id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	i_links	o_links
16	Height Map Terrain	bensch	nobody	"A !HeightMapTerrain is a class, that reads in a grey-scale image. Black is low terrain, White is high. Like this it should be very easy possible, to create good looking landscapes.[[BR]]
The process is called displacement and can also be applied to other bodies than flat surfaces. => Ideas?

 * The class must be able to
   * read in a texture as an SDL_surface.
{{{
bool Material::loadImage(char* imageName, GLuint* texture)
{
  char* imgNameWithPath = searchTextureInPaths(imageName);
  if (imgNameWithPath)
    {
      SDL_Surface* map;
      Image* pImage = new Image;
      map=IMG_Load(imgNameWithPath);
      if(!map)
	{
	  PRINTF(1)(""IMG_Load: %s\n"", IMG_GetError());
	  return false;
	}
      pImage->height = map->h;
      pImage->width  = map->w;
      pImage->data   = (GLubyte*)map->pixels;
      if( !IMG_isPNG(SDL_RWFromFile(imgNameWithPath, ""rb"")) && !IMG_isJPG(SDL_RWFromFile(imgNameWithPath, ""rb"")))
	for (int i=0;i<map->h * map->w *3;i+=3)
	  { 
	    GLuint temp = pImage->data[i];
	    pImage->data[i] = pImage->data[i+2];
	    pImage->data[i+2] = temp;
	  }
      this->applyItToAHitghtMap (pImage, texture);
    }
  else
    {
      PRINTF(1)(""Image not Found: %s\n"", imgNameWithPath);
      return false;
    }
}
}}}
   * then it should apply what it learnt to the heightMap (use the struct given below to pass info)
{{{
  struct Image
  {
    int rowSpan;    //!< The count of the rows this Image has.
    GLuint width;   //!< The width of the Image.
    GLuint height;  //!< The height of the Image.
    GLuint bpp;     //!< BitsPerPixel
    GLuint type;    //!< Type of the Image.
    GLubyte *data;  //!< The Image Data comes here! DANGER: uncompressed data. Delete it!
  };
}}}
   * Then Transform the mesh, pack it into (multipe) display lists, and give it back to orxonox.

 * Look out!
   * Loading will heappen at levelstart, so it can use some time.
   * During the Game-runtime there may be __no__ delay.
  Look, that your algorithm covers this."	defect	closed	minor		AI		invalid