Posted by Mike Wheeler on March 28, 2001 at 10:48:33:
In Reply to: Re: How do I turn off the sun? (for Radiance rendering...) posted by GaryV on March 27, 2001 at 22:19:53:
Radiance uses a 24 hour clock, so if you set the sun to 12 it would be high-noon rather than midnight.
To make a night scene with RenderCity simply set Sunlight Off in the rendering options at the first page.
To do it for Radiance renderings running elsewhere, you need to open the .rad file in a text editor and change the first line. The first line will look something like this:
!gensky 3 21 13 +s -a 40
The 3 is the month, the 21 is the day, the 13 is the hour and the 40 is the latitude. To make a night scene change the 13 to 0. Save the file and then run your Radiance rendering with this new file.
Please let us know whenever you have any further questions.