Hello all,
Recently I started with subD modelling and would like to use this powerful feature for future projects. The projects and its shapes are setup by using input curves.
I would like to know if it is possible to setup a subD shape based on these same input lines.
For example the lines shown on the screenshots, which can also be found in the attached model itself.
tbl01.3dm (373.5 KB)
Your assistance is much appreciated,
Roderick
subd is verrry different than nurbs modeling-
take a look at this video for a good starting point
Hi Kyle,
Thanks for your reply and sharing this video.
I understand that both methods are very different and each has it’s own specific way of creating a model.
One of the challanges in this case is a very small radii (exact 50mm) which is mandatory for the construction later on. Is there a way to let SubD take this into account?
Thanks again, I look forward to your reply.
Crease that area, then when you are doing the final details, convert to nurbs, and add a nurbs fillet of the exact size you need.
Thanks again for your input, Kyle.
My colleague can remember that he has seen a combination between curves and SubD. So just to be sure, there isn’t a command which uses curves to create/modify/incorporate the subD shape?
Hi @Roderick_Groeneveld
There are plenty of commands that will let you create Sub-D’s based on curves; SubDSweep1, SubDSweep2, SubDLoft, Extrude with Output=SubD. But Sub-D’s are a very different beast from creating NURBS surfaces from curves, and hardly ever will a set of curves fit for NURBS be fit for SubD and vice versa. Another thing is geometrical features like fillets. Due to the nature of Sub-D surfaces an exact rolling ball fillet isn’t possible. With enough subdivisions you can get very close and even within tolerance, but at the cost of (often too much) complexity. If the input curves you have are to be strictly followed and the resulting geometry to be within a tight tolerance of those input curves, I would personally stick to NURBS surfaces. If the input curves are more a set of visual guide lines, Sub-D’s are easy to manipulate, quick to edit and create variations and lets you easily create flowing, organic shapes.
My 2 cents 
-Jakob
quadremesh can use guide curves, and they will influence the shape and flow of a quad based mesh. That mesh can then be used to convert to a subd.
I may be misunderstanding the question, but if you are referring to something like “sculpt curves” that you can use to influence the subd part, we do not have those yet.
