74 lines
2.7 KiB
C++
74 lines
2.7 KiB
C++
/* -*-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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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); }
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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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protected:
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osg::Matrixd _transform;
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osg::Matrixd _inverse;
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};
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}
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#endif
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