metabolize-forks / lace

DEPRECATED

metabolace

This is an active fork of lace, the Body Labs-developed polygonal mesh library.

The fork's goals are ambitious:

• Keep the library working in current versions of Python and other tools.
• Make bug fixes.
• Provide API stability and backward compatibility with the upstream version.
• Expand functionality to fully support quad meshes, and additional analysis and manipulation functionality where appropriate.
• Respond to community contributions.

Installation

Install dependencies

Mac OS:

brew update && brew install boost
pip install numpy==1.13.1
pip install lace

Linux:

apt-get install -y --no-install-recommends libsuitesparse-dev libboost-dev
pip install numpy==1.13.1
pip install lace

Docker:

docker build .

Install the library

pip install metabolace

And import it just like the upstream library:

from lace.mesh import Mesh

Development

pip install -r requirements_dev.txt
pip install -e .
rake test
rake lint

Contribute

• Issue Tracker: https://github.com/metabolize/lace/issues
• Source Code: https://github.com/metabolize/lace

Pull requests welcome!

Support

If you are having issues, please let us know.

Acknowledgements

This library was refactored from legacy code at Body Labs by Alex Weiss, with portions by Eric Rachlin, Paul Melnikow, Victor Alvarez, and others. It was extracted from the Body Labs codebase and open-sourced by Guillaume Marceau.

License

The project is licensed under the two-clause BSD license.

This project uses the RPly library to read and write PLY files, by Diego Nehab, IMPA, distributed under the MIT License.

• http://www.impa.br/~diego/software/rply

lace's Issues

Topology tests failing with TypeError: 'numpy.float64' object cannot be interpreted as an index

Three topology tests are failing in master:

======================================================================
ERROR: test_faces_per_edge (lace.test_topology.TestTopologyMixin)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/circleci/repo/lace/test_topology.py", line 278, in test_faces_per_edge
    self.assertEqual(len(cube.faces_per_edge), len(self.edges_the_hard_way(cube.f)))
  File "/home/circleci/repo/venv/lib/python2.7/site-packages/cached_property.py", line 35, in __get__
    value = obj.__dict__[self.func.__name__] = self.func(obj)
  File "/home/circleci/repo/lace/topology.py", line 463, in faces_per_edge
    f2v = sp.csc_matrix((data, (IS, JS)), shape=(len(self.f), np.max(self.f.ravel())+1))
  File "/home/circleci/repo/venv/lib/python2.7/site-packages/scipy/sparse/compressed.py", line 51, in __init__
    other = self.__class__(coo_matrix(arg1, shape=shape))
  File "/home/circleci/repo/venv/lib/python2.7/site-packages/scipy/sparse/coo.py", line 154, in __init__
    self._shape = check_shape((M, N))
  File "/home/circleci/repo/venv/lib/python2.7/site-packages/scipy/sparse/sputils.py", line 281, in check_shape
    new_shape = tuple(operator.index(arg) for arg in args)
  File "/home/circleci/repo/venv/lib/python2.7/site-packages/scipy/sparse/sputils.py", line 281, in <genexpr>
    new_shape = tuple(operator.index(arg) for arg in args)
TypeError: 'numpy.float64' object cannot be interpreted as an index

======================================================================
ERROR: test_vertices_per_edge (lace.test_topology.TestTopologyMixin)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/circleci/repo/lace/test_topology.py", line 295, in test_vertices_per_edge
    self.assertEqual(len(cube.vertices_per_edge), len(self.edges_the_hard_way(cube.f)))
  File "/home/circleci/repo/venv/lib/python2.7/site-packages/cached_property.py", line 35, in __get__
    value = obj.__dict__[self.func.__name__] = self.func(obj)
  File "/home/circleci/repo/lace/topology.py", line 476, in vertices_per_edge
    return np.asarray([vertices_in_common(e[0], e[1]) for e in self.f[self.faces_per_edge]])
  File "/home/circleci/repo/venv/lib/python2.7/site-packages/cached_property.py", line 35, in __get__
    value = obj.__dict__[self.func.__name__] = self.func(obj)
  File "/home/circleci/repo/lace/topology.py", line 463, in faces_per_edge
    f2v = sp.csc_matrix((data, (IS, JS)), shape=(len(self.f), np.max(self.f.ravel())+1))
  File "/home/circleci/repo/venv/lib/python2.7/site-packages/scipy/sparse/compressed.py", line 51, in __init__
    other = self.__class__(coo_matrix(arg1, shape=shape))
  File "/home/circleci/repo/venv/lib/python2.7/site-packages/scipy/sparse/coo.py", line 154, in __init__
    self._shape = check_shape((M, N))
  File "/home/circleci/repo/venv/lib/python2.7/site-packages/scipy/sparse/sputils.py", line 281, in check_shape
    new_shape = tuple(operator.index(arg) for arg in args)
  File "/home/circleci/repo/venv/lib/python2.7/site-packages/scipy/sparse/sputils.py", line 281, in <genexpr>
    new_shape = tuple(operator.index(arg) for arg in args)
TypeError: 'numpy.float64' object cannot be interpreted as an index

======================================================================
ERROR: test_vertices_to_edges_matrix (lace.test_topology.TestTopologyMixin)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/circleci/repo/lace/test_topology.py", line 308, in test_vertices_to_edges_matrix
    calculated_edges = cube.vertices_to_edges_matrix.dot(cube.v.ravel()).reshape((-1, 3))
  File "/home/circleci/repo/venv/lib/python2.7/site-packages/cached_property.py", line 35, in __get__
    value = obj.__dict__[self.func.__name__] = self.func(obj)
  File "/home/circleci/repo/lace/topology.py", line 507, in vertices_to_edges_matrix
    return self.get_vertices_to_edges_matrix(want_xyz=True)
  File "/home/circleci/repo/lace/topology.py", line 490, in get_vertices_to_edges_matrix
    vpe = np.asarray(self.vertices_per_edge, dtype=np.int32)
  File "/home/circleci/repo/venv/lib/python2.7/site-packages/cached_property.py", line 35, in __get__
    value = obj.__dict__[self.func.__name__] = self.func(obj)
  File "/home/circleci/repo/lace/topology.py", line 476, in vertices_per_edge
    return np.asarray([vertices_in_common(e[0], e[1]) for e in self.f[self.faces_per_edge]])
  File "/home/circleci/repo/venv/lib/python2.7/site-packages/cached_property.py", line 35, in __get__
    value = obj.__dict__[self.func.__name__] = self.func(obj)
  File "/home/circleci/repo/lace/topology.py", line 463, in faces_per_edge
    f2v = sp.csc_matrix((data, (IS, JS)), shape=(len(self.f), np.max(self.f.ravel())+1))
  File "/home/circleci/repo/venv/lib/python2.7/site-packages/scipy/sparse/compressed.py", line 51, in __init__
    other = self.__class__(coo_matrix(arg1, shape=shape))
  File "/home/circleci/repo/venv/lib/python2.7/site-packages/scipy/sparse/coo.py", line 154, in __init__
    self._shape = check_shape((M, N))
  File "/home/circleci/repo/venv/lib/python2.7/site-packages/scipy/sparse/sputils.py", line 281, in check_shape
    new_shape = tuple(operator.index(arg) for arg in args)
  File "/home/circleci/repo/venv/lib/python2.7/site-packages/scipy/sparse/sputils.py", line 281, in <genexpr>
    new_shape = tuple(operator.index(arg) for arg in args)
TypeError: 'numpy.float64' object cannot be interpreted as an index