[REQ] greeble modeling rand extrusion expression

[smaugthewyrm]

REVISED:

i found the challenge archive for greebles... now that is some cool stuff.

am dl'ing the hips now.

ok, i think i am very close...

i'd like to achieve these pics.

am stuck at trying to vary the amount of extrusion on a per poly basis.

so far my approach is to make unique each quad with a facet and then create a group from each quad. the grid and sinewave were no problem.

would a foreach approach work here?

'foreach' group, polyextrude by this random amount...

meanwhile, i'll do some reading on the foreach sop.

hip file attached. any help would be appreciated.

Edited May 26, 2012 by smaugthewyrm

[michael]

try something like this:

greeblescene1.hip

[rdg]

Michael,

what's the deal with the foreachSOP?

Where's my attachment?

Edited October 18, 2010 by rdg

[rdg]

Ah! There it is.

greeblescene2.hip

[smaugthewyrm]

both work nicely. i really was very close. lolz.

i kicked them both up to 80 x 80 size and divisions and toyed with the extrude inset expression...

michael's hip

rdg's hip

michael, why did the max expression work, rather then a fit01?

before your post i was working out this, but it didn't work out.

fit01(rand($PR * 1 * stamp("..", "FORVALUE", 0)), 0.5, 1)

and rdg, you didn't even need to use foreach.

for some reason, using the foreach output 10 times as many polygons (560k vs 56k) while using the

same grid specs to begin.

anyway, thank you both very very much. i'll post the final pics if you'd like in WIP.

woot!

Edited October 18, 2010 by smaugthewyrm

[rdg]

If you modify the rands in my hip you can achieve the same look as in Michael's hip.

[smaugthewyrm]

If you modify the rands in my hip you can achieve the same look as in Michael's hip.

i see that. yep. i've taken it a bit farther still.

i'll wrap it all up in an asset eventually. simple vari-extruded-poly greebles are pretty useful.

thanks again dude.

Edited October 18, 2010 by smaugthewyrm

[michael]

@rdg - I just edited the file from smaugthewyrm

[rdg]

@michael: I just wondered as my h10 might have lost some h11 magic when opening the file.

Actually I wondered if the foreachSOP was meant to do this:

Watchout I am going to attach a file ...

Extruding in a loop to ensure the extruded things have semi-evenly-spaced divisions.

greeblescene3.hip

[smaugthewyrm]

well, i had some fun with this. the biggy that i learned here is just how expensive for each is.

it was generating the 'floor tubes' to a 2.2GB bgeo !!! by only moving the extrude sequence out of the foreachsop made a huge huge

difference.

also it turned out to be lots of fun smoothing out the floor tubes. the ray sop over that complex floor was just messy. lolz.

hip file attached for fun. it would be kewl to animate the ripple of the floor and the twist of the tubes. my wee little computer just

couldn't handle the render. 1 frame took a few hours as it is. hahaha.

thanks guys for the help.

reference:

http://cg.tutsplus.com/tutorials/maxon-cinema-4d/create-a-gorgeous-abstract-greeble-scene-in-cinema-4d/

REVISED: attachment didn't stick. here is the hip file hosted at mediafire:

greeble scene

Edited October 22, 2010 by smaugthewyrm