Hi George, I got the same problem when exporting a sphere .3dm from Rhino v3 or v4 as well - I've attached here a sphere .3dm saved from Rhino v4 for you to test with if you want to verify.

So that definitely looks like a bug in HyperShot, possibly some kind of under-tessellation when dealing with certain kinds of surfaces.

I don't know why re-saving an existing file from Rhino v4 solved the problem for you in that particular case, but when I created a sphere from scratch in Rhino v4 as attached I saw the same problem. Really there is not much difference between the general surface data between v3 and v4 .3dm files.

The best way currently to avoid this problem is to export from MoI as .obj format, instead of trying to import .3dm format directly into HyperShot.

And actually that is better to use as a general method anyway, because you have a lot more control over the meshing process that way, and MoI's mesher is actually more reliable. I'd recommend setting the Output: option when exporting from MoI as Output: Quads & Triangles as HyperShot has some problems dealing with more complex n-gons.

- Michael

Hi Paolo and Michael for your answers.

It seems that obj format is the best for rendering with hypershot.

i am only experimenting with this interesting renderer.

Regards,


George

Hi Michael,

If you render sphere from within Rhino 4, with renderer Hypershot, this come fine. But if you open from Hypershot sphere.3dm, the result is a polyhedron, as described before. Probably a Hypershot bug.

Thanks,


George

PS. Works fine with Hypershot plugin for Rhino, inside Rhino 4.

Hi George, I see - when you do the rendering directly inside of Rhino it is using Rhino's mesher instead of HyperShot's mesher, so it avoids the problem which seems to be with HyperShot's meshing mechanism.

One other note - if you do export as .obj from MoI (which is probably the overall best way just make sure to use Output:Quads & Triangles to avoid n-gon processing problems), HyperShot will tend to only apply one material for a whole object and not allow you to apply different materials to different sub-parts of an object.

There is a utility you can get from here:
http://moi3d.com/wiki/Resources#SeparateOBJ_editor

which you can run on an .obj file exported from MoI to add some material flags to the file which will then make it work better for assigning different materials to sub-object parts in HyperShot. At some point in v2 this will get added built in to MoI's regular .obj export.

- Michael

Hi Michael,

Sorry not watching your previews answer. So I edited my previous message, before reading yours.

Thank you again for the immediate response.

Regards,



George