114 lines
4.0 KiB
C++
114 lines
4.0 KiB
C++
/* -*-c++-*- */
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/* osgEarth - Geospatial SDK for OpenSceneGraph
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* Copyright 2020 Pelican Mapping
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* http://osgearth.org
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*
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* osgEarth is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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#pragma once
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#include <osgEarth/Common>
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#include <osgEarth/TileKey>
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#include <osgEarth/VisibleLayer>
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#include <osgEarth/TextureArena>
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#include <osgEarth/StateSetCache>
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#include <osgEarth/Chonk>
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#include <osg/Node>
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namespace osgEarth
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{
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class ProgressCallback;
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/**
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* Layer that creates a scene graph from a tiled data source.
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* This class is abstract; subclasses must implement createTileImplementation().
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*/
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class OSGEARTH_EXPORT TiledModelLayer : public VisibleLayer
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{
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public:
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// options serialization
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struct OSGEARTH_EXPORT Options : public VisibleLayer::Options
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{
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META_LayerOptions(osgEarth, Options, VisibleLayer::Options);
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OE_OPTION(bool, additive);
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OE_OPTION(float, rangeFactor);
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OE_OPTION(unsigned, minLevel, 0u);
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OE_OPTION(unsigned, maxLevel, 99u);
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OE_OPTION(bool, nvgl, false);
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virtual Config getConfig() const;
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void fromConfig(const Config& conf);
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};
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public:
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META_Layer_Abstract(osgEarth, TiledModelLayer, Options, VisibleLayer);
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//! Create an OSG node from a tile key.
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//! @param key The tile key.
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//! @param progress A progress callback
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osg::ref_ptr<osg::Node> createTile(const TileKey& key, ProgressCallback* progress) const;
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//! Profile of the underlying tiled data source.
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virtual const Profile* getProfile() const = 0;
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//! Minimum available LOD of the underlying tiled data source.
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virtual unsigned getMinLevel() const;
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void setMinLevel(unsigned value);
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//! Maximum available LOD of the underlying tiled data source.
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virtual unsigned getMaxLevel() const;
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void setMaxLevel(unsigned value);
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//! Whether new LODs should be added to the scene (true) or replace existing ones (false)
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void setAdditive(const bool& value);
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const bool& getAdditive() const;
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//! The range factor. Default is 6
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void setRangeFactor(const float &value);
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const float& getRangeFactor() const;
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//! Forces a rebuild on this layer.
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void dirty();
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public: // Layer
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// The Node representing this layer.
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osg::Node* getNode() const override;
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// called by the map when this layer is added
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void addedToMap(const Map*) override;
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// called by the map when this layer is removed
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void removedFromMap(const Map*) override;
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// post-ctor initialization
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void init() override;
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protected:
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//! Subclasses must implement this to create a tile.
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//! @param key The tile key, in the underlying tiled data source's profile.
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//! @param progress A progress callback that can be checked for user cancellation.
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virtual osg::ref_ptr<osg::Node> createTileImplementation(const TileKey& key, ProgressCallback* progress) const = 0;
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// NVGL support:
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osg::ref_ptr<TextureArena> _textures;
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mutable ChonkFactory _chonkFactory;
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private:
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osg::observer_ptr< const Map > _map;
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osg::ref_ptr< osg::Group > _root;
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bool _graphDirty;
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osg::ref_ptr<StateSetCache> _statesetCache;
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void create();
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};
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}
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