POV-Ray : Newsgroups : povray.beta-test : CSG Issues with disc shape. v38 beta 2. : Re: CSG Issues with disc shape. v38 beta 2. Server Time
2 Oct 2025 22:38:00 EDT (-0400)
  Re: CSG Issues with disc shape. v38 beta 2.  
From: Bald Eagle
Date: 24 Sep 2025 15:50:00
Message: <web.68d44aace434b08fe2c47eda25979125@news.povray.org>
William F Pokorny <ano### [at] anonymousorg> wrote:

Nice renders.  These are a great starting point for a debugging toolkit, as well
as what could be some interesting extra documentation.

> Ah, I see the cone is doing something weird where the two radii are
> negative. We should probably just not allow negative radii arguments in
> the parser - for any shape.

What I meant, if you misunderstood, was to have one side be radius r, and the
other side be radius -r, so that it would make a "double-cone".

> Bill P.
>
> Aside 1: Long on my todo list is breaking apart the cylinder and cone
> code. Today it's all munged together making both slower and more complex
> than they need be.

clipka at one time said that the cylinder is just a cone with 2 equal end radii

> Aside 2: clipka fixed something with the cone behavior (my memory
> otherwise fails) in v3.8. I expect v3.7 cone behavior is different in
> some aspect.

It would be great if someone could hunt down the readme for 3.8 to see if that's
mentioned.  Are there any comments in source?

- bw


Post a reply to this message

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