public Edges[] EdgesForTriangle(Edges edges, Triangle triangle)//找到一个三角形的另外两条边
{
Edges[] ed = new Edges[2];
Edges e1 = new Edges(triangle.p1, triangle.p2);
Edges e2 = new Edges(triangle.p1, triangle.p3);
Edges e3 = new Edges(triangle.p2, triangle.p3);
if (edges.Equals(e1))
{
ed[0] = e2;
ed[1] = e3;
}
else if (edges.Equals(e2))
{
ed[0] = e1;
ed[1] = e3;
}
else
{
ed[0] = e1;
ed[1] = e2;
}
return(ed);
}