70 lines
1.7 KiB
C++
70 lines
1.7 KiB
C++
#ifndef __FTExtrdGlyph__
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#define __FTExtrdGlyph__
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#include FT_GLYPH_H
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#include "FTGL.h"
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#include "FTGlyph.h"
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class FTVectoriser;
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/**
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* FTExtrdGlyph is a specialisation of FTGlyph for creating tessellated
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* extruded polygon glyphs.
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*
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* @see FTGlyphContainer
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* @see FTVectoriser
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*
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*/
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class FTGL_EXPORT FTExtrdGlyph : public FTGlyph
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{
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public:
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/**
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* Constructor. Sets the Error to Invalid_Outline if the glyph isn't an outline.
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*
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* @param glyph The Freetype glyph to be processed
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* @param depth The distance along the z axis to extrude the glyph
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* @param useDisplayList Enable or disable the use of Display Lists for this glyph
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* <code>true</code> turns ON display lists.
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* <code>false</code> turns OFF display lists.
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*/
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FTExtrdGlyph( FT_GlyphSlot glyph, float depth, bool useDisplayList);
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/**
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* Destructor
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*/
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virtual ~FTExtrdGlyph();
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/**
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* Renders this glyph at the current pen position.
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*
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* @param pen The current pen position.
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* @return The advance distance for this glyph.
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*/
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virtual const FTPoint& Render( const FTPoint& pen);
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private:
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/**
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* Calculate the normal vector to 2 points. This is 2D and ignores
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* the z component. The normal will be normalised
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*
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* @param a
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* @param b
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* @return
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*/
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FTPoint GetNormal( const FTPoint &a, const FTPoint &b);
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/**
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* OpenGL display list
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*/
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GLuint glList;
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};
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#endif // __FTExtrdGlyph__
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