POV-Ray : Newsgroups : povray.binaries.images : SunShadow - Bright soft shadows : SunShadow - Bright soft shadows Server Time
7 Nov 2024 04:53:24 EST (-0500)
  SunShadow - Bright soft shadows  
From: Renderdog
Date: 17 Oct 2004 00:15:01
Message: <web.4171f15167b731bb59fbb9ef0@news.povray.org>
Hi All,

Using an area light with color values greater than one to
'blow out' the lighting on parts of an image, I noticed
some odd effects from the bright area light, so I produced
a scene file to isolate and examine the effects.

The scene file is posted at povray.text.scene-files and
includes some comments; wondering if my conclusions are
correct that this is normal and simply a result of the
color scaling necessary for colors greater than '1'?

This image shows the soft shadow from a very bright
light source, on a surface that has white and dark gray
colors. The top part of the image was rendered using
a bright white light (<1,1,1>*4).

The bottom part was rendered using a bright yellow light
(<1.00, 0.65, 0.35>*4).

The soft shadows on the dark grey parts appear normal
because no scaling was performed on that part, while the
white parts show a truncated soft shadow (and a color
tinge when lit by a yellow light).

Thanks,
Mark Slone


Post a reply to this message


Attachments:
Download 'sunshadow.jpg' (15 KB)

Preview of image 'sunshadow.jpg'
sunshadow.jpg


 

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