Fixed infinite loop on bad file

README.md

@@ -13,8 +13,8 @@ v3.11.2
 2. Execute `make`
 
 ### Settings
-* Use without printer config to use linear moves. You should look at +10% Estimation
-* Alternatively copy `config_example.json` to `config.json` and edit based on your printer settings. You should look at -15% Estimation
+* Use without printer config to use linear moves. You should look at +10% Estimation. It's not reliable on prints with lots of infill.
+* Alternatively copy `config_example.json` to `config.json` and edit based on your printer settings. You should look at -12.5% Estimation
 
 ### Usage
 `./gcode_time [file] ...`
@@ -26,4 +26,4 @@ v3.11.2
 
 `+10%       - 05:52:11`
 
-`-15%       - 04:32:09`
+`-12.5%     - 04:40:09`

TimeCalc.cpp

@@ -197,22 +197,21 @@ TimeCalc::PrinterMove::PrinterMove()
 }
 
 TimeCalc::TimeCalc()
-: m_time(0.0), m_print_accel_max(0.0), m_travel_accel_max(0.0)
+: m_time(0.0), m_print_accel_max(0.0), m_travel_accel_max(0.0),
+	m_retract_accel_max(0.0)
 {
+	fill_n(m_accel_max, AXIS_COUNT, 0.0);
+	fill_n(m_vel_max, AXIS_COUNT, 0.0);
+	fill_n(m_jerk_max, AXIS_COUNT, 0.0);
 	reset();
 }
 
 void TimeCalc::reset()
 {
 	m_time = 0.0;
-	m_print_accel_max = 0.0;
-	m_travel_accel_max = 0.0;
 
 	fill_n(m_extruder_length, EXTRUDER_COUNT, 0.0);
 	fill_n(m_pos, AXIS_COUNT, 0.0);
-	fill_n(m_accel_max, AXIS_COUNT, 0.0);
-	fill_n(m_vel_max, AXIS_COUNT, 0.0);
-	fill_n(m_jerk_max, AXIS_COUNT, 0.0);
 
 	m_moves.clear();
 }
@@ -226,7 +225,8 @@ void TimeCalc::add_move(Point new_pos, double speed)
 	double vel;
 	double accel;
 	double prev_move_idx;
-	bool is_print;
+	double special_accel;
+	double de_sum;
 	static int counter = 0;
 
 	pos_new[0] = new_pos.x;
@@ -274,34 +274,32 @@ void TimeCalc::add_move(Point new_pos, double speed)
 	cout << "Vel - " << vel << endl;
 #endif
 
-	// Calculate acceleration
-	temp.clear();
-
-	// Is it a print move
-	is_print = false;
+	de_sum = 0.0;
 	for (int i = 0; i < EXTRUDER_COUNT; ++i)
 	{
-		if (0.0 != move_new.delta[3 + i])
-		{
-			is_print = true;
-			break;
-		}
+		de_sum += move_new.delta[3 + i];
 	}
 
-	// Add max acceleration for specific move to be considered
-	if (is_print)
+	// Set max acceleration for specific move to be considered
+	special_accel = 0.0;
+	if (0.0 == de_sum)
 	{
-		if (0.0 != m_print_accel_max)
-		{
-			temp.push_back(m_print_accel_max);
+		special_accel = m_travel_accel_max;
 	}
+	else if (move_new.dist == de_sum)
+	{
+		special_accel = m_retract_accel_max;
 	}
 	else
 	{
-		if (0.0 != m_travel_accel_max)
-		{
-			temp.push_back(m_travel_accel_max);
+		special_accel = m_print_accel_max;
 	}
+
+	// Calculate acceleration
+	temp.clear();
+	if (0.0 != special_accel)
+	{
+		temp.push_back(special_accel);
 	}
 
 	for (int i = 0 ; i < AXIS_COUNT; ++i)
@@ -512,3 +510,8 @@ void TimeCalc::set_travel_accel(double value)
 {
 	m_travel_accel_max = value;
 }
+
+void TimeCalc::set_retract_accel(double value)
+{
+	m_retract_accel_max = value;
+}

TimeCalc.h

@@ -35,6 +35,7 @@ private:
 
 	double m_print_accel_max;
 	double m_travel_accel_max;
+	double m_retract_accel_max;
 
 	std::vector<PrinterMove> m_moves;
 
@@ -57,6 +58,7 @@ public:
 
 	void set_print_accel(double value);
 	void set_travel_accel(double value);
+	void set_retract_accel(double value);
 };
 
