70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2013 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 OSGPRESENTATION_ELEMENT
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#define OSGPRESENTATION_ELEMENT 1
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#include <osgPresentation/Group>
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#include <osgUtil/UpdateVisitor>
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#include <osgGA/EventVisitor>
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namespace osgPresentation {
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/** osgPresentation::Element
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*/
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class OSGPRESENTATION_EXPORT Element : public osgPresentation::Group
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{
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public :
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Element() {}
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/** Copy constructor using CopyOp to manage deep vs shallow copy. */
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Element(const Element& element,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY) : osgPresentation::Group(element,copyop) {}
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META_Presentation(Element);
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/** Load the subgraph implementation of the element.*/
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virtual bool load() { return false; }
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/** Remove the the subgraph implementation, freeing up space.*/
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virtual bool unload() { removeChildren(0, getNumChildren()); return true; }
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/** Return true if the subgraph implementation has been loaded.*/
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virtual bool loaded() const { return getNumChildren()!=0; }
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/** Enter the element for the first time, starting any animations, movies, audio etc..*/
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virtual void enter() {}
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/** Leave the element, stopping any animations, movies, audio etc..*/
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virtual void leave() {}
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/** Pause any animatios, videos, audio etc.*/
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virtual void pause() {}
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/** Play any animatios, videos, audio etc.*/
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virtual void play() {}
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/** Reset any animations, vidoes, audio etc. back to the begininng.*/
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virtual void reset() {}
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protected :
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virtual ~Element() {}
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};
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}
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#endif
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