Added triangulation routine

lib/osmparser/include/osmrelation.hpp

@@ -0,0 +1,43 @@
+#pragma once
+#include <vector>
+#include <memory>
+
+#include <util.hpp>
+#include <osmtag.hpp>
+#include <osmimember.hpp>
+
+namespace osmp
+{
+	class Object;
+
+	class Relation : public IMember
+	{
+	public:
+		typedef struct sMember {
+			std::shared_ptr<IMember> member;
+			std::string role;
+		} Member;
+
+	public:
+		Relation(const tinyxml2::XMLElement* xml, Object* parent);
+
+		std::string GetRelationType();
+
+		const std::vector<Member>& GetNodes() const;
+		size_t GetNodesSize() const;
+		const Member& GetNode(size_t index) const;
+
+		const std::vector<Member>& GetWays() const;
+		size_t GetWaysSize() const;
+		const Member& GetWay(size_t index) const;
+
+		bool HasNullMembers() const { return hasNullMembers; }
+
+	private:
+		std::string relationType;
+		bool hasNullMembers;
+
+		std::vector<Member> nodes;
+		std::vector<Member> ways;
+	};
+}