public void FindContainingTriangleTest()
{
var ret = T.FindContainingTriangle(new Vector2(1, 0.5f));
Assert.AreEqual(t1, ret);
ret = T.FindContainingTriangle(new Vector2(1, -0.5f));
Assert.AreEqual(t2, ret);
ret = T.FindContainingTriangle(new Vector2(-5, 0));
Assert.IsNull(ret);
}
/// <summary>
/// Adds a vertex at the given position to the Delaunay triangulation.
/// Legalizes relevant edges in order to maintain Delaunay condition.
/// </summary>
/// <param name="T"></param>
/// <param name="a_vertex"></param>
/// <returns></returns>
public static void AddVertex(Triangulation T, Vector2 a_vertex)
{
// find triangle that contains X
var triangle = T.FindContainingTriangle(a_vertex);
T.AddVertex(a_vertex);
// Flip if needed
LegalizeEdge(T, a_vertex, triangle.E0);
LegalizeEdge(T, a_vertex, triangle.E1);
LegalizeEdge(T, a_vertex, triangle.E2);
}