101 lines
2.4 KiB
Plaintext
101 lines
2.4 KiB
Plaintext
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#ifndef OSGEARTHUTIL_CLUSTERNODE_H
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#define OSGEARTHUTIL_CLUSTERNODE_H
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#include <osgEarth/Common>
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#include <osg/Node>
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#include <osgEarth/PlaceNode>
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namespace osgEarth { namespace Contrib
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{
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using namespace osgEarth;
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typedef std::vector< osg::ref_ptr< PlaceNode > > PlaceNodeList;
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/**
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* ClusterNode clusters overlapping nodes together into PlaceNodes on the screen to avoid visual clutter and increase performance.
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*/
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class OSGEARTH_EXPORT ClusterNode : public osg::Node
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{
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public:
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struct Cluster
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{
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osg::ref_ptr< PlaceNode > marker;
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osg::NodeList nodes;
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};
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typedef std::vector< Cluster > ClusterList;
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class StyleClusterCallback : public osg::Referenced
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{
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public:
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virtual void operator()(Cluster& cluster) {}
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};
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class CanClusterCallback : public osg::Referenced
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{
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public:
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virtual bool operator()(osg::Node* a, osg::Node* b) { return true; }
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};
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public:
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ClusterNode(MapNode* mapNode = 0, osg::Image* defaultImage = 0);
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MapNode* getMapNode() const;
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void setMapNode(MapNode* mapNode);
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void addNode(osg::Node* node);
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void removeNode(osg::Node* node);
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void clear();
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unsigned int getRadius() const;
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void setRadius(unsigned int radius);
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bool getEnabled() const;
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void setEnabled(bool enabled);
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StyleClusterCallback* getStyleCallback();
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void setStyleCallback(StyleClusterCallback* callback);
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CanClusterCallback* getCanClusterCallback();
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void setCanClusterCallback(CanClusterCallback* callback);
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virtual void traverse(osg::NodeVisitor& nv);
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protected:
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PlaceNode* getOrCreateLabel();
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void getClusters(osgUtil::CullVisitor* cv, ClusterList& out);
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void buildIndex();
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osg::NodeList _nodes;
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unsigned int _radius;
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osg::ref_ptr< osg::Image > _defaultImage;
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PlaceNodeList _labelPool;
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unsigned int _nextLabel;
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osg::observer_ptr< MapNode > _mapNode;
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osg::ref_ptr< StyleClusterCallback > _styleCallback;
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osg::ref_ptr< CanClusterCallback > _canClusterCallback;
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osg::ref_ptr< Horizon > _horizon;
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osg::Matrixd _lastViewMatrix;
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ClusterList _clusters;
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osg::NodeList _clusterIndex;
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bool _dirtyIndex;
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bool _dirty;
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bool _enabled;
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};
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} }
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#endif
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