839 lines
30 KiB
C++
839 lines
30 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 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 DATASET_H
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#define DATASET_H 1
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#include <osg/Node>
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#include <osg/Matrixd>
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#include <osg/BoundingBox>
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#include <osg/Image>
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#include <osg/Shape>
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#include <osgTerrain/CoordinateSystem>
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#include <set>
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#include <gdal_priv.h>
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namespace osgTerrain
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{
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class DataSet : public osg::Referenced
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{
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public:
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class Source;
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struct SpatialProperties
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{
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SpatialProperties():
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_numValuesX(0),
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_numValuesY(0),
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_numValuesZ(0) {}
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SpatialProperties(const SpatialProperties& sp):
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_cs(sp._cs),
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_geoTransform(sp._geoTransform),
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_extents(sp._extents),
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_numValuesX(sp._numValuesX),
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_numValuesY(sp._numValuesY),
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_numValuesZ(sp._numValuesZ) {}
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SpatialProperties(osgTerrain::CoordinateSystem* cs, const osg::BoundingBox& extents):
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_cs(cs),
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_extents(extents),
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_numValuesX(0),
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_numValuesY(0),
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_numValuesZ(0) {}
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SpatialProperties& operator = (const SpatialProperties& sp)
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{
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if (&sp==this) return *this;
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_cs = sp._cs;
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_geoTransform = sp._geoTransform;
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_extents = sp._extents;
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_numValuesX = sp._numValuesX;
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_numValuesY = sp._numValuesY;
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_numValuesZ = sp._numValuesZ;
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return *this;
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}
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osg::ref_ptr<osgTerrain::CoordinateSystem> _cs;
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osg::Matrixd _geoTransform;
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osg::BoundingBox _extents;
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unsigned int _numValuesX;
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unsigned int _numValuesY;
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unsigned int _numValuesZ;
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};
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struct DestinationData : public osg::Referenced, SpatialProperties
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{
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DestinationData():
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_minDistance(0.0),
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_maxDistance(FLT_MAX) {}
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typedef std::vector< osg::ref_ptr<osg::Node> > ModelList;
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float _minDistance;
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float _maxDistance;
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osg::ref_ptr<osg::Image> _image;
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osg::ref_ptr<osg::HeightField> _heightField;
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ModelList _models;
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};
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struct SourceData : public osg::Referenced, public SpatialProperties
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{
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SourceData(Source* source=0):
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_source(source),
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_hasGCPs(false),
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_gdalDataSet(0) {}
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virtual ~SourceData()
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{
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if (_gdalDataSet) GDALClose(_gdalDataSet);
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}
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static SourceData* readData(Source* source);
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osg::BoundingBox getExtents(const osgTerrain::CoordinateSystem* cs) const;
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const SpatialProperties& computeSpatialProperties(const osgTerrain::CoordinateSystem* cs) const;
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bool intersects(const SpatialProperties& sp) const;
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void read(DestinationData& destination);
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void readImage(DestinationData& destination);
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void readHeightField(DestinationData& destination);
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void readModels(DestinationData& destination);
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Source* _source;
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bool _hasGCPs;
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osg::ref_ptr<osg::Node> _model;
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GDALDataset* _gdalDataSet;
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typedef std::map<const osgTerrain::CoordinateSystem*,SpatialProperties> SpatialPropertiesMap;
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mutable SpatialPropertiesMap _spatialPropertiesMap;
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};
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class Source : public osg::Referenced, public SpatialProperties
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{
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public:
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enum Type
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{
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IMAGE,
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HEIGHT_FIELD,
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MODEL
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};
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enum ParameterPolicy
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{
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PREFER_CONFIG_SETTINGS,
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PREFER_FILE_SETTINGS
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};
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Source():
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_type(IMAGE),
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_sortValue(0.0),
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_temporaryFile(false),
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_coordinateSystemPolicy(PREFER_FILE_SETTINGS),
