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17 May 2024 22:30:54 EDT (-0400)
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From: Paolo Gibellini
Subject: Re: polygon to circle loft
Date: 11 May 2015 09:54:45
Message: <5550b4a5$1@news.povray.org>
And wrote on 10/05/2015 18.07:
> Here is a similar shape that blend a circle into two circles.
>
There is a lot of potential: this object seems a half body of a cartoon 
character.
;-)
Paolo


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From: And
Subject: Re: polygon to circle loft
Date: 11 May 2015 11:40:02
Message: <web.5550cd06908ae421bad22bea0@news.povray.org>
"LanuHum" <Lan### [at] yandexru> wrote:
> The main thing that up - smooth, and down - flat, or on the contrary
> That the side appeared smoothly from a bottom to top, or on the contrary
Excuse me, I, ... I just can't understand them.
 I guess my English is too bad to realize what these sentences meant...
>
> In the Blender it will be mesh(fictitious, approximately similar), and will be
> exported to Povray as your object.
> For this purpose there will be special entry fields of necessary data.

So, would you like to write a converter that create such shapes and export to
Pov-ray?


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From: And
Subject: Re: polygon to circle loft
Date: 11 May 2015 12:05:01
Message: <web.5550d253908ae421bad22bea0@news.povray.org>
Paolo Gibellini <p.g### [at] gmailcom> wrote:
> And wrote on 10/05/2015 18.07:
> > Here is a similar shape that blend a circle into two circles.
> >
> There is a lot of potential: this object seems a half body of a cartoon
> character.
> ;-)
> Paolo

Well, here is its bottom.


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loft test2 5 4m20s.png


 

From: And
Subject: Re: polygon to circle loft
Date: 11 May 2015 12:30:01
Message: <web.5550d7e7908ae421bad22bea0@news.povray.org>
My polygon to circle blending shape has this (not so good?) property:
If you draw a straight line from one corner point of the polygon to the circle,
it will not fit its edge.


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lofting 1 scale.png


 

From: And
Subject: Re: polygon to circle loft
Date: 11 May 2015 12:35:00
Message: <web.5550d9e0908ae421bad22bea0@news.povray.org>
scaled picture


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From: And
Subject: Re: polygon to circle loft
Date: 11 May 2015 12:45:08
Message: <web.5550db8b908ae421bad22bea0@news.povray.org>
But if you connect the circle to the middle point of one segment of the polygon,
you will get a straight line.


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From: And
Subject: Re: polygon to circle loft
Date: 11 May 2015 12:55:06
Message: <web.5550de9e908ae421bad22bea0@news.povray.org>
Hey, I ever rendered these pictures:


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From: LanuHum
Subject: Re: polygon to circle loft
Date: 11 May 2015 13:35:01
Message: <web.5550e7ca908ae4217a3e03fe0@news.povray.org>
"And" <49341109@ntnu.edu.tw> wrote:
> "LanuHum" <Lan### [at] yandexru> wrote:
> > The main thing that up - smooth, and down - flat, or on the contrary
> > That the side appeared smoothly from a bottom to top, or on the contrary
> Excuse me, I, ... I just can't understand them.
>  I guess my English is too bad to realize what these sentences meant...
> >
> > In the Blender it will be mesh(fictitious, approximately similar), and will be
> > exported to Povray as your object.
> > For this purpose there will be special entry fields of necessary data.
>
> So, would you like to write a converter that create such shapes and export to
> Pov-ray?

Sorry, I don't speak English. I use an online translator.
Well, I will try to explain on another.
Your first example has 6 edges.
How to write a similar polynom for N edges???
The user shouldn't write a formula. :)
The user needs this:


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From: LanuHum
Subject: Re: polygon to circle loft
Date: 11 May 2015 13:50:00
Message: <web.5550eb9e908ae4217a3e03fe0@news.povray.org>
I will specify:


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From: And
Subject: Re: polygon to circle loft
Date: 12 May 2015 02:50:00
Message: <web.5551a203908ae4213f4ed4340@news.povray.org>
"LanuHum" <Lan### [at] yandexru> wrote:
> Sorry, I don't speak English. I use an online translator.
> Well, I will try to explain on another.
> Your first example has 6 edges.
> How to write a similar polynom for N edges???
> The user shouldn't write a formula. :)
> The user needs this:

If you are asking how to do that(shape) in Pov-ray, I have finished the work.
But there is some other detailed problem ...


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