I apologize, the translator does not help much, as I said, I created a spline chain, where the depth of its handles depends on the length of the spline, my problem was that when I did it with only xpresso, it showed errors when rotating, because it took time update.
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thinking that the error was either hierarchy, the spline node, or how to order the xpresso I did the same thing but with a python tag, despite this the same problem was present.
import c4d
#Welcome to the world of Python
def main():
spline = op[c4d.ID_USERDATA,2] # spline object
length = c4d.utils.SplineLengthData(spline)
length.Init(spline)
Long = length.GetLength()
op[c4d.ID_USERDATA,1][10004] = Long /3.783
#[10004] = control depth 1 iKsplinetag
op[c4d.ID_USERDATA,1][10014] = Long /3.783
#[10014] = control depth 2 iKsplinetag
length.Free()
c4d.EventAdd()
And speaking of the number "3,783" I used it only for my purpose as it corrected the strength of the depth of the controls
SplineL.c4d