POV-Ray : Newsgroups : povray.binaries.images : POVSolar/POVEarth: still problem with adjusting the day/night gradient : Re: POVSolar/POVEarth: still problem with adjusting the day/night gradient Server Time
30 Jul 2024 08:18:04 EDT (-0400)
  Re: POVSolar/POVEarth: still problem with adjusting the day/night gradient  
From: Jörg 'Yadgar' Bleimann
Date: 22 May 2012 10:27:38
Message: <4fbba25a@news.povray.org>
Hi(gh)!

On 21.05.2012 11:37, Tek wrote:
> The problem is here:
> texture {
>      pigment_pattern { // isolate transforms from the day/night maps
>          gradient z
>          scale 2 translate -z // offset to middle of gradient
>          rotate<-bodies[3][4], orb_ang, 0>  // x rotation is applied before y
>      }
>      texture_map {
>          [0.45 T_Earth_Day]
>          [0.45 T_Earth_Night]
>      }
> }

It did not work as expected - the repeated portion of the night side on 
the daylight hemisphere disappeared, but, on the other hand, the 
texture_map is no longer tilted according to Earth's axial tilt! See 
below what I've got instead...

See you in Khyberspace!

Yadgar


Post a reply to this message


Attachments:
Download '2012-05-22 earth, take 82 - view from 45,000 kms.png- view from 45,000 kms.png' (119 KB)

Preview of image '2012-05-22 earth, take 82 - view from 45,000 kms.png- view from 45,000 kms.png'
2012-05-22 earth, take 82 - view from 45,000 kms.png- view from 45,000 kms.png


 

Copyright 2003-2023 Persistence of Vision Raytracer Pty. Ltd.