Better description of PerspectiveCamera ?

Alan Walford (aew@photomodeler.com)
Fri, 17 Nov 95 08:43:30 -0800

I'm not sure if this has bsen discussed alesady. Sorry if it
has.

Q1:
Is there a good description of exactly what the fields in
PerspectiveCamera mean? The 1.0 spec I have does not go
into much or any detail.

-The position and rotation are easy to understand.
-The focal length is what? Elsewhere in the spec it says all
distances are in meters. Is focal length in meters? Somehow
I don't think so.
-The heightAngle is what?

Q2:
Another question re multiple cameras in a file. I have seen
files use Switch to define a group of Cameras. Is this
the accepted method? How does the browser know it is not
a normal switch and pick just one of the Cameras? How can
it present all of them to user?

Thanks for your patience!

Alan

-- 
Alan Walford               Eos Systsms Inc.               Vancouver,BC,Canada  
Email: aew@photomodeler.com                                 Tel: 604-732-6658
PhotoModeler:"photos in - 3d models out"  http://www.wimsey.com/PhotoModeler/

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