POV-Ray : Newsgroups : povray.programming : Binary Meshes? Server Time: 14 Dec 2018 15:07:56 GMT
  Binary Meshes? (Message 1 to 2 of 2)  
From: Jörg 'Yadgar' Bleimann
Subject: Binary Meshes?
Date: 15 Jun 2015 13:07:19
Message: <557ece07$1@news.povray.org>
Hi(gh)!

Still aiming at POVEarth/POVghanistan (and also high-quality renderings 
of other Solar System bodies) - but currently, there is a bottleneck 
when it comes to generating "spherical" (i. e. following Earth's 
curvature) mesh2s from 16-bit (or whatever format) heightfields!

The Japanese ASTER mission elevation tiles have a resolution of 3601 by 
3601 measuring points (i. e. pixels in a heightfield generated from 
these data) - but even with 16 GiB of RAM, I had to decrease the 
resolution to 2600 by 2600, otherwise POV-Ray would crash.

Of course this is because POV-Ray generates full ASCII code rather than 
(like with heightfields) binary data to internally represent the mesh2 
object.

Have there ever been any attempts to write a patch to make binary meshes 
feasible with POV-Ray?

See you in Khyberspace!

Yadgar


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From: Jörg 'Yadgar' Bleimann
Subject: Re: Binary Meshes?
Date: 15 Jun 2015 13:08:40
Message: <557ece58$1@news.povray.org>
Hi(gh)!

On 15.06.2015 10:26, Le_Forgeron wrote:
 > I lack half the full deck, maybe more:
 >
 > What are you trying to achieve ?
 >
 > Why is heightfield not suitable for that purpose ?

My "heightfield" needs to follow Earth's curvature, so it has to be a 
mesh2! See also here: https://www.youtube.com/watch?v=R5pCZdj_VGM

See you in Khyberspace!

Yadgar


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