FGFS-4.1/OpenSceneGraph
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Added prelimnary KdTree data structure and automatic kdtree build support

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into osgDB::Registry/osgTerrain so that newly created subgraphs can have 
KdTree built on all osg::Geometry automatically on load/creation.
This commit is contained in:
Robert Osfield
2008-07-04 15:57:48 +00:00
parent bc1032653c
commit 44d144997e
8 changed files with 315 additions and 11 deletions
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45
include/osgDB/Registry
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@@ -16,6 +16,7 @@
#include <osg/ref_ptr>
#include <osg/ArgumentParser>
#include <osg/KdTree>
#include <osgDB/DynamicLibrary>
#include <osgDB/ReaderWriter>
@@ -130,7 +131,6 @@ class OSGDB_EXPORT Registry : public osg::Referenced
bool writeObject(const osg::Object& obj,Output& fw);
class ReadFileCallback : public virtual osg::Referenced
{
public:
@@ -188,8 +188,13 @@ class OSGDB_EXPORT Registry : public osg::Referenced
ReaderWriter::ReadResult readObject(const std::string& fileName,const ReaderWriter::Options* options)
{
if (_readFileCallback.valid()) return _readFileCallback->readObject(fileName,options);
else return readObjectImplementation(fileName,options);
ReaderWriter::ReadResult result = _readFileCallback.valid() ?
_readFileCallback->readObject(fileName,options) :
readObjectImplementation(fileName,options);
buildKdTreeIfRequired(result, options);
return result;
}
ReaderWriter::ReadResult readObjectImplementation(const std::string& fileName,const ReaderWriter::Options* options);
@@ -209,8 +214,13 @@ class OSGDB_EXPORT Registry : public osg::Referenced
ReaderWriter::ReadResult readNode(const std::string& fileName,const ReaderWriter::Options* options)
{
if (_readFileCallback.valid()) return _readFileCallback->readNode(fileName,options);
else return readNodeImplementation(fileName,options);
ReaderWriter::ReadResult result = _readFileCallback.valid() ?
_readFileCallback->readNode(fileName,options) :
readNodeImplementation(fileName,options);
buildKdTreeIfRequired(result, options);
return result;
}
ReaderWriter::ReadResult readNodeImplementation(const std::string& fileName,const ReaderWriter::Options* options);
@@ -302,6 +312,26 @@ class OSGDB_EXPORT Registry : public osg::Referenced
ReaderWriter::WriteResult writeShaderImplementation(const osg::Shader& obj, const std::string& fileName,const ReaderWriter::Options* options);
inline void buildKdTreeIfRequired(ReaderWriter::ReadResult& result, const ReaderWriter::Options* options)
{
bool doKdTreeBuilder = (options && options->getBuildKdTreesHint()!=ReaderWriter::Options::NO_PREFERENCE) ?
options->getBuildKdTreesHint() == ReaderWriter::Options::BUILD_KDTREES :
_buildKdTreesHint == ReaderWriter::Options::BUILD_KDTREES;
if (doKdTreeBuilder && _kdTreeBuilder.valid() && result.validNode())
{
result.getNode()->accept(*_kdTreeBuilder);
}
}
void setBuildKdTreesHint(ReaderWriter::Options::BuildKdTreesHint hint) { _buildKdTreesHint = hint; }
ReaderWriter::Options::BuildKdTreesHint getBuildKdTreesHint() const { return _buildKdTreesHint; }
void setKdTreeBuilder(osg::KdTreeBuilder* builder) { _kdTreeBuilder = builder; }
osg::KdTreeBuilder* getKdTreeBuilder() { return _kdTreeBuilder.get(); }
void setCreateNodeFromImage(bool flag) { _createNodeFromImage = flag; }
bool getCreateNodeFromImage() const { return _createNodeFromImage; }
@@ -437,7 +467,10 @@ class OSGDB_EXPORT Registry : public osg::Referenced
/** get the attached library with specified name.*/
DynamicLibraryList::iterator getLibraryItr(const std::string& fileName);
bool _createNodeFromImage;
ReaderWriter::Options::BuildKdTreesHint _buildKdTreesHint;
osg::ref_ptr<osg::KdTreeBuilder> _kdTreeBuilder;
bool _createNodeFromImage;
osg::Object* readObject(DotOsgWrapperMap& dowMap,Input& fr);