private static void ParameterNodeTypeChanged(object sender, HyperGraph.Items.AcceptNodeSelectionChangedEventArgs args)
{
if (sender is HyperGraph.Items.NodeDropDownItem)
{
var item = (HyperGraph.Items.NodeDropDownItem)sender;
var node = item.Node;
var newType = AsEnumValue <ParamSourceType>(item.Items[args.Index], ParamSourceTypeNames);
// We might have to change the input/output settings on this node
bool isOutput = newType == ParamSourceType.Output;
var oldItems = new List <HyperGraph.NodeItem>(node.Items);
foreach (var i in oldItems)
{
if (i is ShaderFragmentNodeItem)
{
// if this is a node item with exactly 1 input/output
// and it is not in the correct direction, then we have to change it.
// we can't change directly. We need to delete and recreate this node item.
var fragItem = (ShaderFragmentNodeItem)i;
if ((fragItem.Output.Enabled ^ fragItem.Input.Enabled) == true &&
(fragItem.Output.Enabled) != (isOutput == false))
{
var newItem = new ShaderFragmentNodeItem(
fragItem.Name, fragItem.Type, fragItem.ArchiveName,
isOutput ? true : false, isOutput ? false : true);
node.RemoveItem(fragItem);
node.AddItem(newItem);
}
}
}
}
}
private string TypeFromNodeItem(ShaderFragmentNodeItem nodeItem)
{
if (nodeItem.ArchiveName != null && nodeItem.ArchiveName.Length != 0)
{
var param = _shaderFragments.GetParameter(nodeItem.ArchiveName);
return((param != null) ? param.Type : string.Empty);
}
return(nodeItem.Type);
}