TreeGraphNode DeserializeNode(TreeNodeData data)
{
NodeInfo info = serializedNameToInfo.TryGetValue(data.nodeTypeSerializableName) ?? throw new Exception($"Unexpected serialized name {data.nodeTypeSerializableName}");
TreeGraphNode node = graphView.CreateNewNode(info, data.position, data.parameters);
node.GUID = data.GUID;
//Children
TreeGraphNode child = null;
for (int i = 0; i < data.children.Length; i++)
{
child = DeserializeNode(allData[data.children[i]]);
graphView.AddElement(child.ParentPort.ConnectTo(node.ChildrenPort));
}
child?.RecalculateOrder(); //This will calculate the order of its siblings too
return(node);
}
int SerializeNode(TreeGraphNode node)
{
var data = new TreeNodeData
{
position = node.GetPosition().position, //Position
nodeTypeSerializableName = node.Info.serializedName, //Node type name
parameters = node.Parameters //Parameters
};
//Children
if (node.ChildrenPort == null || !node.ChildrenPort.connected)
{
data.children = Array.Empty <int>();
}
else
{
var childIndices = new List <int>();
foreach (Edge connection in node.ChildrenPort.connections)
{
if (!(connection.input.node is TreeGraphNode child))
{
continue;
}
while (child.Order >= childIndices.Count)
{
childIndices.Add(-1);
}
childIndices[child.Order] = SerializeNode(child);
}
data.children = childIndices.ToArray();
}
//Finalize
data.GUID = allData.Count;
allData.Add(data);
return(data.GUID);
}
/// <summary>
/// Recalculate this node's order in parent.
/// If <paramref name="propagateToSiblings"/> is true, then the order of all its siblings will be recalculated too
/// </summary>
public void RecalculateOrder(bool propagateToSiblings = true)
{
Port parentInputPort = ParentPort?.connections?.FirstOrDefault()?.output;
if (parentInputPort == null || parentInputPort.capacity == Port.Capacity.Single)
{
SetEmpty();
}
else
{
TreeGraphNode parentNode = (TreeGraphNode)parentInputPort.node;
if (GraphView.IsRemovingElement(this))
{
if (propagateToSiblings)
{
//Loop through all parent's children connections
foreach (Edge edge in parentNode.ChildrenPort.connections)
{
if (edge.input.node is TreeGraphNode node && node != this)
{
node.RecalculateOrder(false); //Important false to avoid infinite recursion
}
}
}
SetEmpty();
return;
}
int order = 0;
float y = GetPositionImmediate().y;
//Loop through all parent's children connections
foreach (Edge edge in parentNode.ChildrenPort.connections)
{
if (!(edge.input.node is TreeGraphNode node) || node == this)
{
continue;
}
if (node.GetPositionImmediate().y < y && !GraphView.IsRemovingElement(node))
{
order++;
}
if (propagateToSiblings)
{
node.RecalculateOrder(false); //NOTE: This false is really important to avoid infinite recursions!
}
}
orderLabel.text = order.ToString(); //This looks better than "Order 1", however if it gets too difficult to understand we can change it back
Order = order;
}
void SetEmpty()
{
if (orderLabel != null)
{
orderLabel.text = "";
}
Order = 0;
}
}