private List <Point> points() //n1からn2への折れ線の中間点
{
List <Point> ps = new List <Point>();
Point p1 = n1.getP(); //始点
ps.Add(p1);
if (n2 == null)
{
ps.Add(p);
return(ps);
}
Point p1n = n1.getNP();
Point p2 = n2.getP();
Point p2n = n2.getNP();
Point pm = mid(p1, p2);
if (n1.pos == n2.pos)
{
if (n1.pos == 1 || n1.pos == 3) // N->N || S->S
{
int y = (n1.pos == 1 ? Math.Min(p1n.Y, p2n.Y) : Math.Max(p1n.Y, p2n.Y));
ps.Add(new Point(p1.X, y));
ps.Add(new Point(p2.X, y));
}
else
{ // E->E || W->W
int x = (n1.pos == 2 ? Math.Max(p1n.X, p2n.X) : Math.Min(p1n.X, p2n.X));
ps.Add(new Point(x, p1.Y));
ps.Add(new Point(x, p2.Y));
}
}
else if ((n1.pos == 1 && n2.pos == 3) || (n1.pos == 3 && n2.pos == 1)) // N->S || S->N
{
bool b = (n1.pos == 1 ? p1n.Y > p2n.Y : p1n.Y < p2n.Y);
if (b)
{
ps.Add(new Point(p1.X, pm.Y));
ps.Add(new Point(p2.X, pm.Y));
}
else
{
ps.Add(new Point(p1.X, p1n.Y));
ps.Add(new Point(pm.X, p1n.Y));
ps.Add(new Point(pm.X, p2n.Y));
ps.Add(new Point(p2.X, p2n.Y));
}
}
else if ((n1.pos == 2 && n2.pos == 4) || (n1.pos == 4 && n2.pos == 2)) // E->W || W->E
{
bool b = (n1.pos == 2 ? p1n.X <p2n.X : p1n.X> p2n.X);
if (b)
{
ps.Add(new Point(pm.X, p1.Y));
ps.Add(new Point(pm.X, p2.Y));
}
else
{
ps.Add(new Point(p1n.X, p1.Y));
ps.Add(new Point(p1n.X, pm.Y));
ps.Add(new Point(p2n.X, pm.Y));
ps.Add(new Point(p2n.X, p2.Y));
}
}
else if (n1.pos == 1 || n1.pos == 3) // N->E, N->W, S->E, S->W
{
bool b1 = (n1.pos == 1 ? p1.Y > p2.Y : p1.Y < p2.Y);
bool b2 = (n2.pos == 2 ? p1.X > p2.X : p1.X < p2.X);
if (b1 && b2)
{
ps.Add(new Point(p1.X, p2.Y));
}
else if (!b1 && b2)
{
ps.Add(new Point(p1.X, p1n.Y));
ps.Add(new Point(pm.X, p1n.Y));
ps.Add(new Point(pm.X, p2.Y));
}
else
{
ps.Add(new Point(p1.X, p1n.Y));
ps.Add(new Point(p2n.X, p1n.Y));
ps.Add(new Point(p2n.X, p2.Y));
}
}
else // E->N, E->S, W->N, W->S
{
bool b1 = (n1.pos == 2 ? p1.X <p2.X : p1.X> p2.X);
bool b2 = (n2.pos == 1 ? p1.Y <p2.Y : p1.Y> p2.Y);
if (b1 && b2)
{
ps.Add(new Point(p2.X, p1.Y));
}
else if (!b1 && b2)
{
ps.Add(new Point(p1n.X, p1.Y));
ps.Add(new Point(p1n.X, pm.Y));
ps.Add(new Point(p2.X, pm.Y));
}
else
{
ps.Add(new Point(p1n.X, p1.Y));
ps.Add(new Point(p1n.X, p2n.Y));
ps.Add(new Point(p2.X, p2n.Y));
}
}
ps.Add(p2);
return(ps);
}
