POV-Ray : Newsgroups : povray.animations : Progress of shadows due to sunlight : Re: Progress of shadows due to sunlight Server Time: 6 Sep 2008 18:12:13 GMT
  Re: Progress of shadows due to sunlight  
From: Stephen
Date: 12 Jun 2007 11:20:01
"JLH" <phyjlh [at] physicsuoguelphca> wrote:
> I am new to Povray and have been making progress with architectural models.
> I would now like to animate the motion of the shadows of the buildings as
> the day progresses. I thought it might be achieved by somehow advancing the
> time in the "sunpos" command but I can't for the life of me figure out how
> to do it. Could anyone out there help this 75 year old student with this
> problem?
> JLH

If you don’t want great accuracy all you need to do is rotate your sun
(light source) around the y axis for direction and the x or z axis for
altitude. Remember to create your sun at the origin and translate it to the
desired starting point before animating it.
You animate by using the clock variable.
Help file
2.3.8 Making Animations
2.3.8.1 The Clock Variable: Key To It All

There are other methods but to start with, this is the easiest IMO.
I’ve been deliberately vague in case you want to work it out for yourself
but if you want more detailed help with an example please post again.

BTW Welcome.



Stephen


Post a reply to this message

Copyright 2003-2008 Persistence of Vision Raytracer Pty. Ltd.