private void DrawConnectionCurve(NodeConnection c)
{
Rect r1;
Rect r2;
if (c.GetFromHandle() != null)
{
r1 = c.GetFromHandle().rect;
}
else
{
r1 = c.GetFromNode().rect;
}
if (c.GetToHandle() != null)
{
r2 = c.GetToHandle().rect;
}
else
{
r2 = c.GetToNode().rect;
}
NodeUtils.DrawNodeCurve(r1, r2);
}