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SI3D
2005
ACM

Broad-phase collision detection using semi-adjusting BSP-trees

13 years 11 months ago
Broad-phase collision detection using semi-adjusting BSP-trees
The broad-phase step of collision detection in scenes composed of n moving objects is a challenging problem because enumerating collision pairs has an inherent O(n2) complexity. Spatial data structures are designed to accelerate this process, but often their static nature makes it difficult to handle dynamic scenes. In this work we propose a new structure called Semi-Adjusting BSP-tree for representing scenes composed of thousands of moving objects. An scheduling algorithm evaluates locations where the BSP-tree becomes unbalanced, uses several strategies to alter cutting planes, and defer updates based on their re-structuring cost. We show that the tree does not require a complete re-structuring even in highly dynamic scenes, but adjusts itself while maintaining desirable balancing and height properties. CR Categories: I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism
Rodrigo G. Luque, João Luiz Dihl Comba, Car
Added 26 Jun 2010
Updated 26 Jun 2010
Type Conference
Year 2005
Where SI3D
Authors Rodrigo G. Luque, João Luiz Dihl Comba, Carla Maria Dal Sasso Freitas
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