137 lines
3.7 KiB
C++
137 lines
3.7 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#ifndef OSG_BYTE2
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#define OSG_BYTE2 1
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namespace osg {
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/** General purpose float triple.
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* Uses include representation of color coordinates.
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* No support yet added for float * Byte2 - is it necessary?
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* Need to define a non-member non-friend operator* etc.
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* Byte2 * float is okay
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*/
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class Byte2
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{
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public:
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// Methods are defined here so that they are implicitly inlined
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Byte2() { _v[0]=0; _v[1]=0; }
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Byte2(char r, char g)
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{
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_v[0]=r; _v[1]=g;
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}
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char _v[2];
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inline bool operator == (const Byte2& v) const { return _v[0]==v._v[0] && _v[1]==v._v[1]; }
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inline bool operator != (const Byte2& v) const { return _v[0]!=v._v[0] || _v[1]!=v._v[1]; }
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inline bool operator < (const Byte2& v) const
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{
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if (_v[0]<v._v[0]) return true;
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else if (_v[0]>v._v[0]) return false;
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else return (_v[1]<v._v[1]);
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}
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inline char* ptr() { return _v; }
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inline const char* ptr() const { return _v; }
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inline void set(char r, char g)
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{
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_v[0]=r; _v[1]=g;
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}
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inline char& operator [] (unsigned int i) { return _v[i]; }
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inline char operator [] (unsigned int i) const { return _v[i]; }
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inline char& r() { return _v[0]; }
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inline char& g() { return _v[1]; }
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inline char r() const { return _v[0]; }
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inline char g() const { return _v[1]; }
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/** Multiply by scalar. */
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inline Byte2 operator * (float rhs) const
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{
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Byte2 col(*this);
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col *= rhs;
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return col;
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}
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/** Unary multiply by scalar. */
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inline Byte2& operator *= (float rhs)
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{
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_v[0]=(char)((float)_v[0]*rhs);
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_v[1]=(char)((float)_v[1]*rhs);
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return *this;
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}
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/** Divide by scalar. */
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inline Byte2 operator / (float rhs) const
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{
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Byte2 col(*this);
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col /= rhs;
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return col;
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}
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/** Unary divide by scalar. */
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inline Byte2& operator /= (float rhs)
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{
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float div = 1.0f/rhs;
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*this *= div;
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return *this;
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}
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/** Binary vector add. */
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inline Byte2 operator + (const Byte2& rhs) const
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{
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return Byte2(_v[0]+rhs._v[0], _v[1]+rhs._v[1]);
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}
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/** Unary vector add. Slightly more efficient because no temporary
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* intermediate object.
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*/
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inline Byte2& operator += (const Byte2& rhs)
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{
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_v[0] += rhs._v[0];
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_v[1] += rhs._v[1];
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return *this;
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}
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/** Binary vector subtract. */
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inline Byte2 operator - (const Byte2& rhs) const
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{
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return Byte2(_v[0]-rhs._v[0], _v[1]-rhs._v[1]);
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}
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/** Unary vector subtract. */
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inline Byte2& operator -= (const Byte2& rhs)
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{
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_v[0]-=rhs._v[0];
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_v[1]-=rhs._v[1];
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return *this;
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}
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}; // end of class Byte2
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} // end of namespace osg
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#endif
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