POV-Ray : Newsgroups : povray.binaries.images : Brushed Metal Table again - brushed-metal-blur-2.png (1/1) : Brushed Metal Table again - brushed-metal-blur-2.png (1/1) Server Time
4 Nov 2024 20:12:26 EST (-0500)
  Brushed Metal Table again - brushed-metal-blur-2.png (1/1)  
From: Edouard Poor
Date: 22 Mar 2008 15:30:51
Message: <news.povray.org-AB5CC1.09303823032008@news.povray.org>
Another crack at the brushed metal table look.

Changes this time:

I've made the table colour darker, and very slightly blue-tinged. Looks 
more "metal" to me now.

I've layered a wrinkles pattern on top of everything to give the table a 
less purely flat appearance. Looking at it here it almost looks like 
I've put too much in, but real surfaces tend to have a fair amount of 
flex in them, so maybe it's OK.

A bit I was pretty happy with: I've layered two patterns on top of each 
other, and made the scratch highlights in the second one reflect more 
light in order to make the scratches show up more. But this only happens 
if there is a bright reflection falling on them - otherwise they fade 
back into the normal surface. It feels more like how scratches catch the 
light in reality to me.

This one is rendered with radiosity.

Technique:

The blur is a simple average of 20 textures with a gradient z pattern 
(with a 1% random variation).

The scratch pattern is simply crackles stretched about 60 times in the x 
axis.

Two scratch patterns are layered on top of each other in a texture map, 
with the one with the highlights only showing through in the top 7% of 
the map. It is identical to the other pattern, but has a higher 
reflectivity.

As I said above, wrinkles is used in a normal_map in each blurred 
pattern to give the surface some large-scale flex.

And that's about it.


Any improvements you think can be made?

Cheers,
Edouard.


Post a reply to this message


Attachments:
Download 'brushed-metal-blur-2.png.jpg' (134 KB)

Preview of image 'brushed-metal-blur-2.png.jpg'
brushed-metal-blur-2.png.jpg


 

Copyright 2003-2023 Persistence of Vision Raytracer Pty. Ltd.