major update for tin.h

demo.cpp

@@ -15,9 +15,19 @@ int main(int argc, char const *argv[])
 	}
 	infile.close();
 
+	std::vector<double> err_records;
 	std::vector<vertex2dc*> tin_vert;
 	std::vector<triangle*> tin_ele;
-	dem2tin(topo, 0, 1000, 0, 1000, 10, 10, tin_vert, tin_ele, 1.0);
+	dem2tin(topo, 0, 1000, 0, 1000, 10, 10, tin_vert, tin_ele, 1.0, &err_records);
+
+	// Write a log file
+	std::ofstream logfile("topo_TIN.log");
+	logfile << "# Insertion Maxi-Error\n";
+	for (int i = 0; i < err_records.size(); ++i)
+	{
+		logfile << i+1 << " " << err_records[i] << std::endl;
+	}
+	logfile.close();
 
 	// Write a Gmsh's .msh file
 	std::ofstream outfile("topo_TIN.msh");