/usr/include/osg/Vec4f is in libopenscenegraph-dev 3.2.1-7ubuntu4.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 | /* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 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:
/** Data type of vector components.*/
typedef float value_type;
/** Number of vector components. */
enum { num_components = 4 };
/** Vec member variable. */
value_type _v[4];
// Methods are defined here so that they are implicitly inlined
/** Constructor that sets all components of the vector to zero */
Vec4f() { _v[0]=0.0f; _v[1]=0.0f; _v[2]=0.0f; _v[3]=0.0f;}
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& r() { return _v[0]; }
inline value_type& g() { return _v[1]; }
inline value_type& b() { return _v[2]; }
inline value_type& a() { return _v[3]; }
inline value_type r() const { return _v[0]; }
inline value_type g() const { return _v[1]; }
inline value_type b() const { return _v[2]; }
inline value_type a() const { return _v[3]; }
inline unsigned int asABGR() const
{
return (unsigned int)clampTo((_v[0]*255.0f),0.0f,255.0f)<<24 |
(unsigned int)clampTo((_v[1]*255.0f),0.0f,255.0f)<<16 |
(unsigned int)clampTo((_v[2]*255.0f),0.0f,255.0f)<<8 |
(unsigned int)clampTo((_v[3]*255.0f),0.0f,255.0f);
}
inline unsigned int asRGBA() const
{
return (unsigned int)clampTo((_v[3]*255.0f),0.0f,255.0f)<<24 |
(unsigned int)clampTo((_v[2]*255.0f),0.0f,255.0f)<<16 |
(unsigned int)clampTo((_v[1]*255.0f),0.0f,255.0f)<<8 |
(unsigned int)clampTo((_v[0]*255.0f),0.0f,255.0f);
}
/** Returns true if all components have values that are not NaN. */
inline bool valid() const { return !isNaN(); }
/** Returns true if at least one component has value NaN. */
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];
}
/** multiply by vector components. */
inline Vec4f componentMultiply(const Vec4f& lhs, const Vec4f& rhs)
{
return Vec4f(lhs[0]*rhs[0], lhs[1]*rhs[1], lhs[2]*rhs[2], lhs[3]*rhs[3]);
}
/** divide rhs components by rhs vector components. */
inline Vec4f componentDivide(const Vec4f& lhs, const Vec4f& rhs)
{
return Vec4f(lhs[0]/rhs[0], lhs[1]/rhs[1], lhs[2]/rhs[2], lhs[3]/rhs[3]);
}
} // end of namespace osg
#endif
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