POV-Ray : Newsgroups : povray.general : Conic Blob Componants Server Time
13 Aug 2024 19:29:37 EDT (-0400)
  Conic Blob Componants (Message 1 to 3 of 3)  
From: Brian Westfall
Subject: Conic Blob Componants
Date: 21 Jul 1998 03:50:00
Message: <35b43a18.0@news.povray.org>
Hey everyone,
  One thing that Pov-ray doesn't seem to support is conic bloc componants
(would be similar to the cylinder blob componants but the radius changes
from one end to the next).

I've been working on an include file that can be used, but I was wondering
if anyone had any ideas besides defining a series of spheres and adjusting
their strenghts and sizes manually.

Thank you for you help.
Brian Westfall
bwe### [at] emailsjsuedu


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From: Dan Connelly
Subject: wishlist : matrix2
Date: 21 Jul 1998 08:01:54
Message: <35B47521.19C37433@flash.net>
Many enhancements could be made to blobs, but another option
might be a second-order version of matrix... it would 
require 4^2 * 3 = 48 components, and would allow transformations
of the type 

x -> (1 - ay ) x
z -> (1 - ay ) z

... among many others.

The normal calculations of thus-transformed objects may
be a bit tricky, however...

Note: applying this to the blob object would be non-trivial
due to the objects fuzzy outer boundary.

Dan

Brian Westfall wrote:

>   One thing that Pov-ray doesn't seem to support is conic bloc componants

-- 
http://www.flash.net/~djconnel/


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From: Ron Parker
Subject: Re: wishlist : matrix2
Date: 21 Jul 1998 10:22:29
Message: <35b49615.0@news.povray.org>
On Tue, 21 Jul 1998 06:01:53 -0500, Dan Connelly <djc### [at] flashnet> wrote:
>Many enhancements could be made to blobs, but another option
>might be a second-order version of matrix... it would 
>require 4^2 * 3 = 48 components, and would allow transformations
>of the type 
>
>x -> (1 - ay ) x
>z -> (1 - ay ) z
>
>... among many others.
>
>The normal calculations of thus-transformed objects may
>be a bit tricky, however...

The transformation itself would be tricky, never mind the normals.  See 
povray.programming, where this topic has been discussed in detail in the past
few weeks.


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