kc3-lang/ftgl/include/FTVectoriser.h

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• Author : henry
  Date : 2001-08-02 21:52:58
  Hash : ec4a06b7
  Message : Made the ftPoint struct an external class and added some helper functions eg operator != Got rid of ftLoop, it's not needed now that I've tidied up the curve parsing code (which fixed the Vivaldi Q bug) Minor code tidy ups.

• include/FTVectoriser.h

• #ifndef		__FTVectoriser__
  #define		__FTVectoriser__
  
  #include <vector>
  
  #include <ft2build.h>
  #include FT_FREETYPE_H
  #include FT_GLYPH_H
  
  #include "FTGlyph.h"
  
  
  // template < typename T>
  // class ftLoop
  // {
  // 	public:	
  // 		ftLoop();
  // 		~ftLoop()
  // 		{
  // 			list.clear();
  // 		}
  // 		
  // 		T& operator [] (unsigned int i)
  // 		{
  // 			int x = i;
  // 			if( i < 0)
  // 				x = i + list.size();
  // 			
  // 			if( i > list.size())
  // 				x = i % list.size();
  // 			
  // 			return list[x];
  // 		}
  // 		
  // 		void push_back( T t)
  // 		{
  // 			list.push_back(t);
  // 		}
  // 		
  // 	private:
  // 		vector<T> list;
  // };
  
  
  class ftPoint
  {
  	public:
  		ftPoint()
  		: x(0), y(0), z(0){}
  		
  		ftPoint( float X, float Y, float Z)
  		: x(X), y(Y), z(Z){}
  		
  		friend bool operator == (const ftPoint &a, const ftPoint &b)
  		{
  			return((a.x == b.x) && (a.y == b.y) && (a.z == b.z));
  		}
  
  		friend bool operator != (const ftPoint &a, const ftPoint &b)
  		{
  			return((a.x != b.x) || (a.y != b.y) || (a.z != b.z));
  		}
  		
  		float x, y, z;
  		
  	private:
  };
  
  
  class FTContour
  {
  	public:
  		// methods
  		FTContour();
  		~FTContour();
  	
  		void AddPoint( int x, int y);
  		
  		int size() const { return pointList.size();}
  
  		// attributes
  		vector< ftPoint> pointList;
  		float ctrlPtArray[4][2];
  		
  	private:
  		// methods
  
  		// attributes
  };
  
  
  class FTVectoriser
  {
  	public:
  		// methods
  		FTVectoriser( FT_Glyph glyph);
  		virtual ~FTVectoriser();
  		
  		bool Ingest();
  		void Output( double* d);
  		int points();
  		int contours() const { return contourList.size();}
  		int contourSize( int c) const { return contourList[c]->size();}
  		
  		// attributes
  		int contourFlag; 
  		
  	private:
  		// methods
  		int Conic( int index, int first, int last);
  		int Cubic( int index, int first, int last);
  		void deCasteljau( GLfloat t, int n);
  		void evaluateCurve( int n);
  
  		// attributes
  		vector< FTContour*> contourList;
  		float ctrlPtArray[4][2]; // Magic numbers
  			
  		FTContour* contour;
  
  		FT_Outline ftOutline;
  		
  		 // Magic numbers -- #define MAX_DEG 4
  		float bValues[4][4][2];	//3D array storing values
                                          	//of de Casteljau algorithm.
  
  
  };
  
  
  #endif	//	__FTVectoriser__