function newRect = CenterRectOnPoint(rect, x, y)
%   newRect = CenterRectOnPoint(rect, x, y)
%
%	CenterRectOnPoint offsets the rect to center it around an x and y position.
%   The center of the rect is reported by RectCenter.
%
%	See also: PsychRects, RectCenter

%	9/13/99      Allen Ingling wrote it
%	10/6/99  dgp With permission from Allen, changed name from "PinRect", which 
%                conflicts with Apple's very different PinRect QuickDraw function, 
%                to CenterRectOnPoint. Simplified code.

[cX,cY] = RectCenter(rect);
newRect=OffsetRect(rect,x-cX,y-cY);
