kc3-lang/ftgl/src/FTPoint.cpp

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• Author : sammy
  Date : 2008-04-21 21:48:03
  Hash : 7e74380f
  Message : * Inset/outset contour support for fonts, by Eric Beets. For now, only contours with exactly the same number of points are generated.

• src/FTPoint.cpp

• /*
   * 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.
   */
  
  #include "config.h"
  
  #include "FTPoint.h"
  
  #include <math.h>
  
  bool operator == ( const FTPoint &a, const FTPoint &b) 
  {
      return((a.values[0] == b.values[0]) && (a.values[1] == b.values[1]) && (a.values[2] == b.values[2]));
  }
  
  bool operator != ( const FTPoint &a, const FTPoint &b) 
  {
      return((a.values[0] != b.values[0]) || (a.values[1] != b.values[1]) || (a.values[2] != b.values[2]));
  }
  
  
  FTPoint operator*( double multiplier, FTPoint& point)
  {
      return point * multiplier;
  }
          
  FTPoint FTPoint::GetNormal(const FTPoint &a, const FTPoint &b)
  {
      float vectorX = a.X() - b.X();
      float vectorY = a.Y() - b.Y();
  
      float length = sqrt(vectorX * vectorX + vectorY * vectorY);
  
      if(length > 0.01f)
      {
          length = 1 / length;
      }
      else
      {
          length = 0.0f;
      }
  
      return FTPoint(-vectorY * length,
                      vectorX * length,
                      0.0f);
  }