[Fluxus] camera feature

[gabor papp]

hi,

> what there already is for translation? If not, how hard would it be
> to add something like (lock-camera-target (vector n n n)) so that
> wherever the camera is, it's always pointed at that spot or object?
i think this should not be very difficult. as far as i know, lock-camera 
works by getting the global transformation matrix of the object, inverts 
it and multiplies the camera matrix with it.

> 3) Is there a quick way to translate the axis of rotation on a
> primitive so that it does that orbit-effect instead of rotating in
> place?
you can achive this by switching the order of translate and rotate. are 
you thinking about something like this?

(clear)

(define p (build-cube))

(every-frame
     (with-primitive p
         (identity)
         (rotate (vector 0 (* 90 (time)) 0))
         (translate #(3 0 0))))


gabor