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62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
#ifndef COMPONENTS_TERRAIN_QUADTREEWORLD_H
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#define COMPONENTS_TERRAIN_QUADTREEWORLD_H
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#include "world.hpp"
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#include "terraingrid.hpp"
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#include <OpenThreads/Mutex>
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namespace osg
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{
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class NodeVisitor;
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}
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namespace Terrain
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{
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class RootNode;
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class ViewDataMap;
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/// @brief Terrain implementation that loads cells into a Quad Tree, with geometry LOD and texture LOD.
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class QuadTreeWorld : public TerrainGrid // note: derived from TerrainGrid is only to render default cells (see loadCell)
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{
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public:
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QuadTreeWorld(osg::Group* parent, osg::Group* compileRoot, Resource::ResourceSystem* resourceSystem, Storage* storage, int nodeMask, int preCompileMask, int borderMask, int compMapResolution, float comMapLevel, float lodFactor, int vertexLodMod, float maxCompGeometrySize);
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~QuadTreeWorld();
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void accept(osg::NodeVisitor& nv);
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virtual void enable(bool enabled);
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virtual void setViewDistance(float distance) { mViewDistance = distance; }
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void cacheCell(View *view, int x, int y);
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/// @note Not thread safe.
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virtual void loadCell(int x, int y);
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/// @note Not thread safe.
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virtual void unloadCell(int x, int y);
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View* createView();
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void preload(View* view, const osg::Vec3f& eyePoint, std::atomic<bool>& abort);
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void storeView(const View* view, double referenceTime);
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void reportStats(unsigned int frameNumber, osg::Stats* stats);
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private:
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void ensureQuadTreeBuilt();
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osg::ref_ptr<RootNode> mRootNode;
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osg::ref_ptr<ViewDataMap> mViewDataMap;
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OpenThreads::Mutex mQuadTreeMutex;
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bool mQuadTreeBuilt;
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float mLodFactor;
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int mVertexLodMod;
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float mViewDistance;
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};
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}
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#endif
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