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    Apex Point Map for Constant-Time Bounding Plane Approximation

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    Date
    2015
    Author
    Laine, Samuli
    Karras, Tero
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    Abstract
    We introduce apex point map, a simple data structure for constructing conservative bounds for rigid objects. The data structure is distilled from a dense k-DOP, and can be queried in constant time to determine a tight bounding plane with any given normal vector. Both precalculation and lookup can be implemented very efficiently on current GPUs. Applications include, e.g., finding tight world-space bounds for transformed meshes, determining perobject shadow map extents, more accurate view frustum culling, and collision detection.
    BibTeX
    @inproceedings {sre.20151166,
    booktitle = {Eurographics Symposium on Rendering - Experimental Ideas & Implementations},
    editor = {Jaakko Lehtinen and Derek Nowrouzezahrai},
    title = {{Apex Point Map for Constant-Time Bounding Plane Approximation}},
    author = {Laine, Samuli and Karras, Tero},
    year = {2015},
    publisher = {The Eurographics Association},
    DOI = {10.2312/sre.20151166}
    }
    URI
    http://dx.doi.org/10.2312/sre.20151166
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