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_geoTransformPolicy(PREFER_FILE_SETTINGS)
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{}
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Source(Type type, const std::string& filename):
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_type(type),
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_sortValue(0.0),
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_filename(filename),
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_temporaryFile(false),
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_coordinateSystemPolicy(PREFER_FILE_SETTINGS),
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_geoTransformPolicy(PREFER_FILE_SETTINGS)
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{}
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void setSortValue(double s) { _sortValue = s; }
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double getSortValue() const { return _sortValue; }
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void setSortValueFromSourceDataResolution();
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void setType(Type type) { _type = type; }
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Type getType() const { return _type; }
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void setFileName(const std::string& filename) { _filename = filename; }
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const std::string& getFileName() const { return _filename; }
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void setTemporaryFile(bool temporaryFile) { _temporaryFile = temporaryFile; }
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bool getTemporaryFile() const { return _temporaryFile; }
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void setCoordinateSystemPolicy(ParameterPolicy policy) { _coordinateSystemPolicy = policy; }
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void setCoordinateSystem(osgTerrain::CoordinateSystem* cs) { _cs = cs; }
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osgTerrain::CoordinateSystem* getCoordinateSystem() { return _cs.get(); }
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void setGeoTransformPolicy(ParameterPolicy policy) { _geoTransformPolicy = policy; }
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void setGeoTransform(osg::Matrixd& transform) { _geoTransform = transform; }
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osg::Matrixd& getGeoTransform() { return _geoTransform; }
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void setSourceData(SourceData* data) { _sourceData = data; if (_sourceData.valid()) _sourceData->_source = this; }
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SourceData* getSourceData() { return _sourceData.get(); }
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bool intersects(const SpatialProperties& sp) const
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{
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return _sourceData.valid()?_sourceData->intersects(sp):false;
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}
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void loadSourceData();
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bool needReproject(const osgTerrain::CoordinateSystem* cs) const;
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bool needReproject(const osgTerrain::CoordinateSystem* cs, double minResolution, double maxResolution) const;
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Source* doReproject(const std::string& filename, osgTerrain::CoordinateSystem* cs, double targetResolution=0.0) const;
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void buildOverviews();
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struct ResolutionPair
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{
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ResolutionPair():
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_resX(0.0),_resY(0.0) {}
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ResolutionPair(double x,double y):
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_resX(x),_resY(y) {}
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bool operator < (const ResolutionPair& rhs) const
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{
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double minLHS = osg::minimum(_resX,_resY);
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double minRHS = osg::minimum(rhs._resX,rhs._resY);
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return minLHS<minRHS;
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}
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double _resX;
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double _resY;
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};
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typedef std::vector<ResolutionPair> ResolutionList;
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void addRequiredResolution(double resX, double resY) { _requiredResolutions.push_back(ResolutionPair(resX,resY)); }
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void setRequiredResolutions(ResolutionList& resolutions) { _requiredResolutions = resolutions; }
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ResolutionList& getRequiredResolutions() { return _requiredResolutions; }
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const ResolutionList& getRequiredResolutions() const { return _requiredResolutions; }
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void consolodateRequiredResolutions();
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protected:
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Type _type;
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double _sortValue;
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std::string _filename;
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bool _temporaryFile;
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ParameterPolicy _coordinateSystemPolicy;
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ParameterPolicy _geoTransformPolicy;
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osg::ref_ptr<SourceData> _sourceData;
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ResolutionList _requiredResolutions;
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};
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enum CompositeType
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{
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GROUP,
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LOD,
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PAGED_LOD
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};
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class CompositeSource : public osg::Referenced, public SpatialProperties
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{
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public:
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CompositeSource(CompositeType type=GROUP):_type(type) {};
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typedef std::vector< osg::ref_ptr<Source> > SourceList;
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typedef std::vector< osg::ref_ptr< CompositeSource> > ChildList;
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void setType(CompositeType type) { _type = type; }
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CompositeType getType() const { return _type; }
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void setSortValueFromSourceDataResolution();
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void sort();
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class iterator
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{
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public:
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enum IteratorMode
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{
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ACTIVE,
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ALL
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};
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iterator(CompositeSource* composite=0,IteratorMode mode=ALL):
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_iteratorMode(mode)
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{
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if (composite)
