118 lines
3.2 KiB
Python
118 lines
3.2 KiB
Python
import bpy
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class AddCustomNode():
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nodes_file: bpy.props.StringProperty(
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name="nodes_file",
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subtype='FILE_PATH',
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default=""
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) # type: ignore
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node_type: bpy.props.StringProperty(
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name='node_type',
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description='',
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default='',
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subtype='NONE',
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maxlen=0
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) # type: ignore
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node_label: bpy.props.StringProperty(
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name='node_label',
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default=''
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) # type: ignore
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node_description: bpy.props.StringProperty(
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name="node_description",
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description="",
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default="",
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subtype="NONE"
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) # type: ignore
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node_link: bpy.props.BoolProperty(
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name='node_link',
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default=True
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) # type: ignore
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node_callback: bpy.props.StringProperty(
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name='node_callback',
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default=''
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) # type: ignore
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@classmethod
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def description(cls, context, properties):
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return properties.node_description
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def assign_node_tree(self, node):
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node.node_tree = bpy.data.node_groups[self.node_type]
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node.width = 200.0
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node.label = self.node_label or self.node_type
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node.name = self.node_type
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if self.node_callback:
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exec(self.node_callback)
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return node
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def get_node_tree(self, node_type, node_link):
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# try to get node from current file if exists
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node_tree = bpy.data.node_groups.get(node_type)
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# if not exists, get it from asset file.
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if not node_tree:
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bpy.ops.wm.append(
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'EXEC_DEFAULT',
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directory=f"{self.nodes_file}/NodeTree",
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filename=node_type,
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link=node_link,
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use_recursive=True
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)
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node_tree = bpy.data.node_groups.get(node_type)
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if node_tree:
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return node_tree
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else:
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raise RuntimeError('No custom node found')
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def add_node(self, node_group):
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# Deselect all nodes first
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for node in node_group.nodes:
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if node.select:
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node.select = False
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self.get_node_tree(self.node_type, self.node_link)
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node = node_group.nodes.new("GeometryNodeGroup")
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self.assign_node_tree(node)
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node.show_options = False
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return node
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class CUSTOMNODES_OT_Add_Custom_Node(bpy.types.Operator, AddCustomNode):
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bl_idname = "customnodes.add_custom_node"
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bl_label = "Add Custom Node"
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bl_options = {"REGISTER", "UNDO"}
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def execute(self, context):
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self.get_node_tree(self.node_type, self.node_link)
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# intended to be called upon button press in the node tree
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prev_context = bpy.context.area.type
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bpy.context.area.type = 'NODE_EDITOR'
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# actually invoke the operator to add a node to the current node tree
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# use_transform=True ensures it appears where the user's mouse is and is currently
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# being moved so the user can place it where they wish
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bpy.ops.node.add_node(
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'INVOKE_DEFAULT',
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type='GeometryNodeGroup',
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use_transform=True
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)
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bpy.context.area.type = prev_context
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node = bpy.context.active_node
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self.assign_node_tree(node)
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node.show_options = False
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return {"FINISHED"}
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