88 lines
3.1 KiB
Plaintext
88 lines
3.1 KiB
Plaintext
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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2004 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 OSGSIM_GEOGRAPHICLOCATION
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#define OSGSIM_GEOGRAPHICLOCATION 1
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#include <osg/Math>
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#include <osg/Referenced>
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#include <ostream>
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namespace osgSim {
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/** Stores a double precision geographic location, latitude and longitude.
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Derived from Referenced so it can be used as an osg::Object userData.
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*/
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class GeographicLocation : public osg::Referenced
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{
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public:
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GeographicLocation() { _v[0]=0.; _v[1]=0.; }
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GeographicLocation( double lat, double lon ) { _v[0]=lat; _v[1]=lon; }
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inline bool operator == ( const GeographicLocation& v) const { return _v[0]==v._v[0] && _v[1]==v._v[1]; }
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inline bool operator != ( const GeographicLocation& v) const { return _v[0]!=v._v[0] || _v[1]!=v._v[1]; }
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inline bool operator < ( const GeographicLocation& 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 return false;
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}
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inline double* ptr() { return _v; }
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inline const double* ptr() const { return _v; }
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inline void set( double lat, double lon ) { _v[0]=lat; _v[1]=lon; }
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inline double& latitude() { return _v[0]; }
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inline double& longitude() { return _v[1]; }
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inline double latitude() const { return _v[0]; }
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inline double longitude() const { return _v[1]; }
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inline bool valid() const { return !isNaN(); }
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inline bool isNaN() const { return osg::isNaN(_v[0]) || osg::isNaN(_v[1]); }
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/// binary vector add
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inline const GeographicLocation operator+( const GeographicLocation& rhs) const
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{
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return GeographicLocation(_v[0]+rhs._v[0], _v[1]+rhs._v[1]);
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}
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/// binary vector subtract
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inline const GeographicLocation operator-( const GeographicLocation& rhs) const
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{
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return GeographicLocation(_v[0]-rhs._v[0], _v[1]-rhs._v[1]);
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}
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friend inline std::ostream& operator << (std::ostream& output, const GeographicLocation& loc)
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{
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output << loc._v[0] << " " << loc._v[1];
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return output; // to enable cascading
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}
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private:
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// Note the convention is to store lat in _v[0] and lon in _v[1].
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// This is contrary to typical X-Y convention. Who decided lat should come
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// before lon anyway? I'd like a word with him...
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double _v[2];
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}; // end of class GeographicLocation
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} // end of namespace osgSim
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#endif
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