port from perforce

meshToolsV5/TestApp/ObjExporter.h

@@ -0,0 +1,44 @@
+#pragma once
+
+#if _DEBUG
+
+#include "../src/Lib/mt/mt.h"
+#include <sstream>
+#include <string>
+
+class Mesh;
+
+class ObjExporter
+{
+public:
+	static void Export(mt::Mesh* mesh, const std::string& filePath);
+
+	ObjExporter(mt::Mesh* mesh);
+	void Export(const std::string& filePath);
+	void WriteFaceGroups(std::ostringstream& builder, std::ostringstream& mtlBuilder);
+	void WriteFaces(std::ostringstream& builder, const mt::FaceList& faces);
+	void WritePositions(std::ostringstream& builder);
+	void WriteNormals(std::ostringstream& builder);
+	void WriteUVs(std::ostringstream& builder);
+
+private:
+	std::string replace(const std::string &input, const std::string &search, const std::string &replace)
+	{
+		auto s = input;
+		for (size_t pos = 0;; pos += replace.length())
+		{
+			// Locate the substring to replace
+			pos = s.find(search, pos);
+			if (pos == std::string::npos) break;
+			// Replace by erasing and inserting
+			s.erase(pos, search.length());
+			s.insert(pos, replace);
+		}
+
+		return s;
+	}
+private:
+	mt::Mesh* mesh;
+};
+
+#endif