Do boolean under windows about trimesh HOT 7 CLOSED

Hey Shawn, I haven't actually tested booleans on windows, but the interface is using distutils.spawn.find_executable('blender'). I think that if you add blender to your windows PATH (control panel -> system -> advanced settings -> environment variables) it should be able to find it, you can check to see if trimesh.interfaces.blender.exist is True. If 'blender' from a cmd finds it it seems like distutils probably can too.

I'm not sure if the windows version has the same command line options. I'll try verify it works then add it to the appveyor Windows tests at some point.

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Thank you Mike for the quick reply!

I did try to add C:\Program Files\Blender Foundation\Blender to the path and in cmd if I do where blender it showed up; but still, when I try to do boolean, it says:

  File "<ipython-input-5-3a440a9b7264>", line 1, in <module>
    cmesh = trimesh.boolean.union([tmesh, amesh], 'blender')

  File "C:\Anaconda3\envs\py34\lib\site-packages\trimesh\boolean.py", line 36, in union
    result = _engines[engine](meshes, operation='union')

  File "C:\Anaconda3\envs\py34\lib\site-packages\trimesh\interfaces\blender.py", line 14, in boolean
    raise ValueError('No blender available!')

ValueError: No blender available!

I'll dig into the code base a bit later.

Thanks again!

Shawn

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Hey Shawn- amongst other things, I added some additional search paths in 954c9f0, and boolean ops work for me in windows with it.

Best,
Mike

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Hi Mike,

Thank you for your response!

I tried it, and initially it was still not working. I then checked my _search_path in trimesh.interfaces.blender, and it shows

ipdb> _search_path
'C:\\Anaconda3\\envs\\py34\\Library\\bin;C:\\Anaconda3\\envs\\py34\\Library\\bin;C:\\Anaconda3\\envs\\py34;C:\\Anaconda3\\envs\\py34\\Library\\mingw-w64\\bin;C:\\Anaconda3\\envs\\py34\\Library\\usr\\bin;C:\\Anaconda3\\envs\\py34\\Library\\bin;C:\\Anaconda3\\envs\\py34\\Scripts;C:\\Program Files (x86)\\NVIDIA Corporation\\PhysX\\Common;C:\\SIMULIA\\Commands;C:\\Program Files\\Microsoft MPI\\Bin\\;C:\\ProgramData\\Oracle\\Java\\javapath;C:\\WINDOWS\\system32;C:\\WINDOWS;C:\\WINDOWS\\System32\\Wbem;C:\\WINDOWS\\System32\\WindowsPowerShell\\v1.0\\;C:\\Program Files (x86)\\Git\\cmd;C:\\Program Files (x86)\\GitExtensions\\;C:\\Program Files\\MATLAB\\R2016b\\bin;C:\\Program Files (x86)\\Windows Kits\\8.1\\Windows Performance Toolkit\\;C:\\Program Files\\MATLAB\\MATLAB Compiler Runtime\\v82\\runtime\\win64;C:\\SIMULIA\\Abaqus\\Commands;C:\\Program Files\\MATLAB\\R2013b\\bin;C:\\WINDOWS\\system32\\config\\systemprofile\\.dnx\\bin;C:\\Program Files\\Microsoft DNX\\Dnvm\\;C:\\Program Files\\Microsoft SQL Server\\130\\Tools\\Binn\\;C:\\Anaconda3;C:\\Anaconda3\\Scripts;C:\\Anaconda3\\Library\\bin;C:\\cygwin64\\bin;C:\\cygwin64\\lib;C:\\Users\\shwang\\AppData\\Local\\atom\\bin;C:\\Program Files\\Blender Foundation\\BlenderC:\\Program Files\\Blender Foundation\\Blender;C:\\Program Files (x86)\\Blender Foundation\\Blender;'

Notice that it has:

;C:\\Program Files\\Blender Foundation\\BlenderC:\\Program Files\\Blender Foundation\\Blender;

So when appending the search path, it is missing a ';'.

A quick and dirty fix that I did is to change https://github.com/mikedh/trimesh/blob/master/trimesh/interfaces/blender.py#L11

to

    _search_path += ';C:\Program Files\Blender Foundation\Blender;'

This might be dirty... I'd be interested in knowing a neater way :)

By the way - in

Thanks!

Shawn

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Ah my bad, thanks for the find! I fixed the search path issue in 423cca9 and added blender to the windows appveyor tests in 8d11d81, which should yell at me if it breaks again.

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Oh as to the returning a Trimesh object, if you use the mesh.union(other) member function instead of trimesh.boolean.union you'll get a Trimesh object (function in base).

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@mikedh Great! Thank you so much. And thanks for having the split-and-join method - it is nice and clean! :)

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