From 1356ef626036ed1990f9dfe3fd666bab99364776 Mon Sep 17 00:00:00 2001
From: Edward Zhu <zhu.edward445@gmail.com>
Date: Fri, 17 Jun 2016 14:11:49 -0700
Subject: [PATCH] STL parser application complete

---
 src/dev/ezhu/STLParser/AppSTLParser.cpp | 89 +++++++++++++++++++++----
 1 file changed, 76 insertions(+), 13 deletions(-)

diff --git a/src/dev/ezhu/STLParser/AppSTLParser.cpp b/src/dev/ezhu/STLParser/AppSTLParser.cpp
index 4d0c18e74..b89df1330 100644
--- a/src/dev/ezhu/STLParser/AppSTLParser.cpp
+++ b/src/dev/ezhu/STLParser/AppSTLParser.cpp
@@ -2,7 +2,8 @@
 #include <fstream>
 #include <stdlib.h>
 #include <stdio.h>
-#include <string.h>
+#include <string>
+#include <math.h>
 
 using namespace std;
 
@@ -22,7 +23,7 @@ int main(int argc, char* argv[]) {
 		string filename_out = argv[2];
 		//string  out_path = "/home/edward/NTRTsim/src/dev/ezhu/STLParser/";
 		// Check for valid file extension
-		if (strstr(filename_in.c_str(), ".stl") == NULL) {
+		if (filename_in.find(".stl") == string::npos) {
 			cout << "Incorrect filetype, application for ASCII STL files only" << endl;
 			exit(EXIT_FAILURE);
 		}
@@ -55,28 +56,90 @@ int main(int argc, char* argv[]) {
 		}
 		// file_out << "Test 1 2 3" << endl;
 		string key = "vertex";
+		string line_out;
+		int vertex_index = 0;
+		int vertex_count = 0;
+		int triangle_count = 0;
+		int element_index = 0;
+		int line_index = 0;
 		// Parse triangle verticies from .stl file
-		for (int i = 0; i < 20; i++) {
+		//for (int i = 0; i < 204; i++) {
+		while (1) {
 			if (file_in.good()) {
-				string line;
-				getline(file_in, line);
+				string line_in;
+				getline(file_in, line_in);
+				line_index += 1;
+				cout << "Lines processed: " << line_index << endl;
 				//cout << line << endl;
-				if (strstr(line.c_str(), key.c_str()) != NULL) {
-					cout << line << endl;
+				size_t found_key = line_in.find(key);
+				// Look for "vertex" tag
+				if (found_key != string::npos) {
+					//cout << line_in << endl;
+					// Coordinates are space delimited
+					size_t found_char_last = line_in.find_first_of(" ", found_key);
+					size_t found_char_curr;
+					while (found_char_last != string::npos) {
+						found_char_curr = line_in.find_first_of(" ", found_char_last + 1);
+						string element;
+						if (found_char_curr == string::npos) {
+							element = line_in.substr(found_char_last + 1, line_in.size()-found_char_last);
+							//cout << element << endl;
+						}
+						else {
+							element = line_in.substr(found_char_last + 1, found_char_curr - 1 - found_char_last);
+							//cout << element << endl;
+						}
+						size_t found_E = element.find_first_of("E");
+						string coeff = element.substr(0, found_E);
+						string exp = element.substr(found_E + 1, element.size() - found_E);
+						//cout << coeff << " " << exp << endl;
+						double coeff_num = atof(coeff.c_str());
+						double exp_num = atof(exp.c_str());
+						//cout << exp_num << endl;
+						double num = coeff_num * pow(10.0, exp_num);
+						//cout << num << endl;
+
+						switch (element_index) {
+							case 0:
+								file_out << "[" << num << ", ";
+								element_index += 1;
+								break;
+							case 1:
+								file_out << num << ", ";
+								element_index += 1;
+								break;
+							case 2:
+								file_out << num << "] ";
+								element_index = 0;
+								break;
+						}
+						found_char_last = found_char_curr;
+					}
+					vertex_index += 1;
+					vertex_count += 1;
+					if (vertex_index >= 3) {
+						file_out << endl;
+						vertex_index = 0;
+						triangle_count += 1;
+					}
 				}
+
 			}
 			else {
 				// Check for read failures or end of file
-				if (file_in.fail()) {
-					cout << "Read failed" << endl;
+				if (file_in.eof()) {
+					cout << "Reached end of file, closing files" << endl;
+					cout << "Number of verticies extracted: " << vertex_count << endl;
+					cout << "Number of triangles: " << triangle_count << endl;
+					break;
 				}
-				else if (file_in.eof()) {
-					cout << "Reached end of file, closing input file" << endl;
+				else if (file_in.fail()) {
+					cout << "Read failed" << endl;
+					break;
 				}
+				
 			}
 		}
-		
-
 		file_in.close();
 		file_out.close();
 	}