129 lines
5.0 KiB
C++
129 lines
5.0 KiB
C++
/* -*-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 OSGTERRAIN_LOCATOR
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#define OSGTERRAIN_LOCATOR 1
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#include <osg/Object>
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#include <osg/Vec3d>
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#include <osg/CoordinateSystemNode>
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#include <osgTerrain/Export>
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namespace osgTerrain {
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class OSGTERRAIN_EXPORT Locator : public osg::Object
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{
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public:
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Locator();
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/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
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Locator(const Locator&,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
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META_Object(osgTerrain, Locator);
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/** CoordinateSystemType provides the classification of the type coordinate system represented.*/
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enum CoordinateSystemType
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{
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/** GEOCENTRIC coordinate systems are ones mapped to the around the ellipsoid, i.e. whole earth.*/
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GEOCENTRIC,
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/** GEOGRAPHIC coordinate systems are ones mapped to latitude and longitude.*/
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GEOGRAPHIC,
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/** PROJECTED coordinate systems are ones projected to a local projected coordindate system i.e. UTMs.*/
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PROJECTED
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};
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/** Set the CoordinatesSyetemType.
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* Note, the user must keep the CoordinateSystemString consistent with the type of the CoordindateSystem.*/
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void setCoordinateSystemType(CoordinateSystemType type) { _coordinateSystemType = type; }
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/** Get the CoordinatesSyetemType.*/
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CoordinateSystemType getCoordinateSystemType() const { return _coordinateSystemType; }
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/** Set the coordinate system format string. Typical values would be WKT, PROJ4, USGS etc.*/
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void setFormat(const std::string& format) { _format = format; }
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/** Get the coordinate system format string.*/
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const std::string& getFormat() const { return _format; }
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/** Set the CoordinateSystem reference string, should be stored in a form consistent with the Format.*/
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void setCoordinateSystem(const std::string& cs) { _cs = cs; }
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/** Get the CoordinateSystem reference string.*/
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const std::string& getCoordinateSystem() const { return _cs; }
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/** Set EllipsoidModel to describe the model used to map lat, long and height into geocentric XYZ and back. */
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void setEllipsoidModel(osg::EllipsoidModel* ellipsode) { _ellipsoidModel = ellipsode; }
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/** Get the EllipsoidModel.*/
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osg::EllipsoidModel* getEllipsoidModel() { return _ellipsoidModel.get(); }
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/** Get the const EllipsoidModel.*/
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const osg::EllipsoidModel* getEllipsoidModel() const { return _ellipsoidModel.get(); }
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/** Set the transformation from local coordinates to model coordinates.*/
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void setTransform(osg::Matrixd& transform) { _transform = transform; _inverse.invert(_transform); }
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/** Set the transformation from local coordinates to model coordinates.*/
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const osg::Matrixd& getTransform() const { return _transform; }
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/** Set the extents of the local coords.*/
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void setTransformAsExtents(double minX, double minY, double maxX, double maxY);
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virtual bool orientationOpenGL() const;
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virtual bool convertLocalToModel(const osg::Vec3d& /*local*/, osg::Vec3d& /*world*/) const;
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virtual bool convertModelToLocal(const osg::Vec3d& /*world*/, osg::Vec3d& /*local*/) const;
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static bool convertLocalCoordBetween(const Locator& source, const osg::Vec3d& sourceNDC,
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const Locator& destination, osg::Vec3d& destinationNDC)
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{
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osg::Vec3d model;
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if (!source.convertLocalToModel(sourceNDC, model)) return false;
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if (!destination.convertModelToLocal(model, destinationNDC)) return false;
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return true;
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}
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bool computeLocalBounds(Locator& source, osg::Vec3d& bottomLeft, osg::Vec3d& topRight);
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void setDefinedInFile(bool flag) { _definedInFile = flag; }
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bool getDefinedInFile() const { return _definedInFile; }
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protected:
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virtual ~Locator();
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CoordinateSystemType _coordinateSystemType;
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std::string _format;
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std::string _cs;
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osg::ref_ptr<osg::EllipsoidModel> _ellipsoidModel;
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osg::Matrixd _transform;
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osg::Matrixd _inverse;
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bool _definedInFile;
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};
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}
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#endif
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