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Diffstat (limited to 'intern/cycles/bvh/bvh_unaligned.h')
-rw-r--r-- | intern/cycles/bvh/bvh_unaligned.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/intern/cycles/bvh/bvh_unaligned.h b/intern/cycles/bvh/bvh_unaligned.h new file mode 100644 index 00000000000..4d0872f4a39 --- /dev/null +++ b/intern/cycles/bvh/bvh_unaligned.h @@ -0,0 +1,81 @@ +/* + * Copyright 2011-2016 Blender Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __BVH_UNALIGNED_H__ +#define __BVH_UNALIGNED_H__ + +#include "util_vector.h" + +CCL_NAMESPACE_BEGIN + +class BoundBox; +class BVHObjectBinning; +class BVHRange; +class BVHReference; +struct Transform; +class Object; + +/* Helper class to perform calculations needed for unaligned nodes. */ +class BVHUnaligned { +public: + BVHUnaligned(const vector<Object*>& objects); + + /* Calculate alignment for the oriented node for a given range. */ + Transform compute_aligned_space( + const BVHObjectBinning& range, + const BVHReference *references) const; + Transform compute_aligned_space( + const BVHRange& range, + const BVHReference *references) const; + + /* Calculate alignment for the oriented node for a given reference. + * + * Return true when space was calculated successfully. + */ + bool compute_aligned_space(const BVHReference& ref, + Transform *aligned_space) const; + + /* Calculate primitive's bounding box in given space. */ + BoundBox compute_aligned_prim_boundbox( + const BVHReference& prim, + const Transform& aligned_space) const; + + /* Calculate bounding box in given space. */ + BoundBox compute_aligned_boundbox( + const BVHObjectBinning& range, + const BVHReference *references, + const Transform& aligned_space, + BoundBox *cent_bounds = NULL) const; + BoundBox compute_aligned_boundbox( + const BVHRange& range, + const BVHReference *references, + const Transform& aligned_space, + BoundBox *cent_bounds = NULL) const; + + /* Calculate affine transform for node packing. + * Bounds will be in the range of 0..1. + */ + static Transform compute_node_transform(const BoundBox& bounds, + const Transform& aligned_space); +protected: + /* List of objects BVH is being created for. */ + const vector<Object*>& objects_; +}; + +CCL_NAMESPACE_END + +#endif /* __BVH_UNALIGNED_H__ */ + |