t00fri wrote:chris wrote:I'll try generating a version of the Vesta model that uses a cylindrical texture mapping. It shouldn't be too difficult. Hopefully, the cylindrical map is well-aligned with the 3D model (I mention it, because I recall reading somewhere that the map uses a new planetographic coordinate system.)
Thanks! That should be very useful for gaining more experience with this issue.
It will actually require more effort than I'd originally thought. The mesh vertices aren't aligned with respect to any meridian. Thus, it's necessary to split any triangles that cross the 0 degree meridian (or whichever meridian one chooses for the vertical edges of the texture.) It's not incredibly difficult to do, but this complication means that the task requires more than a trivial Python or perl script.