Hello.

Been trying to get a rust texture right and I think that staring at it for
so long has numbed my eyeballs.  Constructive criticism requested, please!

For the record, this is made up of three textures placed into a texture_map,
turbulenced to death and scaled down teeny weeny.

Bye,
Alan.

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Attachments:
Download 'rusty_stickman.jpg' (29 KB)

Preview of image 'rusty_stickman.jpg'

In article <3aede854@news.povray.org>, "Alan Holding" 
<man### [at] lineonenet> wrote:

> Been trying to get a rust texture right and I think that staring at 
> it for so long has numbed my eyeballs.  Constructive criticism 
> requested, please!

It looks like some kind of anodized finish, or rough stone, but not much 
like rust...
Um, what exactly is that thing?

-- 
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Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
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<><

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----- Original Message -----
From: "Chris Huff" <chr### [at] maccom>
Newsgroups: povray.binaries.images
Sent: Monday, April 30, 2001 11:46 PM
Subject: Re: Rust? 28kbu


> It looks like some kind of anodized finish, or rough stone, but not much
> like rust...

Oh?  Erm...  Back to drawing board then.

> Um, what exactly is that thing?

It's a stick man thing that I'm using to teach myself inverse
kinematics/walk cycles, etc.  This one only uses forward kinematics right
now as I've just built him, which was a cinch after constucting my robot.  I
stumbled across this page:

http://www.css.tayloru.edu/instrmat/graphics/hypgraph/animation/walking/lear
ning_to_walk.htm

and it inspired me to have a go at animating walks.  Whether I'll be
successful is another matter.

Bye,
Alan.

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Black & White?

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Rust should be more orangey. I should know, my car's covered in the stuff :(

It's worth looking at some of H.E.Day's source, I recall his "drunkpat"
image from the irtc city round had some nice rust effects.

--
Tek
http://www.evilsuperbrain.com

Alan Holding <man### [at] lineonenet> wrote in message
news:3aede854@news.povray.org...
> Hello.
>
> Been trying to get a rust texture right and I think that staring at it for
> so long has numbed my eyeballs.  Constructive criticism requested, please!
>
> For the record, this is made up of three textures placed into a
texture_map,
> turbulenced to death and scaled down teeny weeny.
>
> Bye,
> Alan.
>
>
>

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I suggest you take a look at some real rust for reference. I have 
plentty of rusty things i could scan in for you if you like.

Did you say "black & white"? ;)

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"Alan Holding" <man### [at] lineonenet> wrote in <3aede854@news.povray.org>:

> Hello.
> 
> Been trying to get a rust texture right and I think that staring at it
> for so long has numbed my eyeballs.  Constructive criticism requested,
> please! 
> 
> For the record, this is made up of three textures placed into a
> texture_map, turbulenced to death and scaled down teeny weeny.

Here's a photo I took last summer of a rusty handrail. Perhaps it's of some 
use as a reference.

Simon

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Attachments:
Download 'P8040018.jpg' (59 KB)

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> Here's a photo I took last summer of a rusty handrail. Perhaps it's of
some
> use as a reference.

or an image \ bump map :))


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odd... I wonder why it looks computer generated.

Simon de Vet wrote:

> "Alan Holding" <man### [at] lineonenet> wrote in <3aede854@news.povray.org>:
> 
> 
>> Hello.
>> 
>> Been trying to get a rust texture right and I think that staring at it
>> for so long has numbed my eyeballs.  Constructive criticism requested,
>> please! 
>> 
>> For the record, this is made up of three textures placed into a
>> texture_map, turbulenced to death and scaled down teeny weeny.
> 
> 
> Here's a photo I took last summer of a rusty handrail. Perhaps it's of some 
> use as a reference.
> 
> Simon
> 
> 
> P8040018.jpg
> 
> Content-Type:
> 
> image/jpeg
> Content-Encoding:
> 
> x-uuencode

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Maybe you could try this as well.
I'm not sure how to link to other messages so I copied this from Ben Pashkes
post


----- Original Message -----
From: "Ben Paschke" <ben### [at] rspcomau>
Newsgroups: povray.binaries.images
Sent: 09 March 2001 01:34 AM
Subject: Re: procedural patina (approx 19kbbu)
..pseudo_code
#declare obj =
object{
file://nice geometry ..
}

#declare dirty_texture{
file://texture for the recessed regions
}

#declare shiny_texture{
file://texture for raised regions
}

file://..and then..

object{
obj file://?-----include the object
   texture{
      proximity{//these are roughly the settings i used
               obj file://?---------reference the same object!!
               .8
               samples 35
               file://sample_weighting ?0,0,0>
               sample_bailout 10
               max_density 1
               type 0
               method 1
               sides 2    file://needs to be 2 sided testing
             }
      texture_map{
      [0 dirty_texture]     file://?------innermost _map location
      [1 shiny_texture]   file://?------outermost _map location
      }
   }
}

Should i not have posted this code here?
Does this make it a bit clearer? The key really is just using the same
object
to reference in the proximity_pattern.
Anyway, pretty simple and general. Give it a go!

Now ijust need to test it with other objects! It wouln't be very useful if
it
just worked on spheres!

benp

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Simon de Vet wrote:
> Here's a photo I took last summer of a rusty handrail.

Uh oh. I was going to send a follow-up to you telling that the borders
of paint and rust look a little plastic and not so realistic. Then I
read the word "photo" :-).

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