Slime wrote:
> > > The perspective reference point is the point perspective stuff is based
> > > on. So everything else you said didn't help me at all. :-( Maybe I can
> > > render a few examples tomorrow.
> >
> > Do you mean the vanishing point?
>
> Oh, ok. I looked it up and I see that the perspective reference point is the
> location of the camera.

Good idea to look it up. :-) There are several ways to see
the reference point, but I had to come up with a name.

> It should be possible to use the method I described nonetheless; by skewing
> the direction the camera is looking in, and then translating the camera the
> opposite amount, you will have essentially moved the camera location (the
> perspective reference point) without moving the image plane.

Somehow I feel it is impossible to do this right, but I don't know much
about the matrix. Google isn't very helpful because of another matrix.

Jonathan

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