Abstract

This paper presents a hardware accelerated approach to the voxelization of a wide range of 3D objects, including curves#surfaces, solids, and geometric and volumetric CSG models. The algorithms generate slices of the object models using a surface graphics processor to form the #nal volume representations. Boolean operations in a volumetric CSG model are carried out using frame bu#er blending functions. By storing the resulting volume in the 3D texture memory, the algorithms can also volume render the models in real time by 3D texture mapping. As a result, we are able to perform interactive object manipulations and Boolean operations in an intermixed environment of geometric and volumetric objects under a uni#ed volume graphics framework. 1

Citations