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/*
* PsychRects.c
*
* PLATFORMS:
*
* All.
*
* AUTHORS:
*
* Allen Ingling awi Allen.Ingling@nyu.edu
* Mario Kleiner mk mario.kleiner.de@gmail.com
*
* HISTORY:
*
* 02/11/03 awi Wrote it.
* 01/20/09 mk Modify behaviour of PsychGetCenterFromRectAbs(): No longer floor() the size of the rectangle
* before calculation of center: This removes information about rects with fractional locations
* for no reason. Function is currently used by FillOval, FrameOval, Frame/Fill/xxxArc(), where
* it has harmful effect on accuracy and consistency.
*
* DESCRIPTION:
*
* Helper to deal with common operations on rectangles.
*/
//begin include once
#ifndef PSYCH_IS_INCLUDED_PsychRects
#define PSYCH_IS_INCLUDED_PsychRects
//includes
#include "Screen.h"
#define kPsychLeft 0
#define kPsychTop 1
#define kPsychRight 2
#define kPsychBottom 3
typedef double PsychRectType[4];
//Accessors for PsychRectType
void PsychMakeRect(double *psychRect, double left, double top, double right, double bottom);
psych_bool IsPsychRectEmpty(PsychRectType rect);
psych_bool ValidatePsychRect(PsychRectType rect);
double PsychGetWidthFromRect(const double *rect);
double PsychGetHeightFromRect(const double *rect);
void PsychCenterRect(const double *innerRect, const double *outerRect, double *newRect);
void PsychCenterRectInRect(const double *innerRect, const double *outerRect, double *newRect);
void PsychCopyRect(double *toRect, const double *fromRect);
void PsychGetCenterFromRectAbsolute(const double *rect, double *rectCenterX, double *rectCenterY);
void PsychGetManhattanDistance(double x1, double y1, double x2, double y2, double *deltaX, double *deltaY);
void PsychNormalizeRect(double *rect, double *normRect);
void PsychInvertRectY(double *rectB, double *rectA, double *frameA);
psych_bool PsychMatchRect(double *rectA, double *RectB);
void PsychFindEnclosingTextureRect(double *rectA, double *enclosingRect);
//end include once
#endif
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