83 lines
2.5 KiB
C++
83 lines
2.5 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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//osgDragger - Copyright (C) 2007 Fugro-Jason B.V.
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#ifndef _OSG_ANTISQUISH_
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#define _OSG_ANTISQUISH_ 1
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#include <osgManipulator/Export>
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#include <osg/Transform>
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#include <OpenThreads/Mutex>
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namespace osgManipulator {
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/**
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* Class that performs the Anti Squish by making the scaling uniform along all axes.
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*/
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class OSGMANIPULATOR_EXPORT AntiSquish: public osg::Transform
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{
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public :
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AntiSquish();
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AntiSquish(const osg::Vec3d& pivot);
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AntiSquish(const osg::Vec3d& pivot, const osg::Vec3d& position);
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AntiSquish(const AntiSquish& pat, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
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virtual osg::Object* cloneType() const { return new AntiSquish(); }
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virtual osg::Object* clone(const osg::CopyOp& copyop) const { return new AntiSquish (*this,copyop); }
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virtual bool isSameKindAs(const osg::Object* obj) const { return dynamic_cast<const AntiSquish *>(obj)!=NULL; }
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void setPivot(const osg::Vec3d& pvt)
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{
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_pivot = pvt;
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_usePivot = true;
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_cacheDirty = true;
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}
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const osg::Vec3d& getPivot() const { return _pivot; }
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void setPosition(const osg::Vec3d& pos)
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{
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_position = pos;
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_usePosition = true;
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_cacheDirty = true;
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}
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const osg::Vec3d& getPosition() const { return _position; }
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bool computeLocalToWorldMatrix(osg::Matrix& matrix,osg::NodeVisitor*) const;
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bool computeWorldToLocalMatrix(osg::Matrix& matrix,osg::NodeVisitor*) const;
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protected:
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virtual ~AntiSquish();
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bool computeUnSquishedMatrix(const osg::NodeVisitor*,osg::Matrix&) const;
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osg::Vec3d _pivot;
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bool _usePivot;
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osg::Vec3d _position;
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bool _usePosition;
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mutable OpenThreads::Mutex _cacheLock;
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mutable bool _cacheDirty;
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mutable osg::Matrix _cacheLocalToWorld;
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mutable osg::Matrix _cache;
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};
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}
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#endif
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