[simpits-tech] Rendering question

[Wayne Ledzian]

The difference in horizon pitch is due to the perspective projection of each image.  For a planar projection, these images are correct, and are NOT distorted, provided the screen(s) are at the correct angle and cover the same field of view as the image you're projecting.  The problem comes up when you try to put the two images side-by-side on a single plane.

NThusim doesn't fix this directly.  Take a close look at the videos of similar setups, and pay attention to the seams.  The angular mismatch is still present.  You can massage out some of the distortion, but without a proper spherical grid, it's a real challenge.

In order to get rid of the problem, the source image must be warped to convert the planar projections to spherical or cylindrical projections.  I know of no software that does this natively, although Sol7 ($$$) does have provisions for an additional warp layer to correct the source image.  Again, it's not (yet?)fully native, you still have to define the warp mesh.

I -think- X-plane (V9, anyway) has spherical (closer to fisheye) and cylindrical projection modes (They require a commercial dongle for each machine), which would work with the existing warping software without requiring further image correction.