102 lines
2.7 KiB
C++
102 lines
2.7 KiB
C++
#ifndef OSM_H
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#define OSM_H
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#include <vector>
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#include <string>
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#include <map>
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#include <set>
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#include <utility>
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struct bounds
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{
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double w,s,e,n;
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bounds() { w=-180; s=-90; e=180; n=90; }
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bounds(double w, double s, double e, double n )
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{
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this->w = w;
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this->s = s;
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this->e = e;
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this->n = n;
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}
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};
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class polygon_types
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{
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public:
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std::vector<std::pair<std::string,std::string> > ptypes;
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polygon_types()
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{
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ptypes.push_back(std::pair<std::string,std::string>("natural","wood"));
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ptypes.push_back(std::pair<std::string,std::string>("natural","water"));
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ptypes.push_back(std::pair<std::string,std::string>("natural","heath"));
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ptypes.push_back(std::pair<std::string,std::string>("natural","marsh"));
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ptypes.push_back(std::pair<std::string,std::string>("military",
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"danger_area"));
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ptypes.push_back(std::pair<std::string,std::string>
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("landuse","forest"));
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ptypes.push_back(std::pair<std::string,std::string>
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("landuse","industrial"));
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}
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};
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struct osm_item
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{
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long id;
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std::map<std::string,std::string> keyvals;
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virtual std::string to_string();
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virtual ~osm_item() { }
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};
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struct osm_node: public osm_item
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{
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double lat, lon;
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std::string to_string();
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};
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struct osm_way: public osm_item
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{
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std::vector<osm_node*> nodes;
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std::string to_string();
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bounds get_bounds();
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bool is_polygon();
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static polygon_types ptypes;
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};
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class osm_dataset
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{
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private:
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int next_item_mode;
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enum {Node, Way };
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std::vector<osm_node*>::iterator node_i;
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std::vector<osm_way*>::iterator way_i;
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std::vector<osm_node*> nodes;
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std::vector<osm_way*> ways;
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public:
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osm_dataset() { node_i=nodes.begin(); way_i=ways.begin();
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next_item_mode=Node; }
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osm_dataset(const char* name)
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{ node_i=nodes.begin(); way_i=ways.begin();
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next_item_mode=Node; load(name); }
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bool load(const char* name,const std::string& parser="libxml2");
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bool load_from_url(const std::string&,const std::string&,
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const std::string& parser="libxml2");
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~osm_dataset();
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void add_node(osm_node* n) { nodes.push_back(n); }
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void add_way(osm_way* w) { ways.push_back(w); }
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std::string to_string();
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bounds get_bounds();
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std::set<std::string> get_keys();
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void rewind_nodes() { node_i=nodes.begin(); }
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void rewind_ways() { way_i=ways.begin(); }
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void rewind() { rewind_nodes(); rewind_ways(); next_item_mode=Node; }
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osm_node * next_node();
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osm_way * next_way();
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osm_item * next_item();
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bool current_item_is_node() { return next_item_mode==Node; }
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bool current_item_is_way() { return next_item_mode==Way; }
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};
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#endif // OSM_H
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