Fix for issue 4255 - Do not clear points when the number of curves is zero #4320
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Overview: What does this pull request change?
The method pointwise_become_partial in the class VMobject resets the point defining the object to zero, if there is only one point.
The change simply lets the point be unchanged.
Motivation and Explanation: Why and how do your changes improve the library?
The suggested change fixes issue #4255 .
Further Information and Comments
See more comments to the issue here:
#4255 (comment)
Reviewer Checklist