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157 lines
4.7 KiB
157 lines
4.7 KiB
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2009 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 OSGVOLUME_tile |
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#define OSGVOLUME_tile 1 |
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#include <osg/Group> |
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#include <osg/Image> |
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#include <osgDB/ReaderWriter> |
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#include <osgVolume/Layer> |
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#include <osgVolume/VolumeTechnique> |
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namespace osgVolume { |
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class Volume; |
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class OSGVOLUME_EXPORT TileID |
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{ |
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public: |
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TileID(); |
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TileID(int in_level, int in_x, int in_y, int in_z); |
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bool operator == (const TileID& rhs) const |
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{ |
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return (level==rhs.level) && (x==rhs.x) && (y==rhs.y) && (z==rhs.z); |
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} |
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bool operator != (const TileID& rhs) const |
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{ |
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return (level!=rhs.level) || (x!=rhs.x) || (y!=rhs.y) || (z!=rhs.z); |
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} |
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bool operator < (const TileID& rhs) const |
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{ |
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if (level<rhs.level) return true; |
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if (level>rhs.level) return false; |
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if (x<rhs.x) return true; |
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if (x>rhs.x) return false; |
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if (y<rhs.y) return true; |
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if (y>rhs.y) return false; |
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return z<rhs.z; |
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} |
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bool valid() const { return level>=0; } |
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int level; |
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int x; |
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int y; |
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int z; |
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}; |
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/** VolumeTile provides a framework for loosely coupling 3d image data with rendering algorithms. |
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* This allows TerrainTechnique's to be plugged in at runtime.*/ |
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class OSGVOLUME_EXPORT VolumeTile : public osg::Group |
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{ |
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public: |
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VolumeTile(); |
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/** Copy constructor using CopyOp to manage deep vs shallow copy.*/ |
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VolumeTile(const VolumeTile&,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY); |
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META_Node(osgVolume, VolumeTile); |
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virtual void traverse(osg::NodeVisitor& nv); |
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/** Call init on any attached TerrainTechnique.*/ |
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void init(); |
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/** Set the Volume that this Volume tile is a member of.*/ |
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void setVolume(Volume* ts); |
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/** Get the Volume that this Volume tile is a member of.*/ |
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Volume* getVolume() { return _volume; } |
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/** Get the const Volume that this Volume tile is a member of.*/ |
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const Volume* getVolume() const { return _volume; } |
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/** Set the TileID (layer, x,y,z) of the VolumeTile. |
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* The TileID is used so it can be located by its neighbours |
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* via the enclosing Volume node that manages a map of TileID to VolumeTiles.*/ |
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void setTileID(const TileID& tileID); |
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/** Get the TileID (layer, x,y,z) of the VolumeTile.*/ |
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const TileID& getTileID() const { return _tileID; } |
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void setLocator(Locator* locator) { _locator = locator; } |
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Locator* getLocator() { return _locator.get(); } |
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const Locator* getLocator() const { return _locator.get(); } |
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void setLayer(Layer* layer); |
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Layer* getLayer() { return _layer.get(); } |
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const Layer* getLayer() const { return _layer.get(); } |
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/** Set the VolumeTechnique that will be used to render this tile. */ |
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void setVolumeTechnique(VolumeTechnique* VolumeTechnique); |
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/** Get the VolumeTechnique that will be used to render this tile. */ |
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VolumeTechnique* getVolumeTechnique() { return _volumeTechnique.get(); } |
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/** Get the const VolumeTechnique that will be used to render this tile. */ |
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const VolumeTechnique* getVolumeTechnique() const { return _volumeTechnique.get(); } |
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/** Set the dirty flag on/off.*/ |
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void setDirty(bool dirty); |
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/** return true if the tile is dirty and needs to be updated,*/ |
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bool getDirty() const { return _dirty; } |
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virtual osg::BoundingSphere computeBound() const; |
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protected: |
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virtual ~VolumeTile(); |
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friend class Volume; |
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Volume* _volume; |
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bool _dirty; |
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bool _hasBeenTraversal; |
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TileID _tileID; |
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osg::ref_ptr<VolumeTechnique> _volumeTechnique; |
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osg::ref_ptr<Locator> _locator; |
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osg::ref_ptr<Layer> _layer; |
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}; |
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} |
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#endif
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