Greetings fellow Rhino users. I have come across a problem with modelling a deformed sphere in a clean manner. I’ve tried various methods to make the curves into a clean surface, the only one i had any success with is Network Srf. However I can only make it work on one half of the sphere. When I join the 2 halves, the curvature between the 2 halves is not clean and presents a break.
Any tips to create a nice clean curvature continous surface would be much appreaciated!
Thank you for your example. That’s a very elegant solution. I mistakenly named my topic sphere (now edited), I was actually modelling a demi sphere, and it’s the 2 halves of this demi sphere which did not join up very well. Your model works a lot better, however it doesn’t match the curves perfectly. My problem is that i’ve already launched the fabrication of this shell using the curves, and I now need to integrate structural elements which reference a clean 3D model!
I presume you made a sphere, rebuilt it with more points, cut it in half and dragged control points to line them up with the reference curves?
If tolerance is not super-important (read if it’s for visual use only, and not for manufacturing) then Patch’ing two circles can also give a good result.
Or make it in SubD.
I would use either “Revolve” (for perfect circles) or “Rail revolve” (for non-circular shapes). Simple to edit with a History-enabled profile curve. Note: Works if the goal is to maintain the height of the object.
Looks like in your case the solution by @Gijs is good for shapes with irregular top shape. If you want to be able to match two mirrored half spheres, then I suggest to split the sphere across its other direction, leaving the end points in the middle, then split the sphere in half and crop it.
