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Newbie retopology question


Fafnir_90
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I'm pretty new to 3DC and have been using Blender for roughly around 7 or 8 months now. Retopology isn't something I really ended up getting into with Blender and the auto-retopology in 3DC was pretty much one of the main selling points for me. I'm however coming across a pretty big problem with some models more than others, and can't really figure out why. Just after it's finished being retopologised 3DC crashes on me too fast to be able to make out the error.

 

Would someone be able to point me in the right direction with where I'm possibly going wrong? The model is just under 2 million polys so I'm not sure whether that's factoring into it.

 

Here's a quick screenshot if it's of any help: http://gyazo.com/635dd72c220ed4dd1e35404d88c524f8

 

 

Thanks.

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Hi Fafnir!

 

 

Which build are you using? Latest is here: http://3d-coat.com/forum/index.php?showtopic=10395&p=80738

 

Could you possibly show a screenshot of what your autopo mesh looks like as well?

 

If your sculpture is made of multiple layers, you could more easily autopo single parts, one at a time, then combine them in the Retopo Room manually.

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Hi Javis, thanks for the quick response.

 

I'm using Version 4.1.17 so it looks like I'm using the latest one. Just restricted to the educational license.

 

The model is all just one layer, mostly because I was unsure how to merge them all together afterwards. When trying to merge visible I tend to get an error.

 

This is about as far as I can make it with autopo before it bails out: http://gyazo.com/de2ac0e02c2917ca77d6c8702db30bb2

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Hi! :)

 

Hmm, yeah that mesh doesn't look quite right (regardless that it's a bake shell). Maybe try cutting the legs and other parts from the body using the Split tool, then running autopo on those parts. You don't need to move the parts at all, and can merge them all back together later with out any issues if you want to (or make a completed version, and smaller parts for the autopo routine).

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While I wasn't able to split the mesh in 3DC I was able to break it up into several pieces in Blender and it seems to have worked for getting each area done. I've had a few crashes along the way but it seems to be working out okay. I've managed to reduce the polycount down to around 20,000 now. which now looks like this: http://gyazo.com/13da7a39688e22f5677f95cb98228a2b

 

I'm a little unsure on how to merge all of these together, but I can just parent/child them when I get them into Leadwerks.

 

Thanks for your help Javis.

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Cool! That looks pretty good. :)

 

 

To combine the meshes, you'd need to weld the vertices together at the areas you wish to connect. Which can be done with 3DC in the Retopo Room using the Move Vertices tool, but might also be easier in Blender (or any modeling package).

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Looks like it was fairly simple in Blender, just selecting all the pieces and joining them together. Atleast I hope that was the way to do it, when I imported it into Leadwerks all the textures were still in the right spots so it looks like it's done the trick.

 

 

Thanks for all the help. Feel like I'm just about getting the hang of this now.

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  • 2 weeks later...
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I'm having another slight problem with retopo again. Pretty much the same problem as before where it crashes just before it's done except this time the mesh is split into several pieces.

 

http://gyazo.com/f38a7d0cf2aec863b7d4fe1eb4f672bd It's the teeth with this one that don't seem to be working out well and I'm really unsure what to do with it.

 

It manages to make it up to here but as soon as I click Ok it just crashes without saying anything: http://gyazo.com/ca5a8a256fe28f100d6205398fc4fd48

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I'm using Autopo. It doesn't really seem to matter much about what I'm doing, it always just seems to crash at that exact point.

 

Is it what I'm doing before getting there or is there by any chance a corrupt file in my 3DC that's causing it?

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I suggest using the topology tools and doing this manually.  It seems a daunting thing, but it's actually quite easy.  The problem you might have is trying to topologize particular sections that are close together, but if your model is broken down into parts on different layers, it's easy enough to turn on/off the ones you do or do not want to deal with.  If you ever want to topologize them as a whole body, you can still do that.

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I suggest using the topology tools and doing this manually.  It seems a daunting thing, but it's actually quite easy.  The problem you might have is trying to topologize particular sections that are close together, but if your model is broken down into parts on different layers, it's easy enough to turn on/off the ones you do or do not want to deal with.  If you ever want to topologize them as a whole body, you can still do that.

 

That definitely seems like it would be the better idea. The whole retopology thing is still pretty new to me, at the most I've only been able to make some pants with it to use for the cloth tool.

 

I was also wondering if there's anyone around who does training over Skype or something along those lines? I usually find that helps me learn better than going through things on my own.

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