252 lines
7.9 KiB
C++
252 lines
7.9 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2005 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_VEC4F
|
|
#define OSG_VEC4F 1
|
|
|
|
#include <osg/Vec3f>
|
|
|
|
namespace osg {
|
|
|
|
/** General purpose float quad. Uses include representation
|
|
* of color coordinates.
|
|
* No support yet added for float * Vec4f - is it necessary?
|
|
* Need to define a non-member non-friend operator* etc.
|
|
* Vec4f * float is okay
|
|
*/
|
|
class Vec4f
|
|
{
|
|
public:
|
|
|
|
typedef float value_type;
|
|
|
|
value_type _v[4];
|
|
|
|
// Methods are defined here so that they are implicitly inlined
|
|
|
|
Vec4f() { _v[0]=0.0; _v[1]=0.0; _v[2]=0.0; _v[3]=0.0;}
|
|
|
|
Vec4f(value_type x, value_type y, value_type z, value_type w)
|
|
{
|
|
_v[0]=x;
|
|
_v[1]=y;
|
|
_v[2]=z;
|
|
_v[3]=w;
|
|
}
|
|
|
|
Vec4f(const Vec3f& v3,value_type w)
|
|
{
|
|
_v[0]=v3[0];
|
|
_v[1]=v3[1];
|
|
_v[2]=v3[2];
|
|
_v[3]=w;
|
|
}
|
|
|
|
inline bool operator == (const Vec4f& 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 Vec4f& 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 Vec4f& 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 value_type& red() { return _v[0]; }
|
|
inline value_type& green() { return _v[1]; }
|
|
inline value_type& blue() { return _v[2]; }
|
|
inline value_type& alpha() { return _v[3]; }
|
|
|
|
inline value_type red() const { return _v[0]; }
|
|
inline value_type green() const { return _v[1]; }
|
|
inline value_type blue() const { return _v[2]; }
|
|
inline value_type alpha() const { return _v[3]; }
|
|
|
|
inline unsigned long asABGR() const
|
|
{
|
|
return (unsigned long)clampTo((_v[0]*255.0f),0.0f,255.0f)<<24 |
|
|
(unsigned long)clampTo((_v[1]*255.0f),0.0f,255.0f)<<16 |
|
|
(unsigned long)clampTo((_v[2]*255.0f),0.0f,255.0f)<<8 |
|
|
(unsigned long)clampTo((_v[3]*255.0f),0.0f,255.0f);
|
|
}
|
|
|
|
inline unsigned long asRGBA() const
|
|
{
|
|
return (unsigned long)clampTo((_v[3]*255.0f),0.0f,255.0f)<<24 |
|
|
(unsigned long)clampTo((_v[2]*255.0f),0.0f,255.0f)<<16 |
|
|
(unsigned long)clampTo((_v[1]*255.0f),0.0f,255.0f)<<8 |
|
|
(unsigned long)clampTo((_v[0]*255.0f),0.0f,255.0f);
|
|
}
|
|
|
|
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 Vec4f& 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 Vec4f operator * (value_type rhs) const
|
|
{
|
|
return Vec4f(_v[0]*rhs, _v[1]*rhs, _v[2]*rhs, _v[3]*rhs);
|
|
}
|
|
|
|
/** Unary multiply by scalar. */
|
|
inline Vec4f& operator *= (value_type rhs)
|
|
{
|
|
_v[0]*=rhs;
|
|
_v[1]*=rhs;
|
|
_v[2]*=rhs;
|
|
_v[3]*=rhs;
|
|
return *this;
|
|
}
|
|
|
|
/** Divide by scalar. */
|
|
inline Vec4f operator / (value_type rhs) const
|
|
{
|
|
return Vec4f(_v[0]/rhs, _v[1]/rhs, _v[2]/rhs, _v[3]/rhs);
|
|
}
|
|
|
|
/** Unary divide by scalar. */
|
|
inline Vec4f& operator /= (value_type rhs)
|
|
{
|
|
_v[0]/=rhs;
|
|
_v[1]/=rhs;
|
|
_v[2]/=rhs;
|
|
_v[3]/=rhs;
|
|
return *this;
|
|
}
|
|
|
|
/** Binary vector add. */
|
|
inline Vec4f operator + (const Vec4f& rhs) const
|
|
{
|
|
return Vec4f(_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 Vec4f& operator += (const Vec4f& 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 Vec4f operator - (const Vec4f& rhs) const
|
|
{
|
|
return Vec4f(_v[0]-rhs._v[0], _v[1]-rhs._v[1],
|
|
_v[2]-rhs._v[2], _v[3]-rhs._v[3] );
|
|
}
|
|
|
|
/** Unary vector subtract. */
|
|
inline Vec4f& operator -= (const Vec4f& 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 Vec4f. */
|
|
inline const Vec4f operator - () const
|
|
{
|
|
return Vec4f (-_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 = Vec4f::length();
|
|
if (norm>0.0f)
|
|
{
|
|
value_type inv = 1.0f/norm;
|
|
_v[0] *= inv;
|
|
_v[1] *= inv;
|
|
_v[2] *= inv;
|
|
_v[3] *= inv;
|
|
}
|
|
return( norm );
|
|
}
|
|
|
|
}; // end of class Vec4f
|
|
|
|
|
|
|
|
/** Compute the dot product of a (Vec3,1.0) and a Vec4f. */
|
|
inline Vec4f::value_type operator * (const Vec3f& lhs,const Vec4f& rhs)
|
|
{
|
|
return lhs[0]*rhs[0]+lhs[1]*rhs[1]+lhs[2]*rhs[2]+rhs[3];
|
|
}
|
|
|
|
/** Compute the dot product of a Vec4f and a (Vec3,1.0). */
|
|
inline Vec4f::value_type operator * (const Vec4f& lhs,const Vec3f& rhs)
|
|
{
|
|
return lhs[0]*rhs[0]+lhs[1]*rhs[1]+lhs[2]*rhs[2]+lhs[3];
|
|
}
|
|
|
|
} // end of namespace osg
|
|
|
|
#endif
|
|
|