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20 hours ago •
CadQuery
CadQuery
Sweep along spline fails with numerical dependency
While sweeping a spline I discovered strange numerical dependencies as illustrated in this example:
from cadquery import Vector, Edge, Wire, Solid
arc_width = 701.0
x_offset = 2 * arc_width + 1
spline_start = Vector(x_offset, 0.0, 0.0)
spline_end = Vector(x_offset, arc_width, 0.0)
spline_initial_tangent = Vector(2.0, 0.0, 0.1)
# The following sweep fails if 700.0 > arc_width < 2789.0 and generates the following errors:
# if x_offset > 2*arc_width:
# OCP.Standard.Standard_ConstructionError: gp_Vec::Normalized() - vector has zero norm
# else:
# OCP.StdFail.StdFail_NotDone: BRepOffsetAPI_MakePipeShell::MakeSolid
problematic_spline = Edge.makeSpline(
[spline_start, spline_end],
tangents=(spline_initial_tangent, -spline_initial_tangent),
scale=False,
)
swept_problematic_spline = Solid.sweep(
Wire.makeCircle(
50, problematic_spline.positionAt(0), problematic_spline.tangentAt(0)
),
[],
problematic_spline,
)
if "show_object" in locals():
show_object(swept_problematic_spline, name="swept_problematic_spline")
I'm guessing something strange is happening in OCCT - is there any other explanation that makes sense?
I get the same result with cadquery master of a couple weeks ago and one from the end of last year.
output of conda list:
# packages in environment at /home/roger/anaconda3/envs/cq39:
#
# Name Version Build Channel
_libgcc_mutex 0.1 conda_forge conda-forge
_openmp_mutex 4.5 1_gnu conda-forge
alabaster 0.7.12 py_0 conda-forge
alsa-lib 1.2.3 h516909a_0 conda-forge
argh 0.26.2 pyh9f0ad1d_1002 conda-forge
arrow 1.2.2 pyhd8ed1ab_0 conda-forge
astroid 2.5.8 py39hf3d152e_0 conda-forge
asttokens 2.0.5 pyhd8ed1ab_0 conda-forge
atomicwrites 1.4.0 pyh9f0ad1d_0 conda-forge
attrs 21.4.0 pyhd8ed1ab_0 conda-forge
autopep8 1.6.0 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
beautifulsoup4 4.10.0 pyha770c72_0 conda-forge
binaryornot 0.4.4 py_1 conda-forge
black 22.1.0 pyhd8ed1ab_0 conda-forge
bleach 4.1.0 pyhd8ed1ab_0 conda-forge
brotlipy 0.7.0 py39h3811e60_1003 conda-forge
bzip2 1.0.8 h7f98852_4 conda-forge
c-ares 1.18.1 h7f98852_0 conda-forge
ca-certificates 2021.10.8 ha878542_0 conda-forge
cadquery master py3.9 cadquery
certifi 2021.10.8 py39hf3d152e_1 conda-forge
cffi 1.15.0 py39h4bc2ebd_0 conda-forge
chardet 4.0.0 py39hf3d152e_2 conda-forge
charset-normalizer 2.0.12 pyhd8ed1ab_0 conda-forge
click 8.0.4 py39hf3d152e_0 conda-forge
cloudpickle 2.0.0 pyhd8ed1ab_0 conda-forge
colorama 0.4.4 pyh9f0ad1d_0 conda-forge
