94 lines
2.8 KiB
C++
94 lines
2.8 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#ifndef OSGGA_CAMERAMANIPULATOR
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#define OSGGA_CAMERAMANIPULATOR 1
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#include <osg/Camera>
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#include <osg/Node>
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#include <osgGA/Export>
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#include <osgGA/GUIEventHandler>
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#include <osgGA/GUIEventAdapter>
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#include <osgGA/GUIActionAdapter>
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namespace osgGA{
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/**
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CameraManipulator is an abstract base class defining the interface, and a certain
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amount of default functionality, for classes which wish to control OSG cameras
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in response to GUI events.
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*/
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class OSGGA_EXPORT CameraManipulator : public GUIEventHandler
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{
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public:
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virtual const char* className() const { return "CameraManipulator"; }
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/** Attach a camera to the manipulator to be used for specifying view.*/
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virtual void setCamera(osg::Camera*);
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/** Get the attached camera.*/
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virtual const osg::Camera * getCamera() const;
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/** Get the attached camera.*/
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virtual osg::Camera * getCamera();
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/**
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Attach a node to the manipulator, automatically detaching any previously attached node.
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setNode(NULL) detaches previous nodes.
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May be ignored by manipulators which do not require a reference model.
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*/
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virtual void setNode(osg::Node*) {}
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/** Return const node if attached.*/
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virtual const osg::Node* getNode() const { return NULL; }
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/** Return node if attached.*/
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virtual osg::Node* getNode() { return NULL; }
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/**
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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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*/
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virtual void home(const GUIEventAdapter& ,GUIActionAdapter&) {}
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/**
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Start/restart the manipulator.
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FIXME: what does this actually mean? Provide examples.
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*/
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virtual void init(const GUIEventAdapter& ,GUIActionAdapter&) {}
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/** Handle events, return true if handled, false otherwise. */
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virtual bool handle(const GUIEventAdapter& ea,GUIActionAdapter& us);
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/** Handle visitations */
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virtual void accept(GUIEventHandlerVisitor& v) { v.visit(*this); }
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protected:
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CameraManipulator();
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virtual ~CameraManipulator();
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// Reference pointer to a camera
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osg::ref_ptr<osg::Camera> _camera;
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};
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}
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#endif
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