100 lines
1.9 KiB
C++
100 lines
1.9 KiB
C++
#include "FTOutlineGlyph.h"
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#include "FTVectoriser.h"
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#include "FTGL.h"
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FTOutlineGlyph::FTOutlineGlyph( FT_Glyph glyph)
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: FTGlyph(),
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vectoriser(0),
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numPoints(0),
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numContours(0),
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contourLength(0),
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data(0),
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glList(0)
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{
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if( ft_glyph_format_outline != glyph->format)
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{
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FT_Done_Glyph( glyph);
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return;
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}
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advance = glyph->advance.x >> 16;
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vectoriser = new FTVectoriser( glyph);
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vectoriser->Process();
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numContours = vectoriser->contours();
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if (numContours==0)
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{
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FT_Done_Glyph( glyph);
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return;
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}
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contourLength = new int[ numContours];
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memset(contourLength,0,sizeof(int)*numContours);
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for( int cn = 0; cn < numContours; ++cn)
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{
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contourLength[cn] = vectoriser->contourSize( cn);
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}
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numPoints = vectoriser->points();
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data = new double[ numPoints * 3];
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for( int cp = 0; cp < numPoints * 3; ++cp)
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{
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data[cp]=0.0;
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}
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vectoriser->MakeOutline( data);
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vectoriser=0;
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if ( ( numContours < 1) || ( numPoints < 3))
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{
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FT_Done_Glyph( glyph);
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return;
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}
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glList = glGenLists(1);
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int d = 0;
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glNewList( glList, GL_COMPILE);
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for( int c = 0; c < numContours; ++c)
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{
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glBegin( GL_LINE_LOOP);
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for( int p = 0; p < ( contourLength[c]); ++p)
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{
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glVertex2dv( data + d);
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d += 3;
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}
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glEnd();
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}
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glEndList();
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// discard glyph image (bitmap or not)
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FT_Done_Glyph( glyph); // Why does this have to be HERE
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}
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FTOutlineGlyph::~FTOutlineGlyph()
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{
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delete [] data;
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delete [] contourLength;
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}
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float FTOutlineGlyph::Render( const FT_Vector& pen)
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{
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if( glList)
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{
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glTranslatef( pen.x, pen.y, 0);
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glCallList( glList);
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glTranslatef( -pen.x, -pen.y, 0);
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}
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return advance;
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}
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