public static Vertex Create(float x, float y) {
if (float.IsNaN(x) || float.IsNaN(y)) {
return VertexAtInfinity;
}
var v = new Vertex(x, y);
return v;
}
public void SetVertex(LR.Side leftRight, Vertex v) {
if (leftRight == LR.Side.Left) {
LeftVertex = v;
} else {
RightVertex = v;
}
if (Vertex(LR.Other(leftRight)) != null) {
OutEnd();
}
}