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CadQuery / CQ-editor

CadQuery GUI editor based on PyQT
Apache License 2.0
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Segmentation fault when rendering a cadquery script that fillets edges #270

Open alikureishy opened 3 years ago

alikureishy commented 3 years ago

To Reproduce

Here's the cadquery script I am using. Rendering this causes CQ-Editor to segfault.

import cadquery as cq
start_radius = 30
slot_size = 7
slot_inset = 10

length = 100
end_radius = 20

outer = cq.Workplane("XY").circle(start_radius)
lofted = outer.workplane(offset=length).circle(end_radius).loft(combine=True)
channeled = lofted.faces(">Z").rect((2 * end_radius - 3 * slot_inset), (2 * end_radius - 3 * slot_inset), forConstruction=True)\
           .vertices().rect(slot_size, slot_size).cutThruAll()\
            .faces("|Z").edges().fillet(3) # <---- This line causes the segmentation fault

Environment

OS: Macbook 10.15.7

Was CadQuery installed using Conda?: Yes

Output of conda list from your active Conda environment:

# packages in environment at /Users/blah/anaconda3/envs/cad:
#
# Name                    Version                   Build  Channel
alabaster                 0.7.12                     py_0    conda-forge
appdirs                   1.4.4              pyh9f0ad1d_0    conda-forge
applaunchservices         0.2.1                      py_0    conda-forge
appnope                   0.1.2            py38h50d1736_1    conda-forge
argh                      0.26.2          pyh9f0ad1d_1002    conda-forge
astroid                   2.5.6            py38h50d1736_0    conda-forge
async_generator           1.10                       py_0    conda-forge
atomicwrites              1.4.0              pyh9f0ad1d_0    conda-forge
attrs                     21.2.0             pyhd8ed1ab_0    conda-forge
autopep8                  1.5.6              pyhd8ed1ab_0    conda-forge
babel                     2.9.1              pyh44b312d_0    conda-forge
backcall                  0.2.0              pyh9f0ad1d_0    conda-forge
backports                 1.0                        py_2    conda-forge
backports.functools_lru_cache 1.6.4              pyhd8ed1ab_0    conda-forge
black                     21.5b1             pyhd8ed1ab_0    conda-forge
bleach                    3.3.0              pyh44b312d_0    conda-forge
brotlipy                  0.7.0           py38h5406a74_1001    conda-forge
ca-certificates           2021.5.30            h033912b_0    conda-forge
cadquery                  2.1                       py3.8    cadquery
certifi                   2021.5.30        py38h50d1736_0    conda-forge
cffi                      1.14.5           py38ha97d567_0    conda-forge
chardet                   4.0.0            py38h50d1736_1    conda-forge
click                     8.0.1            py38h50d1736_0    conda-forge
cloudpickle               1.6.0                      py_0    conda-forge
colorama                  0.4.4              pyh9f0ad1d_0    conda-forge
cq-editor                 0.2                       py3.8    cadquery
cryptography              3.4.7            py38h1fa4640_0    conda-forge
dataclasses               0.8                pyhc8e2a94_1    conda-forge
dbus                      1.13.16              h18a8e69_0  
decorator                 5.0.9              pyhd8ed1ab_0    conda-forge
defusedxml                0.7.1              pyhd8ed1ab_0    conda-forge
diff-match-patch          20200713           pyh9f0ad1d_0    conda-forge
docutils                  0.17.1           py38h50d1736_0    conda-forge
entrypoints               0.3             pyhd8ed1ab_1003    conda-forge
expat                     2.2.9                h4a8c4bd_2    conda-forge
ezdxf                     0.14.2                     py_0    conda-forge
flake8                    3.8.4                      py_0    conda-forge
fontconfig                2.13.1            h10f422b_1005    conda-forge
freetype                  2.10.4               h4cff582_1    conda-forge
future                    0.18.2           py38h50d1736_3    conda-forge
gettext                   0.19.8.1          h7937167_1005    conda-forge
glib                      2.68.0               hdf23fa2_0  
icu                       58.2              h0a44026_1000    conda-forge
idna                      2.10               pyh9f0ad1d_0    conda-forge
imagesize                 1.2.0                      py_0    conda-forge
importlib-metadata        4.3.1            py38h50d1736_0    conda-forge
importlib_metadata        4.3.1                hd8ed1ab_0    conda-forge
intervaltree              3.0.2                      py_0    conda-forge
ipykernel                 5.5.5            py38h6c79ece_0    conda-forge
ipython                   7.24.0           py38h6c79ece_0    conda-forge
ipython_genutils          0.2.0                      py_1    conda-forge
isort                     5.8.0              pyhd8ed1ab_0    conda-forge
jedi                      0.17.2           py38h50d1736_1    conda-forge
jinja2                    3.0.1              pyhd8ed1ab_0    conda-forge
jpeg                      9d                   hbcb3906_0    conda-forge
jsonschema                3.2.0              pyhd8ed1ab_3    conda-forge
jupyter_client            6.1.12             pyhd8ed1ab_0    conda-forge
jupyter_core              4.7.1            py38h50d1736_0    conda-forge
jupyterlab_pygments       0.1.2              pyh9f0ad1d_0    conda-forge
keyring                   23.0.1           py38h50d1736_0    conda-forge
lazy-object-proxy         1.6.0            py38h96a0964_0    conda-forge
libblas                   3.9.0                8_openblas    conda-forge
libcblas                  3.9.0                8_openblas    conda-forge
libcxx                    10.0.0                        1  
libffi                    3.3                  hb1e8313_2  
libgfortran               4.0.0           7_5_0_h1a10cd1_22    conda-forge
libgfortran4              7.5.0               h1a10cd1_22    conda-forge
libiconv                  1.16                 haf1e3a3_0    conda-forge
liblapack                 3.9.0                8_openblas    conda-forge
libopenblas               0.3.12          openmp_h63d9170_1    conda-forge
libpng                    1.6.37               h7cec526_2    conda-forge
libsodium                 1.0.17               h01d97ff_0    conda-forge
libspatialindex           1.9.3                h4a8c4bd_3    conda-forge
libxml2                   2.9.10               h7cdb67c_3  
llvm-openmp               11.1.0               hda6cdc1_1    conda-forge
logbook                   1.5.3            py38h5406a74_4    conda-forge
markupsafe                2.0.1            py38h96a0964_0    conda-forge
matplotlib-inline         0.1.2              pyhd8ed1ab_2    conda-forge
mccabe                    0.6.1                      py_1    conda-forge
mistune                   0.8.4           py38h5406a74_1003    conda-forge
mypy_extensions           0.4.3            py38h50d1736_3    conda-forge
nbclient                  0.5.3              pyhd8ed1ab_0    conda-forge
