Integrating 3D models with photography
Interested in integrating your 3D work with the real world? This might help
# 1 03-05-2011 , 06:40 PM
Sircharles's Avatar
Registered User
Join Date: Dec 2010
Location: Uk
Posts: 193

Adding geometry

Hi Im probably going about this the wrong way (Polygon model) - but Id like to add geometry to the top of my coke can to create the bumps you see for hole opening etc.

Is there a way of creating this relief effect?

Thanks
Graham

# 2 03-05-2011 , 08:56 PM
daverave's Avatar
The thin red line
Join Date: Aug 2009
Location: England
Posts: 4,472
For the main hole look up ctbram making holes tutorial on this site, as for the other bumpy surface I think what you need is a bump map and UVs I would google that, if you get stuck drop another line here...........dave




Avatar Challenge Winner 2010
# 3 03-05-2011 , 09:19 PM
Joey81's Avatar
Subscriber
Join Date: Jan 2010
Location: Budapest, Hungary
Posts: 244
Are you modeling this one? user added image
Than you really need a good tutorial. Model out the bigger parts & for the bump jump to ps again user added image

Attached Images
# 4 03-05-2011 , 10:49 PM
bullet1968's Avatar
Lifetime Member
Join Date: Feb 2010
Location: Australia
Posts: 4,255
The can is actually fairly simple joey....cutting the hole isnt easy though...the ringpull keep as seperate geo...you can use geo if you want for the small bumps...but a bump map will suffice. If you arent cutting the actual hole SC then it would be the same as with one. Keep me posted

cheers bullet

P.S I practiced a lot when bored and made can after can after can without mapping...fun and good to get the eye in. I think I got down to less then 5 minutes for a can eventually....just kept doing it as fast as I could. This was the can and the ring pull only...no textures


bullet1968

"A Darkness at Sethanon", a book I aspire to model some of the charcters and scenes
# 5 04-05-2011 , 03:33 AM
priimate's Avatar
Subscriber
Join Date: May 2005
Location: Melbourne, Australia
Posts: 26
Hi Sircharles,

Here's a rough bump map example I did quickly for some of my students a couple of years back, for the top of an aluminium can.

Feel free to use this, or refer to it when making your own. You will need to load this file into the Bump attribute of your Material that is applied to the top of your can.

Hope this helps!

Simon

PS Not sure what your level of proficiency is, but I had my students apply this texture using UV co-ordinates, although you could also use projection mapping if you are more comfortable with that!

Attached Thumbnails

Last edited by priimate; 04-05-2011 at 03:40 AM.
# 6 04-05-2011 , 08:02 AM
Sircharles's Avatar
Registered User
Join Date: Dec 2010
Location: Uk
Posts: 193
Guys this forum is so excellent.

Great community, Im doing a Red bull can and will upload when I've made a few attempts.

Thanks
Graham
(beginner)

# 7 04-05-2011 , 02:53 PM
Sircharles's Avatar
Registered User
Join Date: Dec 2010
Location: Uk
Posts: 193
user added image

Obviously getting serious grain down the side, its a maya material x with anisotropy turned on.
Can't seem to lose the grain though.

# 8 04-05-2011 , 08:57 PM
Sircharles's Avatar
Registered User
Join Date: Dec 2010
Location: Uk
Posts: 193
Im fairly satisfied with the outcome. Its just a personal project, but feel it could be alot better.
Feel free to critique.

user added image
user added image
user added image

# 9 05-05-2011 , 11:27 AM
bullet1968's Avatar
Lifetime Member
Join Date: Feb 2010
Location: Australia
Posts: 4,255
NOt bad mate...not bad....yeh the grain looks a little off...I cant remember but here is a filter you can adjust...Im crook at the mo, will have a look tomorrow, good effort mate


bullet1968

"A Darkness at Sethanon", a book I aspire to model some of the charcters and scenes
# 10 05-05-2011 , 11:56 AM
honestdom's Avatar
The Nurb Herd
Join Date: Oct 2007
Location: London
Posts: 2,381
the grain could be your glossy samples maybe?

# 11 06-05-2011 , 08:14 AM
Sircharles's Avatar
Registered User
Join Date: Dec 2010
Location: Uk
Posts: 193
you - could be right. The render times are like 30 mins each at least so I'll have a look later on. The file placed in the reflections is probably costly or maybe the final gather?
I was thinking of doing it with another method anyway - which would be putting the file in the bump and then faking a blurred reflection. - all this talk, I should talk less do more.

# 12 06-05-2011 , 08:19 AM
bullet1968's Avatar
Lifetime Member
Join Date: Feb 2010
Location: Australia
Posts: 4,255
You also appear to have multiple shadows on the first one mate....whoa! 30 mins...thats a bloody long time....


bullet1968

"A Darkness at Sethanon", a book I aspire to model some of the charcters and scenes
# 13 06-05-2011 , 08:31 AM
Sircharles's Avatar
Registered User
Join Date: Dec 2010
Location: Uk
Posts: 193
should I just have shadows set to one light?
any suggestions for dropping render times?

forgot to say - two spots are set to area / with surface shaders behind them.
final gather is at 300 I think and settings are final gather preview.


Last edited by Sircharles; 06-05-2011 at 08:34 AM.
# 14 06-05-2011 , 09:54 AM
bullet1968's Avatar
Lifetime Member
Join Date: Feb 2010
Location: Australia
Posts: 4,255
Quick answer for shadows is yes.....well for me anyway...there is a way to make them object relevant but I cant remember if that makes a diff..LOL I have lost my notes on Essential Lighting..get it if you can...great tutorial.

2nd one Im not sure of BUT I think there is an FG filter...bump that up a little and see if it makes a difference. As for render times..well again Im green but it depends on how much grunt is allocated from the CPU...I could be wrong. Can you load the file so I can see mate?? Unless one of the guru's can answer....

cheers bullet


bullet1968

"A Darkness at Sethanon", a book I aspire to model some of the charcters and scenes
# 15 07-05-2011 , 02:11 PM
daverave's Avatar
The thin red line
Join Date: Aug 2009
Location: England
Posts: 4,472
Im not a lighting expert but would turn of final gather and use 3 spot lights to start with, one with shadow on. Play about with the setting...........dave




Avatar Challenge Winner 2010
Posting Rules Forum Rules
You may not post new threads | You may not post replies | You may not post attachments | You may not edit your posts | BB code is On | Smilies are On | [IMG] code is On | HTML code is Off

Similar Threads