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Modeling and Interactive Walkthrough
of Large CAD Models
Principal Investigator: Dinesh Manocha
Funding Agency: U.S. Army Research Office
Agency Number: DAAH04-96-1-0257
Abstract
We propose to address some fundamental research
issues in modeling, display and simulation for
computer-aided design and virtual environments. Our
emphasis is to develop better algorithms and software
systems and to demonstrate their applications. The set
of problems include:
- Robust and interactive algorithms for
modeling physical objects using boolean operations.
- Hierarchical and multiresolution representations
of models for fast display.
- Develop a robust system to compute boundary
representation of solids defined using boolean combination
of sculptured models and integrate it with the BRL-CAD
solid modeling system.
- Interactive display of large scale polygonal,
sculptured and solid models on current graphics
architectures.
We utilize a number of techniques from algebraic
geometry, approximation theory, computational geometry,
numerical analysis, computer-aided geometric design and
computer graphics to investigate the underlying
mathematical concepts and to develop more efficient and
robust geometric algorithms. The resulting algorithms
and systems for solid modeling will be integrated with
the BRL-CAD solid modeling system and applied to
engineering design, lethality and vulnerability analysis,
and predictive signature models used in a number of Army
applications. We will also interface our implementations
with the immersion hardware at UNC and apply them to
interactive walkthrough of large scale models, such
as a Bradley fighting vehicle. Besides virtual
environments, these algorithms and systems will have a
significant impact on computer-aided design, robotics
and physically-based modeling.
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