Simple question but I can't do this..help

[phix95]

I feel like a retard...but here goes:

 

I have a simple rectange spline. I refined it by adding a vertex on either side of the rectangle (like a ladder rung). I cannot connect them! No matter what I do the rung spline is always separate. What am I missing here?

[danb4026]

Under "edit spline" in vertex sub-0bject mode, click "create line" and go from one vertex to the other. That will create your rung.

[phix95]

I tried that...the line is still separate. And weld doesnt work.

[SandmanNinja]

I'm thinking they are 2 separate objects. They have to be all part of the same object for weld to work.

 

Pick one object

click ATTACH

press H

pick the other spline(s)

click ATTACH to turn it off

 

You can now create a line between the verts or weld them (if they are close enough)

 

Hope that helps

[danb4026]

Thats right, it would need to be attached. I was assuming he was working with the same spline object within vertex sub-object.

[mattclinch]

as far as i'm aware.... you cannot do it that way - at least not with a single spline.

each spline must have one 'first vertex' and then loop a path round that finishes at that same vertex (think of it as a simple 'series' circuit in electronics), or be open ended.

the way you are trying to model it effectively creates two of these loops together (a 'parallel' circuit is we continue the electronics analogy), and there can be no defined 'first vertex' of that spline - this is why you cannot connect them.

 

i would suggest modelling it with multiple detailed splines attached together or converting it to geometry and then using the 'connect' option on the two edges.

Edited May 6, 2008 by mattclinch

[lecameleon]

as far as i'm aware.... you cannot do it that way - at least not with a single spline.

each spline must have one 'first vertex' and then loop a path round that finishes at that same vertex (think of it as a simple 'series' circuit in electronics), or be open ended.

the way you are trying to model it effectively creates two of these loops together (a 'parallel' circuit is we continue the electronics analogy), and there can be no defined 'first vertex' of that spline - this is why you cannot connect them.

 

i would suggest modelling it with multiple detailed splines attached together or converting it to geometry and then using the 'connect' option on the two edges.

 

 

Exactly... A spline is an independent entity with a first and a last vertex. This is something that is not possible with the "ladder" shape described. As my friend here has described so aptly, it is like the Parallel circuit in EE or EC Engg.

[amer abidi]

exactly.. you'de need to squares on top of one another inside a rectangular area to creat a ladder profile (if say, for extruding or lofting). Otherwise, i dont see a reason why you would want to weld as it is simply not possible since the mid line has two vertices looking for one 'first'.

 

You can weld two vertices together in the same shape, but not 3 if each has its own directional segment, if you know what i mean.