Chris Colefax wrote:
> 
> Ken wrote:
> >
> > In the following bit of code the scene renders as expected when the
> ortographic
> > camera type is commented out. When it is used however the pattern on the z
> axis
> > plane continues uninterrupted on the y axis plane as if the pattern were
> applied
> > to both. Why ?
> 
> The orthographic camera traces rays parallel to the viewing direction, in
> this case +z.  Your floor plane also lies in this direction (and its surface
> is infinitely thin), so none of the camera rays will actually intersect it.
> What you are seeing is the shadow of the floor plane, cast on to your wall -
> the high ambient value of your wall pattern makes it look like a reflection
> of sorts.

That is what I suspected but there is still something not quite right in the
explanation. If it
were a reflection of sort the pattern where it intersects
the y axis plane should be a mirror of the z axis plane. Instead I am seeing
a contiguous pattern emerging that defies the explanation you are giving.
I am sure it has much to do with the parallel rays of the camera type but
I am expecting different results. The wall as you put it is the plane with
the pattern applied to it and the "floor" has a simple white pigment attached
to it with it's own finish statement. Oh well back to the perspective camera :)

-- 
Ken Tyler

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