Abstract

This chapter contains selected special topics in computer graphics. Since virtual reality (VR) applications are an important application area of computer graphics, factors are explained that can create a high degree of immersion in such applications so that a user feels truly present in a virtual environment. Simulations of fog, particle systems or dynamic surfaces can create realistic effects in computer graphics scenes. For interactive computer graphics, the selection of objects and the detection and handling of collisions are important. This allows users to explore and manipulate three-dimensional virtual worlds. For these topics, this chapter contains the technical basics, supported by OpenGL examples for most topics. Since the sense of hearing contributes greatly to immersion and thus presence, this chapter presents some important findings and technical principles for auralising acoustic scenes. The last part of this chapter contains a summary of important factors for the creation of a visual impression of depth in a scene. The focus is on seeing with both eyes (binocular vision) and the technical reproduction through stereoscopic output techniques. These techniques are used in 3D television and virtual reality headsets.

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