POV-Ray : Newsgroups : povray.general : Difference object that cant be scaled : Re: Difference object that cant be scaled Server Time
3 Aug 2024 06:16:39 EDT (-0400)
  Re: Difference object that cant be scaled  
From: Phil Cook
Date: 27 Apr 2004 05:14:00
Message: <opr63yj0e0p4ukzs@news.povray.org>
On Mon, 26 Apr 2004 19:28:55 +0200, Thorsten Froehlich <tho### [at] trfde> 
wrote:

> In article <opr62nkrnmp4ukzs@news.povray.org> , Phil Cook
> <phi### [at] nospamdeckingdealscouk>  wrote:
>
>> I've also been caught out by this; the help file states that scale is 
>> used
>> to change the size of an object or texture pattern with a origin sphere
>> example. IMHO an additional non-origin sphere to demonstrate how it also
>> affects the vector location(s) would make this a bit more obvious. The 
>> way
>> scale works makes sense if you stop and think about it, but it's not
>> something you you might stop and think of :)
>
> Well, even if you don't think about it, you should know that there has 
> to be
> some center of scaling.  And once you start thinking about where that 
> center
> could be, you eventually starting thinking about how scaling does work 
> ;-)

Which is how I worked it out, but only after being giving a large nudge in 
the right direction. After that of course it's obvious.*

However by that measure it's obvious that there has to be some common 
point of rotation for objects and that it is obviously the origin so all 
the warnings and notes about how rotation works should be removed from the 
help file :P

--
Phil Cook

*Well at least how it appears to work from the users perspective I don't 
want to get into an argument with Christoph Hormann about how POVRay 
really does it :)

-- 
All thoughts and comments are my own unless otherwise stated and I am 
happy to be proven wrong.


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