hello everyone,
Thanks to u�all �the gurus� I have not only started getting better results,
but know better what I am doing. However the sky still completely baffles me,
especially since it is defined so easily even though it is so complex.
Here are the questions:
1. All I do to specify the sun is write the following one line for the sun :
does gensky model the sun as a light material using these definitions?
!gensky 4 11 13:0 +s -a (latitude) -o (longitude) -m (meridian) �B (horizontal
diffuse irradiance) �R (horizontal direct irradiance, can direct normal be
used?)
2. Should skyfunc be defined by me before it is used as a modifier in the sky
definition, or does the skyfunc modifier take the input from the first line
(as above) to modify the glow command? (pg 355 of RWR)
3. Following parameters define the sky and I believe it is modified so as to
give a blue hue etc, but how is it determined as to what it should be for a
specific case?
skyfunc glow skyglow
0
0
4 .986 .986 1.205 0 (these values are modified, sometimes 4 .9 .9 1 0 is used
also for sunny skies)
skyglow source sky
0
0
4 0 0 1 180
4. Similarly while defining the ground, what is the best way to determine what
the ground values for RGB should be � I have been contemplating between using
one of the following case but what should I base the decision on? How do you
judge as to what values should be used for your specific case?
skyfunc glow ground_glow
0
0
4 1 .7 .25 0 (or 4 1 1 1 0 is used, I am guessing, for a uniform glow!)
ground_glow source ground
0
0
4 0 0 -1 180
I would really be grateful if someone could help me with this or guide me to a
specific text material which I may have missed when trying to look for the
answer to the above questions.
Thanks and have a great day!
Amarpreet
Graduate Student
Arizona State University