>I'm using primitive in a different sense than you are.  There
>are five CSG operations, counting inverse, but only three of
>them are primitive operations (as the term is used in Forth
>programming) The other two can be expressed in terms of the
>three primitives, and one actually is expressed that way in
>the source.

I know that difference is actually the intersection with the inverse.

Am I on the right track with merge ?

merge {
 object1
 object2
}

==

union {
 intersection {
   object1
   object2 inverse
  }
  intersection {
    object2
    object1 inverse
  }
}

Gail
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>  I will have to take your word on this as I have only the current docs on
>my present system. I *thought* it migrated into its present form mostly
>unchanged, though, save for halo/media and any additional features over
>v3.0.


I've also only got the current docs now. That was my impression first time
I read the 3.1 docs. I read the section on radiosity yesterday. I'm fairly
sure
that the 3.0 docs had more than two pages on radiosity.

>  Ken and I also like to be able to do this. I use the Adobe Acrobat
version
>of the docs. I am able read the entire document from beginning to end (if I
>wish) and it retains all section numbers and demo images. The entire
>document can be searched for specific keywords and phrases, also, something
>that might be difficult to accomplish in some of the other formats.
>

Is the pdf for 3.1 at www.povray.org ? If not where?

Gail
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On Thu, 17 Jun 1999 08:48:42 +0200, "Gail Shaw" <gsh### [at] monotixcoza> wrote:

>Is the pdf for 3.1 at www.povray.org ? If not where?

  Yes, you can find it at:

http://www.povray.org/ftp/pub/povray/Official/Docs/povuser.pdf

-- 
Alan
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On Thu, 17 Jun 1999 08:40:24 +0200, Gail Shaw wrote:
>
>>I'm using primitive in a different sense than you are.  There
>>are five CSG operations, counting inverse, but only three of
>>them are primitive operations (as the term is used in Forth
>>programming) The other two can be expressed in terms of the
>>three primitives, and one actually is expressed that way in
>>the source.
>
>I know that difference is actually the intersection with the inverse.
>
>Am I on the right track with merge ?

I think yours is an exclusive-or.  Here's what I came up with:

intersection {
  object {foo inverse}
  object {bar inverse}
  inverse
}

On the plus side, you get the points for wondering how it was done,
whether or not you actually got it. :)

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Alan Kong wrote:
> 
> On Tue, 15 Jun 1999 08:38:35 +0200, "Gail Shaw" <gsh### [at] monotixcoza> wrote:
> 
> >Is there anyone else who thinks the 3.0 docs were better than
> >the 3.1 docs?
> 
>   Hi, Gail, Ken, and Marc. Where do the v3.0 docs do better compared with
> the v3.1 docs? Is this the docs in general or a specific format (.html,
> .pdf, Word, etc.)?
> 
> --

Sorry for not answering that fast I have been busy the last days.
I would copy what Ken and Gail have said. What I have to add is that I
found the language declaration at the language description more
irritating than helping. I printed out both manuals and when I started
to do the 3.1 stuff I first tried to do it with these declarations at
the beginning of each section and really disliked them. They way the
language has been presented in the 3.0 docs I personally found much
easier (and that only a matter of the format).


All the Best,

Marc
-- 
Marc Schimmler

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What about the one that says you only use PNG format or the one that says you
always use the alpha channel?  I hardly ever 'always' do something in POV.  I
use colors.inc as a time saver, but by no means need to do so.

Then there was the one about making a patch for POV-Ray.  I made that one
patch a few months ago with changes to fix the problems with radiosity.
Later there were bug fixes made in those areas in the official version, but
I'm sure they handled it different, but I did point out the areas where the
problem lie.  Does that count?  Do I care?  I dunno, maybe.

Perhaps I'm just a casual user with hardcore tendencies. :)

-Mike

Ken wrote:

> Margus Ramst wrote:
> >
> > Hmm, I'm suddenly up to 30. Thanks for the right questions, Ron :)
> >
> > Margus
>
>  I just retried the test and now score 27 (maybe 29 with doubt)
>
>   I think question 62 is invalid by reason of it's wording. Csg's are not
> primitives and are regarded as operations.
>
> --
> Ken Tyler
>
> mailto://tylereng@pacbell.net

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On Thu, 17 Jun 1999 16:57:28 +0200, Marc Schimmler
<sch### [at] icauni-stuttgartde> wrote:

>I printed out both manuals and when I started
>to do the 3.1 stuff I first tried to do it with these declarations at
>the beginning of each section and really disliked them. They way the
>language has been presented in the 3.0 docs I personally found much
>easier...

  I can't remember what the differences are. I will check some CD-ROMs for
the v3.0 docs as I don't have them on my system any longer. If you can
recall offhand without having to turn it into a research project what are
some sections from the older doc that I can compare with v3.1 version
(dependent on whether I can find the older version laying around)?

> ...(and that only a matter of the format).

  Do you mean the doc's file format (.html, .pdf, Word, Windows Help) or
something else? I just want to make sure I'm on the same wavelength as
everyone else <s>.

-- 
Alan
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--------------------------------------------------------------------

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Lewis wrote:
>er....hehe - i got 7
>heheheh
>;)

Me too...

I've got a lot of "I think I know it but I'm not 100% sure so it doesn't
count" :-)

Greetings,

Rune S. Johansen

---
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Alan Kong wrote:
> 
> 
>   I can't remember what the differences are. I will check some CD-ROMs for
> the v3.0 docs as I don't have them on my system any longer. If you can
> recall offhand without having to turn it into a research project what are
> some sections from the older doc that I can compare with v3.1 version
> (dependent on whether I can find the older version laying around)?
> 

For that I have to be at home where I can give you the sections.


> > ...(and that only a matter of the format).
> 
>   Do you mean the doc's file format (.html, .pdf, Word, Windows Help) or
> something else? I just want to make sure I'm on the same wavelength as
> everyone else <s>.
> 

Not the file format but the style actually. I know that it is typical
for programming language descriptions to describe the syntax in the way
it is done in the 3.1 docs. I tried to use it for a fast reference even
with parts from the 3.0 version I had forgotten (shame on me) but found
them not usable for me. Maybe you could add a small section that
explains how to understand them (or have I overseen such a part ... ?).

All the Best,

Marc
-- 
Marc Schimmler

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On Thu, 17 Jun 1999 10:04:29 -0500, Mike <Ama### [at] aolcom> wrote:

>Then there was the one about making a patch for POV-Ray.  I made that one
>patch a few months ago with changes to fix the problems with radiosity.
>Later there were bug fixes made in those areas in the official version, but
>I'm sure they handled it different, but I did point out the areas where the
>problem lie.  Does that count?  Do I care?  I dunno, maybe.

Does the "hardcore povrayer test" count for much? Should we care? 

I think it makes for some interesting trivia, but shouldn't be thought
of as some sort of important judgement on any POV-User's worth or
merit as an artist, craftsman, or human being.

Later,
Glen Berry

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