCoord[1] + note_precision > screenCoordTest[1])
&& (screenCoord[1] - note_precision < screenCoordTest[1])) return XY[i];
}
return null;
}
