This script core dumps blender 2.28, what am I doing wrong?

Coding Python Support
1

I am trying to put an sphere to spin around its axis, like a planet. The last line was originally


 ob.setIpo(ipo)

but the new python API complains that it’s not allowed, so I tried to link the objects (last line) then crash!. Any hint?


from Blender import Ipo, Object
from math import *

ipo = Ipo.New('Object', 'ObIpo')                   
curve = ipo.addCurve('RotZ')                     
curve.setInterpolation('Linear')     
curve.setExtrapolation('Cyclic')    

curve.addBezier((0.0, 0.0))          
curve.addBezier((100.0, 2*pi))     

curve.update()                              

ob = Object.get('Planet')
ob.link(ipo)
2

I forgot to say that the original script worked on 2.27, didn’t worked on 2.28 and worked again (until before the last line) with 2.28a.

3

try to remove update line…

4

Segfaults! But if I insert a rot keyframe by hand, and run it, it aparently works, I can see lines in the ipo window, but the object still doesn’t move.

5 

curve.setInterpolation('Linear')
curve.setExtrapolation('Cyclic_extrapolation')

curve.addBezier((0.0, 0.0))
curve.addBezier((100.0,9.0))

This worked fine in 2.28a.

6

Hi,

can you send me a .blend file that causes the crash? I’ve tried your script, but at my system, I cannot get it to crash. (e-mail: [email protected])

Blender should under no circumstances crash. When a user makes an error, this should be notified in a nicer way :slight_smile:

Thanks in advance,
Michel

7

crashes on my pc too, like such ‘link’ lines did on 228
simplistic workaround:

when you create an object, just add an ipo to it in f6 window. Then just addCurve-s and points to it’s already present ipo (which acts as a sort of placeholder and prevents ‘link’ crashes) and do curve.update() via your script. Works smooth for me. I guess simpler=better in such turbulent times :-).

btw: there is a plea for rvk help down in the forum. Can some of gurus ‘p l e a s e’ look at it, contemplate it and ‘please again’ post some sort of working snippet. (this is above my comprehention plus, it kills my time badly)