19db0c1674
Vivek's email to osg-submissions: "I'm happy to release the osgdragger nodekit to the OSG community. I implemented the nodekit for my company, Fugro-Jason Inc., and they have kindly agreed to open source it. The nodekit contains a few draggers but it should be easy to build new draggers on top of it. The design of the nodekit is based on a SIGGRAPH 2002 course - "Design and Implementation of Direct Manipulation in 3D". You can find the course notes at http://www.pauliface.com/Sigg02/index.html. Reading pages 20 - 29 of the course notes should give you a fair understanding of how the nodekit works. The source code also contains an example of how to use the draggers."
85 lines
2.4 KiB
C++
85 lines
2.4 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/Matrix>
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#include <osg/CopyOp>
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#include <osg/NodeVisitor>
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#include <osg/NodeCallback>
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#include <osg/MatrixTransform>
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#include <osg/Quat>
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#include <osg/Vec3>
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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::MatrixTransform
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{
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public :
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AntiSquish();
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AntiSquish(const osg::Vec3& pivot);
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AntiSquish(const osg::Vec3& pivot, const osg::Vec3& 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::Vec3& pvt)
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{
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_pivot = pvt;
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_usePivot = true;
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_dirty = true;
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}
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const osg::Vec3& getPivot() { return _pivot; }
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void setPosition(const osg::Vec3& pos)
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{
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_position = pos;
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_usePosition = true;
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_dirty = true;
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}
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const osg::Vec3& getPosition() { return _position; }
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virtual ~AntiSquish();
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osg::Matrix computeUnSquishedMatrix(const osg::Matrix&, bool& flag);
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protected:
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osg::NodeCallback* _asqCallback;
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osg::Vec3 _pivot;
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bool _usePivot;
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osg::Vec3 _position;
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bool _usePosition;
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bool _dirty;
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osg::Matrix _cachedLocalToWorld;
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};
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}
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#endif
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