kc3-lang/ftgl/src/FTPolyGlyph.cpp

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• Hash : ef3a8c03
  Author :
  Date : 2004-09-30T08:15:43
  

  Code to turn off display lists.

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• src/FTPolyGlyph.cpp

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

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