Hi,
The Sketch and Toon render settings are stored in the related video post, not the render data.
The video posts are stored in a list, the first element of that list can be obtained with GetFirstVideoPost()
on the associated render data.
Then loop trough all video posts simply with GetNext()
and check the type of the current video post.
Here is some code:
rd = doc.GetActiveRenderData()
if rd is None:
return
vpost = rd.GetFirstVideoPost()
if vpost is None:
return
found = False
while vpost:
found = vpost.GetType() == 1011015
if found:
print "Found S&T VideoPost"
break
vpost = vpost.GetNext()
if found:
print vpost[c4d.OUTLINEMAT_SHADING_BACK]
print vpost[c4d.OUTLINEMAT_SHADING_QUANTISE_LEVEL]