/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 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 OSGVIEWER_VIEW #define OSGVIEWER_VIEW 1 #include #include #include #include #include #include #include #include #include #include #include #include namespace osgViewer { /** Base class for View configurations for setting up Camera and Windowing.*/ class OSGVIEWER_EXPORT ViewConfig : public osg::Object { public: ViewConfig() {} ViewConfig(const ViewConfig& rhs, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY) : osg::Object(rhs,copyop) {} META_Object(osgViewer,ViewConfig); /** configure method that is overridden by Config subclasses.*/ virtual void configure(osgViewer::View& /*view*/) const {} /** convenience method for getting the relavent display settings to use.*/ virtual osg::DisplaySettings* getActiveDisplaySetting(osgViewer::View& view) const; }; struct OSGVIEWER_EXPORT DepthPartitionSettings : public osg::Referenced { enum DepthMode { FIXED_RANGE, BOUNDING_VOLUME }; DepthPartitionSettings(DepthMode mode=BOUNDING_VOLUME); virtual bool getDepthRange(osg::View& view, unsigned int partition, double& zNear, double& zFar); DepthMode _mode; double _zNear; double _zMid; double _zFar; }; /** View holds a single view on a scene, this view may be composed of one or more slave cameras.*/ class OSGVIEWER_EXPORT View : public osg::View, public osgGA::GUIActionAdapter { public: View(); View(const osgViewer::View& view, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY); META_Object(osgViewer,View); /** Provide a mechanism for getting the osg::View associated from the GUIActionAdapter. * One would use this to case view to osgViewer::View(er) if supported by the subclass.*/ virtual osg::View* asView() { return this; } /** Provide a mechanism for getting the viewer object from this osgViewer::View. * In the case of a osgViewer::Viewer the ViewerBase will effectively point to this object as Viewer subclasses from View. * In the case of a osgViewer::CompsoiteViewer the ViewerBase will point to the CompositeViewer that owns this View. */ ViewerBase* getViewerBase() { return _viewerBase.get(); } /** Take all the settings, Camera and Slaves from the passed in view, leaving it empty. */ virtual void take(osg::View& rhs); virtual void setStartTick(osg::Timer_t tick); osg::Timer_t getStartTick() const { return _startTick; } Scene* getScene() { return _scene.get(); } const Scene* getScene() const { return _scene.get(); } /** Set the scene graph that the View will use.*/ virtual void setSceneData(osg::Node* node); template void setSceneData(const osg::ref_ptr& node) { setSceneData(node.get()); } /** Get the View's scene graph.*/ osg::Node* getSceneData() { return _scene.valid() ? _scene->getSceneData() : 0; } /** Get the const View's scene graph.*/ const osg::Node* getSceneData() const { return _scene.valid() ? _scene->getSceneData() : 0; } /** Set the View's database pager.*/ void setDatabasePager(osgDB::DatabasePager* dp); template void setDatabasePager(const osg::ref_ptr& dp) { setDatabasePager(dp.get()); } /** Get the View's database pager.*/ osgDB::DatabasePager* getDatabasePager(); /** Get the const View's database pager.*/ const osgDB::DatabasePager* getDatabasePager() const; /** Set the View's image pager.*/ void setImagePager(osgDB::ImagePager* ip); template void setImagePager(const osg::ref_ptr& ip) { setImagePager(ip.get()); } /** Get the View's image pager.*/ osgDB::ImagePager* getImagePager(); /** Get the const View's image pager.*/ const osgDB::ImagePager* getImagePager() const; /** Add a Device. * The Device is polled on each new frame via it's Device::checkEvents() method and any events generated then collected via Device::getEventQueue()*/ void addDevice(osgGA::Device* eventSource); template void addDevice(const osg::ref_ptr& eventSource) { addDevice(eventSource.get()); } /** Remove a Device. */ void removeDevice(osgGA::Device* eventSource); template void removeDevice(const osg::ref_ptr& eventSource) { removeDevice(eventSource.get()); } typedef std::vector< osg::ref_ptr > Devices; Devices& getDevices() { return _eventSources; } const Devices& getDevices() const { return _eventSources; } /* Set the EventQueue that the View uses to integrate external non window related events.*/ void setEventQueue(osgGA::EventQueue* eventQueue) { _eventQueue = eventQueue; } template void setEventQueue(const osg::ref_ptr& eventQueue) { setEventQueue(eventQueue.get()); } /* Get the View's EventQueue.*/ osgGA::EventQueue* getEventQueue() { return _eventQueue.get(); } /* Get the const View's EventQueue.