![]() This could for instance be done in a window like the export windows you use for polygonal export, where the wireframe of the imported file is shown and the user can select edges and assign weights. ![]() So what would be needed is a different way to tell the object/MoI on import what edges should be sharp (or in an ideal world it would be like in Blender a weight per edge between 0.0 and 1.0 for in-between semi-sharpness). This results in each polygon getting it's own rounding instead of meeting in the pointed corner - the open edges work only where two corners meet like in the upper right area:Īnd the same happens if I import that open edge object into MoI: Now to get sharp corners in MoI, those creased edges need to be split: Then gradually the creases become more and more sharp.Īs you can see, the lower frontal corner has three sharp creases come together, so it forms a sharp, pointed corner, basically like in the original cube: At 0.0, which means no creasing, the object would be a sphere. This is a cube in Blender with some of the edges (the pink ones) set to a crease value of 1.0, which is fully sharp. I'm not a big fan of Rhino, but it is getting stuff done, even if clumsy.Īnd thanks Michael for looking into it, but since my job starts next week, I guess I'll have to find other solutions. I'll probably have to bite the bullet and update to Rhino 7, they now have Subdivision Surfaces implemented pretty perfectly. Thanks pafurijaz, your files were quite helpful to check out different options, but in the end, none of them was viable. Again, this creates sub-optimal heavy meshes.įusionNURBSconversion.jpg OpenEdgesNURBSconversionMoI.jpg What also semi-works is to subdivide the mesh with the creases very highly in Blender (like 5 SubD-steps), apply the SubD and import that fine mesh into MoI. ![]() That kinda works, but creates a rather ugly mesh. I also tried the double-edge approach where each edge that needs to be sharp is comprised of two edges that have no distance to each other. I wouldn't mind if I had to do a bit more work, but so far I didn't come up with a solution myself and didn't find anything with the forum search, although I guess it's a common problem. So my question is: has anybody found a workaround or viable technique to get such edges/corners to work? This was an issue in the old importer for v3 already and seems to be exactly the same in v4? The problem is, that open seams in the imported obj work for non-crossing edges very well, I could totally use the result.īut when there are three or more open edges, I get holes. Rhino 7 came out a while ago and it does it perfectly, but I'd rather use MoI if possible and would update to version 4 in an instant for that feature. I did this in the past with Fusion 360s internal T-Splines, but would prefer to avoid Autodesk. I have a project coming up where I will model an object in Blender as Subdivision Surface with sharp creases and then want to convert the result to NURBS for further preparations for injection moulding and adding mechanical detail.
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