public ArborNode nearest(int sx, int sy)
{
ArborPoint x = this.fromScreen(sx, sy);
ArborNode resNode = null;
double minDist = +1.0;
foreach (ArborNode node in this.fNodes)
{
ArborPoint z = node.Pt;
if (z.exploded())
{
continue;
}
double dist = z.sub(x).magnitude();
if (dist < minDist)
{
resNode = node;
minDist = dist;
}
}
//minDist = this.toScreen(resNode.Pt).sub(this.toScreen(x)).magnitude();
return(resNode);
}
private void updateGraphBounds()
{
ArborPoint lt = new ArborPoint(-1, -1);
ArborPoint rb = new ArborPoint(1, 1);
foreach (ArborNode node in this.fNodes)
{
ArborPoint pt = node.Pt;
if (pt.exploded())
{
continue;
}
if (pt.X < lt.X)
{
lt.X = pt.X;
}
if (pt.Y < lt.Y)
{
lt.Y = pt.Y;
}
if (pt.X > rb.X)
{
rb.X = pt.X;
}
if (pt.Y > rb.Y)
{
rb.Y = pt.Y;
}
}
lt.X -= 1.2;
lt.Y -= 1.2;
rb.X += 1.2;
rb.Y += 1.2;
ArborPoint sz = rb.sub(lt);
ArborPoint cent = lt.add(sz.div(2));
ArborPoint d = new ArborPoint(Math.Max(sz.X, 4.0), Math.Max(sz.Y, 4.0)).div(2);
this.fGraphBounds = new PSBounds(cent.sub(d), cent.add(d));
}