LNXSDK/leenkx/blender/lnx/logicnode/event/LN_on_render2d.py

from lnx.logicnode.lnx_nodes import *


class OnRender2DNode(LnxLogicTreeNode):
    """Registers a 2D rendering callback to activate its output on each
    frame after the frame has been drawn and other non-2D render callbacks
    have been executed.
    """
    bl_idname = 'LNOnRender2DNode'
    bl_label = 'On Render2D'
    lnx_version = 2

    def lnx_init(self, context):
        self.add_input('LnxIntSocket', 'Index')

        self.add_output('LnxNodeSocketAction', 'Out')
        self.add_output('LnxDynamicSocket', 'Render2D')
        self.add_output('LnxIntSocket', 'Index', default_value = -1)


    def get_replacement_node(self, node_tree: bpy.types.NodeTree):
        if self.lnx_version not in (0, 1):
            raise LookupError()
            
        return NodeReplacement.Identity(self)