cookiecutter 1.7.3 pyh6c4a22f_1 conda-forge
coverage 6.3.2 pypi_0 pypi
cq-editor master py3.9 cadquery
cq-warehouse 0.5.3 dev_0 <develop>
cryptography 36.0.1 py39h95dcef6_0 conda-forge
curl 7.82.0 h7bff187_0 conda-forge
dataclasses 0.8 pyhc8e2a94_3 conda-forge
dbus 1.13.6 h5008d03_3 conda-forge
debugpy 1.5.1 py39he80948d_0 conda-forge
decorator 5.1.1 pyhd8ed1ab_0 conda-forge
defusedxml 0.7.1 pyhd8ed1ab_0 conda-forge
diff-match-patch 20200713 pyh9f0ad1d_0 conda-forge
docutils 0.16 py39hf3d152e_3 conda-forge
double-conversion 3.1.7 h9c3ff4c_0 conda-forge
eigen 3.4.0 h4bd325d_0 conda-forge
entrypoints 0.4 pyhd8ed1ab_0 conda-forge
executing 0.8.3 pyhd8ed1ab_0 conda-forge
expat 2.4.7 h27087fc_0 conda-forge
ezdxf 0.17.2 py39h1a9c180_0 conda-forge
ffmpeg 4.3.2 h37c90e5_3 conda-forge
flake8 3.9.2 pyhd8ed1ab_0 conda-forge
font-ttf-dejavu-sans-mono 2.37 hab24e00_0 conda-forge
font-ttf-inconsolata 3.000 h77eed37_0 conda-forge
font-ttf-source-code-pro 2.038 h77eed37_0 conda-forge
font-ttf-ubuntu 0.83 hab24e00_0 conda-forge
fontconfig 2.13.96 h8e229c2_2 conda-forge
fonts-conda-ecosystem 1 0 conda-forge
fonts-conda-forge 1 0 conda-forge
freeimage 3.18.0 h88c329d_7 conda-forge
freetype 2.10.4 h0708190_1 conda-forge
gettext 0.19.8.1 h73d1719_1008 conda-forge
gl2ps 1.4.2 h0708190_0 conda-forge
glew 2.1.0 h9c3ff4c_2 conda-forge
gmp 6.2.1 h58526e2_0 conda-forge
gnutls 3.6.13 h85f3911_1 conda-forge
gst-plugins-base 1.18.5 hf529b03_3 conda-forge
gstreamer 1.18.5 h9f60fe5_3 conda-forge
hdf4 4.2.15 h10796ff_3 conda-forge
hdf5 1.10.6 nompi_h3c11f04_101 conda-forge
icu 69.1 h9c3ff4c_0 conda-forge
idna 3.3 pyhd8ed1ab_0 conda-forge
ilmbase 2.5.5 h780b84a_0 conda-forge
imagesize 1.3.0 pyhd8ed1ab_0 conda-forge
importlib-metadata 4.11.3 py39hf3d152e_0 conda-forge
importlib_metadata 4.11.3 hd8ed1ab_0 conda-forge
importlib_resources 5.4.0 pyhd8ed1ab_0 conda-forge
inflection 0.5.1 pyh9f0ad1d_0 conda-forge
intervaltree 3.0.2 py_0 conda-forge
ipykernel 6.9.2 py39hef51801_0 conda-forge
ipython 8.1.1 py39hf3d152e_0 conda-forge
ipython_genutils 0.2.0 py_1 conda-forge
isort 5.10.1 pyhd8ed1ab_0 conda-forge
jbig 2.1 h7f98852_2003 conda-forge
jedi 0.18.1 py39hf3d152e_0 conda-forge
jeepney 0.7.1 pyhd8ed1ab_0 conda-forge
jinja2 3.0.3 pyhd8ed1ab_0 conda-forge
jinja2-time 0.2.0 pyhd8ed1ab_3 conda-forge
jpeg 9e h7f98852_0 conda-forge
jsoncpp 1.9.4 h4bd325d_3 conda-forge
jsonschema 4.4.0 pyhd8ed1ab_0 conda-forge
jupyter_client 6.1.12 pyhd8ed1ab_0 conda-forge
jupyter_core 4.9.2 py39hf3d152e_0 conda-forge
jupyterlab_pygments 0.1.2 pyh9f0ad1d_0 conda-forge
jxrlib 1.1 h7f98852_2 conda-forge
keyring 23.4.0 py39hf3d152e_2 conda-forge
