OSGPlane.inl

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#ifndef _OSGPLANE_INL_
#define _OSGPLANE_INL_

#include "OSGConfig.h"

OSG_BEGIN_NAMESPACE


inline
Real32 Plane::distance(const Pnt3f &pnt) const 
{ 
    return _normalVec.dot(pnt) - _distance; 
}

inline
bool Plane::isOnPlane(const Pnt3f &point) const
{
    Real32 scalar = _normalVec.dot(point) - _distance;

    return osgabs(scalar) < Eps ? true : false;
}


inline
bool Plane::isInHalfSpace(const Pnt3f &point) const
{
    Real32 scalar = _normalVec.dot(point) - _distance;

    return scalar >= 0 ? true : false;
}

inline 
bool Plane::isInHalfSpace(const Pnt3f  &min, const Pnt3f  &max) const
{
    Pnt3f p;
    
    setDirectionIndexPoint(min, max, _directionIndex, p);
    
    return isInHalfSpace(p);
}

inline 
bool Plane::isOutHalfSpace(const Pnt3f  &min, const Pnt3f  &max) const
{
    Pnt3f p;
    
    setDirectionIndexPoint(min, max, _directionIndex ^ 7, p);
    
    return !isInHalfSpace(p);   
}


inline
void Plane::set(const Vec3f &normal, Real32 distance)
{
    _normalVec = normal;
    _distance = distance;   

    updateDirectionIndex();
}


inline
void Plane::set(Real32 x, Real32 y, Real32 z, Real32 distance)
{
    _normalVec.setValues(x, y, z);

    _distance = distance;    

    updateDirectionIndex();
}


inline
void Plane::set(const Vec4f &plane)
{
    _normalVec.setValues(plane[0], plane[1], plane[2]);

    _distance = plane[3];    

    updateDirectionIndex();
}


inline
const Vec3f &Plane::getNormal(void) const 
{ 
    return _normalVec; 
}


inline
Real32 Plane::getDistanceFromOrigin(void) const 
{ 
    return _distance; 
}


inline
bool operator!=(const Plane &p1, const Plane &p2)
{ 
    return !(p1 == p2); 
}

inline
void Plane::setDirectionIndexPoint(const Pnt3f &min, const Pnt3f & max,
                                   const UInt8 index,      Pnt3f &pnt) const
{
    if(index & 0x1)
    {
        pnt[0] = min[0];
    }
    else
    {
        pnt[0] = max[0];
    }

    if(index & 0x2)
    {
        pnt[1] = min[1];
    }
    else
    {
        pnt[1] = max[1];
    }

    if(index & 0x4)
    {
        pnt[2] = min[2];
    }
    else
    {
        pnt[2] = max[2];
    }
}


OSG_END_NAMESPACE

#endif // _OSGPLANE_INL_

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