kc3-lang/ftgl/src/FTBBox.h

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• Hash : 1f4a94f8
  Author :
  Date : 2008-04-29T14:39:28
  

  * Since the MIT license is LGPL-compatible, there is no real point in shipping FTGL under a dual license. Consequently removing LGPL references from the code, in agreement with Sean.

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• src/FTBBox.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     __FTBBox__
  #define     __FTBBox__
  
  #include <ft2build.h>
  #include FT_FREETYPE_H
  //#include FT_GLYPH_H
  #include FT_OUTLINE_H
  
  #include "ftgl.h"
  #include "FTPoint.h"
  
  
  /**
   * FTBBox is a convenience class for handling bounding boxes.
   */
  class FTGL_EXPORT FTBBox
  {
      public:
          /**
           * Default constructor. Bounding box is set to zero.
           */
          FTBBox()
          :   lowerX(0.0f),
              lowerY(0.0f),
              lowerZ(0.0f),
              upperX(0.0f),
              upperY(0.0f),
              upperZ(0.0f)
          {}
  
          /**
           * Constructor.
           */
          FTBBox(float lx, float ly, float lz, float ux, float uy, float uz)
          :   lowerX(lx),
              lowerY(ly),
              lowerZ(lz),
              upperX(ux),
              upperY(uy),
              upperZ(uz)
          {}
  
          /**
           * Constructor. Extracts a bounding box from a freetype glyph. Uses
           * the control box for the glyph. <code>FT_Glyph_Get_CBox()</code>
           *
           * @param glyph A freetype glyph
           */
          FTBBox(FT_GlyphSlot glyph)
          :   lowerX(0.0f),
              lowerY(0.0f),
              lowerZ(0.0f),
              upperX(0.0f),
              upperY(0.0f),
              upperZ(0.0f)
          {
              FT_BBox bbox;
              FT_Outline_Get_CBox(&(glyph->outline), &bbox);
  
              lowerX = static_cast<float>(bbox.xMin) / 64.0f;
              lowerY = static_cast<float>(bbox.yMin) / 64.0f;
              lowerZ = 0.0f;
              upperX = static_cast<float>(bbox.xMax) / 64.0f;
              upperY = static_cast<float>(bbox.yMax) / 64.0f;
              upperZ = 0.0f;
  
          }
  
          /**
           * Destructor
           */
          ~FTBBox()
          {}
  
          /**
           * Mark the bounds invalid by setting all lower dimensions greater
           * than the upper dimensions.
           */
          void Invalidate()
          {
              lowerX = lowerY = lowerZ = 1.0f;
              upperX = upperY = upperZ = -1.0f;
          }
  
          /**
           * Determines if this bounding box is valid.
           *
           * @return True if all lower values are <= the corresponding
           *         upper values.
           */
          bool IsValid()
          {
              return((lowerX <= upperX) && (lowerY <= upperY) && (lowerZ <= upperZ));
          }
  
          /**
           * Move the Bounding Box by a vector.
           *
           * @param distance The distance to move the bbox in 3D space.
           */
          FTBBox& Move(FTPoint distance)
          {
              lowerX += distance.X();
              lowerY += distance.Y();
              lowerZ += distance.Z();
              upperX += distance.X();
              upperY += distance.Y();
              upperZ += distance.Z();
              return *this;
          }
  
          FTBBox& operator += (const FTBBox& bbox)
          {
              lowerX = bbox.lowerX < lowerX? bbox.lowerX: lowerX;
              lowerY = bbox.lowerY < lowerY? bbox.lowerY: lowerY;
              lowerZ = bbox.lowerZ < lowerZ? bbox.lowerZ: lowerZ;
              upperX = bbox.upperX > upperX? bbox.upperX: upperX;
              upperY = bbox.upperY > upperY? bbox.upperY: upperY;
              upperZ = bbox.upperZ > upperZ? bbox.upperZ: upperZ;
  
              return *this;
          }
  
          void SetDepth(float depth)
          {
              upperZ = lowerZ + depth;
          }
  
  
          /**
           * The bounds of the box
           */
          // Make these ftPoints & private
          float lowerX, lowerY, lowerZ, upperX, upperY, upperZ;
      protected:
  
  
      private:
  
  };
  
  
  #endif  //  __FTBBox__
  
  

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