text: /*
   * FTGL - OpenGL font library
   *
   * Copyright (c) 2001-2004 Henry Maddocks <ftgl@opengl.geek.nz>
   * Copyright (c) 2008 Éric Beets <ericbeets@free.fr>
   * Copyright (c) 2008 Sam Hocevar <sam@zoy.org>
   *
   * Permission is hereby granted, free of charge, to any person obtaining
   * a copy of this software and associated documentation files (the
   * "Software"), to deal in the Software without restriction, including
   * without limitation the rights to use, copy, modify, merge, publish,
   * distribute, sublicense, and/or sell copies of the Software, and to
   * permit persons to whom the Software is furnished to do so, subject to
   * the following conditions:
   *
   * The above copyright notice and this permission notice shall be
   * included in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
   * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
   * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
   * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
   * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   */
  
  #ifndef     __FTContour__
  #define     __FTContour__
  
  #include "ftgl.h"
  
  #include "FTVector.h"
  
  #include <memory>
  #include <vector>
  
  
  
  
  /**
   * Contour class is a container of points that describe a vector font
   * outline. It is used as a container for the output of the bezier curve
   * evaluator in FTVectoriser.
   *
   * @see FTOutlineGlyph
   * @see FTPolygonGlyph
   * @see FTPoint
   */
  class FTContour
  {
      public:
          /**
           * Constructor
           *
           * @param contour
           * @param pointTags
           * @param numberOfPoints
           */
          FTContour(FT_Vector* contour, char* pointTags, unsigned int numberOfPoints);
  
          /**
           * Create contour manually. Use AddPoint function.
           */
  		FTContour( bool orientationClockwise );
  
          /**
           * Destructor
           */
          ~FTContour()
          {
              pointList.clear();
          }
  
          /**
           * Return a point at index.
           *
           * @param index of the point in the curve.
           * @return const point reference
           */
          const FTPoint& Point(size_t index) const { return pointList[index]; }
  
  
          /**
           * How many points define this contour
           *
           * @return the number of points in this contour
           */
          size_t PointCount() const { return pointList.size(); }
  
          /**
           * Make sure the glyph has the proper parity and create the front/back
           * outset contour.
           *
           * @param parity  The contour's parity within the glyph.
           * @attention Insted of parity, now there's variable inverse. Whole outset was loaded with good
           * orientation, but sometimes we have to inverse points order, because font format uses other filling orientation.
           */
          void SetParity          ( bool inverse );
          void InverseOrientation ();
  
          bool IsClockwise() { return clockwise;  }
  
          //// FIXME: this should probably go away.
          //void buildFrontOutset(float outset);
          //void buildBackOutset(float outset);
  
          inline bool IsOuterContour() const { return clockwise; }
  
          double GetMinX() const { return minX; }
          double GetMinY() const { return minY; }
          double GetMaxX() const { return maxX; }
          double GetMaxY() const { return maxY; }
  
          bool Intersects( const FTContour* other ) const;
  
  
          /**
           * Add a point to this contour. This function tests for duplicate
           * points. <- Not true
           *
           * @param point The point to be added to the contour.
           */
          inline void AddPoint(FTPoint point);
  
      private:
  
          /**
           * De Casteljau (bezier) algorithm contributed by Jed Soane
           * Evaluates a quadratic or conic (second degree) curve
           */
          inline void evaluateQuadraticCurve(FTPoint, FTPoint, FTPoint);
  
          /**
           * De Casteljau (bezier) algorithm contributed by Jed Soane
           * Evaluates a cubic (third degree) curve
           */
          inline void evaluateCubicCurve(FTPoint, FTPoint, FTPoint, FTPoint);
  
          /**
           * Compute the vector norm
           */
          inline FTGL_DOUBLE NormVector(const FTPoint &v);
  
          /**
           * Compute a rotation matrix from a vector
           */
          inline void RotationMatrix(const FTPoint &a, const FTPoint &b, FTGL_DOUBLE *matRot, FTGL_DOUBLE *invRot);
  
          /**
           * Matrix and vector multiplication
           */
          inline void MultMatrixVect(FTGL_DOUBLE *mat, FTPoint &v);
  
          /**
           * Compute the vector bisecting from a vector 'v' and a distance 'd'
           */
          inline void ComputeBisec(FTPoint &v);
  
          /**
           * Compute the outset point coordinates
           */
          inline FTPoint ComputeOutsetPoint(FTPoint a, FTPoint b, FTPoint c);
  
          /**
           *  The list of points in this contour
           */
          typedef FTVector<FTPoint> PointVector;
          PointVector pointList;
  
          /**
           *  Is this contour clockwise or anti-clockwise?
           */
          bool clockwise;
  
          // Bounding box.
          double minX, minY;
          double maxX, maxY;
  };
  
  
  typedef std::shared_ptr< FTContour > FTContourPtr;      // This should be unique ptr, but this doesn't work properly with visual 110 toolset.
  typedef std::vector< FTContourPtr > ContoursList;
  
  #endif // __FTContour__
  
  