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Add workaround for GLTF loading

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CURA-6739
This commit is contained in:
Lipu Fei 2019-09-04 14:32:53 +02:00
parent f051c48b9e
commit cadbde7b92
1 changed files with 11 additions and 1 deletions
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12
plugins/TrimeshReader/TrimeshReader.py
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@ -84,7 +84,17 @@ class TrimeshReader(MeshReader):
# types that Trimesh can read. It will not be checked again.
# \return A scene node that contains the file's contents.
def _read(self, file_name: str) -> Union["SceneNode", List["SceneNode"]]:
mesh_or_scene = trimesh.load(file_name)
# CURA-6739
# GLTF files are essentially JSON files. If you directly give a file name to trimesh.load(), it will
# try to figure out the format, but for GLTF, it loads it as a binary file with flags "rb", and the json.load()
# doesn't like it. For some reason, this seems to happen with 3.5.7, but not 3.7.1. Below is a workaround to
# pass a file object that has been opened with "r" instead "rb" to load a GLTF file.
if file_name.endswith(".gltf"):
mesh_or_scene = trimesh.load(open(file_name, "r", encoding="utf-8"),
file_type = file_name.split(".")[-1].lower())
else:
mesh_or_scene = trimesh.load(file_name)
meshes = [] # type: List[Union[trimesh.Trimesh, trimesh.Scene, Any]]
if isinstance(mesh_or_scene, trimesh.Trimesh):
meshes = [mesh_or_scene]