So people can catch it explicitly.

Python2 binding is working fine. The problem is with python3:

python3 -c'from admesh import Stl; stl = Stl("block.stl")'
Traceback (most recent call last):
File "", line 1, in
File "admesh.pyx", line 21, in admesh.Stl.cinit (admesh.c:1394)
File "admesh.pyx", line 25, in admesh.Stl.open (admesh.c:1466)
TypeError: expected bytes, str found

block.stl is from admesh source tarball

https://github.com/admesh/admesh/blob/master/block.stl

Thanks

This is a question and/or a feature request.

Currently I use python-admesh for loading a mesh from a named file:

admesh.Stl("filename.stl")

Question 1: read from stream

In order to support other input methods (e.g. download via http), I would like to read data from a stream (i.e. something that supports the "read" method):

# fictional code
open_file = open("filename.stl", "rb")
mesh = admesh.Stl()
mesh.read_from(open_file)

Question 2: add facets manually #13

Additionally I would like to export a mesh as an STL file. This mesh consists of facets, that I am using (and processing) inside of my application. Thus I would appreciate something like this:

# fictional code
mesh = admesh.Stl()
for vertices, normal in my_facets:
    mesh.add_facet(vertices, normal)

Both approaches are currently not possible with python-admesh - correct?
Would these operations be within admesh's scope? If yes: do you have suggestions, how to implement these?

Attempting to make a deep copy and modify it

from copy import deepcopy

stl = admesh.Stl('hellskull.stl')
stl_copy = deepcopy(stl)
stl_copy.rotate_z(5)

results in admesh.AdmeshError: STL not opened.

The file is missing -> tests won't run.

There is a problem with compiling the latest version. It fails with the following message:

cythoning admesh.pyx to admesh.c

Error compiling Cython file:
------------------------------------------------------------
...

    def __next__(self):
        if self._iterindex >= len(self):
            raise StopIteration
        self._iterindex += 1
        return self._c_stl_file.facet_start[self._iterindex - 1]
                                          ^
------------------------------------------------------------

admesh.pyx:41:43: Cannot convert 'stl_facet' to Python object

Error compiling Cython file:
------------------------------------------------------------
...

    def facet_stats(self, facet, first):
        """stl_facet_stats"""
        if not self._opened:
            raise AdmeshError('STL not opened')
        stl_facet_stats(&self._c_stl_file, facet, first)
                                               ^
------------------------------------------------------------

admesh.pyx:419:48: Cannot convert Python object to 'stl_facet'
building 'admesh' extension

Hi,

I installed python-admesh 0.98.2 on Mac OS X Yosemite. I tried to get the size and volume of an still file from python but all I get is None
I ran following code in python:

    from admesh import Stl
    stl = Stl('test/block.stl')
    print stl.get_size()
    print stl.calculate_volume()

However I get the stats when I run admesh test/block.stl no problem.
Am I missing something here?

Thanks

See https://travis-ci.org/admesh/python-admesh/builds/80811475

ADMesh stl_file consists of several components including stats and the array of facets. Those are hidden in python-admesh and unreachable from Python.

See logs from https://travis-ci.org/admesh/python-admesh/builds/276825289

Thanks for the bindings, love it !

It seems that the surface area is missing from the ctypedef hence not accessible through the admesh.Stl objects

See: https://github.com/admesh/python-admesh/blob/v0.98.5/_cadmesh.pxd#L43

Should I create a pull request ?

Hi,
i had a problem with installation on my mac. It looks like method get_header from autogen.py doesn't work with clang (it could not find cc1 command).