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/*
* Transfo.h -- Header for common geometric routines.
*
* Authors : Patrick Lecoanet.
* Creation date :
*
* $Id$
*/
/*
* Copyright (c) 1993 - 1999 CENA, Patrick Lecoanet --
*
* This code is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This code is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this code; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#ifndef _Transfo_h
#define _Transfo_h
#include "Types.h"
#include <math.h>
#include <limits.h>
/*
* First subscript is matrix row, second is matrix column.
* So a[0][1] is upper right corner of matrix a and a[2][0]
* is lower left corner.
*/
typedef struct _RadarTransfo {
RadarReal _[3][2];
} RadarTransfo;
RadarTransfo *
RadarTransfoNew(void);
RadarTransfo *
RadarTransfoDuplicate(RadarTransfo *t);
void
RadarTransfoFree(RadarTransfo *t);
void
RadarPrintTransfo(RadarTransfo *t);
void
RadarTransfoSetIdentity(RadarTransfo *t);
RadarBool
RadarTransfoIsIdentity(RadarTransfo *t);
RadarTransfo *
RadarTransfoCompose(RadarTransfo *res,
RadarTransfo *t1,
RadarTransfo *t2);
RadarTransfo *
RadarTransfoInvert(RadarTransfo *t,
RadarTransfo *inv);
void
RadarTransfoDecompose(RadarTransfo *t,
RadarPoint *scale,
RadarPoint *trans,
RadarReal *rotation,
RadarReal *shearxy);
RadarBool
RadarTransfoEqual(RadarTransfo *t1,
RadarTransfo *t2,
RadarBool include_translation);
RadarBool
RadarTransfoHasShear(RadarTransfo *t);
RadarBool
RadarTransfoIsTranslation(RadarTransfo *t);
RadarPoint *
RadarTransformPoint(RadarTransfo *t,
RadarPoint *p,
RadarPoint *xp);
void
RadarTransformPoints(RadarTransfo *t,
RadarPoint *p,
RadarPoint *xp,
int num);
RadarTransfo *
RadarTranslate(RadarTransfo *t,
RadarReal delta_x,
RadarReal delta_y);
RadarTransfo *
RadarSetTranslation(RadarTransfo *t,
RadarReal delta_x,
RadarReal delta_y);
RadarTransfo *
RadarScale(RadarTransfo *t,
RadarReal scale_x,
RadarReal scale_y);
RadarTransfo *
RadarRotateRad(RadarTransfo *t,
RadarReal angle);
RadarTransfo *
RadarRotateDeg(RadarTransfo *t,
RadarReal angle);
#endif /* _Transfo_h */
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