TempUVHandle always None! Why?

ThomasB

Hi,
I am not able to get the TempUVHandle from an active UVWTag in R21.
It returns always "None".
In the following script I created a simple plane in a TempDoc and took the cache and inserted it into the TempDoc. It already has a UVW-Tag, then I have set the object active and so the UVWTag....

My Code:

import c4d

def main():
    temp = c4d.documents.BaseDocument()

    plane = c4d.BaseObject(c4d.Oplane)
    temp.InsertObject(plane)
    temp.ExecutePasses(bt=None, animation=False, expressions=False, caches=True, flags=c4d.BUILDFLAGS_NONE)
    
    plane_cache = plane.GetCache().GetClone()

    if plane_cache is None:
        raise Exception("no cache")

    temp.InsertObject(plane_cache)
    uvw_tag = plane_cache.GetTag(c4d.Tuvw)   
    temp.SetActiveTag(uvw_tag)
    temp.SetActiveObject(plane_cache)

    handle = c4d.modules.bodypaint.GetActiveUVSet(temp, c4d.GETACTIVEUVSET_UVWS)
    
    print(handle)
    

# Execute main()
if __name__=='__main__':
    main()

i_mazlov

Hi @ThomasB,

Please note that R21 is generally out of scope of full support on this forum. I've tried your code with the oldest C4D version I have (which is R25) and I cannot reproduce your issue.

However, looking in your code it seems like you might need an additional handling for the case when the texture view is not open, please have a look at the comment in our example: call_uv_command_r18.py .

You can also find some useful information on a similar thread, where Ferdinand gave some insights about GetActiveUVSet function: GetActiveUVSet() returns None if multiple UVs are active?.

Cheers,
Ilia

ThomasB

@i_mazlov
Thank you very much for the hint with the texture view and for the helpful links.
The second thread I have already read, but was not able to find the solution so far. I study these examples. Thank you.