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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* OpenSceneGraph Public License for more details.
*/
//osgManipulator - Copyright (C) 2007 Fugro-Jason B.V.
#ifndef OSGMANIPULATOR_CONSTRAINT
#define OSGMANIPULATOR_CONSTRAINT 1
#include <osgManipulator/Export>
#include <osg/Node>
#include <osg/Matrix>
namespace osgManipulator {
class MotionCommand;
class TranslateInLineCommand;
class TranslateInPlaneCommand;
class Scale1DCommand;
class Scale2DCommand;
class ScaleUniformCommand;
class OSGMANIPULATOR_EXPORT Constraint : public osg::Referenced
{
public:
virtual bool constrain(MotionCommand&) const { return false; }
virtual bool constrain(TranslateInLineCommand& command) const { return constrain((MotionCommand&)command); }
virtual bool constrain(TranslateInPlaneCommand& command) const { return constrain((MotionCommand&)command); }
virtual bool constrain(Scale1DCommand& command) const { return constrain((MotionCommand&)command); }
virtual bool constrain(Scale2DCommand& command) const { return constrain((MotionCommand&)command); }
virtual bool constrain(ScaleUniformCommand& command) const { return constrain((MotionCommand&)command); }
protected:
Constraint(osg::Node& refNode) : _refNode(&refNode) {}
virtual ~Constraint() {}
osg::Node& getReferenceNode() { return *_refNode; }
const osg::Node& getReferenceNode() const { return *_refNode; }
const osg::Matrix& getLocalToWorld() const { return _localToWorld; }
const osg::Matrix& getWorldToLocal() const { return _worldToLocal; }
void computeLocalToWorldAndWorldToLocal() const;
private:
osg::ref_ptr<osg::Node> _refNode;
mutable osg::Matrix _localToWorld;
mutable osg::Matrix _worldToLocal;
};
/**
* Constraint to snap motion commands to a sugar cube grid.
*/
class OSGMANIPULATOR_EXPORT GridConstraint : public Constraint
{
public:
GridConstraint(osg::Node& refNode, const osg::Vec3d& origin, const osg::Vec3d& spacing);
void setOrigin(const osg::Vec3d origin) { _origin = origin; }
void setSpacing(const osg::Vec3d spacing) { _spacing = spacing; }
virtual bool constrain(TranslateInLineCommand& command) const;
virtual bool constrain(TranslateInPlaneCommand& command) const;
virtual bool constrain(Scale1DCommand& command) const;
virtual bool constrain(Scale2DCommand& command) const;
virtual bool constrain(ScaleUniformCommand& command) const;
protected:
virtual ~GridConstraint() {}
private:
osg::Vec3d _origin;
osg::Vec3d _spacing;
mutable osg::Matrix _startMatrix;
mutable osg::Matrix _matrix;
};
}
#endif
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