public void TestSetOrientation()
{
var mesh = new BndFactory(2).CreateMesh() as BndMesh;
var face = BuildCcwSquare(mesh);
// ReSharper disable PossibleNullReferenceException
mesh.FinalizeMesh();
var vertsCcw = face.Vertices().ToList();
var boundaryFace = mesh.Faces.First(f => f != face);
Assert.IsTrue(boundaryFace.IsBoundary);
Assert.IsFalse(face.IsBoundary);
Assert.IsTrue(face.Vertices().Zip(vertsCcw, (v1, v2) => v1 == v2).All(f => f));
mesh.SetOrientation(true);
Assert.IsTrue(face.Vertices().Zip(vertsCcw, (v1, v2) => v1 == v2).All(f => f));
mesh.SetOrientation(false);
// We are reversed, but in flipping the first edge to point (0,0)->(0,1) so that it
// points (0,1)->(0,0) the initial vertex of the face has been changed to (0,1) so
// we have to shift to account for that.
vertsCcw = vertsCcw.Skip(2).Concat(vertsCcw.Take(2)).ToList();
// ReSharper restore PossibleNullReferenceException
Assert.IsTrue(face.Vertices().Reverse().Zip(vertsCcw, (v1, v2) => v1 == v2).All(f => f));
}
public void TestSetOrientationTwoBnds()
{
var mesh = new BndFactory(2).CreateMesh() as BndMesh;
var faceCcw = BuildCcwSquare(mesh) as BoundaryFace;
var faceCw = BuildCwSquare(mesh) as BoundaryFace;
// ReSharper disable PossibleNullReferenceException
mesh.FinalizeMesh();
var vertsCcw = faceCcw.Vertices().ToList();
var vertsCw = faceCw.Vertices().ToList();
Assert.IsFalse(faceCcw.IsBoundary);
Assert.IsFalse(faceCw.IsBoundary);
Assert.IsTrue(faceCcw.Vertices().Zip(vertsCcw, (v1, v2) => v1 == v2).All(f => f));
Assert.IsTrue(faceCw.Vertices().Zip(vertsCw, (v1, v2) => v1 == v2).All(f => f));
mesh.SetOrientation(true);
Assert.IsTrue(faceCcw.Vertices().Zip(vertsCcw, (v1, v2) => v1 == v2).All(f => f));
vertsCw = vertsCw.Skip(2).Concat(vertsCw.Take(2)).ToList();
Assert.IsTrue(faceCw.Vertices().Reverse().Zip(vertsCw, (v1, v2) => v1 == v2).All(f => f));
}