nbconvert                 6.0.7            py38h50d1736_3    conda-forge
nbformat                  5.1.3              pyhd8ed1ab_0    conda-forge
ncurses                   6.2                  h0a44026_1  
nest-asyncio              1.5.1              pyhd8ed1ab_0    conda-forge
nptyping                  1.4.2              pyhd8ed1ab_0    conda-forge
numpy                     1.20.3           py38had91d27_1    conda-forge
numpydoc                  1.1.0                      py_1    conda-forge
occt                      7.4.0                hb9b6dc7_3    conda-forge
ocp                       7.4                     1_py3.8    cadquery
openssl                   1.1.1k               h0d85af4_0    conda-forge
packaging                 20.9               pyh44b312d_0    conda-forge
pandoc                    2.13                 h0d85af4_0    conda-forge
pandocfilters             1.4.2                      py_1    conda-forge
parso                     0.7.0              pyh9f0ad1d_0    conda-forge
path                      15.1.2           py38h50d1736_0    conda-forge
path.py                   12.5.0                        0    conda-forge
pathspec                  0.8.1              pyhd3deb0d_0    conda-forge
pcre                      8.44                 h4a8c4bd_0    conda-forge
pexpect                   4.8.0              pyh9f0ad1d_2    conda-forge
pickleshare               0.7.5                   py_1003    conda-forge
pip                       21.1.1           py38hecd8cb5_0  
pluggy                    0.13.1           py38h50d1736_4    conda-forge
prompt-toolkit            3.0.18             pyha770c72_0    conda-forge
psutil                    5.8.0            py38h96a0964_1    conda-forge
ptyprocess                0.7.0              pyhd3deb0d_0    conda-forge
pycodestyle               2.6.0              pyh9f0ad1d_0    conda-forge
pycparser                 2.20               pyh9f0ad1d_2    conda-forge
pydocstyle                6.1.1              pyhd8ed1ab_0    conda-forge
pyflakes                  2.2.0              pyh9f0ad1d_0    conda-forge
pygments                  2.9.0              pyhd8ed1ab_0    conda-forge
pylint                    2.7.2            py38h50d1736_0    conda-forge
pyls-black                0.4.6              pyh9f0ad1d_0    conda-forge
pyls-spyder               0.3.2              pyhd8ed1ab_0    conda-forge
pyopenssl                 20.0.1             pyhd8ed1ab_0    conda-forge
pyparsing                 2.4.7              pyh9f0ad1d_0    conda-forge
pyqt                      5.9.2            py38h655552a_2  
pyqtgraph                 0.11.1             pyhd3deb0d_0    conda-forge
pyrsistent                0.17.3           py38h5406a74_2    conda-forge
pysocks                   1.7.1            py38h50d1736_3    conda-forge
python                    3.8.10               h88f2d9e_7  
python-dateutil           2.8.1                      py_0    conda-forge
python-jsonrpc-server     0.4.0              pyh9f0ad1d_0    conda-forge
python-language-server    0.36.2             pyhd8ed1ab_0    conda-forge
python.app                1.3              py38h5406a74_4    conda-forge
python_abi                3.8                      1_cp38    conda-forge
pytz                      2021.1             pyhd8ed1ab_0    conda-forge
pyyaml                    5.4.1            py38h5406a74_0    conda-forge
pyzmq                     19.0.1           py38h1fcdcd6_0    conda-forge
qdarkstyle                3.0.2              pyhd8ed1ab_0    conda-forge
qt                        5.9.7                h93ee506_2    conda-forge
qtawesome                 1.0.2              pyhd8ed1ab_0    conda-forge
qtconsole                 5.1.0              pyhd8ed1ab_0    conda-forge
qtpy                      1.9.0                      py_0    conda-forge
readline                  8.1                  h9ed2024_0  
regex                     2021.4.4         py38h96a0964_0    conda-forge
requests                  2.25.1             pyhd3deb0d_0    conda-forge
rope                      0.19.0             pyhd8ed1ab_0    conda-forge
rtree                     0.9.7            py38hc59ffc2_1    conda-forge
scipy                     1.4.1            py38h38b60c6_3    conda-forge
setuptools                52.0.0           py38hecd8cb5_0  
sip                       4.19.8           py38h0a44026_0  
six                       1.16.0             pyh6c4a22f_0    conda-forge
snowballstemmer           2.1.0              pyhd8ed1ab_0    conda-forge
sortedcontainers          2.4.0              pyhd8ed1ab_0    conda-forge
sphinx                    4.0.2              pyh6c4a22f_1    conda-forge
sphinxcontrib-applehelp   1.0.2                      py_0    conda-forge
sphinxcontrib-devhelp     1.0.2                      py_0    conda-forge
sphinxcontrib-htmlhelp    2.0.0              pyhd8ed1ab_0    conda-forge
sphinxcontrib-jsmath      1.0.1                      py_0    conda-forge
sphinxcontrib-qthelp      1.0.3                      py_0    conda-forge
sphinxcontrib-serializinghtml 1.1.5              pyhd8ed1ab_0    conda-forge
spyder                    4.2.1            py38h50d1736_3    conda-forge
spyder-kernels            1.10.2           py38h50d1736_0    conda-forge
sqlite                    3.35.4               hce871da_0  
tbb                       2020.3               h879752b_0  
testpath                  0.5.0              pyhd8ed1ab_0    conda-forge
textdistance              4.2.1              pyhd8ed1ab_0    conda-forge
three-merge               0.1.1              pyh9f0ad1d_0    conda-forge
tk                        8.6.10               hb0a8c7a_0  
toml                      0.10.2             pyhd8ed1ab_0    conda-forge
tornado                   6.1              py38h5406a74_1    conda-forge
traitlets                 5.0.5                      py_0    conda-forge
typed-ast                 1.4.3            py38h96a0964_0    conda-forge
typing_extensions         3.7.4.3                    py_0    conda-forge
typish                    1.9.2              pyhd8ed1ab_0    conda-forge
ujson                     3.0.0            py38hc84c608_0    conda-forge
urllib3                   1.26.5             pyhd8ed1ab_0    conda-forge
watchdog                  2.1.2            py38h3c40b66_0    conda-forge
wcwidth                   0.2.5              pyh9f0ad1d_2    conda-forge
webencodings              0.5.1                      py_1    conda-forge
wheel                     0.36.2             pyhd3eb1b0_0  
wrapt                     1.12.1           py38h5406a74_3    conda-forge
wurlitzer                 2.1.0            py38h50d1736_0    conda-forge
xz                        5.2.5                h1de35cc_0  
yaml                      0.2.5                haf1e3a3_0    conda-forge
yapf                      0.31.0             pyhd8ed1ab_0    conda-forge
zeromq                    4.3.2                h6de7cb9_2    conda-forge
zipp                      3.4.1              pyhd8ed1ab_0    conda-forge
zlib                      1.2.11               h1de35cc_3
jmwright commented 3 years ago

