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I am working on an animation where one large plane is flying through the
air.
When viewing at the plane from different angles, and even when viewing from
the cockpit and other windows, I want a realistic ground surface.
I currently use a plane for this, but was wondering if it would be better to
use a large sphere. The problem with a sphere is that it is difficult (for
me) to position the airplane correctly. While the airplane moves, it would
be necessary to constantly change the camera UP vector.
Is there any experience with this topic out there?
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"jansb000" <jan### [at] wxs nl> wrote in message
news:3b1b5c3e$1@news.povray.org...
>
> When viewing at the plane from different angles, and even when viewing
from
> the cockpit and other windows, I want a realistic ground surface.
> I currently use a plane for this, but was wondering if it would be better
to
> use a large sphere. The problem with a sphere is that it is difficult (for
> me) to position the airplane correctly. While the airplane moves, it would
> be necessary to constantly change the camera UP vector.
One way would be to rotate the sphere beneath the airplane instead.
Rotating the camera will work, just a little trickier if you need it to
turn. Just try this out in animation to test.
#declare Rx=360*clock;
#declare E=1000;
camera {location <0,E,0> look_at <0,E,1> rotate x*Rx}
light_source {<1,10000,1000>,1}
plane {y,-1111 pigment {rgb 1} finish {ambient .2}}
sphere {0,E-10 pigment {checker color rgb 1 color rgb 0 scale 10}
finish {ambient .3}}
Bob H.
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