% Psychtoolbox:PsychRects.
%
% help Psychtoolbox % For an overview, triple-click me & hit enter.
%
%   AdjoinRect          - Move one rect next to another.
%   AlignRect           - Align one rect over another.
%   ArrangeRects        - Arrange array of rects in a pleasing way.
%   CenterRect          - Center the first rect in the second.
%   CenterRectOnPoint   - Center rect around an x,y coordinate.
%   ClipRect            - Return intersection of two rects.
%   InsetRect           - Shrink/expand rect by additive insets.
%   IsEmptyRect         - Returns 1 if empty, returns 0 otherwise.
%   IsInRect            - Is the point inside the rect?
%   OffsetRect          - Shift rect vertically and horizontally.
%   RectBottom          - Return index of yBottom entry of a rect.
%   RectCenter          - Returns the integer x,y coordinates of center.  
%   RectHeight          - Return height of a rect.
%   RectLeft            - Return index of xLeft entry of a rect.
%   RectRight           - Return index of xRight entry of a rect.
%   RectTop             - Return index of yTop entry of a rect.
%   RectWidth           - Return width of a rect.
%   ScaleRect           - Scale a rect by multiplicative factors.
%   SetRect             - Create a rect.
%   UnionRect           - Smallest rect containing two given rects.

% Copyright (c) 1997-8 by David Brainard & Denis Pelli

