253 lines
7.9 KiB
C++
253 lines
7.9 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield
|
|
*
|
|
* This library is open source and may be redistributed and/or modified under
|
|
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
|
|
* (at your option) any later version. The full license is in LICENSE file
|
|
* included with this distribution, and on the openscenegraph.org website.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* OpenSceneGraph Public License for more details.
|
|
*/
|
|
|
|
#ifndef OSG_VEC4D
|
|
#define OSG_VEC4D 1
|
|
|
|
#include <osg/Vec3d>
|
|
#include <osg/Vec4f>
|
|
|
|
namespace osg {
|
|
|
|
/** General purpose double quad, uses include representation
|
|
of colour coordinates.
|
|
No support yet added for double * Vec4d - is it necessary?
|
|
Need to define a non-member non-friend operator* etc.
|
|
Vec4d * double is okay
|
|
*/
|
|
class Vec4d
|
|
{
|
|
public:
|
|
|
|
typedef double value_type;
|
|
|
|
value_type _v[4];
|
|
|
|
// Methods are defined here so that they are implicitly inlined
|
|
|
|
Vec4d() { _v[0]=0.0; _v[1]=0.0; _v[2]=0.0; _v[3]=0.0;}
|
|
|
|
Vec4d(value_type x, value_type y, value_type z, value_type w)
|
|
{
|
|
_v[0]=x;
|
|
_v[1]=y;
|
|
_v[2]=z;
|
|
_v[3]=w;
|
|
}
|
|
|
|
Vec4d(const Vec3d& v3,value_type w)
|
|
{
|
|
_v[0]=v3[0];
|
|
_v[1]=v3[1];
|
|
_v[2]=v3[2];
|
|
_v[3]=w;
|
|
}
|
|
|
|
inline Vec4d(const Vec4f& vec) { _v[0]=vec._v[0]; _v[1]=vec._v[1]; _v[2]=vec._v[2]; _v[3]=vec._v[3];}
|
|
|
|
inline operator Vec4f() const { return Vec4f((float)_v[0],(float)_v[1],(float)_v[2],(float)_v[3]);}
|
|
|
|
|
|
inline bool operator == (const Vec4d& v) const { return _v[0]==v._v[0] && _v[1]==v._v[1] && _v[2]==v._v[2] && _v[3]==v._v[3]; }
|
|
|
|
inline bool operator != (const Vec4d& v) const { return _v[0]!=v._v[0] || _v[1]!=v._v[1] || _v[2]!=v._v[2] || _v[3]!=v._v[3]; }
|
|
|
|
inline bool operator < (const Vec4d& v) const
|
|
{
|
|
if (_v[0]<v._v[0]) return true;
|
|
else if (_v[0]>v._v[0]) return false;
|
|
else if (_v[1]<v._v[1]) return true;
|
|
else if (_v[1]>v._v[1]) return false;
|
|
else if (_v[2]<v._v[2]) return true;
|
|
else if (_v[2]>v._v[2]) return false;
|
|
else return (_v[3]<v._v[3]);
|
|
}
|
|
|
|
inline value_type* ptr() { return _v; }
|
|
inline const value_type* ptr() const { return _v; }
|
|
|
|
inline void set( value_type x, value_type y, value_type z, value_type w)
|
|
{
|
|
_v[0]=x; _v[1]=y; _v[2]=z; _v[3]=w;
|
|
}
|
|
|
|
inline value_type& operator [] (unsigned int i) { return _v[i]; }
|
|
inline value_type operator [] (unsigned int i) const { return _v[i]; }
|
|
|
|
inline value_type& x() { return _v[0]; }
|
|
inline value_type& y() { return _v[1]; }
|
|
inline value_type& z() { return _v[2]; }
|
|
inline value_type& w() { return _v[3]; }
|
|
|
|
inline value_type x() const { return _v[0]; }
|
|
inline value_type y() const { return _v[1]; }
|
|
inline value_type z() const { return _v[2]; }
|
|
inline value_type w() const { return _v[3]; }
|
|
|
|
inline unsigned long asABGR() const
|
|
{
|
|
return (unsigned long)clampTo((_v[0]*255.0),0.0,255.0)<<24 |
|
|
(unsigned long)clampTo((_v[1]*255.0),0.0,255.0)<<16 |
|
|
(unsigned long)clampTo((_v[2]*255.0),0.0,255.0)<<8 |
|
|
(unsigned long)clampTo((_v[3]*255.0),0.0,255.0);
|
|
}
|
|
|
|
inline unsigned long asRGBA() const
|
|
{
|
|
return (unsigned long)clampTo((_v[3]*255.0),0.0,255.0)<<24 |
|
|
(unsigned long)clampTo((_v[2]*255.0),0.0,255.0)<<16 |
|
|
(unsigned long)clampTo((_v[1]*255.0),0.0,255.0)<<8 |
|
|
(unsigned long)clampTo((_v[0]*255.0),0.0,255.0);
