An Implicit Complexes Framework for Heterogeneous Objects Modelling.- Heterogeneous Object Design: An Integrated CAX Perspective.- The HybridTree: A Hybrid Constructive Shape Representation for Free-Form Modeling.- Modelling Function-Based Mixed-Dimensional Objects with Attributes.- SARDF: Signed Approximate Real Distance Functions in Heterogeneous Objects Modeling.- Feature-Based Material Blending for Heterogeneous Object Modeling.- Constructive Hypervolume Modeling Using Extended Space Mappings.- Optimization of Continuous Heterogeneous Models.- Automation of the Volumetric Models Construction.- Heterogeneous Modeling of Biological Organs and Organ Growth.- Universal Desktop Fabrication.