I am looking for some advice on a realistic rendering of a static bird's feather
notably the kind of feathers used as drawing pens. thanks in advance for any
help. marc
mmuylle nous apporta ses lumieres en ce 2007/11/02 21:04:
> I am looking for some advice on a realistic rendering of a static bird's feather> notably the kind of feathers used as drawing pens. thanks in advance for any> help. marc>
The easy way would be to scan one, or get an image of one. In an image
manipulation programm, set the background as transparent usingan alpha channel.
Use a polygon and map that image on it.
You should also create a bump map from the image and use it as a normal pattern
to give the feather some relief.
Another way would be to use the gray level bump image as a height_field and use
the colour version as pigment.
--
Alain
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Did you know that SATAN is an anagram for SANTA?
From: Charles C
Subject: Re: bird's feather
Date: 2 Nov 2007 23:43:54
Message: <472bfc8a@news.povray.org>
mmuylle wrote:
> I am looking for some advice on a realistic rendering of a static bird's feather> notably the kind of feathers used as drawing pens. thanks in advance for any> help. marc>
Wow. Just the other day I was at work and felt the urge to model just
such a feather. Unfortunately by that evening I'd forgotten about it
and/or was very tired. Anyway I bet it would be somewhat straight
forward to create a mesh version of the finest elements and repeat them
in the appropriate tree/feather shape. A little more complicated if you
want it to blend from fuzzy tufts near the root to the smoother part.
Hmm. You've got me thinking now. :-)
Charles
"mmuylle" <nomail@nomail> wrote:
> I am looking for some advice on a realistic rendering of a static bird's feather> notably the kind of feathers used as drawing pens. thanks in advance for any> help. marc
Here's some information on the feather
http://simple.wikipedia.org/wiki/Feather
I did a Google image search and found several images.
These two images seem to be the same type of feather.
I included them both to show some interesting perspectives.
http://www.btinternet.com/~fireballxl5/objects/general/pics/feather1812.jpg
The first has overall shading and color variations.
If you look closely you can see ribbing on the upper section, almost cylinder
shaped.
I think an image map or texture for the coloring, and a heightfield for the 3d
texture.
These might work when viewed from some distance.
http://www.freeimageslive.com/galleries/backdrops/natural/pics/feathermacro1814.jpg
The second picture shows a macro perspective.
Look at the ribbing on the far left and on each side of the main shaft.
All three areas look quite different. I read something about barbs but quite
understand.
I have the opinion that the ribbing grows out oblong, almost rectangular
and then flattens out further from the main shaft. It also seems to be at an
angle; neither parallel, nor perpendicular to the plane of the shaft.
These are just of one feather. I seem to recall several different feathers used
for quill pens.
Hope this gives you some inspiration.
Leef_me
