Re: position, lookat, and up -> PerspectiveCamera

Jan Hardenbergh (jch@nell.oki.com)
Wed, 11 Oct 95 10:02:00 E

>> I've tried this too, and it doesn't seem to work either.
>> It takes at least 2 rotations to completely align a camera,
>> and there are plenty of options for which to use. I esalise that it's too
>> late to change, but I would have liked to see "at" and "up" fields in the
>> camera node. It is not so hard for browsers to deal with this.

I had thought that, too. However, I now believe it is possible to generate
enough information from the 4 numbers. The SFRotation is similar to
a quaternion.

If anyone has a simple algorithm for taking the LookAt parameters
and generating the SFRotation, please post.

-Jan

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