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From: Shay
Subject: CSG Challenge
Date: 23 Jul 2013 20:02:02
Message: <51ef197a@news.povray.org>
No blobs, SORs, isos, etc. Just the primitive primitives.

Maybe I'm off my game, but this one took some head-scratching. 559 pieces 
with the bounding and clipping objects.

If you think you've got it figured out, try it. $50 to the POV-Ray wishlist 
(presuming this still exists) if anyone else can get it.

Some nice geology renders since I've been here. Saving my comments for the 
tcrtc.

 -Shay


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From: nemesis
Subject: Re: CSG Challenge
Date: 23 Jul 2013 20:20:01
Message: <web.51ef1cfb3a6d0c04248037650@news.povray.org>
"Shay" <non### [at] nonecom> wrote:
> No blobs, SORs, isos, etc. Just the primitive primitives.
>
> Maybe I'm off my game, but this one took some head-scratching. 559 pieces
> with the bounding and clipping objects.
>
> If you think you've got it figured out, try it. $50 to the POV-Ray wishlist
> (presuming this still exists) if anyone else can get it.
>
> Some nice geology renders since I've been here. Saving my comments for the
> tcrtc.
>
>  -Shay

 you're quite insane

and awesome  too

no clue about those leafy shapes


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From: Thomas de Groot
Subject: Re: CSG Challenge
Date: 24 Jul 2013 08:14:12
Message: <51efc514@news.povray.org>
On 24-7-2013 2:01, Shay wrote:
> No blobs, SORs, isos, etc. Just the primitive primitives.
>
> Maybe I'm off my game, but this one took some head-scratching. 559
> pieces with the bounding and clipping objects.
>
> If you think you've got it figured out, try it. $50 to the POV-Ray
> wishlist (presuming this still exists) if anyone else can get it.

At first sight, that looks quite straightforward ;-) but as you hint, 
there is more to it than a simple construct. The rounded edges for one, 
are an indication...

>
> Some nice geology renders since I've been here. Saving my comments for
> the tcrtc.

Good! Some more images coming I hope. I have not finished yet either...

Thomas


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From: Cousin Ricky
Subject: Re: CSG Challenge
Date: 24 Jul 2013 10:25:01
Message: <web.51efe28f3a6d0c0478641e0c0@news.povray.org>
"Shay" <non### [at] nonecom> wrote:
> If you think you've got it figured out, try it. $50 to the POV-Ray wishlist
> (presuming this still exists) if anyone else can get it.

I can visualize the parts that need to fit together.  The hard part will be the
non-Euclidian math needed to make them match up.


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From: clipka
Subject: Re: CSG Challenge
Date: 24 Jul 2013 11:00:57
Message: <51efec29$1@news.povray.org>
Am 24.07.2013 16:19, schrieb Cousin Ricky:
> "Shay" <non### [at] nonecom> wrote:
>> If you think you've got it figured out, try it. $50 to the POV-Ray wishlist
>> (presuming this still exists) if anyone else can get it.
>
> I can visualize the parts that need to fit together.  The hard part will be the
> non-Euclidian math needed to make them match up.

Indeed!


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From: MichaelJF
Subject: Re: CSG Challenge
Date: 24 Jul 2013 14:00:01
Message: <web.51f0151d3a6d0c047d40b13d0@news.povray.org>
clipka <ano### [at] anonymousorg> wrote:
> Am 24.07.2013 16:19, schrieb Cousin Ricky:
> > "Shay" <non### [at] nonecom> wrote:
> >> If you think you've got it figured out, try it. $50 to the POV-Ray wishlist
> >> (presuming this still exists) if anyone else can get it.
> >
> > I can visualize the parts that need to fit together.  The hard part will be the
> > non-Euclidian math needed to make them match up.
>
> Indeed!

No, no non-Euclidian math is needed here. One can solve the puzzle only with
Euclid and Pythagoras but one has to think in polar coordinates instead of
Euclidian ones and heavily use rotate. I really liked this Little challenge
since I was a Little bit bored looking at Smoking mountains and needed a break.
But unfortunatelly I have not the time to accomplish the full Picture.

Best regards,
Michael


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From: Nekar Xenos
Subject: Re: CSG Challenge
Date: 24 Jul 2013 15:14:54
Message: <op.w0qqe2atufxv4h@xena>
On Wed, 24 Jul 2013 02:01:43 +0200, Shay <non### [at] nonecom> wrote:

> No blobs, SORs, isos, etc. Just the primitive primitives.
>
> Maybe I'm off my game, but this one took some head-scratching. 559 pieces
> with the bounding and clipping objects.
>
> If you think you've got it figured out, try it. $50 to the POV-Ray  
> wishlist
> (presuming this still exists) if anyone else can get it.
>
> Some nice geology renders since I've been here. Saving my comments for  
> the
> tcrtc.
>
>  -Shay

Getting the correct rotation for the tori on the edges of the petals is  
the difficult part. I can imagine how to do it but I'm never sure when and  
how to use vrotate etc.

