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eagle300
07-23-2002, 02:56 AM
is it better to model rivots onto a sheet of metal or is it better to just make a bump map of it? if so, how do you go about doing that? i'm trying to make panels on a sub.
tj

Chris
07-23-2002, 03:23 AM
it depends on how close you are going to get as to whether you should model them or not, but for a bump map something along the lines of this would produce a fairly good rivet (done with a circular gradient tool in potatoshop)

eagle300
07-23-2002, 02:12 PM
anyone know of any online tutorials on how to go about making all these little rivots? there's got to be an easy way.

Nemises
07-23-2002, 11:20 PM
There is...the post 2 above outlined it perfectly.

To go into it in more detail step-by-step though:

make a texture for your Subs metal sheet (I assume your sub is made from metal sheets?).

in the Bump-map portion of your Material, create a greyscale texture, and place radial gradients everywhere you want the rivets (pretty much exactly as teh pipcture above).

The renderer will interpret the White areas of the bumpmap to be of a greater height, and thus give the impression of Bumps.

to go a step further (if you dont think the lighting on the bumps will imply the rivets enough), use the bumpmap you created to base your color/diffuse map on, and draw on "rivets" aswell..

That way youll have diffuse/color and lighting interaction on what is essentially a flat plane (thus keeping your poly count down).


Pretty simple.

Yes it will probably take several hours to get right, and this is how it should be..there are no true "quick fix" answers...the program expects you to put in some work too!

sumatra
07-28-2002, 08:24 PM
Just out of curiosity & somewhat of topic but here it is:

does anyone know whats the lightness value, bump and displace consider as zero?

CreatureseEtc
07-30-2002, 03:55 AM
You can fake the rivots with textures or depending of how close your sub is gonna be you're going to have to model them all.

A quick fix would be to put half sphere with as little geometry as possible or else your CPU will want your head on a stick. ;)

Take a look at the crapy render I place with the message.
Left side is geometry - Right side is bump.

Now you decide wish one you prefer.

See ya

eagle300
07-30-2002, 09:10 PM
ahhhh easy enough to decide. thanks for the idea.

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