glTF exporter: cleanup object animation curves when animation is constant
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@ -15,7 +15,7 @@
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bl_info = {
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'name': 'glTF 2.0 format',
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'author': 'Julien Duroure, Scurest, Norbert Nopper, Urs Hanselmann, Moritz Becher, Benjamin Schmithüsen, Jim Eckerlein, and many external contributors',
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"version": (1, 7, 29),
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"version": (1, 7, 30),
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'blender': (2, 91, 0),
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'location': 'File > Import-Export',
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'description': 'Import-Export as glTF 2.0',
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@ -317,7 +317,7 @@ def gather_keyframes(blender_object_if_armature: typing.Optional[bpy.types.Objec
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# We can ignore this keyframes
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# if there are some fcurve, we can keep only 2 keyframes, first and last
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if blender_object_if_armature is not None:
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cst = all([j < 0.0001 for j in np.ptp([[k.value[i] for i in range(len(keyframes[0].value))] for k in keyframes], axis=0)])
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cst = fcurve_is_constant(keyframes)
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if node_channel_is_animated is True: # fcurve on this bone for this property
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# Keep animation, but keep only 2 keyframes if data are not changing
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@ -325,10 +325,18 @@ def gather_keyframes(blender_object_if_armature: typing.Optional[bpy.types.Objec
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else: # bone is not animated (no fcurve)
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# Not keeping if not changing property
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return None if cst is True else keyframes
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else:
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# For objects, if all values are the same, we keep only first and last
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cst = fcurve_is_constant(keyframes)
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return [keyframes[0], keyframes[-1]] if cst is True and len(keyframes) >= 2 else keyframes
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return keyframes
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def fcurve_is_constant(keyframes):
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return all([j < 0.0001 for j in np.ptp([[k.value[i] for i in range(len(keyframes[0].value))] for k in keyframes], axis=0)])
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def complete_key(key: Keyframe, non_keyed_values: typing.Tuple[typing.Optional[float]]):
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"""
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Complete keyframe with non keyed values
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