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100 lines
3.7 KiB
100 lines
3.7 KiB
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2009 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 OSGVOLUME_LOCATOR |
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#define OSGVOLUME_LOCATOR 1 |
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#include <osgVolume/Export> |
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#include <osg/Object> |
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#include <osg/Matrixd> |
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#include <vector> |
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namespace osgVolume { |
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class OSGVOLUME_EXPORT Locator : public osg::Object |
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{ |
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public: |
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Locator() {} |
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Locator(const osg::Matrixd& transform) { setTransform(transform); } |
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/** Copy constructor using CopyOp to manage deep vs shallow copy.*/ |
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Locator(const Locator& locator,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY): |
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osg::Object(locator, copyop), |
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_transform(locator._transform) {} |
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META_Object(osgVolume, Locator); |
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/** Set the transformation from local coordinates to model coordinates.*/ |
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void setTransform(const osg::Matrixd& transform) { _transform = transform; _inverse.invert(_transform); locatorModified(); } |
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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, double minZ, double maxZ); |
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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(osg::Vec3d& bottomLeft, osg::Vec3d& topRight) const; |
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bool computeLocalBounds(Locator& source, osg::Vec3d& bottomLeft, osg::Vec3d& topRight) const; |
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/** Callback interface for enabling the monitoring of changes to the Locator.*/ |
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class LocatorCallback : virtual public osg::Object |
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{ |
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public: |
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LocatorCallback() {} |
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LocatorCallback(const LocatorCallback& rhs, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY): osg::Object(rhs,copyop) {} |
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META_Object(osgVolume, LocatorCallback); |
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virtual void locatorModified(Locator* locator) {}; |
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protected: |
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virtual ~LocatorCallback() {} |
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}; |
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void addCallback(LocatorCallback* callback); |
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void removeCallback(LocatorCallback* callback); |
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typedef std::vector< osg::ref_ptr<LocatorCallback> > LocatorCallbacks; |
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LocatorCallbacks& getLocatorCallbacks() { return _locatorCallbacks; } |
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const LocatorCallbacks& getLocatorCallbacks() const { return _locatorCallbacks; } |
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protected: |
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void locatorModified(); |
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osg::Matrixd _transform; |
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osg::Matrixd _inverse; |
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LocatorCallbacks _locatorCallbacks; |
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}; |
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} |
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#endif
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