OpenSceneGraph/include/osgManipulator/Selection

/* -*-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_SELECTION
#define OSGMANIPULATOR_SELECTION 1

#include <osgManipulator/Export>
#include <osg/MatrixTransform>

namespace osgManipulator {

class MotionCommand;
class TranslateInLineCommand;
class TranslateInPlaneCommand;
class Scale1DCommand;
class Scale2DCommand;
class ScaleUniformCommand;
class Rotate3DCommand;

/** Computes the nodepath from the given node all the way upto the root. */
extern OSGMANIPULATOR_EXPORT void computeNodePathToRoot(osg::Node& node, osg::NodePath& np);



#define META_OSGMANIPULATOR_Object(library,name) \
virtual bool isSameKindAs(const osg::Object* obj) const { return dynamic_cast<const name *>(obj)!=NULL; } \
virtual const char* libraryName() const { return #library; }\
virtual const char* className() const { return #name; }



class CommandProcessor
{
    public:
        virtual bool receive(const MotionCommand&) = 0;
        virtual bool receive(const TranslateInLineCommand& command) = 0;
        virtual bool receive(const TranslateInPlaneCommand& command) = 0;
        virtual bool receive(const Scale1DCommand& command) = 0;
        virtual bool receive(const Scale2DCommand& command) = 0;
        virtual bool receive(const ScaleUniformCommand& command) = 0;
        virtual bool receive(const Rotate3DCommand& command) = 0;
};


/**
 * Selection listens to motion commands generated by draggers.
 */
class OSGMANIPULATOR_EXPORT Selection : public osg::MatrixTransform
{
    public:

        Selection();

        META_OSGMANIPULATOR_Object(osgManipulator,Selection)

        /**
         * Receive motion commands and set the MatrixTransform accordingly to
         * transform selections. Returns true on success.
         */
        virtual bool receive(const MotionCommand&);
        virtual bool receive(const TranslateInLineCommand& command)  { return receive((MotionCommand&)command); }
        virtual bool receive(const TranslateInPlaneCommand& command) { return receive((MotionCommand&)command); }
        virtual bool receive(const Scale1DCommand& command)          { return receive((MotionCommand&)command); }
        virtual bool receive(const Scale2DCommand& command)          { return receive((MotionCommand&)command); }
        virtual bool receive(const ScaleUniformCommand& command)     { return receive((MotionCommand&)command); }
        virtual bool receive(const Rotate3DCommand& command)         { return receive((MotionCommand&)command); }

    protected:

        virtual ~Selection();

        osg::Matrix _startMotionMatrix;

        osg::Matrix _localToWorld;
        osg::Matrix _worldToLocal;
};


}

#endif