I use rhino7 and rhino8 to export a basic box model, the format is obj, and the options are these: UseRenderMeshes = Yes VertexWelding=Welded NgonMode = None, but I open the obj file with notepad to check and find that the obj exported by rhino8 divides the six faces of the box into 6 objects, but t…

Hi Pan - I do not see this here - can you please post the V7 and V8 files you are starting with, and the exact settings you are using on the Mesh page of the export dialogs. -Pascal

This is a screenshot of the settings for exporting selected objects in Rhino 7 and Rhino 8. My mesh is simple, it is a default box. V7 [rhino7] V8 [rhino8]

@Pan_Chan hi, I saw the message on import_3dm issues tracker. I just tested with a simple box exporting that to OBJ in Rhino 8 using the same settings as you show in your screenshots. This is the box I get with Rhino 8: # Rhino mtllib box_test.mtl g Default o object_1 usemtl diffuse_ControlText v …

In Meshes options ,if you take “Use render meshes”, will export 6 objects!

When I also check Use render meshes I still get only one object: # Rhino mtllib boxtest2.mtl g Default o object_1 usemtl diffuse_ControlText v -1.8417494297027588 0 -6.7309789657592773 v -1.8417494297027588 16.292375564575195 -6.7309789657592773 v -1.8417494297027588 0 7.5834946632385254 v -1.8417…

When I uncheck Use render meshes I get only one object. but when check Use render meshes will get six objects. This is my _SystemInfo report: Rhino 8 SR10 2024-8-13 (Rhino 8, 8.10.24226.13001, Git hash:master @ c36ab43d576d4854b29b091b6b3a38e09decabf5) License type: Commercial, build 2024-08-13…

Although unlikely I would disable both your own plug-in as the keyshot plug-in and see if that changes the results. I am testing with an internal 8.11 build, I don’t know if there have been changes to OBJ export between 8.9 and 8.10, and 8.10 and 8.11 that could affect this issue. @tim do you know …

It shouldn’t be a problem with non-rhino plugins. I have disabled all non-rhino default plugins, but the result is still the same.

Hi chen, I can’t think of any changes in OBJ export that would cause what you’re seeing but your initial report was last November and I honestly can’t remember back that far. I will look at the changelog in the meantime and see if anything stands out. I tried both platforms with “Use render meshe…

Hi Tim, This is my 3dm file, obj.3dm (64.3 KB),just a box and it`s render mesh.

Rhino 8 export. OBJ VertexWelding does not work

Rhino

tim (Tim Hemmelman) August 19, 2024, 4:45pm 14

There’s a new YouTrack issue to track this. https://mcneel.myjetbrains.com/youtrack/issue/RH-83395 I have a fix done for it, just waiting for someone smarter than me to look over the changes I made before I try to merge it.

Tim

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Rhino 8 export. OBJ VertexWelding does not work

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