*/ const osgGA::EventQueue* getEventQueue() const { return _eventQueue.get(); } /** Set the CameraManipulator that moves the View's master Camera position in response to events. * The parameter resetPosition determines whether manipulator is set to its home position.*/ void setCameraManipulator(osgGA::CameraManipulator* manipulator, bool resetPosition = true); template void setCameraManipulator(const osg::ref_ptr& manipulator, bool resetPosition = true) { setCameraManipulator(manipulator.get(), resetPosition); } /** Get the View's CameraManipulator.*/ osgGA::CameraManipulator* getCameraManipulator() { return _cameraManipulator.get(); } /** Get the const View's CameraManipulator.*/ const osgGA::CameraManipulator* getCameraManipulator() const { return _cameraManipulator.get(); } /** Set the view to the CameraManipulator's home position, if none is attached home() it does nothing. * Note, to set the home position use getCamaraManipulator()->setHomePosition(...). */ void home(); typedef std::list< osg::ref_ptr > EventHandlers; /** Add an EventHandler that adds handling of events to the View.*/ void addEventHandler(osgGA::EventHandler* eventHandler); template void addEventHandler(const osg::ref_ptr& eventHandler) { addEventHandler(eventHandler.get()); } /** Remove an EventHandler from View.*/ void removeEventHandler(osgGA::EventHandler* eventHandler); template void removeEventHandler(const osg::ref_ptr& eventHandler) { removeEventHandler(eventHandler.get()); } /** Get the View's list of EventHandlers.*/ EventHandlers& getEventHandlers() { return _eventHandlers; } /** Get the const View's list of EventHandlers.*/ const EventHandlers& getEventHandlers() const { return _eventHandlers; } /** Set the NodePath to any active CoordinateSystemNode present in the Scene. * The CoordinateSystemNode path is used to help applications and CamaraManipulators handle geocentric coordinates systems, * so that the local up direction is known at any position on the whole earth. */ void setCoordinateSystemNodePath(const osg::NodePath& nodePath); /** Get the NodePath to any active CoordinateSystemNode present in the Scene.*/ osg::NodePath getCoordinateSystemNodePath() const; /** Compute the NodePath to any active CoordinateSystemNode present in the Scene.*/ void computeActiveCoordinateSystemNodePath(); /** Set the DisplaySettings object associated with this view.*/ void setDisplaySettings(osg::DisplaySettings* ds) { _displaySettings = ds; } template void setDisplaySettings(const osg::ref_ptr& ds) { setDisplaySettings(ds.get()); } /** Set the DisplaySettings object associated with this view.*/ osg::DisplaySettings* getDisplaySettings() { return _displaySettings.get(); } /** Set the DisplaySettings object associated with this view.*/ const osg::DisplaySettings* getDisplaySettings() const { return _displaySettings.get(); } /** Set the FusionDistanceMode and Value. Note, only used when working in stereo.*/ void setFusionDistance(osgUtil::SceneView::FusionDistanceMode mode,float value=1.0f) { _fusionDistanceMode = mode; _fusionDistanceValue = value; } /** Get the FusionDistanceMode.*/ osgUtil::SceneView::FusionDistanceMode getFusionDistanceMode() const { return _fusionDistanceMode; } /** Get the FusionDistanceValue. Note, only used for USE_FUSION_DISTANCE_VALUE & PROPORTIONAL_TO_SCREEN_DISTANCE modes.*/ float getFusionDistanceValue() const { return _fusionDistanceValue; } /** Apply a viewer configuration to set up Cameras and Windowing. */ void apply(ViewConfig* config); template void apply(const osg::ref_ptr& config) { apply(config.get()); } ViewConfig* getLastAppliedViewConfig() { return _lastAppliedViewConfig.get(); } const ViewConfig* getLastAppliedViewConfig() const { return _lastAppliedViewConfig.get(); } /** deprecated, use view.apply(new osgViewer::AcrossAllScreens()). */ void setUpViewAcrossAllScreens(); /** deprecated, use view.apply(new osgViewer::SingleWindow(x,y,width,screenNum)). */ void setUpViewInWindow(int x, int y, int width, int height, unsigned int screenNum=0); /** deprecated, use view.apply(new osgViewer::SingleScreen(screenNum)). */ void setUpViewOnSingleScreen(unsigned int screenNum=0); /** deprecated, use view.apply(new osgViewer::SphericalDisplay(radius, collar, screenNum, intensityMap, projectorMatrix)). */ void setUpViewFor3DSphericalDisplay(double radius=1.0, double collar=0.45, unsigned int screenNum=0, osg::Image* intensityMap=0, const osg::Matrixd& projectorMatrix = osg::Matrixd()); /** deprecated, use view.apply(new osgViewer::PanoramicSphericalDisplay(radius, collar, screenNum, intensityMap, projectorMatrix)). */ void setUpViewForPanoramicSphericalDisplay(double radius=1.0, double collar=0.45, unsigned int screenNum=0, osg::Image* intensityMap=0, const osg::Matrixd& projectorMatrix = osg::Matrixd()); /** deprecated. use view.apply(new osgViewer::WoWVxDisplay(type (20 to 42), screenNum). */ void setUpViewForWoWVxDisplay(unsigned int screenNum, unsigned char wow_content, unsigned char wow_factor, unsigned char wow_offset, float wow_disparity_Zd, float wow_disparity_vz, float wow_disparity_M, float wow_disparity_C); /** Convenience method for setting up depth partitioning on the specified camera.