Added a parser class to read a curve from a file. Added a unit test t…

…o make sure the parser was working as intended.

curves/Hulls_Trefoil_2017_09_03.curve

@@ -1,6 +1,6 @@
 % Original Trefoil Control Points 
 0,				4831838208,		10737418240 
--8053063680,	-51002736640,	-26843545600
+-8053063680,	-51002736640,	-26843545600 % Test inline comment
 21474836480, 	42949672960, 	-10737418240
 5368709120, 	-32212254720, 	31138512896
 -32212254720, 	16106127360, 	10737418240

data_objects/point.py

@@ -0,0 +1,19 @@
+#!/usr/bin/env python
+"""
+@author Peter Zaffetti 2017
+"""
+
+
+class Point:
+
+    def __init__(self, x_val, y_val, z_val):
+        self.x_val = x_val
+        self.y_val = y_val
+        self.z_val = z_val
+
+    def __eq__(self, other):
+        """Override the default Equals behavior"""
+        if isinstance(other, self.__class__):
+            return self.x_val == other.x_val and self.y_val == other.y_val and self.z_val == other.z_val
+        return False
+

data_objects/stick_knot.py

@@ -0,0 +1,16 @@
+#!/usr/bin/env python
+"""
+@author Peter Zaffetti 2017
+"""
+from point import Point
+
+
+
+class StickKnot:
+
+    def __init__(self, knot_points_arr=None):
+        self.knot_points = knot_points_arr
+        pass
+
+    def get_points(self):
+        return self.knot_points

unit_tests/parser_test.py

@@ -0,0 +1,26 @@
+#!/usr/bin/env python
+"""
+@author Peter Zaffetti 2017
+"""
+import unittest
+from user_interface.parser import parse_curve_file
+from data_objects.point import Point
+
+
+class ParserUnitTest(unittest.TestCase):
+
+    def test_parser(self):
+        test_knot = parse_curve_file("../curves/Hulls_Trefoil_2017_09_03.curve")
+        points = test_knot.get_points()
+
+        self.assertTrue(points[0] == Point(0, 4831838208, 10737418240))
+        self.assertTrue(points[1] == Point(-8053063680, -51002736640, -26843545600))
+        self.assertTrue(points[2] == Point(21474836480, 42949672960, -10737418240))
+        self.assertTrue(points[3] == Point(5368709120, -32212254720, 31138512896))
+        self.assertTrue(points[4] == Point(-32212254720, 16106127360, 10737418240))
+        self.assertTrue(points[5] == Point(21474836480, -32212254720, -32212254720))
+        self.assertTrue(points[6] == Point(0, 4831838208, 10737418240))
+
+
+if __name__ == '__main__':
+    unittest.main()

user_interface/parser.py

@@ -0,0 +1,28 @@
+#!/usr/bin/env python
+"""
+@author Peter Zaffetti 2017
+"""
+from data_objects.point import Point
+from data_objects.stick_knot import StickKnot
+
+
+def parse_curve_file(filename="test.curve"):
+    curve_file = open(filename, "r")
+    stick_knot_points = list()
+
+    for line in curve_file:
+        if line.startswith("%"):
+            continue
+        comment_split_line = line.split("%")
+        point_values = comment_split_line[0]
+        comma_split_point_values = point_values.split(",")
+
+        if len(comma_split_point_values) != 3:
+            raise Exception("The curve file is not formatted properly")
+        else:
+            x_val = float(comma_split_point_values[0])
+            y_val = float(comma_split_point_values[1])
+            z_val = float(comma_split_point_values[2])
+            stick_knot_points.append(Point(x_val, y_val, z_val))
+
+    return StickKnot(stick_knot_points)