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{
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_positionStack.push_back(IteratorPosition(composite));
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}
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}
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iterator(const iterator& rhs):
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_positionStack(rhs._positionStack) {}
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iterator& operator = (const iterator& rhs)
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{
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if (&rhs==this) return *this;
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_positionStack = rhs._positionStack;
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}
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bool operator == (const iterator& rhs) const
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{
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return _positionStack == rhs._positionStack;
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}
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bool operator != (const iterator& rhs) const
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{
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return _positionStack != rhs._positionStack;
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}
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bool valid() const
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{
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return !_positionStack.empty() && _positionStack.back().valid();
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}
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CompositeSource& operator *()
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{
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return *(valid()?_positionStack.back().current():0);
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}
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CompositeSource* operator ->()
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{
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return valid()?_positionStack.back().current():0;
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}
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const CompositeSource& operator *() const
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{
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return *(valid()?_positionStack.back().current():0);
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}
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const CompositeSource* operator ->() const
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{
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return valid()?_positionStack.back().current():0;
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}
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iterator& operator++()
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{
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advance();
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return *this;
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}
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iterator operator++(int)
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{
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iterator tmp=*this;
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advance();
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return tmp;
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}
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bool advance()
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{
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if (_positionStack.empty()) return false;
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// simple advance to the next source
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if (_positionStack.back().advance())
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{
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if (_positionStack.back().current())
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{
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_positionStack.push_back(IteratorPosition(_positionStack.back().current()));
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return advance();
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}
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}
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_positionStack.pop_back();
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return advance();
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}
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protected:
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struct IteratorPosition
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{
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IteratorPosition(CompositeSource* composite):
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_composite(composite),
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_index(-1) {}
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IteratorPosition(const IteratorPosition& rhs):
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_composite(rhs._composite),
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_index(rhs._index) {}
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IteratorPosition& operator = (const IteratorPosition& rhs)
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{
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_composite = rhs._composite;
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_index = rhs._index;
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return *this;
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}
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bool operator == (const IteratorPosition& rhs) const
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{
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return _composite == rhs._composite && _index == rhs._index;
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}
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bool operator != (const IteratorPosition& rhs) const
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{
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return _composite != rhs._composite || _index != rhs._index;
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}
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CompositeSource* current()
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{
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if (_index==-1) return _composite;
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else return (_index>=0 && _index < (int)_composite->_children.size())?_composite->_children[_index].get():0;
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}
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const CompositeSource* current() const
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{
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if (_index==-1) return _composite;
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else return (_index>=0 && _index < (int)_composite->_children.size())?_composite->_children[_index].get():0;
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}
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bool valid() const
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{
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return _composite &&
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_index < (int)_composite->_children.size();
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}
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inline bool advance()
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{
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return advanceToNextChild(*_composite,_index);
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}
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inline bool isActive(const CompositeSource& composite,int index)
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{
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return true;
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}
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inline bool advanceToNextChild(CompositeSource& composite, int& index)
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{
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++index;