keyutils 1.6.1 h166bdaf_0 conda-forge
krb5 1.19.3 h3790be6_0 conda-forge
lame 3.100 h7f98852_1001 conda-forge
lazy-object-proxy 1.7.1 py39h3811e60_0 conda-forge
lcms2 2.12 hddcbb42_0 conda-forge
ld_impl_linux-64 2.36.1 hea4e1c9_2 conda-forge
lerc 3.0 h9c3ff4c_0 conda-forge
libblas 3.9.0 8_openblas conda-forge
libcblas 3.9.0 8_openblas conda-forge
libclang 13.0.1 default_hc23dcda_0 conda-forge
libcurl 7.82.0 h7bff187_0 conda-forge
libdeflate 1.10 h7f98852_0 conda-forge
libedit 3.1.20191231 he28a2e2_2 conda-forge
libev 4.33 h516909a_1 conda-forge
libevent 2.1.10 h9b69904_4 conda-forge
libffi 3.4.2 h7f98852_5 conda-forge
libgcc-ng 11.2.0 h1d223b6_14 conda-forge
libgfortran-ng 7.5.0 h14aa051_20 conda-forge
libgfortran4 7.5.0 h14aa051_20 conda-forge
libglib 2.70.2 h174f98d_4 conda-forge
libglu 9.0.0 he1b5a44_1001 conda-forge
libgomp 11.2.0 h1d223b6_14 conda-forge
libiconv 1.16 h516909a_0 conda-forge
liblapack 3.9.0 8_openblas conda-forge
libllvm13 13.0.1 hf817b99_2 conda-forge
libnetcdf 4.8.0 nompi_hcd642e3_103 conda-forge
libnghttp2 1.47.0 h727a467_0 conda-forge
libnsl 2.0.0 h7f98852_0 conda-forge
libogg 1.3.4 h7f98852_1 conda-forge
libopenblas 0.3.12 pthreads_hb3c22a3_1 conda-forge
libopus 1.3.1 h7f98852_1 conda-forge
libpng 1.6.37 h21135ba_2 conda-forge
libpq 14.2 hd57d9b9_0 conda-forge
libraw 0.20.2 h10796ff_1 conda-forge
libsodium 1.0.18 h36c2ea0_1 conda-forge
libspatialindex 1.9.3 h9c3ff4c_4 conda-forge
libssh2 1.10.0 ha56f1ee_2 conda-forge
libstdcxx-ng 11.2.0 he4da1e4_14 conda-forge
libtheora 1.1.1 h7f98852_1005 conda-forge
libtiff 4.3.0 h542a066_3 conda-forge
libuuid 2.32.1 h7f98852_1000 conda-forge
libvorbis 1.3.7 h9c3ff4c_0 conda-forge
libwebp-base 1.2.2 h7f98852_1 conda-forge
libxcb 1.13 h7f98852_1004 conda-forge
libxkbcommon 1.0.3 he3ba5ed_0 conda-forge
libxml2 2.9.12 h885dcf4_1 conda-forge
libzip 1.8.0 h4de3113_1 conda-forge
libzlib 1.2.11 h36c2ea0_1013 conda-forge
logbook 1.5.3 py39h3811e60_5 conda-forge
loguru 0.5.3 py39hf3d152e_3 conda-forge
lz4-c 1.9.3 h9c3ff4c_1 conda-forge
markupsafe 2.1.0 py39hb9d737c_1 conda-forge
matplotlib-inline 0.1.3 pyhd8ed1ab_0 conda-forge
mccabe 0.6.1 py_1 conda-forge
mistune 0.8.4 py39h3811e60_1005 conda-forge
multimethod 1.6 pyhd8ed1ab_0 conda-forge
mypy_extensions 0.4.3 py39hf3d152e_4 conda-forge
mysql-common 8.0.28 ha770c72_0 conda-forge
mysql-libs 8.0.28 hfa10184_0 conda-forge
nbclient 0.5.13 pyhd8ed1ab_0 conda-forge
nbconvert 6.4.4 py39hf3d152e_0 conda-forge
nbformat 5.2.0 pyhd8ed1ab_0 conda-forge
ncurses 6.3 h9c3ff4c_0 conda-forge
nest-asyncio 1.5.4 pyhd8ed1ab_0 conda-forge
nettle 3.6 he412f7d_0 conda-forge
