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* Add descriptive comment to new branchless ray-AABB intersection tests.Tavian Barnes2010-07-151-0/+9
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* Remove some unneeded tests from ray-AABB intersection tests.Tavian Barnes2010-07-151-43/+28
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* Clean up optimized ray-AABB intersection code a bit.Tavian Barnes2010-07-151-21/+29
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* Precalculate 1.0/ray.n.{x,y,z} for ray-box intersection tests.Tavian Barnes2010-07-141-12/+17
| | | | This saves us nearly a factor of 2, and I feel silly for not doing this before.
* Rename dimension_impl.h to dimension-impl.h.Tavian Barnes2010-07-141-1/+1
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* Save some degeneracy tests in ray-AABB intersection tests.Tavian Barnes2010-07-091-16/+14
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* Make dmnsn_ray_box_intersection() return false for zero boxes.Tavian Barnes2010-07-031-3/+3
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* New dmnsn_bounding_box_is_infinite() predicate.Tavian Barnes2010-06-061-1/+1
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* Don't use an anonymous union in prtree.c.Tavian Barnes2010-06-061-25/+25
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* New bounding box special constructors.Tavian Barnes2010-06-061-28/+14
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* New dmnsn_prtree_inside() function, rename dmnsn_prtree_search().Tavian Barnes2010-06-061-6/+46
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* Add children to dmnsn_objects, which enables splitting unions.Tavian Barnes2010-06-051-1/+25
| | | | Also, use PR-trees for unions internally.
* Precompute objects in dmnsn_raytrace_scene() rather than dmnsn_new_prtree().Tavian Barnes2010-05-301-11/+0
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* Slight prtree search optimization.Tavian Barnes2010-05-291-5/+5
| | | | Exploit floating-point infinities to eliminate special t < 0.0 condition.
* Store the bounding boxes of child PR-tree nodes in the parent.Tavian Barnes2010-05-201-56/+63
| | | | This improves cache locality and is good for about a 10% performance boost.
* Write some more docs, and fix a couple things noticed while writing them.Tavian Barnes2010-05-101-2/+2
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* New DMNSN_ARRAY_FOREACH() macro, faster than iterating with dmnsn_array_get().Tavian Barnes2010-05-081-9/+4
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* Handle degenerate cases in ray/box intersections.Tavian Barnes2010-05-081-1/+10
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* Fix argument to malloc().Tavian Barnes2010-05-071-1/+1
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* Don't store unbounded objects (planes, etc.) in the PR-tree.Tavian Barnes2010-05-071-21/+86
| | | | | Keep them in a dmnsn_array* instead. This makes the tree better and saves us some search time.
* Use C99 for loop initializers.Tavian Barnes2010-05-051-15/+11
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* Optimize ray-AABB intersection tests a bit.Tavian Barnes2010-05-051-51/+29
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* Make dmnsn_new_prtree() handle empty scenes.Tavian Barnes2010-05-051-0/+6
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* Replace BVSTs with priority R-trees.Tavian Barnes2010-05-051-0/+574
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