An Efficient Trim Structure for Rendering Large B-Rep Models

Abstract : We present a multiresolution trim structure for fast and accurate B-Rep model visualization. To get a good tradeoff between performance and visual accuracy, we propose to use a vectorial but approximated representation of the model that allows efficient, real-time GPU exploitation. Our structure, based on a quadtree, enables us to do shallow lookups for distant fragments. For closeups, we leverage hardware tessellation. We get interactive frame rates for models that consists of hundreds of thousands of B-Rep faces, regardless of the zoom level.
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Frédéric Claux, David Vanderhaeghe, Loïc Barthe, Mathias Paulin, Jean-Pierre Jessel, et al.. An Efficient Trim Structure for Rendering Large B-Rep Models. 17th International Workshop on Vision, Modeling and Visualization (VMV 2012), Nov 2012, Magdebourg, Germany. ⟨10.2312/PE/VMV/VMV12/031-038⟩. ⟨hal-01298635⟩

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