How do I define and/or find the "Center point control object" in my plan so the 3D Aerial View image can come back to the center ???

Puybaret,
Obviously you got upset for insisting with my question, is just that something so simple as a curve surface/wall in a vertical way cannot be created in SH3D and that is not my fault.
Stop calling my postings "polluting" ... other wise you would have to call "polluting" many participations ...

There's no way to turn a wall from vertical to horizontal in SH3d .... the same as there's no way to bend a wall nor a roof to build a arch surface.
If you know a better way to achieve such task, let us know since I'm not the only one asking that question.

Actually, the question should be ... why a wall can not be turned from horizontal to vertical ?

Why a wall can not be turn east to west in SH3D ???

How do you bend or arch a floor ? ... How do you create a arch shape like a small bridge ?