try lookAt() of TransformGroup of the view.
all you need is to increase the distance
between the eyepoint and the target point.
-hai
At 03:11 PM 11/20/99 -0000, you wrote:
>I have a view which uses a parallel projection looking into a J3D world. The
>view can either be oriented to be a left, top, or front view into the world.
>I want to allow the user to zoom the view in and out - essentially allowing
>them to see more or less of the world - without changing the actual size of
>the Canvas3D used by the view.
>
>I've tried translating the view platform towards/away from the centre of the
>scene but this has no affect on the amount of the scene which can be seen -
>as you'd expect using a parallel projection (I think). I've also
>experimented with adjusting the view's screen scale using the
>setScreenScale(double scale) method. Although this does zoom in and out in a
>sense, it isn't exactly what I'm looking for.
>
>I've achieved the effect I am looking for in the perspective view by
>adjusting the view platform's distance away from the centre of the scene.
>Any ideas of how to reproduce this effect in a view with a parallel
>projection would be much appreciated.
>
>Cheers
>
>Andy
>
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