88 lines
3.1 KiB
C++
88 lines
3.1 KiB
C++
//C++ header - Open Scene Graph - Copyright (C) 1998-2002 Robert Osfield
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//Distributed under the terms of the GNU Library General Public License (LGPL)
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//as published by the Free Software Foundation.
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#ifndef OSGGA_TESTMANIPULATOR
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#define OSGGA_TESTMANIPULATOR 1
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#include <osgGA/MatrixManipulator>
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#include <osg/Quat>
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class TestManipulator : public osgGA::MatrixManipulator
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{
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public:
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TestManipulator();
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virtual ~TestManipulator();
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/** set the position of the matrix manipulator using a 4x4 Matrix.*/
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virtual void setByMatrix(const osg::Matrix& matrix);
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/** set the position of the matrix manipulator using a 4x4 Matrix.*/
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virtual void setByInverseMatrix(const osg::Matrix& matrix) { setByMatrix(osg::Matrix::inverse(matrix)); }
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/** get the position of the manipulator as 4x4 Matrix.*/
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virtual osg::Matrix getMatrix() const;
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/** get the position of the manipulator as a inverse matrix of the manipulator, typically used as a model view matrix.*/
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virtual osg::Matrix getInverseMatrix() const;
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/** Attach a node to the manipulator.
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Automatically detaches previously attached node.
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setNode(NULL) detaches previously nodes.
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Is ignored by manipulators which do not require a reference model.*/
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virtual void setNode(osg::Node*);
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/** Return node if attached.*/
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virtual const osg::Node* getNode() const;
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/** Return node if attached.*/
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virtual osg::Node* getNode();
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/** Move the camera to the default position.
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May be ignored by manipulators if home functionality is not appropriate.*/
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virtual void home(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& us);
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/** Start/restart the manipulator.*/
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virtual void init(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& us);
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/** handle events, return true if handled, false otherwise.*/
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virtual bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& us);
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private:
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/** Reset the internal GUIEvent stack.*/
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void flushMouseEventStack();
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/** Add the current mouse GUIEvent to internal stack.*/
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void addMouseEvent(const osgGA::GUIEventAdapter& ea);
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void computePosition(const osg::Vec3& eye,const osg::Vec3& lv,const osg::Vec3& up);
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/** For the give mouse movement calculate the movement of the camera.
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Return true is camera has moved and a redraw is required.*/
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bool calcMovement();
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/** Check the speed at which the mouse is moving.
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If speed is below a threshold then return false, otherwise return true.*/
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bool isMouseMoving();
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// Internal event stack comprising last three mouse events.
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osg::ref_ptr<const osgGA::GUIEventAdapter> _ga_t1;
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osg::ref_ptr<const osgGA::GUIEventAdapter> _ga_t0;
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osg::ref_ptr<osg::Node> _node;
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float _modelScale;
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float _minimumZoomScale;
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bool _thrown;
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osg::Vec3 _center;
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osg::Quat _rotation;
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float _distance;
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};
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#endif
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