modelling principles

[dblhelix]

sorting out weird patches i run into one that refused to get covered.

then i realize this could have something to do with the shape of the piece; it could be interpreted as i kind of tube.

and i know for a fact there's a page about this somewhere but i can't find it.

what is the logic here; if i have a hole - well, two holes - with 4 or 5 CP's then it's not doable (=a patch) in principle; i need to plan around and model more to make the piece more of a mesh formation?

[Xtaz]

Can you post wireframe ?

[dblhelix]

Can you post wireframe ?

i closed my work'puter already, but how's this:

if you were to make a ring with 4 CPs, then select them and extrude twice, you'd have a pipe, or a tube.

the rings in the ends won't close up automatically. they don't form a patch.

i'm asking about the laws of a:m, how to plan ahead to avoid this.

if i recall correctly, the piece i'm working was modeled from the long side and then extruded.

[robcat2075]

if you were to make a ring with 4 CPs, then select them and extrude twice, you'd have a pipe, or a tube.

the rings in the ends won't close up automatically. they don't form a patch.

 

That's a feature not a bug. This prevents numerous internal patches on many extruded forms. Patches must have more than one spline for their sides.

 

You could fill the end by extending the 4 CPs and joining them to make an X over the open end.

 

Or by extruding the end ring once more and scaling that down to very,very small and moving that to be flat with the intended ending.

[dblhelix]

This prevents numerous internal patches on many extruded forms.

Patches must have more than one spline for their sides.

haaaa.

it's a part of a crown, not a pipe shape as such, the top of the piece forming a flattened bowl shape.

have to rethink the process from scratch.

 

thanks!