Fawkes API  Fawkes Development Version
texture_drawer.h
00001 
00002 /***************************************************************************
00003  *  texture_drawer.h - Skeleton Visualization GUI: texture drawer
00004  *
00005  *  Created: Tue Mar 29 17:06:46 2011 (on the way to Magdeburg for GO2011)
00006  *  Copyright  2006-2011  Tim Niemueller [www.niemueller.de]
00007  *
00008  ****************************************************************************/
00009 
00010 /*  This program is free software; you can redistribute it and/or modify
00011  *  it under the terms of the GNU General Public License as published by
00012  *  the Free Software Foundation; either version 2 of the License, or
00013  *  (at your option) any later version.
00014  *
00015  *  This program is distributed in the hope that it will be useful,
00016  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00017  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00018  *  GNU Library General Public License for more details.
00019  *
00020  *  Read the full text in the LICENSE.GPL file in the doc directory.
00021  */
00022 
00023 #ifndef __PLUGINS_OPENNI_SKELGUI_TEXTURE_DRAWER_H_
00024 #define __PLUGINS_OPENNI_SKELGUI_TEXTURE_DRAWER_H_
00025 
00026 namespace firevision {
00027   class Camera;
00028 }
00029 
00030 class SkelGuiTextureDrawer
00031 {
00032  public:
00033   SkelGuiTextureDrawer(unsigned int width, unsigned int height);
00034   virtual ~SkelGuiTextureDrawer();
00035 
00036   virtual void fill_texture() = 0;
00037 
00038   void draw();
00039 
00040  protected:
00041   void copy_rgb_to_texture(const unsigned char *rgb_buf);
00042 
00043  private:
00044   unsigned int get_closest_power_of_two(unsigned int n);
00045   void init_texture();
00046   void draw_texture();
00047   void draw_rectangle(float topLeftX, float topLeftY,
00048                       float bottomRightX, float bottomRightY);
00049 
00050  protected:
00051   unsigned char       *__texture;       /**< Texture buffer. */
00052 
00053   const unsigned int   __width;         /**< Width of visible area from texture */
00054   const unsigned int   __height;        /**< Height of visible area from texture */
00055 
00056   const unsigned int   __texture_width; /**< Real texture width */
00057   const unsigned int   __texture_height;                /**< Real texture height */
00058 
00059  private:
00060   bool                 __texture_initialized;
00061   unsigned int         __texture_id;
00062   float                __texture_coords[8];
00063 
00064 };
00065 
00066 #endif