Hi Allan - there are some difficulties with that.

The fundamental problem is that AI format does not support full NURBS curves - it only supports what are called "non-rational bezier curves" which are only a subset of what NURBS curves can represent.

In particular, things like circles and arc curves in MoI are what are called "Rational" curves that use the weight mechanism in NURBS to make an exact circle. These kinds of NURBS curves do not directly translate into AI format and so those curves go through a fitting process to refit them with a non-rational curve which can then be exported.

That fitting process happens on the 2D projected curve so that it can generate a proper number of points for the new curve to make it fit well to the 2D output. So when you export from different views, any rational curves will be fit with a different number of points to match it to that particular view.

One thing that would probably help you would be to use the Rebuild command on any arcs or circle curves before exporting - the Rebuild command constructs non-rational curves and so they do not get refitted when exporting to AI format, so doing a Rebuild before hand should probably make the export of different views be more consistent in the generated curve structure. Some info on Rebuild here:
http://moi3d.com/2.0/docs/moi_command_reference10.htm#rebuild


> Also maybe an option for 3d perspective projection,
> to maintain exact number of points, so to say edit points.
> Currently Moi recalculates them according to curvature.

This would probably be pretty weird because trying to artificially constrain the number of points that are used to some fixed value would likely result in curves that were strangely formed and all lumpy and misshapen.

- Michael