79 lines
2.7 KiB
C
79 lines
2.7 KiB
C
|
//===== Copyright <20> 1996-2005, Valve Corporation, All rights reserved. ======//
|
|||
|
|
//
|
|||
|
|
// Purpose: Math functions specific to the editor.
|
|||
|
|
//
|
|||
|
|
//===========================================================================//
|
|||
|
|
|
|||
|
|
#ifndef HAMMER_MATHLIB_H
|
|||
|
|
#define HAMMER_MATHLIB_H
|
|||
|
|
|
|||
|
|
#ifdef _WIN32
|
|||
|
|
#pragma once
|
|||
|
|
#endif
|
|||
|
|
|
|||
|
|
typedef unsigned char byte;
|
|||
|
|
|
|||
|
|
#include "mathlib/mathlib.h"
|
|||
|
|
#include "mathlib/vmatrix.h"
|
|||
|
|
#include <math.h>
|
|||
|
|
|
|||
|
|
|
|||
|
|
typedef vec_t vec5_t[5];
|
|||
|
|
|
|||
|
|
enum
|
|||
|
|
{
|
|||
|
|
AXIS_X = 0,
|
|||
|
|
AXIS_Y,
|
|||
|
|
AXIS_Z
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
//
|
|||
|
|
// Matrix functions:
|
|||
|
|
//
|
|||
|
|
|
|||
|
|
void RotateAroundAxis(VMatrix& Matrix, float fDegrees, int nAxis);
|
|||
|
|
void AxisAngleMatrix(VMatrix& Matrix, const Vector &Axis, float fAngle);
|
|||
|
|
|
|||
|
|
float fixang(float a);
|
|||
|
|
float lineangle(float x1, float y1, float x2, float y2);
|
|||
|
|
void polyMake( float x1, float y1, float x2, float y2, int npoints, float start_ang, Vector *pmPoints );
|
|||
|
|
float rint(float) _NOEXCEPT;
|
|||
|
|
|
|||
|
|
inline int fsign( float x) { if(x==0) return 0; else if (x>0) return 1; else return -1; }
|
|||
|
|
inline bool fequal( float value, float target, float delta) { return ( (value<(target+delta))&&(value>(target-delta)) ); }
|
|||
|
|
|
|||
|
|
void RoundVector( Vector2D &v );
|
|||
|
|
bool IsLineInside(const Vector2D &pt1, const Vector2D &pt2, int x1, int y1, int x2, int y2);
|
|||
|
|
bool IsPointInside(const Vector2D &pt, const Vector2D &mins, const Vector2D &maxs );
|
|||
|
|
|
|||
|
|
bool IsValidBox( Vector &mins, Vector &maxs );
|
|||
|
|
bool IsValidBox( const Vector2D &mins, const Vector2D &maxs );
|
|||
|
|
void NormalizeBox( Vector &mins, Vector &maxs );
|
|||
|
|
void NormalizeBox( Vector2D &mins, Vector2D &maxs );
|
|||
|
|
void PointsFromBox( const Vector &mins, const Vector &maxs, Vector *points );
|
|||
|
|
void LimitBox( Vector &mins, Vector &maxs, float limit );
|
|||
|
|
void PointsRevertOrder( Vector *pPoints, int nPoints);
|
|||
|
|
// Is box 1 inside box 2?
|
|||
|
|
bool IsBoxInside( const Vector2D &min1, const Vector2D &max1, const Vector2D &min2, const Vector2D &max2 );
|
|||
|
|
bool IsBoxIntersecting( const Vector2D &min1, const Vector2D &max1, const Vector2D &min2, const Vector2D &max2 );
|
|||
|
|
|
|||
|
|
const Vector &GetNormalFromPoints( const Vector &p1, const Vector &p2, const Vector &p3 );
|
|||
|
|
const Vector &GetNormalFromFace( int nFace );
|
|||
|
|
|
|||
|
|
inline void TransformPoint( const VMatrix& matrix, Vector &point )
|
|||
|
|
{
|
|||
|
|
Vector orgVector = point;
|
|||
|
|
matrix.V3Mul( orgVector, point );
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// solve equation v0 = x*v1 + y*v2 + z*v3
|
|||
|
|
void GetAxisFromFace( int nFace, Vector& vHorz, Vector &vVert, Vector &vThrd );
|
|||
|
|
bool SolveLinearEquation( const Vector& v0, const Vector& v1, const Vector& v2, const Vector& v3, Vector& vOut);
|
|||
|
|
// test intersection line & AABB, returns -1 if no intersection occurs
|
|||
|
|
float IntersectionLineAABBox( const Vector& mins, const Vector& maxs, const Vector& vStart, const Vector& vEnd, int &nFace );
|
|||
|
|
|
|||
|
|
bool BuildAxesFromNormal( const Vector &vNormal, Vector &vHorz, Vector &vVert );
|
|||
|
|
|
|||
|
|
#endif // HAMMER_MATHLIB_H
|