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while (index<(int)composite._children.size())
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{
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if (isActive(composite,index)) return true;
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++index;
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}
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return false;
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}
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CompositeSource* _composite;
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int _index;
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};
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typedef std::vector<IteratorPosition> PositionStack;
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IteratorMode _iteratorMode;
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PositionStack _positionStack;
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};
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template<class T>
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class base_source_iterator
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{
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public:
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base_source_iterator(CompositeSource* composite=0, T advancer=T()):
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_advancer(advancer),
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_compositeIterator(composite),
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_sourceIndex(-1)
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{
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advance();
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}
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base_source_iterator(const base_source_iterator& rhs):
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_advancer(rhs._advancer),
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_compositeIterator(rhs._compositeIterator),
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_sourceIndex(rhs._sourceIndex) {}
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base_source_iterator& operator = (const base_source_iterator& rhs)
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{
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if (&rhs==this) return *this;
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_advancer = rhs._advancer;
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_compositeIterator = rhs._compositeIterator;
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_sourceIndex = rhs._sourceIndex;
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}
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bool operator == (const base_source_iterator& rhs) const
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{
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return _compositeIterator == rhs._compositeIterator &&
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_sourceIndex == rhs._sourceIndex;
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}
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bool operator != (const base_source_iterator& rhs) const
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{
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return _compositeIterator != rhs._compositeIterator ||
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_sourceIndex != rhs._sourceIndex;
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}
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bool valid() const
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{
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return _compositeIterator.valid() && _sourceIndex < (int)_compositeIterator->_sourceList.size();
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}
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osg::ref_ptr<Source>& operator *()
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{
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return valid()?_compositeIterator->_sourceList[_sourceIndex]:_nullSource;
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}
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osg::ref_ptr<Source>* operator ->()
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{
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return &(valid()?_compositeIterator->_sourceList[_sourceIndex]:_nullSource);
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}
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base_source_iterator& operator++()
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{
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advance();
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return *this;
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}
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base_source_iterator operator++(int)
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{
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base_source_iterator tmp=*this;
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advance();
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return tmp;
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}
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bool advance()
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{
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if (!_compositeIterator.valid()) return false;
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if (_advancer.advanceToNextSource(*_compositeIterator,_sourceIndex)) return true;
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// at end of current CompositeSource, so need to advance to new one.
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_sourceIndex = -1;
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++_compositeIterator;
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return advance();
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}
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protected:
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T _advancer;
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iterator _compositeIterator;
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int _sourceIndex;
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osg::ref_ptr<Source> _nullSource;
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};
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struct DefaultSourceAdvancer
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{
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DefaultSourceAdvancer() {}
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bool isActive(const CompositeSource& composite,int index)
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{
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return true;
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}
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inline bool advanceToNextSource(const CompositeSource& composite, int& index)
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{
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return ++index<(int)composite._sourceList.size();
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}
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};
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struct LODSourceAdvancer
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{
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LODSourceAdvancer(float targetResolution=0.0f):
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_targetResolution(targetResolution) {}
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inline bool advanceToNextSource(const CompositeSource& composite, int& index)
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{
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if (composite.getType()==GROUP)
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{
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return (++index<(int)composite._sourceList.size());
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}
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else
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{
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if (composite._sourceList.empty()) return false;
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if (index!=-1) return false; // we've already traversed this composite, only ever one valid LOD.