|
|
}
|
|
|
|
inline bool valid() const { return !isNaN(); }
|
|
inline bool isNaN() const { return osg::isNaN(_v[0]) || osg::isNaN(_v[1]) || osg::isNaN(_v[2]) || osg::isNaN(_v[3]); }
|
|
|
|
/// dot product
|
|
inline value_type operator * (const Vec4d& rhs) const
|
|
{
|
|
return _v[0]*rhs._v[0]+
|
|
_v[1]*rhs._v[1]+
|
|
_v[2]*rhs._v[2]+
|
|
_v[3]*rhs._v[3] ;
|
|
}
|
|
|
|
/// multiply by scalar
|
|
inline Vec4d operator * (value_type rhs) const
|
|
{
|
|
return Vec4d(_v[0]*rhs, _v[1]*rhs, _v[2]*rhs, _v[3]*rhs);
|
|
}
|
|
|
|
/// unary multiply by scalar
|
|
inline Vec4d& operator *= (value_type rhs)
|
|
{
|
|
_v[0]*=rhs;
|
|
_v[1]*=rhs;
|
|
_v[2]*=rhs;
|
|
_v[3]*=rhs;
|
|
return *this;
|
|
}
|
|
|
|
/// divide by scalar
|
|
inline Vec4d operator / (value_type rhs) const
|
|
{
|
|
return Vec4d(_v[0]/rhs, _v[1]/rhs, _v[2]/rhs, _v[3]/rhs);
|
|
}
|
|
|
|
/// unary divide by scalar
|
|
inline Vec4d& operator /= (value_type rhs)
|
|
{
|
|
_v[0]/=rhs;
|
|
_v[1]/=rhs;
|
|
_v[2]/=rhs;
|
|
_v[3]/=rhs;
|
|
return *this;
|
|
}
|
|
|
|
/// binary vector add
|
|
inline Vec4d operator + (const Vec4d& rhs) const
|
|
{
|
|
return Vec4d(_v[0]+rhs._v[0], _v[1]+rhs._v[1],
|
|
_v[2]+rhs._v[2], _v[3]+rhs._v[3]);
|
|
}
|
|
|
|
/** unary vector add. Slightly more efficient because no temporary
|
|
intermediate object*/
|
|
inline Vec4d& operator += (const Vec4d& rhs)
|
|
{
|
|
_v[0] += rhs._v[0];
|
|
_v[1] += rhs._v[1];
|
|
_v[2] += rhs._v[2];
|
|
_v[3] += rhs._v[3];
|
|
return *this;
|
|
}
|
|
|
|
/// binary vector subtract
|
|
inline Vec4d operator - (const Vec4d& rhs) const
|
|
{
|
|
return Vec4d(_v[0]-rhs._v[0], _v[1]-rhs._v[1],
|
|
_v[2]-rhs._v[2], _v[3]-rhs._v[3] );
|
|
}
|
|
|
|
/// unary vector subtract
|
|
inline Vec4d& operator -= (const Vec4d& rhs)
|
|
{
|
|
_v[0]-=rhs._v[0];
|
|
_v[1]-=rhs._v[1];
|
|
_v[2]-=rhs._v[2];
|
|
_v[3]-=rhs._v[3];
|
|
return *this;
|
|
}
|
|
|
|
/// negation operator. Returns the negative of the Vec4d
|
|
inline const Vec4d operator - () const
|
|
{
|
|
return Vec4d (-_v[0], -_v[1], -_v[2], -_v[3]);
|
|
}
|
|
|
|
/// Length of the vector = sqrt( vec . vec )
|
|
inline value_type length() const
|
|
{
|
|
return sqrtf( _v[0]*_v[0] + _v[1]*_v[1] + _v[2]*_v[2] + _v[3]*_v[3]);
|
|
}
|
|
|
|
/// Length squared of the vector = vec . vec
|
|
inline value_type length2() const
|
|
{
|
|
return _v[0]*_v[0] + _v[1]*_v[1] + _v[2]*_v[2] + _v[3]*_v[3];
|
|
}
|
|
|
|
/** normalize the vector so that it has length unity
|
|
returns the previous length of the vector*/
|
|
inline value_type normalize()
|
|
{
|
|
value_type norm = Vec4d::length();
|
|
if (norm>0.0f)
|
|
{
|
|
value_type inv = 1.0/norm;
|
|
_v[0] *= inv;
|
|
_v[1] *= inv;
|
|
_v[2] *= inv;
|
|
_v[3] *= inv;
|
|
}
|
|
return( norm );
|
|
}
|
|
|
|
friend inline std::ostream& operator << (std::ostream& output, const Vec4d& vec)
|
|
{
|
|
output << vec._v[0] << " "
|
|
<< vec._v[1] << " "
|
|
<< vec._v[2] << " "
|
|
<< vec._v[3];
|
|
return output; // to enable cascading
|
|
}
|
|
|
|
}; // end of class Vec4d
|
|
|
|
|
|
/** Compute the dot product of a (Vec3,1.0) and a Vec4d.*/
|
|
inline Vec4d::value_type operator * (const Vec3d& lhs,const Vec4d& rhs)
|
|
{
|
|
return lhs[0]*rhs[0]+lhs[1]*rhs[1]+lhs[2]*rhs[2]+rhs[3];
|
|
}
|
|
|
|
/** Compute the dot product of a Vec4d and a (Vec3,1.0).*/
|
|
inline Vec4d::value_type operator * (const Vec4d& lhs,const Vec3d& rhs)
|
|
{
|
|
return lhs[0]*rhs[0]+lhs[1]*rhs[1]+lhs[2]*rhs[2]+lhs[3];
|
|
}
|
|
|
|
} // end of namespace osg
|
|
|
|
#endif
|