change data, mathematics, function, geometry and geometry_plot_pylab. add data_step, data_step_std and helper. add an example and more documentation.

inside the data module rename read to read_columns add add new read function to read the whole file as string. add print_list function to print one element per line. add unique_list and unique_list_hashable to reduce the list into a unique list with same order. add find_last, str_between, str_to_list functions.

inside the mathematics module for vector add normalized creating a new object (normalize will change the object), isclose and iscloseto, change ang to round internal number. for matrix improve slicing and add transposed creating a new object (transpose will change object).

inside the function module add b_spline_basis, b_spline_curve_with_knots and b_spline_knots functions. add sample_hal_open and sample_half_open_seq. add circle and ellipse.

inside the geometry module change CS init from using lists to Directions and add new constructor CS.init_xzy using lists. rename Wireframe to Polyline. add classes B_spline_curve_with_knots, Ellipse, ArcCircle, ArcEllipse, ArcBSplineCurveWithKnots. add function sample_half_open to create a list of Points.

inside the geometry_plot_pylab module change the help text.

add step_and data data_step_std module to read a step file to list and draw the content.

add helper module with context manager and decorator timeit to meassure the time for a section or function.

add example for b_spline function.

tests/test_data_step_std.py

@@ -0,0 +1,42 @@
+# -*- coding: utf-8 -*-
+"""Test of data_step_std module.
+
+:Date: 2020-01-03
+
+.. module:: test_data_step_std
+  :platform: *nix, Windows
+  :synopsis: Test of data_step_std module.
+
+.. moduleauthor:: Daniel Weschke <daniel.weschke@directbox.de>
+"""
+import unittest
+
+import os
+import sys
+sys.path.insert(0, os.path.abspath('..'))
+from pylib.data_step_std import CARTESIAN_POINT, VERTEX_POINT
+
+class TestDataStepStd(unittest.TestCase):
+
+  def test_multi_objects(self):
+    cp = CARTESIAN_POINT('', (0.E+000, 0.E+000, 0.E+000))
+    #print(cp)
+    self.assertEqual(
+        str(cp),
+        "#1 = CARTESIAN_POINT('', (0.0, 0.0, 0.0))")
+
+    cp2 = eval('CARTESIAN_POINT("j", (0.E+000,0.E+000,0.E+000))')
+    #print(cp2)
+    self.assertEqual(
+        str(cp2),
+        "#2 = CARTESIAN_POINT('j', (0.0, 0.0, 0.0))")
+
+    vp = VERTEX_POINT('', cp)
+    #print(vp)
+    self.assertEqual(
+        str(vp),
+        "#3 = VERTEX_POINT('', #1)")
+
+
+if __name__ == '__main__':
+  unittest.main(verbosity=2)