89 lines
2.2 KiB
C++
89 lines
2.2 KiB
C++
#ifndef __FTContour__
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#define __FTContour__
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#include "FTPoint.h"
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#include "FTVector.h"
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#include "FTGL.h"
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/**
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* FTContour class is a container of points that describe a vector font
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* outline. It is used as a container for the output of the bezier curve
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* evaluator in FTVectoriser.
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*
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* @see FTOutlineGlyph
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* @see FTPolyGlyph
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* @see FTPoint
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*/
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class FTGL_EXPORT FTContour
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{
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public:
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/**
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* Constructor
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*
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* @param contour
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* @param pointTags
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* @param numberOfPoints
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*/
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FTContour( FT_Vector* contour, char* pointTags, unsigned int numberOfPoints);
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/**
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* Destructor
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*/
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~FTContour()
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{
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pointList.clear();
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}
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/**
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* Return a point at index.
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*
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* @param index of the point in the curve.
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* @return const point reference
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*/
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const FTPoint& Point( unsigned int index) const { return pointList[index];}
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/**
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* How many points define this contour
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*
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* @return the number of points in this contour
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*/
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size_t PointCount() const { return pointList.size();}
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private:
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/**
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* Add a point to this contour. This function tests for duplicate
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* points.
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*
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* @param point The point to be added to the contour.
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*/
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inline void AddPoint( FTPoint point);
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inline void AddPoint( float x, float y);
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/**
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* De Casteljau (bezier) algorithm contributed by Jed Soane
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* Evaluates a quadratic or conic (second degree) curve
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*/
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inline void evaluateQuadraticCurve();
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/**
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* De Casteljau (bezier) algorithm contributed by Jed Soane
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* Evaluates a cubic (third degree) curve
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*/
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inline void evaluateCubicCurve();
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/**
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* The list of points in this contour
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*/
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typedef FTVector<FTPoint> PointVector;
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PointVector pointList;
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/**
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* 2D array storing values of de Casteljau algorithm.
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*/
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float controlPoints[4][2];
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};
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#endif // __FTContour__
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