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38 lines
1.1 KiB
C++
38 lines
1.1 KiB
C++
//
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// Created by Vladislav on 07.05.2026.
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//
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#pragma once
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#include "omath/linear_algebra/vector3.hpp"
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#include <array>
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#include <type_traits>
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namespace omath::primitives
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{
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// Oriented bounding box: a rectangular cuboid defined by a center, three
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// orthonormal local axes, and the half-size along each of those axes.
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template<class Type>
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requires std::is_floating_point_v<Type>
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struct Obb final
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{
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Vector3<Type> center;
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Vector3<Type> axis_x;
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Vector3<Type> axis_y;
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Vector3<Type> axis_z;
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Vector3<Type> half_extents;
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[[nodiscard]]
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constexpr std::array<Vector3<Type>, 8> vertices() const noexcept
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{
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const auto ex = axis_x * half_extents.x;
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const auto ey = axis_y * half_extents.y;
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const auto ez = axis_z * half_extents.z;
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return {
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center - ex - ey - ez, center + ex - ey - ez, center - ex + ey - ez, center + ex + ey - ez,
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center - ex - ey + ez, center + ex - ey + ez, center - ex + ey + ez, center + ex + ey + ez,
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};
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}
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};
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} // namespace omath::primitives
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