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/*
* gltt graphics library
* Copyright (C) 1998 Stephane Rehel
*
* This library 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 library 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 library; if not, write to the Free
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __FTGlyphVectorizer_h
#define __FTGlyphVectorizer_h
#ifndef __GLTTboolean_h
#include "GLTTboolean.h"
#endif
struct TT_Outline_;
typedef struct TT_Outline_ TT_Outline;
class FTGlyph;
/////////////////////////////////////////////////////////////////////////////
class FTGlyphVectorizer
{
public:
struct POINT
{
double x, y;
void* data;
};
class Contour
{
public:
int max_points;
POINT* points;
int nPoints;
GLTTboolean clockwise;
double area;
double x_min, x_max;
double y_min, y_max;
Contour()
{
clockwise= GLTT_FALSE;
nPoints= 0;
points= 0;
max_points= 0;
area= 0.;
x_min= y_min= 1e20;
x_max= y_max=-1e20;
}
~Contour()
{
delete points;
points= 0;
nPoints= 0;
}
GLTTboolean exterior() const
{
return clockwise;
}
private:
void add_point( double x, double y );
friend FTGlyphVectorizer;
};
protected:
FTGlyph* glyph;
TT_Outline* outline;
// needed distance between two bezier curve evaluations (in pixels)
double precision;
Contour** contours;
int nContours;
public:
FTGlyphVectorizer();
virtual ~FTGlyphVectorizer();
void destroy();
GLTTboolean init( FTGlyph* _glyph );
void setPrecision( double _precision );
FTGlyph* getGlyph() const
{
return glyph;
}
GLTTboolean vectorize();
int getNContours() const
{
return nContours;
}
// 0 <= c < nContours
Contour* getContour( int c ) const
{
if( c < 0 || c > nContours || contours == 0 )
return 0;
return contours[c];
}
double getBearingX() const;
double getBearingY() const;
double getAdvance() const;
private:
GLTTboolean vectorizeContour( int c );
void add_point( int c, double x, double y );
void sortContours();
};
/////////////////////////////////////////////////////////////////////////////
#endif // ifndef __FTGlyphVectorizer_h
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