85 lines
3.6 KiB
C++
85 lines
3.6 KiB
C++
//----------------------------------------------------------------------------//
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// //
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// ozz-animation is hosted at http://github.com/guillaumeblanc/ozz-animation //
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// and distributed under the MIT License (MIT). //
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// //
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// Copyright (c) Guillaume Blanc //
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// //
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// Permission is hereby granted, free of charge, to any person obtaining a //
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// copy of this software and associated documentation files (the "Software"), //
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// to deal in the Software without restriction, including without limitation //
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// the rights to use, copy, modify, merge, publish, distribute, sublicense, //
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// and/or sell copies of the Software, and to permit persons to whom the //
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// Software is furnished to do so, subject to the following conditions: //
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// //
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// The above copyright notice and this permission notice shall be included in //
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// all copies or substantial portions of the Software. //
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// //
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR //
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, //
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL //
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER //
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING //
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER //
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// DEALINGS IN THE SOFTWARE. //
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// //
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//----------------------------------------------------------------------------//
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#ifndef OZZ_OZZ_BASE_MATHS_BOX_H_
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#define OZZ_OZZ_BASE_MATHS_BOX_H_
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#include <cstddef>
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#include "ozz/base/maths/vec_float.h"
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namespace ozz {
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namespace math {
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// Matrix forward declaration.
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struct Float4x4;
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// Defines an axis aligned box.
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struct Box {
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// Constructs an invalid box.
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Box();
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// Constructs a box with the specified _min and _max bounds.
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Box(const Float3& _min, const Float3& _max) : min(_min), max(_max) {}
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// Constructs the smallest box that contains the _count points _points.
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// _stride is the number of bytes between points.
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explicit Box(const Float3& _point) : min(_point), max(_point) {}
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// Constructs the smallest box that contains the _count points _points.
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// _stride is the number of bytes between points, it must be greater or
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// equal to sizeof(Float3).
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Box(const Float3* _points, size_t _stride, size_t _count);
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// Tests whether *this is a valid box.
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bool is_valid() const { return min <= max; }
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// Tests whether _p is within box bounds.
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bool is_inside(const Float3& _p) const { return _p >= min && _p <= max; }
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// Box's min and max bounds.
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Float3 min;
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Float3 max;
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};
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// Merges two boxes _a and _b.
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// Both _a and _b can be invalid.
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OZZ_INLINE Box Merge(const Box& _a, const Box& _b) {
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if (!_a.is_valid()) {
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return _b;
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} else if (!_b.is_valid()) {
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return _a;
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}
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return Box(Min(_a.min, _b.min), Max(_a.max, _b.max));
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}
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// Compute box transformation by a matrix.
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Box TransformBox(const Float4x4& _matrix, const Box& _box);
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} // namespace math
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} // namespace ozz
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#endif // OZZ_OZZ_BASE_MATHS_BOX_H_
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