Govern task context and advance execution pointer

tools/web/generated/M16-GAP-00013.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def set_socket(node, name, value):
+    socket = node.inputs.get(name)
+    if socket is not None:
+        socket.default_value = value
+
+
+def main(output: pathlib.Path) -> None:
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    material = bpy.data.materials.new("WebGapMaterial")
+    material.use_nodes = True
+    material.diffuse_color = (0.2, 0.4, 0.8, 0.9)
+    nodes = material.node_tree.nodes
+    links = material.node_tree.links
+    principled = nodes.get("Principled BSDF")
+    output_node = nodes.get("Material Output")
+    if principled is None or output_node is None:
+        raise RuntimeError("default Principled/Output nodes are missing")
+    set_socket(principled, "Base Color", (0.2, 0.4, 0.8, 0.9))
+    set_socket(principled, "Metallic", 0.35)
+    set_socket(principled, "Roughness", 0.6)
+    set_socket(principled, "IOR", 1.6)
+    set_socket(principled, "Specular IOR Level", 0.35)
+    set_socket(principled, "Transmission Weight", 0.27)
+    set_socket(principled, "Coat Weight", 0.64)
+    set_socket(principled, "Coat Roughness", 0.12)
+    set_socket(principled, "Emission Color", (0.05, 0.1, 0.2, 1.0))
+    set_socket(principled, "Emission Strength", 3.5)
+    set_socket(principled, "Alpha", 0.9)
+    if not any(link.from_node == principled and link.to_node == output_node for link in links):
+        links.new(principled.outputs["BSDF"], output_node.inputs["Surface"])
+    mesh = bpy.data.meshes.new("WebGapMaterialMesh")
+    mesh.from_pydata([(-1.0, -1.0, 0.0), (1.0, -1.0, 0.0), (0.0, 1.0, 0.0)], [], [(0, 1, 2)])
+    mesh.materials.append(material)
+    obj = bpy.data.objects.new("WebGapMaterialObject", mesh)
+    bpy.context.collection.objects.link(obj)
+    bpy.ops.wm.save_as_mainfile(filepath=str(output.resolve()), check_existing=False, compress=True)
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --python M16-GAP-00013.py -- OUTPUT")
+    main(pathlib.Path(arguments[0]))