/**
* Cursor moving event accured.
*
* @param gl OpenGL drawing context
* @param glu GLU library. Used to convert coordinates from window coordinate system to OpenGL.
*/
public void move(GL2 gl, GLU glu) {
if (lensMovingCursorStartPosition != null && lensMovingCursorEndPosition != null) {
double[] start = DrawingUtils.window2world(gl, glu, this.lensMovingCursorStartPosition);
double[] end = DrawingUtils.window2world(gl, glu, this.lensMovingCursorEndPosition);
double moveX = end[0] - start[0];
double moveY = end[1] - start[1];
keepLensInsideWindow(moveX, moveY);
lensMovingCursorStartPosition = null;
}
}
