advanced example

tools/smoke_blending.py

@@ -0,0 +1,36 @@
+"""Real UE test of Python-authored crossfades using existing character assets."""
+import json
+
+import unreal
+
+from ue_workshop import Scene, Sequence, Renderer, camera, lighting
+from ue_workshop.characters import CREATURE_MODEL
+from ue_workshop.paths import PROJECT
+
+scene = Scene("BlendingSmoke")
+character = scene.skeletal_model(
+    CREATURE_MODEL, name="Creature", rotation=(0, 0, 180), reimport=False)
+scene.primitive("Cube", name="Floor", location=(0, 0, -10), scale=(20, 20, 0.2))
+lighting.studio(scene)
+cam = camera.create(scene, location=(450, -550, 300), fov=45)
+shot = Sequence(scene, frames=144, fps=24)
+shot.camera(cam)
+first = shot.animation(character, "mutant_idle", start=0, end=60)
+middle = shot.animation(character, "mutant_swiping", start=48, end=108)
+last = shot.animation(character, "mutant_walking", start=96, end=144)
+def keys(section):
+    return [(key.get_time().frame_number.value, key.get_value())
+            for key in section.get_all_channels()[0].get_keys()]
+
+assert keys(first) == [(0, 1.0), (48, 1.0), (60, 0.0)]
+assert keys(middle) == [(48, 0.0), (60, 1.0), (96, 1.0), (108, 0.0)]
+assert keys(last) == [(96, 0.0), (108, 1.0)]
+shot.transform_key(character, 48, location=(0, 0, 0))
+shot.transform_key(character, 107, location=(100, 0, 0))
+shot.save(open_editor=False)
+unreal.LevelSequenceEditorBlueprintLibrary.open_level_sequence(shot.asset)
+unreal.LevelSequenceEditorBlueprintLibrary.set_current_time(54)
+unreal.LevelSequenceEditorBlueprintLibrary.refresh_current_level_sequence()
+(PROJECT / "Saved/Workshop/blending_smoke.json").write_text(
+    json.dumps({"blend_display_frames": 12, "clips": 3}), encoding="utf-8")
+renderer = Renderer(width=640, height=360, samples=1, warmup=0, mp4=False)