156 lines
4.7 KiB
Plaintext
156 lines
4.7 KiB
Plaintext
//C++ header - Open Scene Graph - Copyright (C) 1998-2002 Robert Osfield
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//Distributed under the terms of the GNU Library General Public License (LGPL)
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//as published by the Free Software Foundation.
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#ifndef OSG_UBYTE4
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#define OSG_UBUTE 1
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#include <osg/Vec3>
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#include <iostream>
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namespace osg {
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/** General purpose float quad, uses include representation
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of colour coordinates.
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No support yet added for float * UByte4 - is it necessary?
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Need to define a non-member non-friend operator* etc.
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UByte4 * float is okay
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*/
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class UByte4
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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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UByte4() { _v[0]=0; _v[1]=0; _v[2]=0; _v[3]=0;}
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UByte4(unsigned char r, unsigned char g, unsigned char b, unsigned char a)
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{
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_v[0]=r; _v[1]=g; _v[2]=b; _v[3]=a;
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}
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unsigned char _v[4];
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inline const bool operator == (const UByte4& v) const { return _v[0]==v._v[0] && _v[1]==v._v[1] && _v[2]==v._v[2] && _v[3]==v._v[3]; }
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inline const bool operator != (const UByte4& v) const { return _v[0]!=v._v[0] || _v[1]!=v._v[1] || _v[2]!=v._v[2] || _v[3]!=v._v[3]; }
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inline const bool operator < (const UByte4& 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 if (_v[1]<v._v[1]) return true;
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else if (_v[1]>v._v[1]) return false;
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else if (_v[2]<v._v[2]) return true;
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else if (_v[2]>v._v[2]) return false;
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else return (_v[3]<v._v[3]);
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}
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inline unsigned char* ptr() { return _v; }
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inline const unsigned char* ptr() const { return _v; }
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inline void set(unsigned char r, unsigned char g, unsigned char b, unsigned char a)
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{
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_v[0]=r; _v[1]=g; _v[2]=b; _v[3]=a;
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}
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inline unsigned char& operator [] (const int i) { return _v[i]; }
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inline unsigned char operator [] (const int i) const { return _v[i]; }
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inline unsigned char& r() { return _v[0]; }
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inline unsigned char& g() { return _v[1]; }
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inline unsigned char& b() { return _v[2]; }
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inline unsigned char& a() { return _v[3]; }
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inline unsigned char r() const { return _v[0]; }
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inline unsigned char g() const { return _v[1]; }
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inline unsigned char b() const { return _v[2]; }
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inline unsigned char a() const { return _v[3]; }
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/// multiply by scalar
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inline UByte4 operator * (const float rhs) const
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{
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UByte4 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 UByte4& operator *= (const float rhs)
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{
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_v[0]=(unsigned char)((float)_v[0]*rhs);
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_v[1]=(unsigned char)((float)_v[1]*rhs);
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_v[2]=(unsigned char)((float)_v[2]*rhs);
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_v[3]=(unsigned char)((float)_v[3]*rhs);
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return *this;
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}
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/// divide by scalar
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inline UByte4 operator / (const float rhs) const
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{
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UByte4 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 UByte4& operator /= (const 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 UByte4 operator + (const UByte4& rhs) const
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{
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return UByte4(_v[0]+rhs._v[0], _v[1]+rhs._v[1],
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_v[2]+rhs._v[2], _v[3]+rhs._v[3]);
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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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inline UByte4& operator += (const UByte4& 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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_v[2] += rhs._v[2];
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_v[3] += rhs._v[3];
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return *this;
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}
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/// binary vector subtract
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inline UByte4 operator - (const UByte4& rhs) const
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{
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return UByte4(_v[0]-rhs._v[0], _v[1]-rhs._v[1],
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_v[2]-rhs._v[2], _v[3]-rhs._v[3] );
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}
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/// unary vector subtract
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inline UByte4& operator -= (const UByte4& 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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_v[2]-=rhs._v[2];
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_v[3]-=rhs._v[3];
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return *this;
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}
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friend inline std::ostream& operator << (std::ostream& output, const UByte4& vec)
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{
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output << vec._v[0] << " "
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<< vec._v[1] << " "
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<< vec._v[2] << " "
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<< vec._v[3];
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return output; // to enable cascading
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}
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}; // end of class UByte4
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} // end of namespace osg
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#endif
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