scroll method

void scroll(
  1. double scrollX,
  2. double scrollY
)

Implementation

void scroll( double scrollX, double scrollY ){
	if( _beginScroll ){
		_offsetX = _scrollOffX + (scrollX - _scrollPosX);
		_offsetY = _scrollOffY + (scrollY - _scrollPosY);
	} else {
		_offsetX += scrollX;
		_offsetY += scrollY;
	}
}