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81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
#ifndef AXIO_MATHUTIL_H
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#define AXIO_MATHUTIL_H
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#include <cmath>
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#include <concepts>
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#include <cstddef>
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#include <utility>
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#include <Common/Math/CVector3f.h>
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class CAABox;
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class CPlane;
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class CRay;
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namespace Math
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{
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// Constants
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constexpr float skPi = 3.14159265358979323846f;
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constexpr float skHalfPi = skPi / 2.f;
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/** Aligns the input value to be a multiple of Align. Align must be a power of 2. */
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template <std::unsigned_integral Value>
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constexpr Value Align(Value value, size_t align)
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{
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return Value((value + align - 1) & ~(align - 1));
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}
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template<typename T>
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constexpr T Square(const T& V)
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{ return V * V; }
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template<typename T>
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constexpr T Cube(const T& V)
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{ return V * V * V; }
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inline float Distance(const CVector3f& kA, const CVector3f& kB)
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{ return kA.Distance(kB); }
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constexpr float DegreesToRadians(float Deg)
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{
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constexpr float Factor = skPi / 180.f;
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return Deg * Factor;
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}
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constexpr float RadiansToDegrees(float Rad)
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{
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constexpr float Factor = 180.f / skPi;
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return Rad * Factor;
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}
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template<typename T>
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constexpr T Lerp(const T& kA, const T& kB, float t)
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{
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T Diff = kB - kA;
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return kA + T(Diff * t);
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}
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std::pair<bool,float> RayPlaneIntersection(const CRay& rkRay, const CPlane& rkPlane);
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std::pair<bool,float> RayBoxIntersection(const CRay& rkRay, const CAABox& rkBox);
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std::pair<bool,float> RayLineIntersection(const CRay& rkRay, const CVector3f& rkPointA,
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const CVector3f& rkPointB, float Threshold = 0.02f);
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std::pair<bool,float> RaySphereIntersection(const CRay& rkRay, const CVector3f& rkSpherePos,
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float SphereRadius, bool AllowBackfaces = false);
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std::pair<bool,float> RayTriangleIntersection(const CRay& rkRay, const CVector3f& rkPointA,
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const CVector3f& rkPointB, const CVector3f& rkPointC,
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bool AllowBackfaces = false);
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CMatrix4f PerspectiveMatrix(float FOV, float Aspect, float Near, float Far);
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CMatrix4f OrthographicMatrix(float Left, float Right, float Bottom, float Top, float Near, float Far);
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}
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#endif // AXIO_MATHUTIL_H
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