new leaner feature impl (shared context)
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Artem Pavlenko
parent
aad26ace9f
commit
500bac1cf8
1 changed files with 86 additions and 105 deletions
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@ -37,57 +37,81 @@
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#endif
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#include <boost/utility.hpp>
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#include <boost/shared_ptr.hpp>
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#include <boost/scoped_ptr.hpp>
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// stl
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#include <map>
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namespace mapnik {
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typedef boost::shared_ptr<raster> raster_ptr;
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typedef boost::associative_property_map<
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std::map<std::string,value
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> > properties;
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template <typename T1,typename T2>
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struct feature : public properties,
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private boost::noncopyable
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{
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public:
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typedef T1 geometry_type;
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typedef T2 raster_type;
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typedef std::map<std::string,value>::value_type value_type;
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typedef std::map<std::string,value>::size_type size_type;
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typedef std::map<std::string,value>::difference_type difference_type;
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private:
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int id_;
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boost::ptr_vector<geometry_type> geom_cont_;
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raster_type raster_;
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std::map<std::string,value> props_;
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public:
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typedef std::map<std::string,value>::iterator iterator;
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typedef std::map<std::string,value>::const_iterator const_iterator;
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explicit feature(int id)
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: properties(props_),
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id_(id),
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geom_cont_(),
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raster_() {}
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int id() const
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{
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return id_;
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}
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void set_id(int id)
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typedef boost::shared_ptr<raster> raster_ptr;
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typedef std::map<std::string,int> map_type;
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typedef boost::associative_property_map<map_type> base_type;
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class feature_impl;
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class context : private boost::noncopyable,
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public base_type
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{
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friend class feature_impl;
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public:
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context()
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: base_type(mapping_) {}
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void insert(std::string const& name,int index)
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{
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id_ = id;
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mapping_.insert(std::make_pair(name,index));
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}
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private:
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map_type mapping_;
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};
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typedef boost::shared_ptr<context> context_ptr;
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class feature_impl : private boost::noncopyable
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{
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public:
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typedef mapnik::value value_type;
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typedef std::vector<value_type> cont_type;
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feature_impl(context_ptr const& ctx, int id)
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: id_(id),
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ctx_(ctx),
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data_(ctx_->mapping_.size())
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{}
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inline int id() const { return id_;}
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void set_id(int id) { id_ = id;}
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template <typename T>
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void set(std::string const& key, T const& val)
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{
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map_type::const_iterator itr = ctx_->mapping_.find(key);
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if (itr != ctx_->mapping_.end())
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{
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data_[itr->second] = value(val);
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}
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}
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value_type const& get(std::string const& key) const
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{
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map_type::const_iterator itr = ctx_->mapping_.find(key);
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if (itr != ctx_->mapping_.end())
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{
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return data_[itr->second];
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}
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static const value_type default_value;
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return default_value;
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}
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boost::ptr_vector<geometry_type> & paths()
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{
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return geom_cont_;
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}
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void add_geometry(geometry_type * geom)
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{
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geom_cont_.push_back(geom);
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@ -108,92 +132,49 @@ public:
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return geom_cont_[index];
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}
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box2d<double> envelope() const
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{
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box2d<double> result;
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for (unsigned i=0;i<num_geometries();++i)
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{
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geometry_type const& geom = get_geometry(i);
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if (i==0)
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{
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box2d<double> box = geom.envelope();
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result.init(box.minx(),box.miny(),box.maxx(),box.maxy());
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}
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else
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{
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result.expand_to_include(geom.envelope());
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}
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}
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return result;
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}
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const raster_type& get_raster() const
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const raster_ptr& get_raster() const
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{
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return raster_;
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}
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void set_raster(raster_type const& raster)
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void set_raster(raster_ptr const& raster)
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{
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raster_=raster;
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}
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std::map<std::string,value> const& props() const
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{
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return props_;
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}
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std::map<std::string,value>& props()
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{
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return props_;
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raster_ = raster;
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}
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iterator begin()
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{
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return props_.begin();
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}
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iterator end()
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{
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return props_.end();
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}
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const_iterator begin() const
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{
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return props_.begin();
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}
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const_iterator end() const
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{
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return props_.end();
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}
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const_iterator find(std::string const& key) const
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{
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return props_.find(key);
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}
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std::string to_string() const
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{
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{
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std::stringstream ss;
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ss << "feature "
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<< id_ << " (" << std::endl;
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for (std::map<std::string,value>::const_iterator itr=props_.begin();
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itr != props_.end();++itr)
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ss << "Feature (" << std::endl;
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map_type::const_iterator itr = ctx_->mapping_.begin();
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map_type::const_iterator end = ctx_->mapping_.end();
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for ( ;itr!=end; ++itr)
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{
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ss << " " << itr->first << ":" << itr->second << std::endl;
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ss << " " << itr->first << ":" << data_[itr->second] << std::endl;
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}
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ss << ")" << std::endl;
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return ss.str();
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}
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private:
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context_ptr ctx_;
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int id_;
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boost::ptr_vector<geometry_type> geom_cont_;
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raster_ptr raster_;
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cont_type data_;
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};
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typedef feature<geometry_type,raster_ptr> Feature;
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inline std::ostream& operator<< (std::ostream & out,Feature const& f)
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inline std::ostream& operator<< (std::ostream & out,feature_impl const& f)
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{
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out << f.to_string();
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return out;
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}
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typedef feature_impl Feature;
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}
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#endif // MAPNIK_FEATURE_HPP
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