Small OpenGL based c++ rendering library
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catmullromspline.h 1.5KB

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  1. /* libsegl - Sebas Extended GL Library
  2. * Collection of Opengl/3D-Math helpers
  3. *
  4. * Copyright (c) 2008 by Sebastian Lohff, seba@seba-geek.de
  5. * http://www.seba-geek.de
  6. *
  7. * This library is free software; you can redistribute it and/or
  8. * modify it under the terms of the GNU Library General Public
  9. * License as published by the Free Software Foundation; either
  10. * version 2 of the License, or (at your option) any later version.
  11. *
  12. * This library is distributed in the hope that it will be useful,
  13. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15. * Library General Public License for more details.
  16. *
  17. * You should have received a copy of the GNU Library General Public
  18. * License along with this library; if not, write to the
  19. * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
  20. * Boston, MA 02110-1301, USA.
  21. */
  22. #ifndef __CATMULLROMSPLINE_H
  23. #define __CATMULLROMSPLINE_H
  24. #include <iostream>
  25. #include <SDL.h>
  26. #include <SDL_opengl.h>
  27. #include "matrix.h"
  28. #include "punkt2d.h"
  29. #include "punkt3d.h"
  30. namespace segl {
  31. class CatmullRomSpline {
  32. private:
  33. Matrix *cr;
  34. float s;
  35. void makeMatrix();
  36. public:
  37. CatmullRomSpline(float _s=0.5f);
  38. Matrix getPosition(float u, Matrix &controlpoints);
  39. Punkt3D getPosition(float u, Punkt3D a, Punkt3D b, Punkt3D c, Punkt3D d);
  40. Punkt2D getPosition(float u, Punkt2D a, Punkt2D b, Punkt2D c, Punkt2D d);
  41. void setS(float _s);
  42. ~CatmullRomSpline();
  43. };
  44. } // namespace segl
  45. #endif