POV-Ray : Newsgroups : povray.binaries.images : poincare disc Server Time: 27 Sep 2020 19:04:45 GMT
  poincare disc (Message 1 to 2 of 2)  
From: Le Forgeron
Subject: poincare disc
Date: 29 Aug 2020 16:18:43
Message: <5f4a7fe3$1@news.povray.org>
To follow the discussion in p.b.programming (Re: An updated povr tarball
for Unix/Linux. f6b1c13e),

first attempt at having a warp to make an hyperbolic projection (the
poincaré disc)

It probably needs more controls as so far: the disc is at origin, unit
radius, in the x-y plane.

I believe it needs:
* to be moveable
* to be sizeable
* to be orientable

And maybe, it needs also to be able to be cut before reaching the
radius. And have a scaling factor between inside & outside. And maybe
also some rotation (along the axis above) ?


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Download 'one.png' (8 KB)

Preview of image 'wr.png'
wr.png

Preview of image 'one.png'
one.png


 

From: Le Forgeron
Subject: Re: poincare disc
Date: 6 Sep 2020 11:43:54
Message: <5f54cb7a$1@news.povray.org>
Le 29/08/2020 à 18:18, Le_Forgeron a écrit :
> To follow the discussion in p.b.programming (Re: An updated povr tarball
> for Unix/Linux. f6b1c13e),
> 
> first attempt at having a warp to make an hyperbolic projection (the
> poincaré disc)
> 
> It probably needs more controls as so far: the disc is at origin, unit
> radius, in the x-y plane.
> 
> I believe it needs:
> * to be moveable
> * to be sizeable
> * to be orientable
> 
> And maybe, it needs also to be able to be cut before reaching the
> radius. And have a scaling factor between inside & outside. And maybe
> also some rotation (along the axis above) ?
> 

I give up on moveable, orientable and rotation: there is already a warp
for that.
I did not find a suitable term to specify a cut before the horizon either.

so it resumes to :

warp{ disc [radius FLOAT] [scale FLOAT] }


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warpdisc.png


 

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