VISI (MREA Section): Difference between revisions
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→Octree Nodes
imported>Jackoalan (Created page with "Within MREA resources, the '''VISI section''' stores a PVS indexed into an octree. This PVS...") |
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=== Octree Nodes === | === Octree Nodes === | ||
The octree data is arranged in a Z-major depth-first hierarchy embedded with variable-length pointers to skip over | The octree data is arranged in a Z-major, depth-first hierarchy embedded with variable-length pointers to skip over | ||
children, permitting rapid child selection. Each node of the octree starts with a 1-byte header | children, permitting rapid child selection. Each node of the octree starts with a 1-byte header | ||
of classification bits. If at least one subdivide bit is set, the node is a branch and contains 1-7 pointers, addressed | of classification bits. If at least one subdivide bit is set, the node is a branch and contains 1-7 pointers, addressed | ||