ValueError: No blender available!

[SeungHunJeon]

When I created the conda environment according to the description, there were two conflict errors regarding 'perlin-numpy' and 'wfc-python'.

Then, I manually annotated two lines in 'environment.yaml' file,

• perlin-numpy==0.0.0
• wfc-python==0.0.0

(I think the wfc is already defined in the terrain-generator project, then I ignore this issue)

and installed perlin-numpy via the following command:
pip install git+https://github.com/pvigier/perlin-numpy

==================================================================================================

Waiting for parallel creation...
Traceback (most recent call last):
File "/home/oem/workspace/terrain-generator/examples/generate_with_wfc.py", line 265, in
create_mesh_from_cfg(
File "/home/oem/workspace/terrain-generator/examples/generate_with_wfc.py", line 81, in create_mesh_from_cfg
tiles, wave, wave_order, wave_names = solve_with_wfc(cfg, shape, initial_tile_name)
File "/home/oem/workspace/terrain-generator/examples/generate_with_wfc.py", line 35, in solve_with_wfc
tiles = create_mesh_pattern(cfg)
File "/home/oem/workspace/terrain-generator/terrain_generator/trimesh_tiles/mesh_parts/create_tiles.py", line 101, in create_mesh_pattern
tiles = ray.get(tiles)
File "/home/oem/anaconda3/envs/wfc/lib/python3.8/site-packages/ray/_private/client_mode_hook.py", line 105, in wrapper
return func(*args, **kwargs)
File "/home/oem/anaconda3/envs/wfc/lib/python3.8/site-packages/ray/private/worker.py", line 2309, in get
raise value.as_instanceof_cause()
ray.exceptions.RayTaskError(ValueError): ray::create_mesh_tile() (pid=245962, ip=143.248.247.74)
File "/home/oem/workspace/terrain-generator/terrain_generator/trimesh_tiles/mesh_parts/create_tiles.py", line 79, in create_mesh_tile
mesh = cached_mesh_gen()
File "/home/oem/workspace/terrain-generator/terrain_generator/utils/utils.py", line 99, in mesh_gen
mesh = mesh_gen_fn(cfg)
File "/home/oem/workspace/terrain-generator/terrain_generator/trimesh_tiles/mesh_parts/basic_parts.py", line 225, in create_platform_mesh
wall_mesh = create_wall_mesh(cfg.wall)
File "/home/oem/workspace/terrain-generator/terrain_generator/trimesh_tiles/mesh_parts/basic_parts.py", line 181, in create_wall_mesh
mesh = merge_meshes(meshes, cfg.minimal_triangles)
File "/home/oem/workspace/terrain-generator/terrain_generator/utils/mesh_utils.py", line 26, in merge_meshes
mesh = trimesh.boolean.union(meshes, engine=engine)
File "/home/oem/anaconda3/envs/wfc/lib/python3.8/site-packages/trimesh/boolean.py", line 44, in union
result = engines[engine](meshes, operation='union', **kwargs)
File "/home/oem/anaconda3/envs/wfc/lib/python3.8/site-packages/trimesh/interfaces/blender.py", line 43, in boolean
raise ValueError('No blender available!')
ValueError: No blender available!
(create_mesh_tile pid=245962) platform_0.0_0.5_1111_f_wall('middle_bottom', 'middle_right') does not exist in cache, creating platform_0.0_0.5_1111_f_wall('middle_bottom', 'middle_right')e35d734d3ea4c0a6ee2a1b9097ee671d.obj ...
(create_mesh_tile pid=245962) stair_0.0_0.5_wall('middle_left', 'middle_right')7 does not exist in cache, creating stair_0.0_0.5_wall('middle_left', 'middle_right')7_96e709b0b7a7afe0a6eaa72e71426861.obj ...
(create_mesh_tile pid=245962) stair_0.0_0.5_wall()8 does not exist in cache, creating stair_0.0_0.5_wall()8_82562b98e1bc4ee96601d19503ba01ff.obj ...
(create_mesh_tile pid=245948) stair_0.0_0.5_wall()3 does not exist in cache, creating stair_0.0_0.5_wall()3_7af4e61deb919ac897b1c760420192ec.obj ...
(create_mesh_tile pid=245948) stair_0.0_0.5_wall()9 does not exist in cache, creating stair_0.0_0.5_wall()9_69c958c09baebfaf3092a32b695d294a.obj ...
(create_mesh_tile pid=245948) stair_0.0_0.5_wall()10 does not exist in cache, creating stair_0.0_0.5_wall()10_bcb15549bca9b007fe246cc7f88a226c.obj ...
(create_mesh_tile pid=245948) stair_0.0_0.5_wall()11 does not exist in cache, creating stair_0.0_0.5_wall()11_6b6538c4c07ff41f8426c64345c827de.obj ...
(create_mesh_tile pid=245952) stair_0.0_0.5_wall()5 does not exist in cache, creating stair_0.0_0.5_wall()5_2ce3ec98aa999a25c9140de017291d40.obj ...
(create_mesh_tile pid=245962) stair_0.0_0.5_wall('up', 'right')12 does not exist in cache, creating stair_0.0_0.5_wall('up', 'right')12_a16aac5f7b26f51597bd16cdfe7bf8db.obj ...
(create_mesh_tile pid=245948) stair_0.0_0.5_wall('middle_left', 'middle_bottom')12 does not exist in cache, creating stair_0.0_0.5_wall('middle_left', 'middle_bottom')12_1d352467ae6382bfaf08b2752952ecea.obj ...
(create_mesh_tile pid=245952) stair_0.0_0.5_wall()12 does not exist in cache, creating stair_0.0_0.5_wall()12_4686c25451d1e48c7625af95521754cd.obj ...
(create_mesh_tile pid=245952) stair_0.0_0.5_wall()13 does not exist in cache, creating stair_0.0_0.5_wall()13_cf1ab0246a68502c82724653409321e0.obj ...
(create_mesh_tile pid=245964) stair_0.0_0.5_wall('middle_left', 'middle_right')3 does not exist in cache, creating stair_0.0_0.5_wall('middle_left', 'middle_right')3_a8f94034aeaa3f331cdbeec4daf0d26f.obj ...
(create_mesh_tile pid=245964) stair_0.0_0.5_wall('middle_left', 'middle_bottom')13 does not exist in cache, creating stair_0.0_0.5_wall('middle_left', 'middle_bottom')13_69657f91659fa50311ce5d06bb6a889a.obj ...
(create_mesh_tile pid=245964) stair_0.0_0.5_wall('up', 'right')13 does not exist in cache, creating stair_0.0_0.5_wall('up', 'right')13_1518a4ad415d37f31374a46c22e58856.obj ...
(create_mesh_tile pid=245970) stair_0.0_0.5_wall('middle_left', 'middle_right')2 does not exist in cache, creating stair_0.0_0.5_wall('middle_left', 'middle_right')2_f7540e5b00d4a92c1d55c43037183c3a.obj ...
(create_mesh_tile pid=245998) stair_0.0_0.5_wall('middle_left', 'middle_right')4 does not exist in cache, creating stair_0.0_0.5_wall('middle_left', 'middle_right')_4_7e6c089c7a422905339084e726bfeac3.obj ...
(create_mesh_tile pid=245969) platform_0.0_0.5_1110 does not exist in cache, creating platform_0.0_0.5_1110_dceb99597353a0166a93213fe486c354.obj ...
(create_mesh_tile pid=245966) door_s_3.0 does not exist in cache, creating door_s_3.0_e6a4c96be98a3a48d317dea367f22cd4.obj ...

