I am seeing extreme slow downs when getting/setting weights using point
indexes in Maya 2023. Especially on getting, 100x slow downs. Using iomode
improves setting weight speeds to close to 2022 speeds but does not help
getting. Using open maya gets around this problem in 2023 but open maya and
setAttr, used in this way, was the same speed in 2022 and below.
In this example, getting the weights takes in the hundredths of second in
2022 and 3-5 seconds in 2023. Any one have a clue? Affects all updates of
2023.
import maya.cmds as mc
import time
mc.dgcontrol(iomode=True)
# Build a 30K point plane and cluster
geo = mc.polyPlane(sx=100, sy=300)[0]
cluster = mc.cluster(geo)[0]
# Weights
pnt_count = mc.polyEvaluate(geo, v=1)
weight_attr = f"{cluster}.wl[0].w[0:{pnt_count-1}]"
# Get weights
start_time = time.time()
weight_array = mc.getAttr(weight_attr)
print('GET Weights Time', time.time() - start_time)
# Set weights
start_time = time.time()
mc.setAttr(weight_attr, *weight_array)
print('SET Weights Time', time.time() - start_time)
mc.dgcontrol(iomode=False)
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