nlopt 2.7.1 py39h3e08f04_0 conda-forge
nptyping 1.4.4 pyhd8ed1ab_0 conda-forge
nspr 4.32 h9c3ff4c_1 conda-forge
nss 3.74 hb5efdd6_0 conda-forge
numpy 1.22.3 py39h18676bf_0 conda-forge
numpydoc 1.2 pyhd8ed1ab_0 conda-forge
occt 7.5.3 h7391655_0 conda-forge
ocp 7.5.3.0 py39_3 cadquery
openexr 2.5.5 hf817b99_0 conda-forge
openh264 2.1.1 h780b84a_0 conda-forge
openjpeg 2.4.0 hb52868f_1 conda-forge
openssl 1.1.1l h7f98852_0 conda-forge
packaging 21.3 pyhd8ed1ab_0 conda-forge
pandoc 2.17.1.1 ha770c72_0 conda-forge
pandocfilters 1.5.0 pyhd8ed1ab_0 conda-forge
parso 0.8.3 pyhd8ed1ab_0 conda-forge
path 16.4.0 py39hf3d152e_0 conda-forge
pathspec 0.9.0 pyhd8ed1ab_0 conda-forge
pcre 8.45 h9c3ff4c_0 conda-forge
pexpect 4.8.0 pyh9f0ad1d_2 conda-forge
pickleshare 0.7.5 py_1003 conda-forge
pip 22.0.4 pyhd8ed1ab_0 conda-forge
platformdirs 2.5.1 pyhd8ed1ab_0 conda-forge
pluggy 1.0.0 py39hf3d152e_2 conda-forge
poyo 0.5.0 py_0 conda-forge
proj 7.2.0 h277dcde_2 conda-forge
prompt-toolkit 3.0.27 pyha770c72_0 conda-forge
psutil 5.9.0 py39h3811e60_0 conda-forge
pthread-stubs 0.4 h36c2ea0_1001 conda-forge
ptyprocess 0.7.0 pyhd3deb0d_0 conda-forge
pugixml 1.11.4 h9c3ff4c_0 conda-forge
pure_eval 0.2.2 pyhd8ed1ab_0 conda-forge
pycodestyle 2.7.0 pyhd3eb1b0_0
pycparser 2.21 pyhd8ed1ab_0 conda-forge
pydocstyle 6.1.1 pyhd8ed1ab_0 conda-forge
pyflakes 2.3.1 pyhd3eb1b0_0
pygments 2.11.2 pyhd8ed1ab_0 conda-forge
pylint 2.7.2 py39hf3d152e_0 conda-forge
pyls-spyder 0.4.0 pyhd8ed1ab_0 conda-forge
pyopenssl 22.0.0 pyhd8ed1ab_0 conda-forge
pyparsing 3.0.7 pyhd8ed1ab_0 conda-forge
pyqt 5.12.3 py39hf3d152e_8 conda-forge
pyqt-impl 5.12.3 py39hde8b62d_8 conda-forge
pyqt5-sip 4.19.18 py39he80948d_8 conda-forge
pyqtchart 5.12 py39h0fcd23e_8 conda-forge
pyqtgraph 0.12.4 pyhd8ed1ab_0 conda-forge
pyqtwebengine 5.12.1 py39h0fcd23e_8 conda-forge
pyrsistent 0.18.1 py39h3811e60_0 conda-forge
pysocks 1.7.1 py39hf3d152e_4 conda-forge
python 3.9.10 h85951f9_2_cpython conda-forge
python-dateutil 2.8.2 pyhd8ed1ab_0 conda-forge
python-lsp-black 1.1.0 pyhd8ed1ab_0 conda-forge
python-lsp-jsonrpc 1.0.0 pyhd8ed1ab_0 conda-forge
python-lsp-server 1.2.4 pyhd3eb1b0_0
python-slugify 6.1.1 pyhd8ed1ab_0 conda-forge
python_abi 3.9 2_cp39 conda-forge
pytz 2021.3 pyhd8ed1ab_0 conda-forge
pyxdg 0.27 pyhd8ed1ab_0 conda-forge
pyyaml 6.0 py39h3811e60_3 conda-forge
pyzmq 22.3.0 py39h37b5a0c_1 conda-forge
qdarkstyle 3.0.2 pyhd3eb1b0_0
qstylizer 0.2.1 pyhd8ed1ab_0 conda-forge
qt 5.12.9 ha98a1a1_5 conda-forge
qtawesome 1.1.1 pyhd8ed1ab_0 conda-forge
qtconsole 5.2.2 pyhd8ed1ab_1 conda-forge
qtconsole-base 5.2.2 pyhd8ed1ab_1 conda-forge
