In NumPy 2, NumPy index and vertex arrays are all zeros #401
Description
Describe the issue
In Numpy 2, NumPy index and vertex arrays are all zeros.
To Reproduce
Run the following Python code:
from tinyobjloader import ObjReader, ObjReaderConfig
reader = ObjReader()
config = ObjReaderConfig()
config.triangulate = False
reader.ParseFromString(mesh_string, "", config)Load the following mesh:
v 0 0 0
v 0 0 0
v 0 0 0
v 0 0 0
f 1 2 3 4
v 46.367584 82.676086 8.867414
v 46.524185 82.81955 8.825487
v 46.59864 83.086678 8.88121
v 46.461926 82.834091 8.953863
f 5 6 7 8
Expected behavior
Observed:
(Pdb) [x.vertex_index for x in reader.GetShapes()[0].mesh.indices]
[0, 1, 2, 3, 4, 5, 6, 7]
(Pdb) reader.GetShapes()[0].mesh.numpy_indices()
array([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0], dtype=int32)
Expected:
(Pdb) reader.GetShapes()[0].mesh.numpy_indices()
array([ 0, -1, -1, 1, -1, -1, 2, -1, -1, 3, -1, -1, 4, -1, -1, 5, -1,
-1, 6, -1, -1, 7, -1, -1], dtype=int32)
Observed:
(Pdb) reader.GetAttrib().vertices
[0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 46.367583999999994, 82.67608599999998, 8.867414000000002, 46.524185, 82.81955, 8.825487000000003, 46.59864, 83.08667799999999, 8.88121, 46.461926, 82.834091, 8.953863]
(Pdb) reader.GetAttrib().numpy_vertices()
array([0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
0., 0., 0., 0., 0., 0., 0.])
Expected:
(Pdb) reader.GetAttrib().numpy_vertices()
array([ 0. , 0. , 0. , 0. , 0. , 0. ,
0. , 0. , 0. , 0. , 0. , 0. ,
46.367584, 82.676086, 8.867414, 46.524185, 82.81955 , 8.825487,
46.59864 , 83.086678, 8.88121 , 46.461926, 82.834091, 8.953863])
A clear and concise description of what you expected to happen.
Environment
- TinyObjLoader 2.0.0rc12
- OS: Mac or Linux
- Compiler Wheels from PyPI
- Other environment Python 3.11 or 3.12, NumPy 2.4.2