POV-Ray : Newsgroups : povray.beta-test.binaries : Blob bug/feature: The spiky knee (v. 3.02 to 3.5) : Re: Blob bug/feature: The spiky knee (v. 3.02 to 3.5) Server Time
15 May 2024 13:59:26 EDT (-0400)
  Re: Blob bug/feature: The spiky knee (v. 3.02 to 3.5)  
From: Rune
Date: 28 Nov 2001 14:20:28
Message: <3c0538fc@news.povray.org>
"Greg M. Johnson" wrote:
> If the cylinders have been scaled considerably, one
> ends up with two spikes sticking out of the "knee".

Of course. Cylinder blob components have rounded end caps, like if there
were spheres at the ends. When you scale a cylinder blob component, the end
cap gets scaled too, just like when you scale a sphere.

> Intuitively, the green and red features ought to be the same.

No.

> If they were cylinders, they would be!

You are confusing cylinder objects with cylinder blob components. Cylinder
blob components have rounded end caps (like if there were spheres in the
ends) while cylinder objects don't have that. You can't compare them.

If you want to avoid the problem you're describing, don't scale cylinder
blob components non-proportionally. Instead design them with the correct end
points in the first place, or at least the correct length between the end
points.

Rune
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