b15b677cc3
change of ' ' to GUIEventAdapter::KEY_Space, fix to url in Matrix_implementation.cpp. Syntax fixes by Robert Osfield to above submission fix inconsistencies with normal OSG coding style.
132 lines
5.0 KiB
C++
132 lines
5.0 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2005 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_TRACKBALLMANIPULATOR
|
|
#define OSGGA_TRACKBALLMANIPULATOR 1
|
|
|
|
#include <osgGA/MatrixManipulator>
|
|
#include <osg/Quat>
|
|
|
|
namespace osgGA{
|
|
|
|
class OSGGA_EXPORT TrackballManipulator : public MatrixManipulator
|
|
{
|
|
public:
|
|
TrackballManipulator();
|
|
|
|
virtual const char* className() const { return "Trackball"; }
|
|
|
|
/** set the position of the matrix manipulator using a 4x4 Matrix.*/
|
|
virtual void setByMatrix(const osg::Matrixd& matrix);
|
|
|
|
/** set the position of the matrix manipulator using a 4x4 Matrix.*/
|
|
virtual void setByInverseMatrix(const osg::Matrixd& matrix) { setByMatrix(osg::Matrixd::inverse(matrix)); }
|
|
|
|
/** get the position of the manipulator as 4x4 Matrix.*/
|
|
virtual osg::Matrixd getMatrix() const;
|
|
|
|
/** get the position of the manipulator as a inverse matrix of the manipulator, typically used as a model view matrix.*/
|
|
virtual osg::Matrixd getInverseMatrix() const;
|
|
|
|
/** Get the FusionDistanceMode. Used by SceneView for setting up setereo convergence.*/
|
|
virtual osgUtil::SceneView::FusionDistanceMode getFusionDistanceMode() const { return osgUtil::SceneView::USE_FUSION_DISTANCE_VALUE; }
|
|
|
|
/** Get the FusionDistanceValue. Used by SceneView for setting up setereo convergence.*/
|
|
virtual float getFusionDistanceValue() const { return _distance; }
|
|
|
|
/** Attach a node to the manipulator.
|
|
Automatically detaches previously attached node.
|
|
setNode(NULL) detaches previously nodes.
|
|
Is ignored by manipulators which do not require a reference model.*/
|
|
virtual void setNode(osg::Node*);
|
|
|
|
/** Return node if attached.*/
|
|
virtual const osg::Node* getNode() const;
|
|
|
|
/** Return node if attached.*/
|
|
virtual osg::Node* getNode();
|
|
|
|
/** Move the camera to the default position.
|
|
May be ignored by manipulators if home functionality is not appropriate.*/
|
|
virtual void home(const GUIEventAdapter& ea,GUIActionAdapter& us);
|
|
virtual void home(double);
|
|
|
|
/** Start/restart the manipulator.*/
|
|
virtual void init(const GUIEventAdapter& ea,GUIActionAdapter& us);
|
|
|
|
/** handle events, return true if handled, false otherwise.*/
|
|
virtual bool handle(const GUIEventAdapter& ea,GUIActionAdapter& us);
|
|
|
|
/** Get the keyboard and mouse usage of this manipulator.*/
|
|
virtual void getUsage(osg::ApplicationUsage& usage) const;
|
|
|
|
|
|
/** set the minimum distance (as ratio) the eye point can be zoomed in towards the
|
|
center before the center is pushed forward.*/
|
|
void setMinimumZoomScale(double minimumZoomScale) { _minimumZoomScale=minimumZoomScale; }
|
|
|
|
/** get the minimum distance (as ratio) the eye point can be zoomed in */
|
|
double getMinimumZoomScale() const { return _minimumZoomScale; }
|
|
|
|
/** Set the size of the trackball. */
|
|
void setTrackballSize(float size);
|
|
|
|
/** Get the size of the trackball. */
|
|
float getTrackballSize() const { return _trackballSize; }
|
|
|
|
protected:
|
|
|
|
virtual ~TrackballManipulator();
|
|
|
|
/** Reset the internal GUIEvent stack.*/
|
|
void flushMouseEventStack();
|
|
/** Add the current mouse GUIEvent to internal stack.*/
|
|
void addMouseEvent(const GUIEventAdapter& ea);
|
|
|
|
void computePosition(const osg::Vec3& eye,const osg::Vec3& lv,const osg::Vec3& up);
|
|
|
|
/** For the give mouse movement calculate the movement of the camera.
|
|
Return true is camera has moved and a redraw is required.*/
|
|
bool calcMovement();
|
|
|
|
void trackball(osg::Vec3& axis,float& angle, float p1x, float p1y, float p2x, float p2y);
|
|
float tb_project_to_sphere(float r, float x, float y);
|
|
|
|
|
|
/** Check the speed at which the mouse is moving.
|
|
If speed is below a threshold then return false, otherwise return true.*/
|
|
bool isMouseMoving();
|
|
|
|
// Internal event stack comprising last three mouse events.
|
|
osg::ref_ptr<const GUIEventAdapter> _ga_t1;
|
|
osg::ref_ptr<const GUIEventAdapter> _ga_t0;
|
|
|
|
osg::ref_ptr<osg::Node> _node;
|
|
|
|
double _modelScale;
|
|
double _minimumZoomScale;
|
|
|
|
bool _thrown;
|
|
|
|
osg::Vec3d _center;
|
|
osg::Quat _rotation;
|
|
double _distance;
|
|
float _trackballSize;
|
|
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|
|
|