Damien Picard
81815681d0
Links created through the normal Python API are invalid since
7026096099. Before then, one could create links to or from virtual
sockets from Python (grayed out sockets in Group Input and Group
Output nodes), as is still possible in the GUI.
This is documented as an API change, and it broke at least Node
Wrangler, see blender/blender-addons#104470. Instead of just fixing
that, let's introduce an API to make this operation simpler.
Pull Request: blender/blender#105975
54 lines
1.6 KiB
Python
54 lines
1.6 KiB
Python
# SPDX-License-Identifier: GPL-2.0-or-later
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__all__ = (
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"connect_virtual_socket",
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"find_node_input",
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)
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def connect_sockets(input, output):
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"""
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Connect sockets in a node tree.
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This is useful because the links created through the normal Python API are
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invalid when one of the sockets is a virtual socket (grayed out sockets in
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Group Input and Group Output nodes).
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It replaces node_tree.links.new(input, output)
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"""
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import bpy
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# Swap sockets if they are not passed in the proper order
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if input.is_output and not output.is_output:
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input, output = output, input
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input_node = output.node
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output_node = input.node
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if input_node.id_data is not output_node.id_data:
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print("Sockets do not belong to the same node tree")
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return
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if type(input) == type(output) == bpy.types.NodeSocketVirtual:
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print("Cannot connect two virtual sockets together")
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return
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if output_node.type == 'GROUP_OUTPUT' and type(input) == bpy.types.NodeSocketVirtual:
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output_node.id_data.outputs.new(type(output).__name__, output.name)
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input = output_node.inputs[-2]
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if input_node.type == 'GROUP_INPUT' and type(output) == bpy.types.NodeSocketVirtual:
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output_node.id_data.inputs.new(type(input).__name__, input.name)
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output = input_node.outputs[-2]
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return input_node.id_data.links.new(input, output)
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# XXX Names are not unique. Returns the first match.
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def find_node_input(node, name):
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for input in node.inputs:
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if input.name == name:
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return input
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return None
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