qtpy 2.0.1 pyhd8ed1ab_0 conda-forge
rapidjson 1.1.0 he1b5a44_1002 conda-forge
readline 8.1 h46c0cb4_0 conda-forge
requests 2.27.1 pyhd8ed1ab_0 conda-forge
rope 0.23.0 pyhd8ed1ab_0 conda-forge
rtree 0.9.7 py39hb102c33_3 conda-forge
secretstorage 3.3.1 py39hf3d152e_1 conda-forge
setuptools 60.9.3 py39hf3d152e_0 conda-forge
six 1.16.0 pyh6c4a22f_0 conda-forge
snowballstemmer 2.2.0 pyhd8ed1ab_0 conda-forge
sortedcontainers 2.4.0 pyhd8ed1ab_0 conda-forge
soupsieve 2.3.1 pyhd8ed1ab_0 conda-forge
sphinx 4.4.0 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_1 conda-forge
spyder 5.1.5 py39h06a4308_1
spyder-kernels 2.1.3 py39h06a4308_0
sqlite 3.37.0 h9cd32fc_0 conda-forge
stack_data 0.2.0 pyhd8ed1ab_0 conda-forge
tbb 2020.2 h4bd325d_4 conda-forge
tbb-devel 2020.2 h4bd325d_4 conda-forge
testpath 0.6.0 pyhd8ed1ab_0 conda-forge
text-unidecode 1.3 py_0 conda-forge
textdistance 4.2.2 pyhd8ed1ab_0 conda-forge
three-merge 0.1.1 pyh9f0ad1d_0 conda-forge
tinycss2 1.1.1 pyhd8ed1ab_0 conda-forge
tk 8.6.12 h27826a3_0 conda-forge
toml 0.10.2 pyhd8ed1ab_0 conda-forge
tomli 2.0.1 pyhd8ed1ab_0 conda-forge
tornado 6.1 py39h3811e60_2 conda-forge
traitlets 5.1.1 pyhd8ed1ab_0 conda-forge
typed-ast 1.5.2 py39h3811e60_0 conda-forge
typing_extensions 4.1.1 pyha770c72_0 conda-forge
typish 1.9.3 pyhd8ed1ab_0 conda-forge
tzdata 2021e he74cb21_0 conda-forge
ujson 5.1.0 py39he80948d_0 conda-forge
unidecode 1.3.4 pyhd8ed1ab_0 conda-forge
urllib3 1.26.8 pyhd8ed1ab_1 conda-forge
utfcpp 3.2.1 ha770c72_0 conda-forge
vtk 9.0.1 no_osmesa_py39h3e52c05_107 conda-forge
watchdog 2.1.6 py39hf3d152e_1 conda-forge
wcwidth 0.2.5 pyh9f0ad1d_2 conda-forge
webencodings 0.5.1 py_1 conda-forge
wheel 0.37.1 pyhd8ed1ab_0 conda-forge
wrapt 1.12.1 py39h3811e60_3 conda-forge
wurlitzer 3.0.2 py39hf3d152e_1 conda-forge
x264 1!161.3030 h7f98852_1 conda-forge
xorg-kbproto 1.0.7 h7f98852_1002 conda-forge
xorg-libice 1.0.10 h7f98852_0 conda-forge
xorg-libsm 1.2.3 hd9c2040_1000 conda-forge
xorg-libx11 1.7.2 h7f98852_0 conda-forge
xorg-libxau 1.0.9 h7f98852_0 conda-forge
xorg-libxdmcp 1.1.3 h7f98852_0 conda-forge
xorg-libxext 1.3.4 h7f98852_1 conda-forge
xorg-libxt 1.2.1 h7f98852_2 conda-forge
xorg-xextproto 7.3.0 h7f98852_1002 conda-forge
xorg-xproto 7.0.31 h7f98852_1007 conda-forge
xz 5.2.5 h516909a_1 conda-forge
yaml 0.2.5 h7f98852_2 conda-forge
yapf 0.32.0 pyhd8ed1ab_0 conda-forge
zeromq 4.3.4 h9c3ff4c_1 conda-forge
zipp 3.7.0 pyhd8ed1ab_1 conda-forge
zlib 1.2.11 h36c2ea0_1013 conda-forge
zstd 1.5.2 ha95c52a_0 conda-forge
I find the sweep is successful when specifying the isFrenet arg as True.