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// find source with resolution closest to target
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int foundIndex = 0;
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float closestResolution = fabsf(composite._sourceList[0]->getSortValue()-_targetResolution);
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for(int i=1;i<(int)composite._sourceList.size();++i)
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{
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float delta = fabsf(composite._sourceList[i]->getSortValue()-_targetResolution);
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if (delta<closestResolution)
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{
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foundIndex = i;
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closestResolution = delta;
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}
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}
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if (foundIndex==index) return false;
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index = foundIndex;
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return true;
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}
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}
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float _targetResolution;
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};
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typedef base_source_iterator<DefaultSourceAdvancer> source_iterator;
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typedef base_source_iterator<LODSourceAdvancer> source_lod_iterator;
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CompositeType _type;
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SourceList _sourceList;
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ChildList _children;
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};
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class DestinationTile : public osg::Referenced, public SpatialProperties
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{
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public:
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|
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enum Position
|
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{
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LEFT = 0,
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LEFT_BELOW = 1,
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BELOW = 2,
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BELOW_RIGHT = 3,
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RIGHT = 4,
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RIGHT_ABOVE = 5,
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ABOVE = 6,
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ABOVE_LEFT = 7,
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NUMBER_OF_POSITIONS = 8
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};
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DestinationTile();
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void computeNeighboursFromQuadMap();
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void setNeighbours(DestinationTile* left, DestinationTile* left_below,
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DestinationTile* below, DestinationTile* below_right,
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DestinationTile* right, DestinationTile* right_above,
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DestinationTile* above, DestinationTile* above_left);
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void checkNeighbouringTiles();
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void setMaximumImagerySize(unsigned int maxNumColumns,unsigned int maxNumRows)
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{
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_imagery_maxNumColumns = maxNumColumns;
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_imagery_maxNumRows = maxNumRows;
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}
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void setMaximumTerrainSize(unsigned int maxNumColumns,unsigned int maxNumRows)
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{
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_terrain_maxNumColumns = maxNumColumns;
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_terrain_maxNumRows = maxNumRows;
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}
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void computeMaximumSourceResolution(CompositeSource* sourceGraph);
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bool computeImageResolution(unsigned int& numColumns, unsigned int& numRows, double& resX, double& resY);
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bool computeTerrainResolution(unsigned int& numColumns, unsigned int& numRows, double& resX, double& resY);
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|
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void allocate();
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|
|
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void addRequiredResolutions(CompositeSource* sourceGraph);
