/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2009 Robert Osfield * * This library is open source and may be redistributed and/or modified under * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or * (at your option) any later version. The full license is in LICENSE file * included with this distribution, and on the openscenegraph.org website. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * OpenSceneGraph Public License for more details. */ #ifndef OSGVOLUME_LOCATOR #define OSGVOLUME_LOCATOR 1 #include #include #include #include namespace osgVolume { class OSGVOLUME_EXPORT Locator : public osg::Object { public: Locator() {} Locator(const osg::Matrixd& transform) { setTransform(transform); } /** Copy constructor using CopyOp to manage deep vs shallow copy.*/ Locator(const Locator& locator,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY): osg::Object(locator, copyop), _transform(locator._transform) {} META_Object(osgVolume, Locator); /** Set the transformation from local coordinates to model coordinates.*/ void setTransform(const osg::Matrixd& transform) { _transform = transform; _inverse.invert(_transform); locatorModified(); } /** Set the transformation from local coordinates to model coordinates.*/ const osg::Matrixd& getTransform() const { return _transform; } /** Set the extents of the local coords.*/ void setTransformAsExtents(double minX, double minY, double maxX, double maxY, double minZ, double maxZ); virtual bool convertLocalToModel(const osg::Vec3d& /*local*/, osg::Vec3d& /*world*/) const; virtual bool convertModelToLocal(const osg::Vec3d& /*world*/, osg::Vec3d& /*local*/) const; static bool convertLocalCoordBetween(const Locator& source, const osg::Vec3d& sourceNDC, const Locator& destination, osg::Vec3d& destinationNDC) { osg::Vec3d model; if (!source.convertLocalToModel(sourceNDC, model)) return false; if (!destination.convertModelToLocal(model, destinationNDC)) return false; return true; } bool computeLocalBounds(osg::Vec3d& bottomLeft, osg::Vec3d& topRight) const; bool computeLocalBounds(Locator& source, osg::Vec3d& bottomLeft, osg::Vec3d& topRight) const; /** Callback interface for enabling the monitoring of changes to the Locator.*/ class LocatorCallback : virtual public osg::Object { public: LocatorCallback() {} LocatorCallback(const LocatorCallback& rhs, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY): osg::Object(rhs,copyop) {} META_Object(osgVolume, LocatorCallback); virtual void locatorModified(Locator* locator) {}; protected: virtual ~LocatorCallback() {} }; void addCallback(LocatorCallback* callback); void removeCallback(LocatorCallback* callback); typedef std::vector< osg::ref_ptr > LocatorCallbacks; LocatorCallbacks& getLocatorCallbacks() { return _locatorCallbacks; } const LocatorCallbacks& getLocatorCallbacks() const { return _locatorCallbacks; } protected: void locatorModified(); osg::Matrixd _transform; osg::Matrixd _inverse; LocatorCallbacks _locatorCallbacks; }; } #endif