View Full Version : Weird turbosmooth distortion

09 September 2009, 01:38 AM
Hey guys, ive recently made the frame for the gun i was trying to create. Now this is a low poly frame, 220 tris, with no Ngons(atleast im pretty sure theres no Ngons). It looks like this: (
(Click to enlarge)

Now ive cloned the frame and renamed it in order to create a high poly version using turbosmooth. So i applied the turbosmooth modifier, and got to work hardening/softening edges as i saw fit. I came to an error though, caused by something unknown to me. Some holes and distortion occured near some edges/vertices. They looked like this: (
(Click to enlarge)

Now i dont know what has caused these errors, or how to fix them. So any help/sugestions are very appreciated, thanks.

09 September 2009, 05:25 AM
Okay, the two problems that immediatly stood out to me were these...

Geez that's a huge picture. Anyways, the red circle on the left indicates an n-gon that you probably missed. Just add another loop to fix that. The circle on the right shows ugliness due to the weird shape you've made the polygon conform a rule for myself, I dont let the polygon turn into 2 triangles by draggin the vertex into itself, keep it as a rectangle. No idea if you always have to do this, but I always get errors when I have that. I did a quick mockup to show what I mean.

Another ginormous picture. On the right, you can see with the loop added it doesn't get all messy, and I turned the one ugly poly into two quads, which looks not-ugly.

EDIT: Slightly off-topic, but is there any faster way to upload pictures to a thread rather than through imageshack, like directly to cgsoc?

09 September 2009, 06:19 AM
OK. Thanks for the quick reply. In regards to your pictures:

Left circle: Yes i did miss that N-gon thanks for pointing it out to me. Now what do you mean by "add another loop to fix that?" And where should this loop go?

Right circle: I assume you mean keep it a rectangle by using the "target weld" function? But if i keep it as a rectangle, it wont be the correct shape for the handle. So how should i go about changing it to two quads?

Thanks for the help btw ;)

09 September 2009, 06:07 PM
For the first problem, just make the edges go off to the left. Eventually, it will loop around and hit itself, if the object is symmetrical on the back.

For the second problem, there's all sorts of fun stuff you could do.

I did these really fast, but it's just to show you that it's not too difficult to divide stuff into quads...biggest thing to remember is that even if everything is in quads, your mess can still have huge issues.

09 September 2009, 09:49 PM
OK, for the first problem, i still dont get it. Which edges do i move to the left? What do you mean go off to the left? If i drag that edge, it'll drag the whole mesh out of shape.

Thanks for the help with the second problem ;)

09 September 2009, 11:03 PM
The vert circled on the left needs to be joined with it's opposite vert on the other side(of the hole)by means of creating continuous edges to form an "edgeloop" from vert to vert.

09 September 2009, 12:37 AM
Ohhhh i get it! I just realised wat iron was trying to say lol. Ok so the edge loop needs to go off to the left, around the back of the gun and meet up with the opposite vertex on the other side of the gun. Done that. But thats caused another triangle to pop up, and this one i have no idea how to get rid of. (
(Click to enlarge)

Its at the bottom left corner of the model. I cant figure out any way to get rid of it.

Thanks for any the help.

09 September 2009, 11:42 AM
That created a Tri and a 5 sided NGon next to it. These two can easily be turned into two quads...

09 September 2009, 12:35 PM
Ahh i can to, by connecting the two unlinked vertices, but wont that create the triangle problem Iron was talking about in one of his earlier posts?

09 September 2009, 03:57 PM
bring the edgeloop ALL the way around.So you will have a parallel row of edges above the bottom row of edges.

09 September 2009, 10:43 PM
Oh ok yeah that should work thanks a heap everyone!

So ive done that, it worked btw, and fixed up the little double triangle thing Ironwarrior was talking about, so now id just like you guys to check to see if there are any tris or N-gons i missed.

Ive already checked and cant find any, but two sets of eyes see more than one. (
(Click to enlarge)

Thanks for all your help guys btw!

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09 September 2009, 10:43 PM
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