/usr/include/osgEarthSymbology/Symbol is in libosgearth-dev 2.9.0+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/* osgEarth - Dynamic map generation toolkit for OpenSceneGraph
* Copyright 2016 Pelican Mapping
* http://osgearth.org
*
* osgEarth is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
*/
#ifndef OSGEARTHSYMBOLOGY_SYMBOL_H
#define OSGEARTHSYMBOLOGY_SYMBOL_H 1
#include <osgEarthSymbology/Common>
#include <osgEarthSymbology/Expression>
#include <osgEarth/Config>
#include <osgEarth/URI>
#include <osg/Referenced>
#include <vector>
namespace osgEarth { namespace Symbology
{
class Style;
/**
* Abstract base class for all Symbol types.
*/
class OSGEARTHSYMBOLOGY_EXPORT Symbol : public osg::Object
{
public:
/** Script expression, optionally implemented by symbolizers. */
optional<StringExpression>& script() { return _script; }
const optional<StringExpression>& script() const { return _script; }
/** URI context (relative paths, etc) associated wtih this symbol */
const URIContext& uriContext() const { return _uriContext; }
virtual Config getConfig() const;
virtual void mergeConfig(const Config& conf);
public:
/* methods required by osg::Object */
META_Object(osgEarthSymbology, Symbol);
Symbol(const Symbol& rhs,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
protected:
URIContext _uriContext;
optional<StringExpression> _script;
static bool match(const std::string& key, const char* pattern);
Symbol( const Config& conf =Config() );
virtual ~Symbol() { }
};
typedef std::vector<osg::ref_ptr<Symbol> > SymbolVector;
typedef std::vector<osg::ref_ptr<Symbol> > SymbolList;
/**
* A Factory that can create a Symbol from a Config
*/
class OSGEARTHSYMBOLOGY_EXPORT SymbolFactory : public osg::Referenced
{
public:
virtual Symbol* create( const Config& conf ) = 0;
virtual void parseSLD(const Config& c, Style& style) const = 0;
};
typedef std::list< osg::ref_ptr< SymbolFactory > > SymbolFactoryList;
/**
* A registry of Symbol plugins
*/
class OSGEARTHSYMBOLOGY_EXPORT SymbolRegistry : public osg::Referenced
{
public:
/**
* The singleton instance of the factory
*/
static SymbolRegistry* instance();
/*
* Adds a new SymbolFactory to the list
*/
void add( SymbolFactory* factory );
/**
* Creates a Symbol with the registered plugins from the given Config
*/
Symbol* create( const Config& conf );
/**
* Parses the given SLD config into the given Style using all of the registered symbols
*/
void parseSLD(const Config& c, Style& style) const;
protected:
SymbolRegistry();
SymbolFactoryList _factories;
};
template<class T>
struct SimpleSymbolFactory : public SymbolFactory
{
SimpleSymbolFactory(const std::string& key):_key(key){}
virtual Symbol* create(const Config& conf)
{
if (conf.key() == _key) return new T(conf);
return 0;
}
virtual void parseSLD(const Config& c, class Style& style) const
{
T::parseSLD( c, style );
}
std::string _key;
};
template<class T>
struct RegisterSymbolProxy
{
RegisterSymbolProxy( T* factory) { SymbolRegistry::instance()->add( factory ); }
RegisterSymbolProxy() { SymbolRegistry::instance()->add( new T ); }
};
#define OSGEARTH_REGISTER_SYMBOL( CLASSNAME )\
extern "C" void osgearth_symbol_##CLASSNAME(void) {} \
static osgEarth::Symbology::RegisterSymbolProxy<CLASSNAME> s_osgEarthRegisterSymbolProxy_##CLASSNAME;
#define USE_OSGEARTH_SYMBOL( CLASSNAME ) \
extern "C" void osgearth_symbol_##CLASSNAME(void); \
static osgDB::PluginFunctionProxy proxy_osgearth_symbol_##CLASSNAME(osgearth_symbol_##CLASSNAME);
#define OSGEARTH_REGISTER_SIMPLE_SYMBOL( KEY, CLASSNAME)\
extern "C" void osgearth_simple_symbol_##KEY(void) {} \
static osgEarth::Symbology::RegisterSymbolProxy< osgEarth::Symbology::SimpleSymbolFactory<CLASSNAME> > s_osgEarthRegisterSymbolProxy_##CLASSNAME##KEY(new osgEarth::Symbology::SimpleSymbolFactory<CLASSNAME>(#KEY));
#define USE_OSGEARTH_SIMPLE_SYMBOL( KEY ) \
extern "C" void osgearth_simple_symbol_##KEY(void); \
static osgDB::PluginFunctionProxy proxy_osgearth_simple_symbol_##KEY(osgearth_simple_symbol_##KEY);
} } // namespace osgEarth::Symbology
#endif // OSGEARTH_SYMBOLOGY_SYMBOL_H
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