public void Mesh_CreateTetrahedron()
{
string v1Traits = "v1";
string v2Traits = "v2";
string v3Traits = "v3";
string faceTraits = "face1";
var mesh = new StringMesh();
var face = mesh.CreateTriangle(v1Traits, v2Traits, v3Traits, faceTraits);
var v4Traits = "v4";
var face2Traits = "face2";
var face3Traits = "face3";
var face4Traits = "face4";
// Recover the first vertex
var v1 = face.Bounding.Source;
var v2 = face.Bounding.Target;
var v3 = face.Bounding.Next.Target;
// Use it to make next triangle - careful with sequence V2 -> v1
var face2 = mesh.CreateTriangle(v2, v1, v4Traits, face2Traits);
var v4 = face2.Bounding.Next.Target;
// Recover halfedges
var e21 = v2.HalfedgeTo(v1);
var e14 = v1.HalfedgeTo(v4);
var e42 = v4.HalfedgeTo(v2);
var e12 = e21.Opposite;
var e41 = e14.Opposite;
var e24 = e42.Opposite;
var face3 = mesh.CreateTriangle(v3, v4, v1, face3Traits);
var face4 = mesh.CreateFace(e24, face4Traits);
foreach (var he in mesh.Halfedges)
{
Assert.IsNotNull(he.Face);
}
Assert.AreEqual(4, mesh.Faces.Count);
Assert.AreEqual(4, mesh.Vertices.Count);
}