 #endif // TIMECALC_H_

config_example.json

@@ -3,6 +3,7 @@
 	{
 		"print": 500,
 		"travel": 1000,
+		"retract": 1000,
 		"x": 500,
 		"y": 500,
 		"z": 100,

gcode.cpp

@@ -37,12 +37,12 @@ pair<char, double> extract_argument(const string& str)
 	return result;
 }
 
-void gcode_dummy(const vector<string>&, TimeCalc&, double&)
+void gcode_dummy(const vector<string>&, TimeCalc&, double&, bool&)
 {
 }
 
 // Linear Move
-void g1(const vector<string>& line_tokens, TimeCalc& calc, double& speed)
+void g1(const vector<string>& line_tokens, TimeCalc& calc, double& speed, bool& is_absolute)
 {
 	double result;
 	vector<string>::const_iterator it;
@@ -62,7 +62,14 @@ void g1(const vector<string>& line_tokens, TimeCalc& calc, double& speed)
 		// Extruder
 		case 'E':
 		case 'e':
+			if (is_absolute)
+			{
 				pos.e = arg.second;
+			}
+			else
+			{
+				pos.e += arg.second;
+			}
 			break;
 
 		// Feedrate (Speed) in units/min
@@ -78,17 +85,38 @@ void g1(const vector<string>& line_tokens, TimeCalc& calc, double& speed)
 
 		case 'X':
 		case 'x':
+			if (is_absolute)
+			{
 				pos.x = arg.second;
+			}
+			else
+			{
+				pos.x += arg.second;
+			}
 			break;
 
 		case 'Y':
 		case 'y':
+			if (is_absolute)
+			{
 				pos.y = arg.second;
+			}
+			else
+			{
+				pos.y += arg.second;
+			}
 			break;
 
 		case 'Z':
 		case 'z':
+			if (is_absolute)
+			{
 				pos.z = arg.second;
+			}
+			else
+			{
+				pos.z += arg.second;
+			}
 			break;
 
 		default:
@@ -101,7 +129,7 @@ void g1(const vector<string>& line_tokens, TimeCalc& calc, double& speed)
 }
 
 // Dwell
-void g4(const vector<string>& line_tokens, TimeCalc& calc, double& speed)
+void g4(const vector<string>& line_tokens, TimeCalc& calc, double& speed, bool& is_absolute)
 {
 	double result;
 	vector<string>::const_iterator it;
@@ -137,7 +165,7 @@ void g4(const vector<string>& line_tokens, TimeCalc& calc, double& speed)
 }
 
 // Move to Origin (Home)
-void g28(const vector<string>& line_tokens, TimeCalc& calc, double& speed)
+void g28(const vector<string>& line_tokens, TimeCalc& calc, double& speed, bool& is_absolute)
 {
 	Point pos = calc.get_pos();
 
@@ -148,8 +176,20 @@ void g28(const vector<string>& line_tokens, TimeCalc& calc, double& speed)
 	calc.set_pos(pos);
 }
 
+// Set to Absolute Positioning
+void g90(const vector<string>& line_tokens, TimeCalc& calc, double& speed, bool& is_absolute)
+{
+	is_absolute = true;
+}
+
+// Set to Relative Positioning
+void g91(const vector<string>& line_tokens, TimeCalc& calc, double& speed, bool& is_absolute)
+{
+	is_absolute = false;
+}
+
 // Set Position
-void g92(const vector<string>& line_tokens, TimeCalc& calc, double& speed)
+void g92(const vector<string>& line_tokens, TimeCalc& calc, double& speed, bool& is_absolute)
 {
 	vector<string>::const_iterator it;
 	pair<char, double> arg;

gcode.h

@@ -11,15 +11,17 @@ using namespace std;
 
 
 // Typedef of the function pointer
-typedef void (*gcode_cmd_t)(const vector<string>&, TimeCalc&, double&);
+typedef void (*gcode_cmd_t)(const vector<string>&, TimeCalc&, double&, bool& is_absolute);
 
 // Always returns 0 sec
-void gcode_dummy(const vector<string>&, TimeCalc&, double&);
+void gcode_dummy(const vector<string>&, TimeCalc&, double&, bool&);
 
