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/* Copyright (c) <2003-2011> <Julio Jerez, Newton Game Dynamics>
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source distribution.
*/
#ifndef __dgPlane__
#define __dgPlane__
#include "dgVector.h"
class dgPlane: public dgVector
{
public:
dgPlane ();
dgPlane (float x, float y, float z, float w);
dgPlane (const dgVector &normal, float distance);
dgPlane (const dgVector &P0, const dgVector &P1, const dgVector &P2);
dgPlane Scale (float s) const;
float Evalue (const float *point) const;
float Evalue (const dgVector &point) const;
};
class dgBigPlane: public dgBigVector
{
public:
dgBigPlane ();
dgBigPlane (double x, double y, double z, double w);
dgBigPlane (const dgBigVector &normal, double distance);
dgBigPlane (const dgBigVector &P0, const dgBigVector &P1, const dgBigVector &P2);
dgBigPlane Scale (double s) const;
double Evalue (const float *point) const;
#ifndef __USE_DOUBLE_PRECISION__
double Evalue (const double *point) const;
#endif
double Evalue (const dgVector &point) const;
double Evalue (const dgBigVector &point) const;
};
HACD_INLINE dgPlane::dgPlane ()
:dgVector ()
{
}
HACD_INLINE dgPlane::dgPlane (float x, float y, float z, float w)
:dgVector (x, y, z, w)
{
}
HACD_INLINE dgPlane::dgPlane (const dgVector &normal, float distance)
:dgVector (normal)
{
m_w = distance;
}
HACD_INLINE dgPlane::dgPlane (const dgVector &P0, const dgVector &P1, const dgVector &P2)
:dgVector ((P1 - P0) * (P2 - P0))
{
m_w = - (*this % P0);
}
HACD_INLINE dgPlane dgPlane::Scale (float s) const
{
return dgPlane (m_x * s, m_y * s, m_z * s, m_w * s);
}
HACD_INLINE float dgPlane::Evalue (const float *point) const
{
return m_x * point[0] + m_y * point[1] + m_z * point[2] + m_w;
}
HACD_INLINE float dgPlane::Evalue (const dgVector &point) const
{
return m_x * point.m_x + m_y * point.m_y + m_z * point.m_z + m_w;
}
HACD_INLINE dgBigPlane::dgBigPlane ()
:dgBigVector ()
{
}
HACD_INLINE dgBigPlane::dgBigPlane (double x, double y, double z, double w)
:dgBigVector (x, y, z, w)
{
}
HACD_INLINE dgBigPlane::dgBigPlane (const dgBigVector &normal, double distance)
:dgBigVector (normal)
{
m_w = distance;
}
HACD_INLINE dgBigPlane::dgBigPlane (const dgBigVector &P0, const dgBigVector &P1, const dgBigVector &P2)
:dgBigVector ((P1 - P0) * (P2 - P0))
{
m_w = - (*this % P0);
}
HACD_INLINE dgBigPlane dgBigPlane::Scale (double s) const
{
return dgBigPlane (m_x * s, m_y * s, m_z * s, m_w * s);
}
HACD_INLINE double dgBigPlane::Evalue (const float *point) const
{
return m_x * point[0] + m_y * point[1] + m_z * point[2] + m_w;
}
#ifndef __USE_DOUBLE_PRECISION__
HACD_INLINE double dgBigPlane::Evalue (const double *point) const
{
return m_x * point[0] + m_y * point[1] + m_z * point[2] + m_w;
}
#endif
HACD_INLINE double dgBigPlane::Evalue (const dgVector &point) const
{
return m_x * point.m_x + m_y * point.m_y + m_z * point.m_z + m_w;
}
HACD_INLINE double dgBigPlane::Evalue (const dgBigVector &point) const
{
return m_x * point.m_x + m_y * point.m_y + m_z * point.m_z + m_w;
}
#endif
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