Ray Casting

The images at bottom left are screen shots from an Open Inventor iv file viewed with ivview. The scene consists of a random number of spheres with random colors. At the center is a viewpoint in the shape of a sphere with a texture wrapped around it. The texture is a collection of the samples cast out by the viewpoint. This is the world as seen from the viewpoint. The top image is a scene with 7 spheres in it and the texture was generated with 100,000 samples. The bottom is a scene with 10 spheres in it and the texture was generated with 100,000,000 samples. Note the difference in quality of the textures. At the present time no filtering is being done for each sample. Filtering would reduce the number of samples required to fill in the spheres. Below are gif versions of the texture maps as well as links to the original RGB texture and Open Inventor iv scene graphs. (Open Inventor requires RGB images). Also are links to the code used to generate the textures and iv files. 10 Spheres, 100,000,000 samples 10 Spheres, 10,000,000 samples 7 Spheres, 100,000 samples 7 Spheres, 1,000,000 samples