CompuServe Thread

#reflections on my windo

6 messages in this thread
#165589From: Michael BassierApr 19, 1995 9:17 AM
Hi to all! I`m making a architectural scene in this days and I have a problem (I have a wish and this is my problem <g>) I have a lot of windows in my building and I want to see the real-world environment reflecting on the windows while I fly with my camera around the house. I thought I can use reflection maps to get exact what I want. I use photographs of the environment as reflection maps. But the reflection is a huge blow up of a part of my photograph!!! My photograph shows a few buildings, some trees and a UPS car. My window wall (with the photograph as a reflection map) shows only the car. But in such a great size that I can read the producer of the tires <g>. What can I do to solve the problem? BTW: I don`t want to use RayMan because we have to render a animation of more than 2 minutes and that would take a few days with RayMan… <g>. Michael
#165597From: David J. MarksApr 19, 1995 10:17 AM
>> What can I do to solve the problem? Set your windows to use Flat Mirror Auto Reflection. Map your photograph onto a cylinder surrounding the building. (Be sure to remove the top and bottom of the cylinder and flip the normals to the inside.) – Dave
#165750From: Michael BassierApr 20, 1995 2:15 AM
Hi Dave, thanks for the tip. But doesn`t that pump up my rendering time extreme? Isn`t there an other way? Michael
#165775From: David J. MarksApr 20, 1995 8:37 AM
>> But doesn`t that pump up my rendering time extreme? Automatic Reflections do boost your render time, but you could tell it to calculate the reflection for only the first frame. You could also try to create a custom .CUB for better control of your reflection map. The problem you will run into is that flat surfaces don't work well with reflection maps. As you discovered, they only reflect a small piece of the map. I think a "Flat Mirror" is your best solution. – Dave
#165960From: Michael BassierApr 21, 1995 1:52 AM
Hi Dave, I made several test renderings yesterday and I found out exactly what you said: reflection maps doesn`t work in the way I want. I tried to use my reflection photographs as a texture map but that lost the reality look as soon as I move my camera. Now I`ll try out the flat reflection map (automatic)… Thank you for your help…
#165722From: will taitApr 19, 1995 11:27 PM
Hi, A quick and dirty solution that looks pretty good is to create a semi transparent texture mapped material and map it onto your windows. It renders real fast and actually looks quite good. Will