add issequence function to data and plot functions and examples for geometry

tests/test_geometry.py

@@ -13,69 +13,85 @@ import unittest
 import os
 import sys
 import math
-sys.path.insert(0, os.path.abspath('../pylib'))
-from mathematics import vector
-from geometry import Direction, Point, CS, Wireframe, Polygon
+sys.path.insert(0, os.path.abspath('..'))
+from pylib.geometry import Direction, Point, CS, Wireframe, Line, Polygon, Circle
 
 class TestGeometry(unittest.TestCase):
 
   def test_Direction(self):
     p = Direction()
     self.assertIsInstance(
-        p, list)
+        p,
+        list)
     self.assertEqual(
-        p, [1, 0, 0, 0])
+        p,
+        [1, 0, 0, 0])
     self.assertEqual(
-        Direction(2, 3, 4), [2, 3, 4, 0])
+        Direction(2, 3, 4),
+        [2, 3, 4, 0])
 
-    self.assertIsInstance(
-        p, vector)
+  def test_Direction_getitem(self):
     self.assertEqual(
-        p, vector([1, 0, 0, 0]))
+        Direction()[:3],
+        [1, 0, 0])
     self.assertEqual(
-        Direction(2, 3, 4), vector([2, 3, 4, 0]))
-
-  def test_Direction_xyz(self):
-    self.assertEqual(
-        Direction().xyz(), [1, 0, 0])
-    self.assertEqual(
-        Direction(1, -1, 1).xyz(), [1, -1, 1])
+        Direction(1, -1, 1)[:3],
+        [1, -1, 1])
 
   def test_Point(self):
     p = Point()
     self.assertIsInstance(
-        p, list)
+        p,
+        list)
     self.assertEqual(
-        p, [0, 0, 0, 1])
+        p,
+        [0, 0, 0, 1])
     self.assertEqual(
-        Point(2, 3, 4), [2, 3, 4, 1])
+        Point(2, 3, 4),
+        [2, 3, 4, 1])
 
-    self.assertIsInstance(
-        p, vector)
+  def test_Point_getitem(self):
     self.assertEqual(
-        p, vector([0, 0, 0, 1]))
+        Point()[:3],
+        [0, 0, 0])
     self.assertEqual(
-        Point(2, 3, 4), vector([2, 3, 4, 1]))
+        Point(1, -1, 1)[:3],
+        [1, -1, 1])
 
-  def test_Point_xyz(self):
+  def test_Point_rotate(self):
+    [self.assertAlmostEqual(i, j) for i, j in
+     zip(Point(1, 1, 1).rotate_x(math.pi/4), [1, 0, 1.414213562373095, 1])]
+
+  def test_CS(self):
     self.assertEqual(
-        Point().xyz(), [0, 0, 0])
-    self.assertEqual(
-        Point(1, -1, 1).xyz(), [1, -1, 1])
+        CS(),
+        [[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]])
+
+  def test_CS_rotate(self):
+    [self.assertAlmostEqual(k, l) for i, j in
+     zip(CS().rotate_y(-math.pi/2),
+         [[0, 0.0, -1.0, 0.0], [0, 1, 0, 0], [1.0, 0.0, 0, 0.0], [0, 0, 0, 1]])
+     for k, l in zip(i, j)]
 
   def test_Wireframe(self):
     self.assertEqual(
-        Wireframe().points(), [])
+        Wireframe().points(),
+        [])
 
     # it is possible to assign other objects then Points but/and the
     # class will not test if Points are used, this is just assumed
     self.assertEqual(
-        Wireframe([]).points(), [[]])
+        Wireframe([]).points(),
+        [[]])
 
     self.assertEqual(
-        Wireframe(Point()).points(), [[0, 0, 0, 1]])
+        Wireframe(Point()).points(),
+        [[0, 0, 0, 1]])
+
+  def test_Line(self):
     self.assertEqual(
-        Wireframe(Point()).points(), [vector([0, 0, 0, 1])])
+        Line().points(),
+        [[-1, 0, 0, 1], [1, 0, 0, 1]])
 
   def test_Polygon(self):
     p0 = Point()
@@ -87,6 +103,14 @@ class TestGeometry(unittest.TestCase):
         pg.points(),
         [[0, 0, 0, 1], [1, 0 , 0, 1], [1, 1, 1, 1], [0, 1, 1, 1], [0, 0, 0, 1]])
 
+  def test_Polygon_rotate(self):
+    pg = Polygon(Point(1, 1, 1)).rotate_x(math.pi/4)
+    [self.assertAlmostEqual(i, j) for i, j in
+     zip(pg.points()[0], [1, 0, 1.414213562373095, 1])]
+    [self.assertAlmostEqual(k, l) for i, j in
+     zip(pg.xyz(), ((1, 1), (0, 0), (1.414213562373095, 1.414213562373095)))
+     for k, l in zip(i, j)]
+
   def test_Polygon_ch_cs(self):
     # example object to rotate
     p0 = Point()
@@ -103,5 +127,23 @@ class TestGeometry(unittest.TestCase):
     pg.ch_cs(cs)
     [self.assertAlmostEqual(i, j) for i, j in zip(pg.points(), test)]
 
+  def test_Circle(self):
+    cs = Circle(n=4).points()
+    test = [[1, 0, 0, 1], [0, 1, 0, 1], [-1, 0, 0, 1], [0, -1, 0 ,1], [1, 0, 0, 1]]
+    [self.assertAlmostEqual(i, j) for i, j in zip(cs, test)]
+
+    cs = Circle().points()
+    test = [[1.0, 0.0, 0, 1],
+            [0.8090169943749475, 0.5877852522924731, 0, 1],
+            [0.30901699437494745, 0.9510565162951535, 0, 1],
+            [-0.30901699437494734, 0.9510565162951536, 0, 1],
+            [-0.8090169943749473, 0.5877852522924732, 0, 1],
+            [-1.0, 1.2246467991473532e-16, 0, 1],
+            [-0.8090169943749476, -0.587785252292473, 0, 1],
+            [-0.30901699437494756, -0.9510565162951535, 0, 1],
+            [0.30901699437494723, -0.9510565162951536, 0, 1],
+            [0.8090169943749473, -0.5877852522924734, 0, 1]]
+    [self.assertAlmostEqual(k, l) for i, j in zip(cs, test) for k, l in zip(i, j) ]
+
 if __name__ == '__main__':
   unittest.main(verbosity=2)