Huge request to tune some coefficients in which the smoothed cube becomes an ideal sphere, and smoothed square becomes an ideal circle. It seems insignificant, but it is not.
For example, if you want to create a round hole, enough to remove one polygon.
Presently time the smoothing square becomes “almost” round. But angles of the hole is particularly noticeable when the axis is rotated in this.
[ATTACH=CONFIG]390417[/ATTACH] . [ATTACH=CONFIG]390416[/ATTACH]
To fix this we need to use a concave polygon, which often creates problems.
Or create loops through the whole model.
This greatly increases the number of polygons, and can cause problems in other parts of the model. For high poly models it creates a lot of difficulties, especially when a few holes.
This is just one example. Often, in order to achieve a beautiful smooth the need to make great efforts.
I have long been using Blender and have dreamed about this fix. Now, when OpenSubdiv not yet entered into Release, can make it. Alternatively, we can make a separate mode for this.
In https://developer.blender.org/rB3524676036c370822344f1c80b191d34644b3745 have been prompted to do so for the default SubDiv, but it was rejected because of backward compatibility.
EDIT: It is always possible to make a circle with angles using crease edges, converse is not possible