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workinf_Blender_Wasm/tools/web/generate-compositor-fixture.py
2026-08-14 18:08:29 -04:00

48 lines
1.8 KiB
Python

import pathlib
import sys
import bpy
def main(output_path):
bpy.ops.wm.read_factory_settings(use_empty=True)
scene = bpy.context.scene
scene.name = "CompositorScene"
tree = bpy.data.node_groups.new("WebCompositorTree", "CompositorNodeTree")
scene.compositing_node_group = tree
tree.interface.new_socket(name="Image", in_out="OUTPUT", socket_type="NodeSocketColor")
color = tree.nodes.new("CompositorNodeRGB")
color.name = "WebConstantColor"
color.outputs["Color"].default_value = (0.125, 0.25, 0.5, 0.75)
exposure = tree.nodes.new("CompositorNodeExposure")
exposure.name = "WebExposure"
exposure.inputs["Exposure"].default_value = 1.0
invert = tree.nodes.new("CompositorNodeInvert")
invert.name = "WebInvert"
viewer = tree.nodes.new("CompositorNodeViewer")
viewer.name = "WebViewer"
composite = tree.nodes.new("NodeGroupOutput")
composite.name = "WebComposite"
glare = tree.nodes.new("CompositorNodeGlare")
glare.name = "PreservedUnsupportedGlare"
tree.links.new(color.outputs["Color"], exposure.inputs["Image"])
tree.links.new(exposure.outputs["Image"], invert.inputs["Color"])
tree.links.new(invert.outputs["Color"], viewer.inputs["Image"])
tree.links.new(invert.outputs["Color"], composite.inputs["Image"])
path = pathlib.Path(output_path).resolve()
path.parent.mkdir(parents=True, exist_ok=True)
bpy.ops.wm.save_as_mainfile(filepath=str(path), compress=False)
print(f"compositor-fixture-generated path={path} nodes={len(tree.nodes)} links={len(tree.links)}")
if __name__ == "__main__":
arguments = sys.argv[sys.argv.index("--") + 1:]
if len(arguments) != 1:
raise SystemExit("usage: blender -b --python generate-compositor-fixture.py -- output.blend")
main(arguments[0])