Is there anyway to generate a cage from a surface? It seems to me that a cage has U,V, and W points. And extruded surface could have the same- theoretically.
I’ve simplified my geometry for this example. Let’s say I have a set of geometry that is oriented to a surface in a particular way and I want to taper it relative to the length of the surface (not linear like the taper command). I could see that if I had a cage with a UV that matched the base surface and a W height that matched the height of my geometry, that I could easily morph my geometry relative to is position on the surface. How can I get a cage to match the shape of the surface?
Is there another better approach to doing something like this? Tapering is only one conceivable morphing effect- what if I want to twist along the length of the surface? In my situation, it is not necessarily multiple geometries along a curve and the geometry is more complicated (currently the surface is flat, but that may change). I know I could script a solution in grasshopper, but I am trying to use Rhino more. If only there was something like
Surface Box (grasshopper) where you could edit its control points.
160509 Temp.3dm (91.5 KB)