96 lines
3.3 KiB
Plaintext
96 lines
3.3 KiB
Plaintext
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/* -*-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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//osgManipulator - Copyright (C) 2007 Fugro-Jason B.V.
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#ifndef OSGMANIPULATOR_CONSTRAINT
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#define OSGMANIPULATOR_CONSTRAINT 1
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#include <osgManipulator/Export>
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#include <osg/Node>
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#include <osg/Matrix>
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namespace osgManipulator {
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class MotionCommand;
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class TranslateInLineCommand;
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class TranslateInPlaneCommand;
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class Scale1DCommand;
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class Scale2DCommand;
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class ScaleUniformCommand;
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class OSGMANIPULATOR_EXPORT Constraint : public osg::Referenced
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{
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public:
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virtual bool constrain(MotionCommand&) const { return false; }
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virtual bool constrain(TranslateInLineCommand& command) const { return constrain((MotionCommand&)command); }
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virtual bool constrain(TranslateInPlaneCommand& command) const { return constrain((MotionCommand&)command); }
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virtual bool constrain(Scale1DCommand& command) const { return constrain((MotionCommand&)command); }
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virtual bool constrain(Scale2DCommand& command) const { return constrain((MotionCommand&)command); }
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virtual bool constrain(ScaleUniformCommand& command) const { return constrain((MotionCommand&)command); }
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protected:
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Constraint(osg::Node& refNode) : _refNode(&refNode) {}
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virtual ~Constraint() {}
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osg::Node& getReferenceNode() { return *_refNode; }
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const osg::Node& getReferenceNode() const { return *_refNode; }
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const osg::Matrix& getLocalToWorld() const { return _localToWorld; }
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const osg::Matrix& getWorldToLocal() const { return _worldToLocal; }
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void computeLocalToWorldAndWorldToLocal() const;
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private:
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osg::ref_ptr<osg::Node> _refNode;
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mutable osg::Matrix _localToWorld;
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mutable osg::Matrix _worldToLocal;
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};
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/**
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* Constraint to snap motion commands to a sugar cube grid.
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*/
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class OSGMANIPULATOR_EXPORT GridConstraint : public Constraint
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{
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public:
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GridConstraint(osg::Node& refNode, const osg::Vec3d& origin, const osg::Vec3d& spacing);
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void setOrigin(const osg::Vec3d origin) { _origin = origin; }
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void setSpacing(const osg::Vec3d spacing) { _spacing = spacing; }
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virtual bool constrain(TranslateInLineCommand& command) const;
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virtual bool constrain(TranslateInPlaneCommand& command) const;
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virtual bool constrain(Scale1DCommand& command) const;
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virtual bool constrain(Scale2DCommand& command) const;
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virtual bool constrain(ScaleUniformCommand& command) const;
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protected:
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virtual ~GridConstraint() {}
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private:
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osg::Vec3d _origin;
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osg::Vec3d _spacing;
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mutable osg::Matrix _startMatrix;
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mutable osg::Matrix _matrix;
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};
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}
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#endif
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