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From: Erik Huelsmann
Subject: Using a bezier-patch as top of a box
Date: 4 Nov 1998 18:42:07
Message: <wzgSQd1pdrdd-pn2-dqQKvid78fMi@localhost>
I have a bezier-patch (bicubic_patch) which describes the top of a 
'inward-dented' box. Now I want to use the bezier-patch as the top of 
this box. I already succeeded in doing so when the 12 outer points of 
the patch all reside in the same plane. It is then possible to use 
that plane as the top of a hollow box (which has its own top-plane 
removed).

Now the problem: Some of the 12 extreme points (the ones which are at 
the sides of the patch) have been moved a bit "into" the box. They are
still in the side-planes of the box, but not in the top-plane anymore.
Is there a way to bound the box so that it fits the bezier-patch?

Or: Is there another figure I can use which will result in a box with 
the bezier-patch top?

bye, Erik

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From: Nieminen Mika
Subject: Re: Using a bezier-patch as top of a box
Date: 5 Nov 1998 06:00:33
Message: <36418551.0@news.povray.org>
Erik Huelsmann <Eri### [at] Bitsmartcom> wrote:
: Or: Is there another figure I can use which will result in a box with 
: the bezier-patch top?

  Try 5 other bezier patches (one for each side of the box).

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                                                           - Warp. -


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From: Erik Huelsmann
Subject: Re: Using a bezier-patch as top of a box
Date: 6 Nov 1998 04:21:17
Message: <wzgSQd1pdrdd-pn2-Pd4LsiDCq7w4@localhost>
On Thu, 5 Nov 1998 11:00:33, Nieminen Mika <war### [at] assaricctutfi> 
wrote:

> Erik Huelsmann <Eri### [at] Bitsmartcom> wrote:
> : Or: Is there another figure I can use which will result in a box with 
> : the bezier-patch top?
> 
>   Try 5 other bezier patches (one for each side of the box).

Which is a good suggestion and tells me it is a beginners question 
after all! :-)

bye, Erik

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ICQ# 21527656
[Don't mail posts, I will see them here just fine]


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