Process finished with exit code 1

The example code collapsed with above issues

[LiuYiKai6]

It seems that you haven't installed blender. Run 'sudo apt-get install blender' will solve this problem.
But then I meet another problem.

Traceback (most recent call last):
File "examples/generate_with_wfc.py", line 265, in
create_mesh_from_cfg(
File "examples/generate_with_wfc.py", line 81, in create_mesh_from_cfg
tiles, wave, wave_order, wave_names = solve_with_wfc(cfg, shape, initial_tile_name)
File "examples/generate_with_wfc.py", line 35, in solve_with_wfc
tiles = create_mesh_pattern(cfg)
File "/home/user/project/terrain-generator/terrain_generator/trimesh_tiles/mesh_parts/create_tiles.py", line 101, in create_mesh_pattern
tiles = ray.get(tiles)
File "/home/user/miniconda3/envs/wfc/lib/python3.8/site-packages/ray/_private/client_mode_hook.py", line 105, in wrapper
return func(*args, **kwargs)
File "/home/user/miniconda3/envs/wfc/lib/python3.8/site-packages/ray/_private/worker.py", line 2309, in get
raise value.as_instanceof_cause()
ray.exceptions.RayTaskError(CalledProcessError): ray::create_mesh_tile() (pid=2721959, ip=101.6.64.195)
File "/home/user/project/terrain-generator/terrain_generator/trimesh_tiles/mesh_parts/create_tiles.py", line 79, in create_mesh_tile
mesh = cached_mesh_gen()
File "/home/user/project/terrain-generator/terrain_generator/utils/utils.py", line 99, in mesh_gen
mesh = mesh_gen_fn(cfg)
File "/home/user/project/terrain-generator/terrain_generator/trimesh_tiles/mesh_parts/basic_parts.py", line 229, in create_platform_mesh
mesh = merge_meshes(meshes, cfg.minimal_triangles)
File "/home/user/project/terrain-generator/terrain_generator/utils/mesh_utils.py", line 26, in merge_meshes
mesh = trimesh.boolean.union(meshes, engine=engine)
File "/home/user/miniconda3/envs/wfc/lib/python3.8/site-packages/trimesh/boolean.py", line 44, in union
result = _engines[engine](meshes, operation='union', **kwargs)
File "/home/user/miniconda3/envs/wfc/lib/python3.8/site-packages/trimesh/interfaces/blender.py", line 55, in boolean
result = blend.run(_blender_executable +
File "/home/user/miniconda3/envs/wfc/lib/python3.8/site-packages/trimesh/interfaces/generic.py", line 90, in run
check_call(command_run,
File "/home/user/miniconda3/envs/wfc/lib/python3.8/subprocess.py", line 364, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['/usr/bin/blender', '--background', '--python', '/tmp/tmpb_tegtcd']' died with <Signals.SIGABRT: 6>.

