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jimy-byerley / pymadcad

Simple yet powerful CAD (Computer Aided Design) library, written with Python.
https://madcad.netlify.app/
GNU Lesser General Public License v3.0
208 stars 16 forks source link

Create a new mesh #49

Closed Eva-xx closed 1 year ago

Eva-xx commented 1 year ago

Your work is quite useful and convenient for my research. But I have a trouble now, because of some unknown problem I can only install v0.10.2 at most. If I have a set of n*3 numpy arrays, how can I easily convert them to the format required by faces so that I can construct a mesh by myself?

jimy-byerley commented 1 year ago

Thanks you :)

installing pymadcad v0.13

I would strongly recommend you to fix that installation problem, as bugfixes and new features will come on the top of newer versions. the next version after 0.10.2 was 0.11 that brough arrex in madcad and changed the way points and faces are represented in memory. Since then, it is much easier and efficient to convert from-to numpy arrays.

In pymadcad>=0.11 you can use typedlist_to_numpy and numpy_to_typedlist to make conversions:

# from numpy
# depending on the numpy implementation and the CPU type, this could be no-copy
points = np.zeros((n,3), np.float64)
faces = np.zeros((n,3), np.uint32)

m = Mesh(
    points=numpy_to_typedlist(points, vec3),
    faces=numpy_to_typedlist(faces, uvec3),
    tracks=numpy_to_typedlist(tracks, 'I'),    # you may not need this as you may not have surface groups infos from your source ?
    groups=?  # groups is expected to be a python list, put what you want in
    )

# to numpy
# depending on the numpy implementation and the CPU type, this could be no-copy
m = Mesh(...)

points = typedlist_to_numpy(m.points, np.float64)
faces = typedlist_to_numpy(m.faces, np.uint32)
tracks = typedlist_to_numpy(m.tracks, np.uint32)  # you way not need to extract tracks since most 3D computing libraries do not have this notion
# no point in converting groups to numpy since most groups are `None` or `dict` instances

How did you tried to install upper versions of pymadcad ? Can you copy-paste here the result of pip install pymadcad>=0.13 please ?

converting mesh from-to numpy arrays in pymadcad v0.10

It depends on the version of pyglm you have. With old versions of pyglm there was few issues with the conversion from numpy to vectors.

Assuming you have pyglm>=2.5.7 (the latest), you can use the function glm.array as intermediate step. But this leads to a lot of copies:

# from numpy
points = np.zeros((n,3), np.float64)
faces = np.zeros((n,3), np.uint32)

m = Mesh(
    points=[vec3(p)    for p in points],
    faces=[tuple(f)     for f in faces],
    tracks=list(tracks),   # you may not need this as you may not have surface groups infos from your source ?
    groups=?  # groups is expected to be a python list, put what you want in

# to numpy
m = Mesh(...)

points = np.asarray(glm.array(m.points))
faces = np.asarray(m.faces)
tracks = np.asarray(m.faces)  # you way not need to extract tracks since most 3D computing libraries do not have this notion
# no point in converting groups to numpy since most groups are `None` or `dict` instances
Eva-xx commented 1 year ago

Thank you for your reply! I solved the problem just fine using the glm.array function you mentioned!

Regarding the installation of pymadcad v0.13, the result of pip install pymadcad==0.13.0 is as follows：

