public void Test_S2ContainsVertexQuery_CompatibleWithAngleContainsVertexDegenerate()
{
S2Point a = new(1, 0, 0), b = new(0, 1, 0);
S2ContainsVertexQuery q = new(b);
q.AddEdge(a, -1);
q.AddEdge(a, 1);
Assert.Equal(q.ContainsSign() > 0, S2.AngleContainsVertex(a, b, a));
}
public void Test_S2ContainsVertexQuery_CompatibleWithAngleContainsVertex()
{
var points = S2Testing.MakeRegularPoints(MakePointOrDie("89:1"),
S1Angle.FromDegrees(5), 10);
S2PointLoopSpan loop = new(points);
for (int i = 0; i < loop.Count; ++i)
{
S2Point a = loop[i];
S2Point b = loop[i + 1];
S2Point c = loop[i + 2];
S2ContainsVertexQuery q = new(b);
q.AddEdge(a, -1);
q.AddEdge(c, 1);
Assert.Equal(q.ContainsSign() > 0, S2.AngleContainsVertex(a, b, c));
}
}