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- Normally POV-Ray pans left or right by rotating about the Y axis until it
- lines up with the look_at point and then tilts straight up or down until the
- point is met exactly. However you may want to slant the camera sideways
- like an airplane making a banked turn. You may change the tilt of the ca-
- mera using the 'sky' vector. For example:
- camera {
- location <3, 5, -10>
- sky <1, 1, 0>
- look_at <0 ,2 ,1>
- }
-
- This tells POV-Ray to roll the camera until the top of the camera is in
- line with the sky vector. Imagine that the sky vector is an antenna point-
- ing out of the top of the camera. Then it uses the 'sky' vector as the axis
- of rotation left or right and then to tilt up or down in line with the 'sky'
- vector. In effect you're telling POV-Ray to assume that the sky is not
- straight up.
-
- NOTE: The sky vector must appear before the look_at vector. The sky vec-
- tor does nothing on its own. It only modifies the way the look_at vector
- turns the camera. The default value for sky is <0,1,0>.
-