A virtual prototype is a major interim step towards the creation of a virtual environment. This book explores the simulation, interaction, concepts and tools of virtual prototypes and environments. It provides a mixture of state-of-the-art, advanced research and industrial papers.A virtual prototype is a major interim step towards the creation of a virtual environment. This book explores the simulation, interaction, concepts and tools of virtual prototypes and environments. It provides a mixture of state-of-the-art, advanced research and industrial papers.Introduction - J Rix, Germany. Part One: Perspectives for virtual prototyping. About Plato's cave - J Teixeira, Portugal, and Murtinho. Information technology, a catalyst for process optimization - Jain and K Fliess, USA. Rapid prototyping - An approach beyond manufacturing technology - W Steger, Germany, and Wagner. Cooperative working on virtual prototypes - S Haas, USA, and U Jasnoch, Germany. Integration of virtual prototyping applications with a distributed conferencing system - N Schiffner, Germany. Part Two: Advanced product modeling techniques. Product and shape representation for virtual prototyping - S Bloor, UK, et al. Virtual prototyping through feature processing - J Ovtcharova, Germany. Dynamic and semantic modeling - A new approach to model products - K-P Greipel, Germany. Solid modeling as a framework in virtual environments - M Figueiredo, Portugal, and J Teixeira, Portugal. Virtual prototypes and product models in mechanical engineering - M Pratt, USA. A feature-based framework for transforming and representing multiple format CAD for virtual prototyping - Ganesan, and V Devarajan, USA. A reference model for product information sharing in concurrent engineering environment - De Martino et al. Part Three: Architectures for distributed systems (Architectures for virtual prototyping environments). Supporting multidisciplinary team in concurrent engineering - J Mal³ƒ