csg2d - tests

tests/pytest/test_csg2d.py

@@ -0,0 +1,33 @@
+from netgen.geom2d import *
+import pytest
+import math
+from pytest import approx
+
+def test_two_circles():
+    c1 = Circle(center=(0,0), radius=1)
+    c2 = c1.Rotate(deg=45)
+    s = c1*c2
+    geo = CSG2d()
+    geo.Add(s)
+    m = geo.GenerateMesh()
+    assert m.ne > 0
+
+    ngs = pytest.importorskip("ngsolve")
+    mesh = ngs.Mesh(m)
+    mesh.Curve(5)
+    assert ngs.Integrate(1.0, mesh) == approx(math.pi)
+
+def test_two_edge():
+    s = Solid2d( [(-1,0), cp(0,1), (1,0), cp(0,2)] )
+    geo = CSG2d()
+    geo.Add(s)
+    m = geo.GenerateMesh()
+    assert m.ne > 0
+
+    ngs = pytest.importorskip("ngsolve")
+    g = geo.GenerateSplineGeometry()
+    ngs.Draw(g)
+
+if __name__ == "__main__":
+    test_two_circles()
+    test_two_edge()