 // All handled gcode commands
-void g1(const vector<string>& line_tokens, TimeCalc& calc, double& speed);
-void g4(const vector<string>& line_tokens, TimeCalc& calc, double& speed);
-void g28(const vector<string>& line_tokens, TimeCalc& calc, double& speed);
-void g92(const vector<string>& line_tokens, TimeCalc& calc, double& speed);
+void g1(const vector<string>& line_tokens, TimeCalc& calc, double& speed, bool& is_absolute);
+void g4(const vector<string>& line_tokens, TimeCalc& calc, double& speed, bool& is_absolute);
+void g28(const vector<string>& line_tokens, TimeCalc& calc, double& speed, bool& is_absolute);
+void g90(const vector<string>& line_tokens, TimeCalc& calc, double& speed, bool& is_absolute);
+void g91(const vector<string>& line_tokens, TimeCalc& calc, double& speed, bool& is_absolute);
+void g92(const vector<string>& line_tokens, TimeCalc& calc, double& speed, bool& is_absolute);
 
 #endif // GCODE_H_

main.cpp

@@ -9,6 +9,12 @@
 #include "gcode.h"
 #include "json.hpp"
 
+#if defined(WIN32) || defined(_WIN32) || defined(__WIN32) && !defined(__CYGWIN__)
+#define FOLDER_DELIM '\\'
+#else
+#define FOLDER_DELIM '/'
+#endif
+
 using namespace std;
 
 void usage(char *name)
@@ -86,8 +92,11 @@ void init_map(map<string, gcode_cmd_t>& gcode_map)
 	gcode_map["G28"] = g28;
 	gcode_map["g28"] = g28;
 
-	gcode_map["G90"] = gcode_dummy;
-	gcode_map["g90"] = gcode_dummy;
+	gcode_map["G90"] = g90;
+	gcode_map["g90"] = g90;
+
+	gcode_map["G91"] = g91;
+	gcode_map["g91"] = g91;
 
 	gcode_map["G92"] = g92;
 	gcode_map["g92"] = g92;
@@ -133,18 +142,24 @@ void print_time(double sec)
 	printf("%02d:%02d:%02.0f", hours, min, sec);
 }
 
-void init_calc(TimeCalc& calc)
+void init_calc(string arg0, TimeCalc& calc)
 {
-	ifstream file("config.json");
+	ifstream file;
+	size_t pos;
 	nlohmann::json conf;
 	vector<string> conf_keys_types = {"acceleration", "velocity", "jerk"};
 	vector<string> conf_keys_axes = {"x", "y", "z"};
 
+	pos = arg0.rfind(FOLDER_DELIM);
+	arg0.erase(pos + 1);
+	arg0 += "config.json";
+	file.open(arg0);
 
 	if (!file.is_open())
 	{
 		return;
 	}
+
 	try
 	{
 		file >> conf;
@@ -225,6 +240,14 @@ void init_calc(TimeCalc& calc)
 		{
 			calc.set_travel_accel(conf["acceleration"]["travel"]);
 		}
+
+		// Set Retract Acceleration
+		if (conf.contains("acceleration") &&
+			conf["acceleration"].contains("retract") &&
+			conf["acceleration"]["retract"].is_number())
+		{
+			calc.set_retract_accel(conf["acceleration"]["retract"]);
+		}
 	}
 }
 
@@ -239,6 +262,7 @@ int main(int argc, char **argv)
 
 	TimeCalc calc;
 	double speed;
+	bool is_absolute = true;
 	double total_time;
 	int hours;
 	int minutes;
@@ -250,15 +274,15 @@ int main(int argc, char **argv)
 	}
 
 	init_map(gcode_map);
+	init_calc(argv[0], calc);
 
 	for (string& fname : filenames)
 	{
 		calc.reset();
-		init_calc(calc);
 		speed = 0;
 
 		file.open(fname);
-		while (!file.eof())
+		while (file.good())
 		{
 			getline(file, line);
 			if (!is_gcode(remove_comments(line)))
@@ -269,7 +293,7 @@ int main(int argc, char **argv)
 
 			if (0 != gcode_map.count(line_tokens[0]))
 			{
-				gcode_map[line_tokens[0]](line_tokens, calc, speed);
+				gcode_map[line_tokens[0]](line_tokens, calc, speed, is_absolute);
 			}
 			else
 			{
@@ -295,8 +319,8 @@ int main(int argc, char **argv)
 		print_time(total_time * 1.1);
 		cout << endl;
 
-		cout << "-15%       - ";
-		print_time(total_time * 0.85);
+		cout << "-12.5%     - ";
+		print_time(total_time * 0.875);
 		cout << endl;
 	}
 	return 0;