Nutze Skyfield fuer praezisere Daemmerungsberechnung

public/py/vendor/skyfield/tests/test_functions.py

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+"""Tests for routines from the functions module."""
+
+from numpy import array
+from skyfield.constants import tau
+from skyfield.functions import from_spherical, _reconcile
+
+def test_right():
+    dx, dy, dz = from_spherical(1, 0, 0) - [1, 0, 0]
+    assert abs(dx) < 1e-15
+    assert abs(dy) < 1e-15
+    assert abs(dz) < 1e-15
+
+def test_down():
+    dx, dy, dz = from_spherical(1, 0, 0.75 * tau) - [0, -1, 0]
+    assert abs(dx) < 1e-15
+    assert abs(dy) < 1e-15
+    assert abs(dz) < 1e-15
+
+def test_up():
+    dx, dy, dz = from_spherical(1, 0.25 * tau, 0) - [0, 0, 1]
+    assert abs(dx) < 1e-15
+    assert abs(dy) < 1e-15
+    assert abs(dz) < 1e-15
+
+def test_left_up():
+    sqrt2 = 0.5 ** 0.5
+    dx, dy, dz = from_spherical(1, 0.125 * tau, 0.5 * tau) - [-sqrt2, 0, sqrt2]
+    assert abs(dx) < 1e-15
+    assert abs(dy) < 1e-15
+    assert abs(dz) < 1e-15
+
+def test_reconcile():
+    a = array([1,2])
+    b = array([[1], [2]])
+    a2, b2 = _reconcile(a, b)
+    assert a is a2
+    assert b is b2
+    assert a.tolist() == a2.tolist() == b2.tolist()
+
+    a = array([[1], [2]])
+    b = array([1,2])
+    a2, b2 = _reconcile(a, b)
+    assert a is a2
+    assert b is b2
+    assert a.tolist() == a2.tolist() == b2.tolist()