kc3-lang/ftgl/include/FTContour.h

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• Hash : 141112c4
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  Date : 2008-04-12T22:44:48
  

  * Add licensing information to all files in the library.

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• include/FTContour.h

• /*
   * FTGL - OpenGL font library
   *
   * Copyright (c) 2001-2004 Henry Maddocks <ftgl@opengl.geek.nz>
   *
   * 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.
   *
   * Alternatively, you can redistribute and/or modify this software under
   * the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License,
   * or (at your option) any later version.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this software; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA.
   */
  
  #ifndef     __FTContour__
  #define     __FTContour__
  
  #include "FTPoint.h"
  #include "FTVector.h"
  #include "FTGL.h"
  
  
  /**
   * FTContour 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 FTPolyGlyph
   * @see FTPoint
   */
  class FTGL_EXPORT FTContour
  {
      public:
          /**
           * Constructor
           *
           * @param contour
           * @param pointTags
           * @param numberOfPoints
           */
          FTContour( FT_Vector* contour, char* pointTags, unsigned int numberOfPoints);
  
          /**
           * Destructor
           */
          ~FTContour()
          {
              pointList.clear();
          }
          
          /**
           * Return a point at index.
           *
           * @param index of the point in the curve.
           * @return const point reference
           */
          const FTPoint& Point( unsigned int 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();}
  
      private:
          /**
           * Add a point to this contour. This function tests for duplicate
           * points.
           *
           * @param point The point to be added to the contour.
           */
          inline void AddPoint( FTPoint point);
          
          inline void AddPoint( float x, float y);
          
          /**
           * De Casteljau (bezier) algorithm contributed by Jed Soane
           * Evaluates a quadratic or conic (second degree) curve
           */
          inline void evaluateQuadraticCurve();
  
          /**
           * De Casteljau (bezier) algorithm contributed by Jed Soane
           * Evaluates a cubic (third degree) curve
           */
          inline void evaluateCubicCurve();
  
          /**
           *  The list of points in this contour
           */
          typedef FTVector<FTPoint> PointVector;
          PointVector pointList;
          
          /**
           * 2D array storing values of de Casteljau algorithm.
           */
          float controlPoints[4][2];
  };
  
  #endif // __FTContour__
  

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