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Daveo 2000-12-04 16:58:10 +00:00
parent 2a24119501
commit 79caf039ef
19 changed files with 3844 additions and 0 deletions
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53
Utils/Libs/Maths/plane.h Normal file
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#ifndef __PLANE_H__
#define __PLANE_H__
#include "mathtypes.h"
#include "vector3.h"
struct Plane
{
Vector3 m_Normal;
real m_Distance;
inline real GetDistance( Vector3 const &pnt ) const;
inline void Normalise( void );
inline void SetPlane( Vector3 const &p0, Vector3 const &p1 );
inline void SetPlane( Vector3 const &p0, Vector3 const &p1, Vector3 const &p2 );
};
inline real Plane::GetDistance( Vector3 const &pnt ) const
{
real v = (m_Normal * pnt) + m_Distance;
return v;
}
inline void Plane::Normalise( void )
{
real mag = m_Normal.GetLength();
real oneomag = 1.f / mag;
m_Normal.x *= oneomag;
m_Normal.y *= oneomag;
m_Normal.z *= oneomag;
m_Distance *= oneomag;
}
inline void Plane::SetPlane( Vector3 const &v0, Vector3 const &v1 )
{
m_Normal = v0 ^ v1;
m_Normal.Normalise();
m_Distance = 0.f;
}
inline void Plane::SetPlane( Vector3 const &p0, Vector3 const &p1, Vector3 const &p2 )
{
Vector3 v0 = (p1 - p0);
Vector3 v1 = (p2 - p0);
m_Normal = v0 ^ v1;
m_Normal.Normalise();
m_Distance = -(p0 * m_Normal);
}
#endif