96 lines
3.3 KiB
C++
96 lines
3.3 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 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 OSG_VIEW
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#define OSG_VIEW 1
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#include <osg/Camera>
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#include <OpenThreads/Mutex>
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namespace osg {
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/** View - maintains a master camera view and a list of slave cameras that are relative to this master camera.
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* Note, if no slave cameras are attached to the view then the master camera does both the control and implementation of the rendering of the scene,
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* but if slave cameras are present then the master controls the view onto the scene, while the slaves implement the rendering of the scene.
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*/
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class OSG_EXPORT View : public virtual osg::Referenced
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{
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public :
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View();
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/** Set the master camera of the view. */
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void setCamera(osg::Camera* camera) { _camera = camera; }
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/** Get the master camera of the view. */
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osg::Camera* getCamera() { return _camera.get(); }
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/** Get the const master camera of the view. */
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const osg::Camera* getCamera() const { return _camera.get(); }
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/** Slave allows one to up a camera that follows the master with a local offset to the project and view matrices.*/
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struct Slave
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{
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Slave() {}
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Slave(osg::Camera* camera, const osg::Matrixd& projectionOffset, const osg::Matrixd& viewOffset):
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_camera(camera), _projectionOffset(projectionOffset), _viewOffset(viewOffset) {}
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Slave(const Slave& rhs) :
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_camera(rhs._camera), _projectionOffset(rhs._projectionOffset), _viewOffset(rhs._viewOffset) {}
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Slave& operator = (const Slave& rhs)
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{
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_camera = rhs._camera;
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_projectionOffset = rhs._projectionOffset;
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_viewOffset = rhs._viewOffset;
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return *this;
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}
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osg::ref_ptr<osg::Camera> _camera;
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osg::Matrixd _projectionOffset;
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osg::Matrixd _viewOffset;
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};
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bool addSlave(osg::Camera* camera) { return addSlave(camera, osg::Matrix::identity(), osg::Matrix::identity()); }
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bool addSlave(osg::Camera* camera, const osg::Matrix& projectionOffset, const osg::Matrix& viewOffse);
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bool removeSlave(unsigned int pos);
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unsigned int getNumSlaves() const { return _slaves.size(); }
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Slave& getSlave(unsigned int pos) { return _slaves[pos]; }
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const Slave& getSlave(unsigned int pos) const { return _slaves[pos]; }
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Slave* findSlaveForCamera(osg::Camera* camera);
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void updateSlaves();
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void updateSlave(unsigned int i);
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protected :
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virtual ~View();
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osg::ref_ptr<osg::Camera> _camera;
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typedef std::vector<Slave> Slaves;
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Slaves _slaves;
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};
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}
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#endif
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