import .obj file crash

[cribbidaj]

Hello - I'm trying to import an .obj model of a building I purchased from Turbosquid.  I usually have no problem importing .obj either as a model or a prop into A:M.  This specific model crashes A:M consistently at about the 80% mark of import.  Can someone help me?  I'd prefer to have it imported as a .mdl rather than a prop so that I can add bones to the door, etc.  I'm running A:M v.19.0k on a Mac OS 10.11.6

ollivanders_wand_shop_obj.rar

[robcat2075]

Is it an actual crash with a crash message box or does it just appear to freeze?

[cribbidaj]

Hi Robert - it's an actual crash.  consistently.

[robcat2075]

What do i use to unpack a rar in Windows 10?

[cribbidaj]

I use Keka on a Mac to unpack a rar.

[robcat2075]

I'll try if I can find something to unpack it but... it's already 70mb compressed. It's probably going to be insane as an MDL.

If this is a triangle OBJ  the MDL conversion is certain to be awful.

Is it all mechanicals part you need to animate?

[cribbidaj]

Yes.  All mechanicals parts I'd want to animate.  I had a feeling it is too complex a model to import.

BTW - how are you?  Everything and everyone healthy with you?

[robcat2075]

I got it unpacked.

When I try to import it as a prop just to look at it v19,  v18 and v17 crash and disappear.

V16 finished but there are no decals on the object. Is the model supposed to have textures on it?

At least it's quads and not triangles.

I have an import to MDL running right now. I'll see what happens.

1 hour ago, cribbidaj said:

Yes.  All mechanicals parts I'd want to animate.  I had a feeling it is too complex a model to import.

Do this... import the model into some polygon modeler and cut and paste each mechanical part you want to animate into a new OBJ Model.

Is that something you could do?

Quote

BTW - how are you?  Everything and everyone healthy with you?

I am well, thank you.

Having to stay home is not much of a disruption for me.

[cribbidaj]

Glad to hear.

It does have textures applied, but I'm okay with just a default model texture at this point.  I do not have a polygon modeler.  If you're able to get a decent import to MDL I'd love it if you could share it.

[robcat2075]

Wings 3D or Blander are available free for Mac. I haven't tried them but a simple cut and paste should be feasible.

You might look into that and let us know what you find.

[cribbidaj]

I've tried using Blender before - the interface confuses me

[robcat2075]

Right now v16 has the appearance of being stuck at 20% but I'll let it run a while and see if it comes back.

[cribbidaj]

Thanks.  Just let me know.  I've downloaded Blender and created different files from it (3ds, obj, stl) and successfully imported the 3ds and stl files, but the geometry on them is worse than I want and would create a difficult edit.  The obj still crashes when I import as a mdl.  I may just import the 3ds or stl file as a prop and then model using A:M retopology.

[robcat2075]

Separate out the parts you need to animate as separate OBJs. Import  each one as a prop. You can drop them in the chor and constrain each one to an appropriately placed bone and animate as if it was one model.

If you are not sure about how to do this, ask more.

[cribbidaj]

I understand importing segments as separate props and constraining each separately to a bone in the choreography - great idea!  I just don’t know how to separate a model into parts in Blender.  Will have to research that.  If you have an idea about how that’s done I’m all ears.  Thanks so much man!

[robcat2075]

I don't know blender either, but I presume there is some way to select all the vertices of a door, CUT that selection and PASTE it into a new empty model, then SAVE that as an OBJ

[robcat2075]

In the Task Manager A:M looks like it is still working, the CPU and memory usage keep changing...

But in A:M it still looks like its stuck at 20%.

 

 

[yoda64]

Trying to import this model in A:M is time wasting ... , equal as model or prop.

The model is broken , and I mean broken .

It had tons of inside polygons (don't know for what they are good , see the attachment...) , also meshlab says problem with vertices occuring (identical vertices)

If the inside objects are deleted , I think it will be possible to import it .

The decals inside the archive are also space wasting, no references to the decals in the model or material file .   

[robcat2075]

Thanks, @yoda64!

Chris, the prop idea will still work.

If cutting and pasting a door into a new OBJ is complicated, perhaps a work-around is to delete everything BUT the door, and save what is left under a new name... door.OBJ.

[yoda64]

I have added a simplified obj file , which can be imported as prop. Has lost the groups , but blender can't deal with them.

Found also a bug in the obj importer in conjunction with the blender obj export (fixed for the next version), thatswhy the attached file is exported from meshlab . 

modifed_obj.zip

[cribbidaj]

Thank you Steffen!  The prop imported fine!