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Added osgDB::ReaderWriter::Options class to the ReaderWriter base class, support

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for settings options in osgDB::Registry, and added the paramter to all of the
reaader/writer plugins.  The Options structure by default has an string attached
for packing basic options, however, it also can be subclassed to encapsulate
any users defined option data. In the later case both the client code *and*
the plugin need to be aware of subclass, the plugin will need to use
dynamic_cast<> to assertain its type.
This commit is contained in:
Robert Osfield
2001-10-14 17:54:25 +00:00
parent e719569b42
commit 06dafa487e
21 changed files with 75 additions and 42 deletions
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31
include/osgDB/ReaderWriter
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@@ -22,13 +22,32 @@ class OSGDB_EXPORT ReaderWriter : public osg::Referenced
virtual const char* className() = 0;
virtual bool acceptsExtension(const std::string& /*extension*/) { return false; }
virtual osg::Object* readObject(const std::string& /*fileName*/) { return NULL; }
virtual osg::Image* readImage(const std::string& /*fileName*/) { return NULL; }
virtual osg::Node* readNode(const std::string& /*fileName*/) { return NULL; }
class Options : public osg::Referenced
{
public:
virtual bool writeObject(const osg::Object& /*obj*/,const std::string& /*fileName*/) {return false; }
virtual bool writeImage(const osg::Image& /*image*/,const std::string& /*fileName*/) {return false; }
virtual bool writeNode(const osg::Node& /*node*/,const std::string& /*fileName*/) { return false; }
Options() {}
Options(const std::string& str):_str(str) {}
void setOptionString(const std::string& str) { _str = str; }
const std::string& getOptionString() const { return _str; }
protected:
virtual ~Options() {}
std::string _str;
};
virtual osg::Object* readObject(const std::string& /*fileName*/,const Options* =NULL) { return NULL; }
virtual osg::Image* readImage(const std::string& /*fileName*/,const Options* =NULL) { return NULL; }
virtual osg::Node* readNode(const std::string& /*fileName*/,const Options* =NULL) { return NULL; }
virtual bool writeObject(const osg::Object& /*obj*/,const std::string& /*fileName*/,const Options* =NULL) {return false; }
virtual bool writeImage(const osg::Image& /*image*/,const std::string& /*fileName*/,const Options* =NULL) {return false; }
virtual bool writeNode(const osg::Node& /*node*/,const std::string& /*fileName*/,const Options* =NULL) { return false; }
};

8
include/osgDB/Registry
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@@ -85,6 +85,11 @@ class OSGDB_EXPORT Registry
void setCreateNodeFromImage(bool flag) { _createNodeFromImage = flag; }
bool getCreateNodeFromImage() const { return _createNodeFromImage; }
void setOptions(ReaderWriter::Options* opt) { _options = opt; }
ReaderWriter::Options* getOptions() { return _options.get(); }
const ReaderWriter::Options* getOptions() const { return _options.get(); }
private:
typedef std::map<std::string,osg::ref_ptr<DotOsgWrapper> > DotOsgWrapperMap;
@@ -120,6 +125,9 @@ class OSGDB_EXPORT Registry
// map to alias to extensions to plugins.
ExtensionAliasMap _extAliasMap;
// options to pass to reader writers.
osg::ref_ptr<ReaderWriter::Options> _options;
};