The fillet is too large for the square channels and probably causes some sort of self-intersection. The following code runs and produces a renderable result, but if you change the fillet radius to 1.5 you'll get a general command not done error. Using 3 is causing a segfault within the OCCT CAD kernel.

import cadquery as cq
start_radius = 30
slot_size = 7
slot_inset = 10

length = 100
end_radius = 20

outer = cq.Workplane("XY").circle(start_radius)
lofted = outer.workplane(offset=length).circle(end_radius).loft(combine=True)
channeled = lofted.faces(">Z").rect((2 * end_radius - 3 * slot_inset), (2 * end_radius - 3 * slot_inset), forConstruction=True)\
           .vertices().rect(slot_size, slot_size).cutThruAll()\
            .faces("|Z").edges().fillet(1.49)

show_object(channeled)
alikureishy commented 3 years ago

Thanks for the prompt reply! I'll try that out.

For posterity's sake, which repository (github link?) should I log this bug against? Segmentation faults like this, instead of user-friendly parse/compile errors, impact the usability of tools higher up the chain too, such as cadquery and cq-editor.

marcus7070 commented 3 years ago

Logging bugs upstream is more complicated. See https://dev.opencascade.org/doc/overview/html/occt_contribution__contribution_workflow.html#occt_contribution_workflow_issue

You have to reproduce the error in OCCT's Drawexe. I believe you also have to sign an agreement and set up an account.

It would also be worth searching through their bug tracker. I think it's likely there is already a bug for this issue: https://tracker.dev.opencascade.org/view_all_bug_page.php