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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.
*/
#ifndef OSGGA_NODE_TRACKER_MANIPULATOR
#define OSGGA_NODE_TRACKER_MANIPULATOR 1
#include <osgGA/OrbitManipulator>
#include <osg/ObserverNodePath>
namespace osgGA {
class OSGGA_EXPORT NodeTrackerManipulator : public OrbitManipulator
{
typedef OrbitManipulator inherited;
public:
NodeTrackerManipulator( int flags = DEFAULT_SETTINGS );
NodeTrackerManipulator( const NodeTrackerManipulator& om,
const osg::CopyOp& copyOp = osg::CopyOp::SHALLOW_COPY );
META_Object( osgGA, NodeTrackerManipulator );
void setTrackNodePath(const osg::NodePath& nodePath);
void setTrackNodePath(const osg::ObserverNodePath& nodePath) { _trackNodePath = nodePath; }
osg::ObserverNodePath& getTrackNodePath() { return _trackNodePath; }
void setTrackNode(osg::Node* node);
osg::Node* getTrackNode() { osg::NodePath nodePath; return _trackNodePath.getNodePath(nodePath) && !nodePath.empty() ? nodePath.back() : 0; }
const osg::Node* getTrackNode() const { osg::NodePath nodePath; return _trackNodePath.getNodePath(nodePath) && !nodePath.empty() ? nodePath.back() : 0; }
enum TrackerMode
{
/** Track the center of the node's bounding sphere, but not rotations of the node.
* For databases which have a CoordinateSystemNode, the orientation is kept relative the coordinate frame if the center of the node.
*/
NODE_CENTER,
/** Track the center of the node's bounding sphere, and the azimuth rotation (about the z axis of the current coordinate frame).
* For databases which have a CoordinateSystemNode, the orientation is kept relative the coordinate frame if the center of the node.
*/
NODE_CENTER_AND_AZIM,
/** Tack the center of the node's bounding sphere, and the all rotations of the node.
*/
NODE_CENTER_AND_ROTATION
};
void setTrackerMode(TrackerMode mode);
TrackerMode getTrackerMode() const { return _trackerMode; }
enum RotationMode
{
/** Use a trackball style manipulation of the view direction w.r.t the tracked orientation.
*/
TRACKBALL,
/** Allow the elevation and azimuth angles to be adjust w.r.t the tracked orientation.
*/
ELEVATION_AZIM
};
void setRotationMode(RotationMode mode);
RotationMode getRotationMode() const;
virtual void setByMatrix(const osg::Matrixd& matrix);
virtual osg::Matrixd getMatrix() const;
virtual osg::Matrixd getInverseMatrix() const;
virtual void setNode(osg::Node*);
virtual void computeHomePosition();
protected:
virtual bool performMovementLeftMouseButton(const double eventTimeDelta, const double dx, const double dy);
virtual bool performMovementMiddleMouseButton(const double eventTimeDelta, const double dx, const double dy);
virtual bool performMovementRightMouseButton(const double eventTimeDelta, const double dx, const double dy);
void computeNodeWorldToLocal(osg::Matrixd& worldToLocal) const;
void computeNodeLocalToWorld(osg::Matrixd& localToWorld) const;
void computeNodeCenterAndRotation(osg::Vec3d& center, osg::Quat& rotation) const;
void computePosition(const osg::Vec3d& eye,const osg::Vec3d& lv,const osg::Vec3d& up);
osg::ObserverNodePath _trackNodePath;
TrackerMode _trackerMode;
};
}
#endif /* OSGGA_NODE_TRACKER_MANIPULATOR */
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