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FBX IO: Speed up animation export using NumPy #104884

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Thomas Barlow merged 12 commits from Mysteryem/blender-addons:fbx_anim_export_numpy_intermediate into main 2023-09-19 01:13:25 +02:00
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1 changed files with 13 additions and 5 deletions
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18
io_scene_fbx/export_fbx_bin.py
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@ -2265,6 +2265,13 @@ def fbx_animations_do(scene_data, ref_id, f_start, f_end, start_zero, objects=No
# Iterate through each frame and yield the values for that frame.
int_currframes = currframes.astype(int)
subframes = currframes - int_currframes
# Create simpler iterables that return only the values we care about.
animdata_shapes_only = [shape for _anim_shape, _me, shape in animdata_shapes.values()]
animdata_cameras_only = [camera for _anim_camera_lens, _anim_camera_focus_distance, camera
in animdata_cameras.values()]
# Previous frame's rotation for each object in animdata_ob, this will be updated each frame.
animdata_ob_p_rots = p_rots.values()
# Iterating .data, the memoryview of an array, is faster than iterating the array directly.
for real_currframe, int_currframe, subframe in zip(real_currframes.data, int_currframes.data, subframes.data):
scene.frame_set(int_currframe, subframe=subframe)
@ -2276,17 +2283,18 @@ def fbx_animations_do(scene_data, ref_id, f_start, f_end, start_zero, objects=No
# ObjectWrapper caches its instances. Attempting to create a new instance updates the existing
# ObjectWrapper instance with the current frame's matrix and then returns the existing instance.
ObjectWrapper(dup)
for ob_obj in animdata_ob:
next_p_rots = []
for ob_obj, p_rot in zip(animdata_ob, animdata_ob_p_rots):
# We compute baked loc/rot/scale for all objects (rot being euler-compat with previous value!).
p_rot = p_rots.get(ob_obj, None)
loc, rot, scale, _m, _mr = ob_obj.fbx_object_tx(scene_data, rot_euler_compat=p_rot)
p_rots[ob_obj] = rot
next_p_rots.append(rot)
yield from loc
yield from rot
yield from scale
for anim_shape, me, shape in animdata_shapes.values():
animdata_ob_p_rots = next_p_rots
for shape in animdata_shapes_only:
yield shape.value
for anim_camera_lens, anim_camera_focus_distance, camera in animdata_cameras.values():
for camera in animdata_cameras_only:
yield camera.lens
yield camera.dof.focus_distance