Ren-Jye Yu (renjye++at++python.tamu.edu)
Mon, 2 Feb 1998 00:02:38 -0600
I have a question on the transition zone of cloud. I am using Performer
2.0. I set the cloud in the following way:
pfESkyAttr(esky, PFES_TZONE_TOP, 3500.0f);
pfESkyAttr(esky, PFES_CLOUD_TOP, 3000.0f);
pfESkyAttr(esky, PFES_CLOUD_BOT, 1000.0f);
pfESkyAttr(esky, PFES_TZONE_BOT, 900.0f);
My question is why the upper transition zone does not work? When my eye
point above the 3000.0, the view suddenly become very clear. I can not see any
transition effect. I do not have any object above 3000.0 expect the earth sky
which is set by pfESkyMode(esky, PFES_BUFFER_CLEAR, PFES_SKY_GRND);. The
transition zone at the bottom of the cloud works fine. How can I make the upper
transition zone work?
Once my eye point below 900.0, the object in the viewing zone suddenly
become very clear. This is not realistic if you fly an airplane out from cloud.
How can I make the view change gradualy?
I will appreciate for you help. Have a nice day.
--______________________________________________________________________________
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