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function newRect = CenterRectOnPointd(rect,x,y)
% newRect = CenterRectOnPointd(rect,x,y)
%
% CenterRectOnPointd offsets the rect to center it around an x and y position.
% The center of the rect is reported by RectCenterd. This is the same as
% CenterRectOnPoint, just that it returns floating point results instead of
% results that are rounded to integral pixel positions.
%
% See also PsychRects, RectCenter, RectCenterd
% 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.
% 5/18/08 mk Vectorized, ans uses RectCenterd for non-integral results.
[cX,cY] = RectCenterd(rect);
newRect=OffsetRect(rect,x-cX,y-cY);
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