sphere creation - minor tantrum

[mbostonsprint]

I have made a few comments previously related to spheres, and related topics about construction geometry. I realized just now, as I am trying to find some methods for creating planes in space oriented at specific compound angle relationships, that using a sphere as a relationship creator via centerpoint and diameter will allow some flexibility to do what I need, BUT -- why does creation of a sphere require selection of a plane?? By geometric definition, it's absolutely unnecessary. What is the need for this relationship in F360?

I can have a line vector with a point on the end, and have all I need to create a sphere, or for that matter, just a point in 3D space. I'm very curious about why the need for the plane. Thanks --

[jeff_strater]

You are right, technically, a sphere only requires a point and a radius.  But, Fusion is leveraging the sketch environment for placing that point.  This would let you, for instance, snap the sphere center to edges of a planar face, etc.  Plus, to be honest, we need the plane for other primitives (box, cylinder), so the machinery was already in place, so it was easy to reuse that for Sphere.

Jeff