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193 lines
6.1 KiB
193 lines
6.1 KiB
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 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_VEC4S |
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#define OSG_VEC4S 1 |
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namespace osg { |
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/** General purpose float quad. Uses include representation |
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* of color coordinates. |
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* No support yet added for float * Vec4f - is it necessary? |
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* Need to define a non-member non-friend operator* etc. |
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* Vec4f * float is okay |
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*/ |
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class Vec4s |
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{ |
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public: |
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/** Data type of vector components.*/ |
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typedef short value_type; |
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/** Number of vector components. */ |
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enum { num_components = 4 }; |
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/** Vec member variable. */ |
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value_type _v[4]; |
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/** Constructor that sets all components of the vector to zero */ |
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Vec4s() { _v[0]=0; _v[1]=0; _v[2]=0; _v[3]=0; } |
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Vec4s(value_type x, value_type y, value_type z, value_type w) |
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{ |
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_v[0]=x; |
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_v[1]=y; |
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_v[2]=z; |
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_v[3]=w; |
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} |
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inline bool operator == (const Vec4s& 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 bool operator != (const Vec4s& 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 bool operator < (const Vec4s& 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 value_type* ptr() { return _v; } |
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inline const value_type* ptr() const { return _v; } |
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inline void set( value_type x, value_type y, value_type z, value_type w) |
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{ |
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_v[0]=x; _v[1]=y; _v[2]=z; _v[3]=w; |
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} |
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inline value_type& operator [] (unsigned int i) { return _v[i]; } |
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inline value_type operator [] (unsigned int i) const { return _v[i]; } |
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inline value_type& x() { return _v[0]; } |
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inline value_type& y() { return _v[1]; } |
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inline value_type& z() { return _v[2]; } |
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inline value_type& w() { return _v[3]; } |
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inline value_type x() const { return _v[0]; } |
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inline value_type y() const { return _v[1]; } |
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inline value_type z() const { return _v[2]; } |
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inline value_type w() const { return _v[3]; } |
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inline value_type& r() { return _v[0]; } |
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inline value_type& g() { return _v[1]; } |
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inline value_type& b() { return _v[2]; } |
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inline value_type& a() { return _v[3]; } |
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inline value_type r() const { return _v[0]; } |
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inline value_type g() const { return _v[1]; } |
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inline value_type b() const { return _v[2]; } |
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inline value_type a() const { return _v[3]; } |
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/** Multiply by scalar. */ |
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inline Vec4s operator * (value_type rhs) const |
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{ |
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return Vec4s(_v[0]*rhs, _v[1]*rhs, _v[2]*rhs, _v[3]*rhs); |
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} |
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/** Unary multiply by scalar. */ |
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inline Vec4s& operator *= (value_type rhs) |
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{ |
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_v[0]*=rhs; |
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_v[1]*=rhs; |
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_v[2]*=rhs; |
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_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 Vec4s operator / (value_type rhs) const |
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{ |
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return Vec4s(_v[0]/rhs, _v[1]/rhs, _v[2]/rhs, _v[3]/rhs); |
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} |
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/** Unary divide by scalar. */ |
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inline Vec4s& operator /= (value_type rhs) |
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{ |
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_v[0]/=rhs; |
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_v[1]/=rhs; |
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_v[2]/=rhs; |
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_v[3]/=rhs; |
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return *this; |
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} |
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/** Binary vector multiply. */ |
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inline Vec4s operator * (const Vec4s& rhs) const |
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{ |
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return Vec4s(_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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/** Binary vector add. */ |
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inline Vec4s operator + (const Vec4s& rhs) const |
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{ |
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return Vec4s(_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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*/ |
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inline Vec4s& operator += (const Vec4s& 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 Vec4s operator - (const Vec4s& rhs) const |
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{ |
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return Vec4s(_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 Vec4s& operator -= (const Vec4s& 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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/** Negation operator. Returns the negative of the Vec4s. */ |
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inline Vec4s operator - () const |
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{ |
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return Vec4s (-_v[0], -_v[1], -_v[2], -_v[3]); |
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} |
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}; // end of class Vec4s |
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/** multiply by vector components. */ |
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inline Vec4s componentMultiply(const Vec4s& lhs, const Vec4s& rhs) |
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{ |
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return Vec4s(lhs[0]*rhs[0], lhs[1]*rhs[1], lhs[2]*rhs[2], lhs[3]*rhs[3]); |
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} |
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/** divide rhs components by rhs vector components. */ |
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inline Vec4s componentDivide(const Vec4s& lhs, const Vec4s& rhs) |
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{ |
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return Vec4s(lhs[0]/rhs[0], lhs[1]/rhs[1], lhs[2]/rhs[2], lhs[3]/rhs[3]); |
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} |
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} // end of namespace osg |
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#endif |
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