[SeungHunJeon]

It seems that you haven't installed blender. Run 'sudo apt-get install blender' will solve this problem. But then I meet another problem.

Traceback (most recent call last): File "examples/generate_with_wfc.py", line 265, in create_mesh_from_cfg( File "examples/generate_with_wfc.py", line 81, in create_mesh_from_cfg tiles, wave, wave_order, wave_names = solve_with_wfc(cfg, shape, initial_tile_name) File "examples/generate_with_wfc.py", line 35, in solve_with_wfc tiles = create_mesh_pattern(cfg) File "/home/user/project/terrain-generator/terrain_generator/trimesh_tiles/mesh_parts/create_tiles.py", line 101, in create_mesh_pattern tiles = ray.get(tiles) File "/home/user/miniconda3/envs/wfc/lib/python3.8/site-packages/ray/_private/client_mode_hook.py", line 105, in wrapper return func(*args, **kwargs) File "/home/user/miniconda3/envs/wfc/lib/python3.8/site-packages/ray/_private/worker.py", line 2309, in get raise value.as_instanceof_cause() ray.exceptions.RayTaskError(CalledProcessError): ray::create_mesh_tile() (pid=2721959, ip=101.6.64.195) File "/home/user/project/terrain-generator/terrain_generator/trimesh_tiles/mesh_parts/create_tiles.py", line 79, in create_mesh_tile mesh = cached_mesh_gen() File "/home/user/project/terrain-generator/terrain_generator/utils/utils.py", line 99, in mesh_gen mesh = mesh_gen_fn(cfg) File "/home/user/project/terrain-generator/terrain_generator/trimesh_tiles/mesh_parts/basic_parts.py", line 229, in create_platform_mesh mesh = merge_meshes(meshes, cfg.minimal_triangles) File "/home/user/project/terrain-generator/terrain_generator/utils/mesh_utils.py", line 26, in merge_meshes mesh = trimesh.boolean.union(meshes, engine=engine) File "/home/user/miniconda3/envs/wfc/lib/python3.8/site-packages/trimesh/boolean.py", line 44, in union result = _engines[engine](meshes, operation='union', **kwargs) File "/home/user/miniconda3/envs/wfc/lib/python3.8/site-packages/trimesh/interfaces/blender.py", line 55, in boolean result = blend.run(_blender_executable + File "/home/user/miniconda3/envs/wfc/lib/python3.8/site-packages/trimesh/interfaces/generic.py", line 90, in run check_call(command_run, File "/home/user/miniconda3/envs/wfc/lib/python3.8/subprocess.py", line 364, in check_call raise CalledProcessError(retcode, cmd) subprocess.CalledProcessError: Command '['/usr/bin/blender', '--background', '--python', '/tmp/tmpb_tegtcd']' died with <Signals.SIGABRT: 6>.

Thanks! I resolved the previous issue.

I also encountered the identical error message.

[mktk1117]

Thanks for the report! It seems like the blender is failing to merge some meshes. Could you try setting the minimal_triangle param to false to check if it works?

[LiuYiKai6]

Thanks for the report! It seems like the blender is failing to merge some meshes. Could you try setting the minimal_triangle param to false to check if it works?

Yes! I've tried to do that before and the code works. So I think it's something wrong with blender. But I can't figure out why up to now.