kc3-lang/ftgl/src/FTGL/FTPoint.h

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• Hash : 80e809f1
  Author :
  Date : 2008-05-02T07:21:09
  

  * Fix brown-paper-bag bug in the vector product computation: the indices were completely messed up. Thanks to valgrind for spotting it for me.

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• src/FTGL/FTPoint.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.
   */
  
  #ifndef __ftgl__
  #   warning This header is deprecated. Please use <FTGL/ftgl.h> from now.
  #   include <FTGL/ftgl.h>
  #endif
  
  #ifndef __FTPoint__
  #define __FTPoint__
  
  #ifdef __cplusplus
  
  
  /**
   * FTPoint class is a basic 3-dimensional point or vector.
   */
  class FTGL_EXPORT FTPoint
  {
      public:
          /**
           * Default constructor. Point is set to zero.
           */
          inline FTPoint()
          {
              values[0] = 0;
              values[1] = 0;
              values[2] = 0;
          }
  
          /**
           * Constructor. Z coordinate is set to zero if unspecified.
           *
           * @param x First component
           * @param y Second component
           * @param z Third component
           */
          inline FTPoint(const FTGL_DOUBLE x, const FTGL_DOUBLE y,
                         const FTGL_DOUBLE z = 0)
          {
              values[0] = x;
              values[1] = y;
              values[2] = z;
          }
  
          /**
           * Constructor. This converts an FT_Vector to an FTPoint
           *
           * @param ft_vector A freetype vector
           */
          inline FTPoint(const FT_Vector& ft_vector)
          {
              values[0] = ft_vector.x;
              values[1] = ft_vector.y;
              values[2] = 0;
          }
  
          /**
           * Normalise a point's coordinates. If the coordinates are zero,
           * the point is left untouched.
           *
           * @return A vector of norm one.
           */
          FTPoint Normalise();
  
  
          /**
           * Operator += In Place Addition.
           *
           * @param point
           * @return this plus point.
           */
          inline FTPoint& operator += (const FTPoint& point)
          {
              values[0] += point.values[0];
              values[1] += point.values[1];
              values[2] += point.values[2];
  
              return *this;
          }
  
          /**
           * Operator +
           *
           * @param point
           * @return this plus point.
           */
          inline FTPoint operator + (const FTPoint& point)
          {
              FTPoint temp;
              temp.values[0] = values[0] + point.values[0];
              temp.values[1] = values[1] + point.values[1];
              temp.values[2] = values[2] + point.values[2];
  
              return temp;
          }
  
           /**
           * Operator -= In Place Substraction.
           *
           * @param point
           * @return this minus point.
           */
          inline FTPoint& operator -= (const FTPoint& point)
          {
              values[0] -= point.values[0];
              values[1] -= point.values[1];
              values[2] -= point.values[2];
  
              return *this;
          }
  
          /**
           * Operator -
           *
           * @param point
           * @return this minus point.
           */
          inline FTPoint operator - (const FTPoint& point)
          {
              FTPoint temp;
              temp.values[0] = values[0] - point.values[0];
              temp.values[1] = values[1] - point.values[1];
              temp.values[2] = values[2] - point.values[2];
  
              return temp;
          }
  
          /**
           * Operator *
           *
           * @param multiplier
           * @return <code>this</code> multiplied by <code>multiplier</code>.
           */
          inline FTPoint operator * (double multiplier)
          {
              FTPoint temp;
              temp.values[0] = values[0] * multiplier;
              temp.values[1] = values[1] * multiplier;
              temp.values[2] = values[2] * multiplier;
  
              return temp;
          }
  
  
          /**
           * Operator *
           *
           * @param point
           * @param multiplier
           * @return <code>multiplier</code> multiplied by <code>point</code>.
           */
          inline friend FTPoint operator * (double multiplier, FTPoint& point)
          {
              return point * multiplier;
          }
  
  
          /**
           * Operator ^  Vector product
           *
           * @param point Second point
           * @return this vector point.
           */
          inline FTPoint operator ^ (const FTPoint& point)
          {
              FTPoint temp;
              temp.values[0] = values[1] * point.values[2]
                                - values[2] * point.values[1];
              temp.values[1] = values[2] * point.values[0]
                                - values[0] * point.values[2];
              temp.values[2] = values[0] * point.values[1]
                                - values[1] * point.values[0];
              return temp;
          }
  
  
          /**
           * Operator == Tests for equality
           *
           * @param a
           * @param b
           * @return true if a & b are equal
           */
          friend bool operator == (const FTPoint &a, const FTPoint &b);
  
  
          /**
           * Operator != Tests for non equality
           *
           * @param a
           * @param b
           * @return true if a & b are not equal
           */
          friend bool operator != (const FTPoint &a, const FTPoint &b);
  
  
          /**
           * Cast to FTGL_DOUBLE*
           */
          inline operator const FTGL_DOUBLE*() const
          {
              return values;
          }
  
  
          /**
           * Setters
           */
          inline void X(FTGL_DOUBLE x) { values[0] = x; };
          inline void Y(FTGL_DOUBLE y) { values[1] = y; };
          inline void Z(FTGL_DOUBLE z) { values[2] = z; };
  
  
          /**
           * Getters
           */
          inline FTGL_DOUBLE X() const { return values[0]; };
          inline FTGL_DOUBLE Y() const { return values[1]; };
          inline FTGL_DOUBLE Z() const { return values[2]; };
  
      private:
          /**
           * The point data
           */
          FTGL_DOUBLE values[3];
  };
  
  #endif //__cplusplus
  
  #endif  //  __FTPoint__
  
  

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