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ElectricShadow
Inquisitive
South Africa
80 Posts |
 Posted - 06/10/2012 : 09:39:59
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Hi all, I am wanting to create a bump map to give my furniture the texture you can see in this image:
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I know how to go about getting the actual holes... just create a black hole in the white areas. My question is how to get the kind of folds that are seen in the connections between the buttons? |
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jpro
A Fountain of Information
USA
4631 Posts |
Posted - 06/10/2012 : 11:55:44
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the basic map might look like dark dots with lighter gray lines that connect them. The relative depth simulated will depend upon the relative darkness of the grays, with the same gray value appearing to sit at the same depth.
Really, the best way to learn how this is going to work is to try a few variations. Give it a shot, and see what you get.
(For closeups of items like this, the indentations in the cushions are often modeled, but since you are doing whole-house interiors, I would definitely start with bump or normal maps.)
Jean
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tbgriswold
Regularly Educational
USA
1047 Posts |
Posted - 06/11/2012 : 10:55:23
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Making wrinkles is a real challenge. I have been doing it for years as I try to make foil sheets to cover spacecraft models. I am still looking for the ultimate procedural method. SO far an artistic hand and Photoshop is what works best....
Britt |
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jpro
A Fountain of Information
USA
4631 Posts |
Posted - 06/11/2012 : 11:37:10
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I am not entirely convinced that he won't ultimately want to model the tufts. A quick check on Turbosquid shows all the sofas and chairs available for sale have the tufts worked out in geometry.
But I still think this would be a good learning project to explore the relative success of bump vs. normal vs. geometry. Modeled geometry could add a significant polygon count, so it wouldn't be my first choice for a whole house, especially if I were actively involved in learning the whole process.
Jean
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ElectricShadow
Inquisitive
South Africa
80 Posts |
Posted - 06/11/2012 : 12:20:41
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Hmmm, hadn't thought about the modelling aspect, that would seem logical though. It would only be for one lounge sofa and then a dining room chair, so I don't think there would be too much of a polygon issue.
The folds do have a shadow like quality to them which may be helped with the addition of a secular map in which case a little photoshop may be handy...
Thank you, I certainly have some things to try to notch up to the learning experience! Let's see how it goes! :) |
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tbgriswold
Regularly Educational
USA
1047 Posts |
Posted - 06/11/2012 : 13:38:30
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Here is a Normal map representation:
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and the normal map:
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I used the normal on a texture with all other attributes turned off and combined it with a Leather texture under it.
Britt |
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jpro
A Fountain of Information
USA
4631 Posts |
Posted - 06/11/2012 : 14:00:07
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excellent demonstration, Britt. This plus a quick perusal of the offerings on Turbosquid should give him a good sampling of the possibilities.
Did you build this from a grayscale map? could you share that as well?
Jean
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tbgriswold
Regularly Educational
USA
1047 Posts |
Posted - 06/11/2012 : 14:09:37
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Here is the Greyscale image I used to Create the Normal map with the nDo PSD Action Script. I am not 100% satisfied as I would like the Button to be in a deeper narrower hole. I might be able to do it better with more nDo experience.
Combining a Normal with simplified geometry is probably the best way to go.
Britt
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Edited by - tbgriswold on 06/11/2012 14:11:37 |
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jpro
A Fountain of Information
USA
4631 Posts |
Posted - 06/11/2012 : 14:26:42
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I'm guessing the button would appear to be more recessed if it stayed in a darker range. Not sure about that, but with this as a starting point it wouldn't be too difficult to test.
I suspect you are right about the combination approach: best of both worlds.
Jean
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ElectricShadow
Inquisitive
South Africa
80 Posts |
Posted - 06/12/2012 : 03:14:09
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Thanks! Those results are pretty darned good! Never created a normal map before, but the examples there give me a really good viewpoint! I would certainly be looking for a more recessed button, but that is a great starting point!
We should get a few tutorials on Strata University that teach how to create these various elements in addition to the existing ones on the application of the materials. A lot of people may benefit from it :) |
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Topic |
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Creating Button Furniture Bump Maps
