mathutils.h

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/*
 *
 * mathutils.h
 *
   Copyright (C) 2006 Michael H. Overlin

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program 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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   
   Contact at [e-mail]
 */

#ifndef MATHUTILS_H
#define MATHUTILS_H

#include "types.h"
#include <windows.h>

#define MICROMETERS_PER_INCH	( (double) 25400.0 )
#define MM_PER_INCH				( MICROMETERS_PER_INCH / 1000 )
#define INCHES_PER_MM			( 1.0 / MM_PER_INCH )
#define INCHES_PER_MICROMETER	( 1.0 / MICROMETERS_PER_INCH )
#define AREA(sz)				( (sz).cx * (sz).cy )
#define RW(r)					( (r).right - (r).left )
#define RH(r)					( (r).bottom - (r).top )
#define RoundToLong(x)			( (LONG) ((x) + 0.5) )



void AddToPoint(IN OUT POINTD& ptd, IN const POINTD& ptdSrc);
void CenterInRect(IN OUT POINTD& ptd, IN const RECTD& rd);
void CenterInRect(IN OUT POINT& pt, IN const RECT& r);
void CenterInRect(IN OUT RECT& rOut, IN const RECT& rSrc);
BOOL EqualPt(const POINT& pt1, const POINT& pt2);
BOOL EqualRect(IN const RECTD& rd1, IN const RECTD& rd2);
BOOL EqualSz(const SIZE& sz1, const SIZE& sz2);
double GetMaxIsoScale(const SIZED &szdFrame, const SIZED& szdImage) ;
BOOL IsRectEmpty(IN const RECTD& rd);
BOOL IntersectRect(OUT RECTD& rd, IN const RECTD& rd2, IN const RECTD& rd3);
::LandscapeRot::LandscapeRot LandscapeRotateBack(::LandscapeRot::LandscapeRot rotDir) ;
void LandscapeRotate(OUT RECT& rDest, IN const RECT& rSrc, IN LandscapeRot::LandscapeRot rotDir) ;
inline void LandscapeRotate(IN OUT RECT& r, IN ::LandscapeRot::LandscapeRot rotDir) { ::LandscapeRotate(r, r, rotDir); }
void LandscapeRotate(OUT RECTD& rdDest, IN const RECTD& rdSrc, IN LandscapeRot::LandscapeRot rotDir) ;
inline void LandscapeRotate(IN OUT RECTD& rd, IN ::LandscapeRot::LandscapeRot rotDir) { ::LandscapeRotate(rd, rd, rotDir); }
BOOL OffsetRect(OUT RECTD& rd, IN double dx, IN double dy);
BOOL PtInRect(IN const RECTD& rd, IN const POINTD& ptd);
void SetRect(OUT RECTD& rdDest, IN const POINTD& ptdSrc, IN const SIZED& szdSrc);
void SetRect(OUT RECT& rDest, IN const POINT& ptTopLeft, IN const SIZE& sz);
void SetRect(OUT RECTD& rdDest, IN double dLeft, double dTop, double dRight, double dBottom);
void UnionRect(OUT RECTD& rdDest, IN const RECTD& rdSrc1, IN const RECTD& rdSrc2); // DEST AND A SRC CAN BE SAME
void Reflect(OUT RECT& rDest, IN const RECT& rSrc);
inline void Reflect(IN OUT RECT& r) { ::Reflect(r, r); }
void Reflect(OUT RECTD& rdDest, IN const RECTD& rdSrc);
inline void Reflect(IN OUT RECTD& rd) { ::Reflect(rd, rd); }
void Reflect(OUT POINT& ptDest, IN const POINT& ptSrc);
inline void Reflect(IN OUT POINT&pt) { ::Reflect(pt, pt); }
void Reflect(OUT POINTD& ptdDest, IN const POINTD& ptdSrc);
inline void Reflect(IN OUT POINTD& ptd) { ::Reflect(ptd, ptd); }

void RoundMult(OUT POINT& pt, IN const POINTD& pt1, IN const POINTD& pt2) ;
void RoundMult(OUT RECT& rl, IN const RECTD& rd, IN const POINTD& ptd) ;
LONG RoundUp(double d) ;

#endif