78 lines
1.8 KiB
C++
78 lines
1.8 KiB
C++
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#include "FTPolyGlyph.h"
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#include "FTVectoriser.h"
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FTPolyGlyph::FTPolyGlyph( FT_GlyphSlot glyph, bool useDisplayList)
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: FTGlyph( glyph),
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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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err = 0x14; // Invalid_Outline
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return;
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}
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FTVectoriser vectoriser( glyph);
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if(( vectoriser.ContourCount() < 1) || ( vectoriser.PointCount() < 3))
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{
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return;
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}
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unsigned int horizontalTextureScale = glyph->face->size->metrics.x_ppem * 64;
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unsigned int verticalTextureScale = glyph->face->size->metrics.y_ppem * 64;
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vectoriser.MakeMesh( 1.0);
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if( useDisplayList)
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{
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glList = glGenLists( 1);
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glNewList( glList, GL_COMPILE);
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}
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const FTMesh* mesh = vectoriser.GetMesh();
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for( unsigned int index = 0; index < mesh->TesselationCount(); ++index)
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{
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const FTTesselation* subMesh = mesh->Tesselation( index);
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unsigned int polyonType = subMesh->PolygonType();
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glBegin( polyonType);
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for( unsigned int pointIndex = 0; pointIndex < subMesh->PointCount(); ++pointIndex)
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{
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FTPoint point = subMesh->Point(pointIndex);
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glTexCoord2f( point.X() / horizontalTextureScale,
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point.Y() / verticalTextureScale);
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glVertex3f( point.X() / 64.0f,
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point.Y() / 64.0f,
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0.0f);
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}
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glEnd();
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}
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if(useDisplayList)
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{
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glEndList();
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}
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}
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FTPolyGlyph::~FTPolyGlyph()
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{
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glDeleteLists( glList, 1);
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}
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const FTPoint& FTPolyGlyph::Render( const FTPoint& pen)
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{
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glTranslatef( pen.X(), pen.Y(), 0.0f);
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if( glList)
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{
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glCallList( glList);
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}
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return advance;
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}
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