Thanks for the reply, Imran, that clears it.
The math is done by Cinema4D, but yes, a faster way would be just a click a few symbols and have the target number as a simple entry field.
I have build one for you. It works for polygon-based objects. The XPresso Tag can be placed into the Tag Presets, as shown in the screen capture.
Just chose which axis the target size belong to and click on ‘change’. Done. If no longer needed, delete the Xpresso Tag.
Scene file / screen capture
https://www.amazon.com/clouddrive/share/js4fJXTHcs4HOsZVSlmBfa1KBcF6dYTyL3l3uuiZkhs
At the moment I can’t think of something more straightforward. If I find anything, I will update this post.
ENJOY