/// <summary>
/// Checks whether the süecified nodeID is compatible with the given canvas type
/// 检测制定的Node ID是否与当前Canvas相匹配
/// </summary>
public static bool CheckCanvasCompability(string nodeID, Type canvasType)
{
NodeTypeData data = NodeTypes.GetNodeData(nodeID);
return(data.limitToCanvasTypes == null || data.limitToCanvasTypes.Length == 0 || data.limitToCanvasTypes.Contains(canvasType));
}
/// <summary>
/// Creates a node of the specified ID at pos on the specified canvas, optionally auto-connecting the specified output to a matching input
/// silent disables any events, init specifies whether OnCreate should be called
/// </summary>
public static Node Create(string nodeID, Vector2 pos, NodeCanvas hostCanvas,
ConnectionPort connectingPort = null, bool silent = false, bool init = true)
{
if (string.IsNullOrEmpty(nodeID) || hostCanvas == null)
{
throw new ArgumentException();
}
if (!NodeCanvasManager.CheckCanvasCompability(nodeID, hostCanvas.GetType()))
{
throw new UnityException("Cannot create Node with ID '" + nodeID +
"' as it is not compatible with the current canavs type (" +
hostCanvas.GetType().ToString() + ")!");
}
if (!hostCanvas.CanAddNode(nodeID))
{
throw new UnityException("Cannot create Node with ID '" + nodeID + "' on the current canvas of type (" +
hostCanvas.GetType().ToString() + ")!");
}
// Create node from data
NodeTypeData data = NodeTypes.GetNodeData(nodeID);
Node node = (Node)CreateInstance(data.type);
if (node == null)
{
return(null);
}
// Init node state
node.canvas = hostCanvas;
node.name = node.Title;
node.autoSize = node.DefaultSize;
node.position = pos;
Undo.RecordObject(hostCanvas, "NodeEditor_新增保存");
NodeEditorSaveManager.AddSubAsset(node, hostCanvas);
ConnectionPortManager.UpdateConnectionPorts(node);
if (init)
{
node.OnCreate();
}
if (connectingPort != null)
{
// Handle auto-connection and link the output to the first compatible input
for (int i = 0; i < node.connectionPorts.Count; i++)
{
if (node.connectionPorts[i].TryApplyConnection(connectingPort, silent))
{
break;
}
}
}
// Add node to host canvas
hostCanvas.nodes.Add(node);
if (!silent)
{
// Callbacks
NodeEditorCallbacks.IssueOnAddNode(node);
hostCanvas.Validate();
NodeEditor.RepaintClients();
}
return(node);
}