Hi all, I used MOI D for a couple years and this time the preview gones wrong, how to fix it? thank.

Hi SalomonD, that looks like probably a rough angle set for the display mesh.

Take a look under Options > View > Meshing parameters > "Mesh angle". If that is set to a rough angle value it will make a rough mesh. The default is 10 degrees, if you set "Mesh angle" to 10 and also check "Add detail to inflections" does that solve it?

- Michael

Hi Michael, thank for your help,trouble solved. So the Mesh Angle is the kind of Polygon Subpath level indication then?

Hi SalomonD, yes for the shaded surface display surfaces are converted to triangles for rendering on the graphics card. The "Mesh Angle" setting is the maximum angle allowed between surface normals at polygon vertices. If the surface normals are wider apart than Mesh angle number of degrees then it subdivides it more until it is less than that.

If it's a larger angle it will result in the kind of display you show above but that can also help reduce display draw time on heavy models.

In the future I want to change how this works to be handled more automatically, like start with a rough angle and then do a higher density one in the background but that is fairly complicated to set up well.

- Michael