Hallöchen!
johannes hanika writes:
> [...]
>
> so you want inverse texture mapping? the current thing just
> removes the perspective, essentially giving you an ortho camera
> instead of a perspective one.
I think I found a transformation from orthographic to inverse
texture mapping:
horizontal scaling = x / sqrt(1 + x^2)
with x = y_VP * d/f. So, all trigonometric functions vanish, but
the dependence on d/f remains (otherwise I would have been irritated
anyway). Again, y_VP is the vertical coordinate of the intersection
of the guide lines (i.e. vanishing point), with y_VP = 0 being the
centre of the image and y_VP = 1 being the upper border.
Tschö,
Torsten.
--
Torsten Bronger Jabber ID: [email protected]
or http://bronger-jmp.appspot.com
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