// ----------------------------------------------------------------------
static Vector2 BindingDirectionFromTo(iCS_EditorObject port, iCS_EditorObject to, iCS_IStorage storage)
{
// Don't compute complex tangents if we don't have a proper parent.
iCS_EditorObject portParent = port.ParentNode;
if (port.IsFloating || to.IsFloating)
{
if (port.IsDataOrControlPort || !portParent.IsPositionOnEdge(port.AnimatedPosition, port.Edge))
{
Vector2 fromPos = port.AnimatedPosition;
Vector2 toPos = to.AnimatedPosition;
return(GetBestDirectionFrom((toPos - fromPos).normalized));
}
}
if (port.IsOutTransitionPort && portParent.IsIconizedOnDisplay)
{
return(storage.GetTransitionPackageVector(portParent));
}
if (port.IsInTransitionPort && portParent.IsIconizedOnDisplay)
{
return(-storage.GetTransitionPackageVector(portParent));
}
Vector2 direction;
if (port.IsOnLeftEdge)
{
direction = LeftDirection;
}
else if (port.IsOnRightEdge)
{
direction = RightDirection;
}
else if (port.IsOnTopEdge)
{
direction = UpDirection;
}
else
{
direction = DownDirection;
}
// Inverse direction for connection between nested nodes.
iCS_EditorObject toParent = to.ParentNode;
if (storage.IsChildOf(toParent, portParent) && !port.IsInStatePort)
{
direction = -direction;
}
return(direction);
}