*/ bool setUpDepthPartitionForCamera(osg::Camera* cameraToPartition, DepthPartitionSettings* dps=0); /** Convenience method for setting up multiple slave cameras with depth partitioning on each of the view's active cameras.*/ bool setUpDepthPartition(DepthPartitionSettings* dsp=0); /** Return true if this view contains a specified camera.*/ bool containsCamera(const osg::Camera* camera) const; template bool containsCamera(const osg::ref_ptr& camera) const { return containsCamera(camera.get()); } /** deprecated. */ const osg::Camera* getCameraContainingPosition(float x, float y, float& local_x, float& local_y) const; /** deprecated. */ bool computeIntersections(float x,float y, osgUtil::LineSegmentIntersector::Intersections& intersections,osg::Node::NodeMask traversalMask = 0xffffffff); /** deprecated. */ bool computeIntersections(float x,float y, const osg::NodePath& nodePath, osgUtil::LineSegmentIntersector::Intersections& intersections,osg::Node::NodeMask traversalMask = 0xffffffff); /** Compute intersections of a ray, starting the current mouse position, through the specified camera. */ bool computeIntersections(const osgGA::GUIEventAdapter& ea, osgUtil::LineSegmentIntersector::Intersections& intersections,osg::Node::NodeMask traversalMask = 0xffffffff); /** Compute intersections of a ray, starting the current mouse position, through the specified master camera's window/eye coordinates and a specified nodePath's subgraph. */ bool computeIntersections(const osgGA::GUIEventAdapter& ea, const osg::NodePath& nodePath, osgUtil::LineSegmentIntersector::Intersections& intersections,osg::Node::NodeMask traversalMask = 0xffffffff); /** Compute intersections of a ray through the specified camera. */ bool computeIntersections(const osg::Camera* camera, osgUtil::Intersector::CoordinateFrame cf, float x,float y, osgUtil::LineSegmentIntersector::Intersections& intersections,osg::Node::NodeMask traversalMask = 0xffffffff); /** Compute intersections of a ray through the specified camera and a specified nodePath's subgraph. */ bool computeIntersections(const osg::Camera* camera, osgUtil::Intersector::CoordinateFrame cf, float x,float y, const osg::NodePath& nodePath, osgUtil::LineSegmentIntersector::Intersections& intersections,osg::Node::NodeMask traversalMask = 0xffffffff); virtual void requestRedraw(); virtual void requestContinuousUpdate(bool needed=true); virtual void requestWarpPointer(float x,float y); /** Return true if there are pending updates to the scene graph that require an update. */ virtual bool requiresUpdateSceneGraph() const; /** Return true if there are graphics operations that require a draw of the grpahics context. */ virtual bool requiresRedraw() const; public: osg::Texture* createDistortionTexture(int width, int height); osg::Camera* assignRenderToTextureCamera(osg::GraphicsContext* gc, int width, int height, osg::Texture* texture); osg::Camera* assignKeystoneDistortionCamera(osg::DisplaySettings* ds, osg::GraphicsContext* gc, int x, int y, int width, int height, GLenum buffer, osg::Texture* texture, Keystone* keystone); osg::Camera* assignStereoCamera(osg::DisplaySettings* ds, osg::GraphicsContext* gc, int x, int y, int width, int height, GLenum buffer, double eyeScale); void assignStereoOrKeystoneToCamera(osg::Camera* camera, osg::DisplaySettings* ds); struct StereoSlaveCallback : public osg::View::Slave::UpdateSlaveCallback { StereoSlaveCallback(osg::DisplaySettings* ds, double eyeScale):_ds(ds), _eyeScale(eyeScale) {} virtual void updateSlave(osg::View& view, osg::View::Slave& slave); osg::ref_ptr _ds; double _eyeScale; }; public: void assignSceneDataToCameras(); void init(); protected: friend class CompositeViewer; virtual ~View(); virtual osg::GraphicsOperation* createRenderer(osg::Camera* camera); osg::observer_ptr _viewerBase; osg::Timer_t _startTick; Devices _eventSources; osg::ref_ptr _scene; osg::ref_ptr _eventQueue; osg::ref_ptr _cameraManipulator; EventHandlers _eventHandlers; osg::ObserverNodePath _coordinateSystemNodePath; osg::ref_ptr _displaySettings; osgUtil::SceneView::FusionDistanceMode _fusionDistanceMode; float _fusionDistanceValue; osg::ref_ptr _lastAppliedViewConfig; }; } #endif