CGTalk - A large stone brick.

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IckisMonster

01-18-2007, 05:59 PM

Hello.

I'm trying to create a single stone, see this picture for some idea:

http://www.actioninengland.gb.com/EnglandPictureFolder/Hadrian's%20Wall.jpg

I'm not able to get the geometry quite right. Here's what I've tried so far. The things I'm mentioning may be more 3d max orientated. However I'm positive that the general technique can be applied to any modelling program.

1) Create a box and convert to edit poly.
2) Add a noise modifier with the settings:
Fractal - Roughness 1
Fractal - Iterations 10
Strength X - 1
Strength Y - 1
Strength Z - 1

Although this appeared to make the edges waaaaay too sharp:
[img=http://img257.imageshack.us/img257/1641/attempt1np1.th.jpg] (http://img257.imageshack.us/my.php?image=attempt1np1.jpg)

When I put a mesh smooth on it makes the edges a bit too noticable:
[img=http://img401.imageshack.us/img401/4571/attempt2ta0.th.jpg] (http://img401.imageshack.us/my.php?image=attempt2ta0.jpg)

So, I tried the above steps, but once I created the editable poly I chamfered the edges and tried the above, but this came out:
[img=http://img260.imageshack.us/img260/3078/attempt3mt8.th.jpg] (http://img260.imageshack.us/my.php?image=attempt3mt8.jpg)

Does anybody have any pointers that may help?

Thanks!
IM

dablik

01-18-2007, 06:30 PM

well, what about chamfering the edges?

IckisMonster

01-18-2007, 06:32 PM

well, what about chamfering the edges?
"So, I tried the above steps, but once I created the editable poly I chamfered the edges and tried the above, but this came out:
[img=http://img260.imageshack.us/img260/3078/attempt3mt8.th.jpg] (http://img260.imageshack.us/my.php?image=attempt3mt8.jpg)"

ManDay

01-18-2007, 06:49 PM

So, I tried the above steps, but once I created the editable poly I chamfered the edges and tried the above, but this came out:
[img=http://img260.imageshack.us/img260/3078/attempt3mt8.th.jpg] (http://img260.imageshack.us/my.php?image=attempt3mt8.jpg)

I think it looks a'ight and acceptable so far

...apart the fact it would look a lot more like a stone if it just wasnt pink ;)
Apply a further more detailled bumpmap to the cube to give it a final roughness.

Regards, ManDay

IckisMonster

01-18-2007, 06:53 PM

I think it looks a'ight and acceptable so far

...apart the fact it would look a lot more like a stone if it just wasnt pink ;)
Apply a further more detailled bumpmap to the cube to give it a final roughness.

Regards, ManDay

Hehe, yeah I guess the pink colour isn't helping much... Although I'm trying to get more detail into the geometry rather than rely on a texture? Any suggestions for that?

Fency

01-19-2007, 02:02 AM

ManDay

01-19-2007, 04:26 AM

There is nothing like a sculpt tool in max.

IckisMonster

01-19-2007, 07:53 AM

Well I’m not a max user but I would definitely chamfer these edges more and don’t rely on a noise modifier to do all your work for you. I cant see your wire frame and I don’t know what kind of poly count your going for but try and use a sculpt tool and manually move some geometry around.

You're the second person to mention chamfering the edges, which part of the stage are you meaning? I tried chamfering the edges after I converted it to a poly as shown in the third picture.

I'd rather not have to create the bricks by hand because there's a lot of bricks I'd need to do! :)

Thanks very much.
IM.

newellteapot

01-19-2007, 11:31 AM

Hi!

Just a question, you don't by any chance access to Zbrush?
Anyway, what I would suggest is that before applying displacements and bumps you do a bit of manual modeling. You can do it on 3 different stones, to have variety (obviously, thay can be roated, to have loads of variety). Also, make some low res ones for the bricks far away.
Good luck ;)

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