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