80 lines
3.5 KiB
C
80 lines
3.5 KiB
C
//
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// xbs_math.h
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//
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///////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2001, Pipeworks Software Inc.
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// All rights reserved
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#ifndef __XBS_MATH_H__
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#define __XBS_MATH_H__
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struct D3DVECTOR4 : public _D3DVECTOR
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{
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float w;
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};
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const float Pi = 3.1415926535897932384626433832795028841971693993751058209f;
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const float DegreeToRad = 0.017453292519943295769236907684883f; // (Pi / 180)
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const float RadToDegree = 57.295779513082320876798154814114f; // (180 / Pi)
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inline void SetLookAt(const D3DVECTOR &cam, const D3DVECTOR &look, const D3DVECTOR &up, D3DMATRIX *pres);
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inline void SetProjection(float fov,float aspect, float near_plane, float far_plane, D3DMATRIX *pres);
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inline void SetInverse(const D3DMATRIX &mat, D3DMATRIX *pres);
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inline void SetTranspose(const D3DMATRIX &mat, D3DMATRIX *pres);
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inline void SetIdentity(D3DMATRIX *pres);
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inline void SetXRotation(float r,D3DMATRIX *pres);
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inline void SetYRotation(float r,D3DMATRIX *pres);
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inline void SetZRotation(float r,D3DMATRIX *pres);
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inline void SetXYZRotation(float x,float y,float z, D3DMATRIX *pres);
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inline void SetRotationFromLHQuat(const D3DVECTOR4 &quat,D3DMATRIX *pres);
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inline void SetRotationFromRHQuat(const D3DVECTOR4 &quat,D3DMATRIX *pres);
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inline void SetScale(float x,float y,float z,D3DMATRIX *pres);
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inline void SetCubeMapView(DWORD dwFace, const D3DVECTOR &pos,D3DMATRIX *pres);
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inline void TransformPoint(const D3DVECTOR &pt,const D3DMATRIX &mat, D3DVECTOR *pres);
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inline void TransformVector(const D3DVECTOR &v,const D3DMATRIX &mat, D3DVECTOR *pres);
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inline void TransformPoint(const D3DVECTOR4 &pt,const D3DMATRIX &mat, D3DVECTOR4 *pres);
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inline void MulMats(const D3DMATRIX &a, const D3DMATRIX &b,D3DMATRIX *pres);
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inline void ConcatMats(const D3DMATRIX &a, const D3DMATRIX &b, D3DMATRIX *pres);
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inline float Dot(const D3DVECTOR &a, const D3DVECTOR &b);
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inline float Length2(const D3DVECTOR &v);
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inline float Length(const D3DVECTOR &v);
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inline float Distance2(const D3DVECTOR &lhs, const D3DVECTOR &rhs);
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inline float Distance(const D3DVECTOR &lhs, const D3DVECTOR &rhs);
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inline void Normalize(D3DVECTOR *pres);
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inline void Cross(const D3DVECTOR &a, const D3DVECTOR &b, D3DVECTOR *pres);
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inline void Scale(D3DVECTOR *pres,float s);
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inline void Set(D3DVECTOR *pres,float x,float y,float z);
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inline void Set(D3DVECTOR4 *pres,float x,float y,float z,float w);
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inline void Sub(const D3DVECTOR &lhs, const D3DVECTOR &rhs, D3DVECTOR *pres);
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inline void Add(const D3DVECTOR &a, const D3DVECTOR &b, D3DVECTOR *pres);
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inline void SetQuatFromAxis(const D3DVECTOR &axis, float angle,D3DVECTOR4 *pres);
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inline float DotQuats(const D3DVECTOR4 &q0,const D3DVECTOR4 &q1);
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inline void SlerpQuats(const D3DVECTOR4 &q0,const D3DVECTOR4 &q1,float t,D3DVECTOR4 *pres);
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inline void NormalizeQuat(D3DVECTOR4 *pres);
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inline bool IsEq(float a,float b);
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inline bool PtsEq(const D3DVECTOR &a,const D3DVECTOR &b);
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inline void AddScaled(D3DVECTOR* ptarget, const D3DVECTOR& src, float scale);
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inline float QuickLength(const D3DVECTOR& vec);
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inline void QuickNormalize(D3DVECTOR* p_vec); // left unchanged if the length is already small
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inline void SinCos(const float &a, float *ps, float *pc);
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inline float AngleFromSinCos(const float &s, const float &c);
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inline void bs_swap(float& a, float& b);
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inline void bs_swap(int& a, int& b);
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inline float Square(float a) { return a*a; }
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#include "xbs_math_inl.h"
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#endif // __XBS_MATH_H__
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