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|
|
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void readFrom(CompositeSource* sourceGraph);
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|
|
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void equalizeCorner(Position position);
|
|
void equalizeEdge(Position position);
|
|
|
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void equalizeBoundaries();
|
|
|
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void optimizeResolution();
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|
|
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osg::Node* createScene();
|
|
|
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|
|
std::string _name;
|
|
|
|
DataSet* _dataSet;
|
|
|
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osg::ref_ptr<DestinationData> _imagery;
|
|
osg::ref_ptr<DestinationData> _terrain;
|
|
osg::ref_ptr<DestinationData> _models;
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|
|
|
DestinationTile* _neighbour[8];
|
|
bool _equalized[8];
|
|
|
|
|
|
unsigned int _imagery_maxNumColumns;
|
|
unsigned int _imagery_maxNumRows;
|
|
float _imagery_maxSourceResolutionX;
|
|
float _imagery_maxSourceResolutionY;
|
|
|
|
unsigned int _terrain_maxNumColumns;
|
|
unsigned int _terrain_maxNumRows;
|
|
float _terrain_maxSourceResolutionX;
|
|
float _terrain_maxSourceResolutionY;
|
|
|
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unsigned int _level;
|
|
unsigned int _tileX;
|
|
unsigned int _tileY;
|
|
|
|
};
|
|
|
|
class CompositeDestination : public osg::Referenced, public SpatialProperties
|
|
{
|
|
public:
|
|
|
|
CompositeDestination():
|
|
_type(GROUP),
|
|
_maxVisibleDistance(FLT_MAX) {}
|
|
|
|
CompositeDestination(osgTerrain::CoordinateSystem* cs, const osg::BoundingBox& extents):
|
|
SpatialProperties(cs,extents),
|
|
_type(GROUP),
|
|
_maxVisibleDistance(FLT_MAX) {}
|
|
|
|
void computeNeighboursFromQuadMap();
|
|
|
|
void addRequiredResolutions(CompositeSource* sourceGraph);
|
|
|
|
void readFrom(CompositeSource* sourceGraph);
|
|
|
|
void equalizeBoundaries();
|
|
|
|
osg::Node* createScene();
|
|
|
|
typedef std::vector< osg::ref_ptr<DestinationTile> > TileList;
|
|
typedef std::vector< osg::ref_ptr<CompositeDestination> > ChildList;
|
|
|
|
CompositeType _type;
|
|
TileList _tiles;
|
|
ChildList _children;
|
|
float _maxVisibleDistance;
|
|
|
|
};
|
|
|
|
|
|
typedef std::map<unsigned int,DestinationTile*> Column;
|
|
typedef std::map<unsigned int,Column> Level;
|
|
typedef std::map<unsigned int,Level> QuadMap;
|
|
|
|
void insertTileToQuadMap(DestinationTile* tile)
|
|
{
|
|
_quadMap[tile->_level][tile->_tileX][tile->_tileY] = tile;
|
|
}
|
|
|
|
DestinationTile* getTile(unsigned int level,unsigned int X, unsigned int Y)
|
|
{
|
|
QuadMap::iterator levelItr = _quadMap.find(level);
|
|
if (levelItr==_quadMap.end()) return 0;
|
|
|
|
Level::iterator columnItr = levelItr->second.find(X);
|
|
if (columnItr==levelItr->second.end()) return 0;
|
|
|
|
Column::iterator rowItr = columnItr->second.find(Y);
|
|
if (rowItr==columnItr->second.end()) return 0;
|
|
else return rowItr->second;
|
|
}
|
|
|
|
public:
|
|
|
|
|
|
DataSet();
|
|
|
|
void addSource(Source* source);
|
|
void addSource(CompositeSource* composite);
|
|
|
|
void loadSources();
|
|
|
|
void setVerticalScale(float verticalScale) { _verticalScale=verticalScale; }
|
|
float getVerticalScale() const { return _verticalScale; }
|
|
|
|
void setDestinationCoordinateSystem(const std::string& wellKnownText) { _coordinateSystem = new osgTerrain::CoordinateSystem(wellKnownText); }
|
|
void setDestinationCoordinateSystem(osgTerrain::CoordinateSystem* cs) { _coordinateSystem = cs; }
|
|
|
|
void setDestinationExtents(const osg::BoundingBox& extents) { _extents = extents; }
|
|
|
|
void setDestinationGeoTransform(const osg::Matrixd& geoTransform) { _geoTransform = geoTransform; }
|
|
|
|
void setDestinationTileBaseName(const std::string& basename) { _tileBasename = basename; }
|
|
void setDestinationTileExtension(const std::string& extension) { _tileExtension = _tileExtension; }
|
|
|
|
CompositeDestination* createDestinationGraph(osgTerrain::CoordinateSystem* cs,
|
|
const osg::BoundingBox& extents,
|
|
unsigned int maxImageSize,
|
|
unsigned int maxTerrainSize,
|
|
unsigned int currentLevel,
|
|
unsigned int currentX,
|
|
unsigned int currentY,
|
|
unsigned int maxNumLevels);
|
|
|
|
|
|
void computeDestinationGraphFromSources(unsigned int numLevels);
|
|
void updateSourcesForDestinationGraphNeeds();
|
|
void populateDestinationGraphFromSources();
|
|
|
|
void createDestination(unsigned int numLevels);
|
|
|
|
void writeDestination(const std::string& filename);
|
|
|
|
osg::Node* getDestinationRootNode() { return _rootNode.get(); }
|
|
|
|
|
|
protected:
|
|
|
|
virtual ~DataSet() {}
|
|
|
|
void init();
|
|
|
|
osg::ref_ptr<CompositeSource> _sourceGraph;
|
|
|
|
osg::ref_ptr<CompositeDestination> _destinationGraph;
|
|
|
|
QuadMap _quadMap;
|
|
|
|
float _verticalScale;
|
|
|
|
osg::ref_ptr<osgTerrain::CoordinateSystem> _coordinateSystem;
|
|
osg::Matrixd _geoTransform;
|
|
osg::BoundingBox _extents;
|
|
std::string _tileBasename;
|
|
std::string _tileExtension;
|
|
osg::Vec4 _defaultColour;
|
|
|
|
|
|
osg::ref_ptr<osg::Node> _rootNode;
|
|
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|