-- 
-Nekar Xenos-


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From: MichaelJF
Subject: Re: CSG Challenge
Date: 24 Jul 2013 15:15:00
Message: <web.51f026863a6d0c047d40b13d0@news.povray.org>
"MichaelJF" <mi-### [at] t-onlinede> wrote:
> clipka <ano### [at] anonymousorg> wrote:
> > Am 24.07.2013 16:19, schrieb Cousin Ricky:
> > > "Shay" <non### [at] nonecom> wrote:
> > >> If you think you've got it figured out, try it. $50 to the POV-Ray wishlist
> > >> (presuming this still exists) if anyone else can get it.
> > >
> > > I can visualize the parts that need to fit together.  The hard part will be the
> > > non-Euclidian math needed to make them match up.
> >
> > Indeed!
>
> No, no non-Euclidian math is needed here. One can solve the puzzle only with
> Euclid and Pythagoras but one has to think in polar coordinates instead of
> Euclidian ones and heavily use rotate. I really liked this Little challenge
> since I was a Little bit bored looking at Smoking mountains and needed a break.
> But unfortunatelly I have not the time to accomplish the full Picture.
>
> Best regards,
> Michael

To illustrate this a bit. If you add a new slice of the surrounding sphere and
cut out the blue "circles" rotated eight times around the y-axis, fill in
appropriate scaled, cut and transformed tori and finally eight little spheres
you have solved the problem of the upper pikes.

Best regards,
Michael


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From: clipka
Subject: Re: CSG Challenge
Date: 24 Jul 2013 15:41:16
Message: <51f02ddc$1@news.povray.org>
Am 24.07.2013 21:09, schrieb MichaelJF:
> "MichaelJF" <mi-### [at] t-onlinede> wrote:
>> clipka <ano### [at] anonymousorg> wrote:
>>> Am 24.07.2013 16:19, schrieb Cousin Ricky:
>>>> "Shay" <non### [at] nonecom> wrote:
>>>>> If you think you've got it figured out, try it. $50 to the POV-Ray wishlist
>>>>> (presuming this still exists) if anyone else can get it.
>>>>
>>>> I can visualize the parts that need to fit together.  The hard part will be the
>>>> non-Euclidian math needed to make them match up.
>>>
>>> Indeed!
>>
>> No, no non-Euclidian math is needed here. One can solve the puzzle only with
>> Euclid and Pythagoras but one has to think in polar coordinates instead of
>> Euclidian ones and heavily use rotate. I really liked this Little challenge
>> since I was a Little bit bored looking at Smoking mountains and needed a break.
>> But unfortunatelly I have not the time to accomplish the full Picture.
>>
>> Best regards,
>> Michael
>
> To illustrate this a bit. If you add a new slice of the surrounding sphere and
> cut out the blue "circles" rotated eight times around the y-axis, fill in
> appropriate scaled, cut and transformed tori and finally eight little spheres
> you have solved the problem of the upper pikes.

I have no trouble coming up with the necessary CSG; buth the precise 
placement of the elements seems less trivial to me.


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From: MichaelJF
Subject: Re: CSG Challenge
Date: 24 Jul 2013 16:40:01
Message: <web.51f03a9a3a6d0c047d40b13d0@news.povray.org>
clipka <ano### [at] anonymousorg> wrote:
> Am 24.07.2013 21:09, schrieb MichaelJF:
> > "MichaelJF" <mi-### [at] t-onlinede> wrote:
> >> clipka <ano### [at] anonymousorg> wrote:
> >>> Am 24.07.2013 16:19, schrieb Cousin Ricky:
> >>>> "Shay" <non### [at] nonecom> wrote:
> >>>>> If you think you've got it figured out, try it. $50 to the POV-Ray wishlist
> >>>>> (presuming this still exists) if anyone else can get it.
> >>>>
> >>>> I can visualize the parts that need to fit together.  The hard part will be the
> >>>> non-Euclidian math needed to make them match up.
> >>>
> >>> Indeed!
> >>
> >> No, no non-Euclidian math is needed here. One can solve the puzzle only with
> >> Euclid and Pythagoras but one has to think in polar coordinates instead of
> >> Euclidian ones and heavily use rotate. I really liked this Little challenge
> >> since I was a Little bit bored looking at Smoking mountains and needed a break.
> >> But unfortunatelly I have not the time to accomplish the full Picture.
> >>
> >> Best regards,
> >> Michael
> >
> > To illustrate this a bit. If you add a new slice of the surrounding sphere and
> > cut out the blue "circles" rotated eight times around the y-axis, fill in
> > appropriate scaled, cut and transformed tori and finally eight little spheres
> > you have solved the problem of the upper pikes.
>
> I have no trouble coming up with the necessary CSG; buth the precise
> placement of the elements seems less trivial to me.
Certainly it is not trivial, that is why I pointed out all this things.

Beat regards,
Michael


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