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61 lines
2.6 KiB
C
61 lines
2.6 KiB
C
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//======== (C) Copyright 2002 Charles G. Cleveland All rights reserved. =========
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//
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// The copyright to the contents herein is the property of Charles G. Cleveland.
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// The contents may be used and/or copied only with the written permission of
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// Charles G. Cleveland, or in accordance with the terms and conditions stipulated in
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// the agreement/contract under which the contents have been supplied.
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//
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// Purpose:
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//
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// $Workfile: MathUtil.h $
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// $Date: 2002/07/23 16:53:46 $
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//
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//-------------------------------------------------------------------------------
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// $Log: MathUtil.h,v $
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// Revision 1.6 2002/07/23 16:53:46 Flayra
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// - Added VectorDistance2D, added document headers
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//
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//===============================================================================
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#ifndef MATH_UTIL_H
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#define MATH_UTIL_H
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#include "types.h"
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#ifndef M_PI
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#define M_PI 3.14159265358979323846 // matches value in gcc v2 math.h
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#endif
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void AngleMatrix(const float* angles, float matrix[3][4]);
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double sqrt(double x);
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float Length(const float *v);
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void CreateOrthoNormalBasis(float inZAxis[3], float outXAxis[3], float outYAxis[3]);
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/**
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* Transforms a vector by an orthonormal basis.
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*/
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void TransformVector(const float v[3], const float xAxis[3], const float yAxis[3], const float zAxis[3], float result[3]);
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int RoundIntToNearestIncrementOf(int inValue, int inIncrement);
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void RotateValuesByVector(int32& ioX, int32& ioY, int32& ioZ, /*const float* inBaseVector,*/ const float* inVector);
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void RotateFloatValuesByVector(float& ioX, float& ioY, float& ioZ, /*const float* inBaseVector,*/ const float* inVector);
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float WrapFloat(float inValue, float inMin, float inMax);
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void VectorAngles( const float *forward, float *angles );
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float VectorNormalize (float *v);
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void VectorInverse ( float *v );
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void VectorScale (const float *in, float scale, float *out);
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void VectorMA (const float *veca, float scale, const float *vecb, float *vecc);
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bool IsVectorBetweenBoundingVectors(const float* inOrigin, const float* inRay, const float* inVecOne, const float* inVecTwo);
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void VectorRotate (const float* in1, const float in2[3][4], float* out);
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double VectorDistance(const float* in1, const float* in2);
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double VectorDistance2D(const float* in1, const float* in2);
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// Added by mmcguire.
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/**
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* Compute the Euler angles which represent the orientation defined by the
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* three basis vectors. This is the mathematical inverse of the AngleVectors
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* function.
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*/
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void VectorsToAngles(const float forward[3], const float right[3], const float up[3], float angles[3]);
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const float kFloatTolerance = 0.001f;
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#endif
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