Collecting pymadcad==0.13.0
  Using cached pymadcad-0.13.0.tar.gz (1.4 MB)
Requirement already satisfied: pyglm>=2.5.5 in d:\anaconda\lib\site-packages (from pymadcad==0.13.0) (2.5.7)
Requirement already satisfied: moderngl>=5.6 in d:\anaconda\lib\site-packages (from pymadcad==0.13.0) (5.6.4)
Requirement already satisfied: numpy>=1.1 in d:\anaconda\lib\site-packages (from pymadcad==0.13.0) (1.21.2)
Requirement already satisfied: scipy>=1.3 in d:\anaconda\lib\site-packages (from pymadcad==0.13.0) (1.7.1)
Requirement already satisfied: PyQt5>=5 in d:\anaconda\lib\site-packages (from pymadcad==0.13.0) (5.15.7)
Requirement already satisfied: Pillow>=5.4 in d:\anaconda\lib\site-packages (from pymadcad==0.13.0) (8.4.0)
Requirement already satisfied: pyyaml>=5 in d:\anaconda\lib\site-packages (from pymadcad==0.13.0) (6.0)
Collecting arrex>=0.3.1
  Using cached arrex-0.5.0.tar.gz (197 kB)
    ERROR: Command errored out with exit status 1:
     command: 'D:\Anaconda\python.exe' -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\USER\\App
Data\\Local\\Temp\\pip-install-ru5dt2hh\\arrex_19730870d46c4499930072f02ae7d100\\setup.py'"'"'; __file__='"'"'C:\\Us
ers\\USER\\AppData\\Local\\Temp\\pip-install-ru5dt2hh\\arrex_19730870d46c4499930072f02ae7d100\\setup.py'"'"';f=getat
tr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(comp
ile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base 'C:\Users\USER\AppData\Local\Temp\pip-pip-egg-info-kpv43cx
f'
         cwd: C:\Users\USER\AppData\Local\Temp\pip-install-ru5dt2hh\arrex_19730870d46c4499930072f02ae7d100\
    Complete output (5 lines):
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "C:\Users\USER\AppData\Local\Temp\pip-install-ru5dt2hh\arrex_19730870d46c4499930072f02ae7d100\setup.py",
line 40, in <module>
        long_description = open('README.md').read(),
    UnicodeDecodeError: 'gbk' codec can't decode byte 0x8b in position 3863: illegal multibyte sequence
    ----------------------------------------
WARNING: Discarding https://files.pythonhosted.org/packages/ca/67/2c129af4b4a397a9f758d99e9d01c71014e7670cb6b0073b0d
11832a9e88/arrex-0.5.0.tar.gz#sha256=10ee3405267fb85f781ad1e8658e34ef6ff5bdf0f4d020acb7629e10960ecabc (from https://
pypi.org/simple/arrex/) (requires-python:>=3.8). Command errored out with exit status 1: python setup.py egg_info Ch
eck the logs for full command output.
  Using cached arrex-0.4.1.tar.gz (196 kB)
    ERROR: Command errored out with exit status 1:
     command: 'D:\Anaconda\python.exe' -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\USER\\App
Data\\Local\\Temp\\pip-install-ru5dt2hh\\arrex_7c5cb2422c5e454daa1f0cecab5df97c\\setup.py'"'"'; __file__='"'"'C:\\Us
ers\\USER\\AppData\\Local\\Temp\\pip-install-ru5dt2hh\\arrex_7c5cb2422c5e454daa1f0cecab5df97c\\setup.py'"'"';f=getat
tr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(comp
ile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base 'C:\Users\USER\AppData\Local\Temp\pip-pip-egg-info-afstc0h
w'
         cwd: C:\Users\USER\AppData\Local\Temp\pip-install-ru5dt2hh\arrex_7c5cb2422c5e454daa1f0cecab5df97c\
    Complete output (5 lines):
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "C:\Users\USER\AppData\Local\Temp\pip-install-ru5dt2hh\arrex_7c5cb2422c5e454daa1f0cecab5df97c\setup.py",
line 40, in <module>
        long_description = open('README.md').read(),
    UnicodeDecodeError: 'gbk' codec can't decode byte 0x8b in position 3863: illegal multibyte sequence
    ----------------------------------------
WARNING: Discarding https://files.pythonhosted.org/packages/c8/a0/84ebac8b48c35c167fda9522bc23e142931cc38571e7489d08
dd7a0af1bf/arrex-0.4.1.tar.gz#sha256=1c0cffca90f1e93d0a8dcbfdf448107dc2e7e0cea96d0bbc42e50300273213d3 (from https://
pypi.org/simple/arrex/) (requires-python:>=3.8). Command errored out with exit status 1: python setup.py egg_info Ch
eck the logs for full command output.
  Using cached arrex-0.4.0.tar.gz (196 kB)
    ERROR: Command errored out with exit status 1:
     command: 'D:\Anaconda\python.exe' -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\USER\\App
Data\\Local\\Temp\\pip-install-ru5dt2hh\\arrex_198cb0a2b1904a24a0a5f2bce1f516f6\\setup.py'"'"'; __file__='"'"'C:\\Us
ers\\USER\\AppData\\Local\\Temp\\pip-install-ru5dt2hh\\arrex_198cb0a2b1904a24a0a5f2bce1f516f6\\setup.py'"'"';f=getat
tr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(comp
ile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base 'C:\Users\USER\AppData\Local\Temp\pip-pip-egg-info-57yeylj
w'
         cwd: C:\Users\USER\AppData\Local\Temp\pip-install-ru5dt2hh\arrex_198cb0a2b1904a24a0a5f2bce1f516f6\
    Complete output (5 lines):
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "C:\Users\USER\AppData\Local\Temp\pip-install-ru5dt2hh\arrex_198cb0a2b1904a24a0a5f2bce1f516f6\setup.py",
line 40, in <module>
        long_description = open('README.md').read(),
    UnicodeDecodeError: 'gbk' codec can't decode byte 0x8b in position 3863: illegal multibyte sequence
    ----------------------------------------
WARNING: Discarding https://files.pythonhosted.org/packages/62/5c/54ef5561609590c1edaba0248a55c81dfea15839543501f1c4
5b116f58d1/arrex-0.4.0.tar.gz#sha256=f60db382db94e5cc31720b2c8b6152424400c739049e979d2499d5e6c2ea77b5 (from https://
pypi.org/simple/arrex/) (requires-python:>=3.8). Command errored out with exit status 1: python setup.py egg_info Ch
eck the logs for full command output.
  Using cached arrex-0.3.2.tar.gz (190 kB)
    ERROR: Command errored out with exit status 1:
     command: 'D:\Anaconda\python.exe' -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\USER\\App
Data\\Local\\Temp\\pip-install-ru5dt2hh\\arrex_bfa6259a475f4fba87064b7cb8647af8\\setup.py'"'"'; __file__='"'"'C:\\Us
ers\\USER\\AppData\\Local\\Temp\\pip-install-ru5dt2hh\\arrex_bfa6259a475f4fba87064b7cb8647af8\\setup.py'"'"';f=getat
tr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(comp
ile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base 'C:\Users\USER\AppData\Local\Temp\pip-pip-egg-info-_5u5v2w
a'
         cwd: C:\Users\USER\AppData\Local\Temp\pip-install-ru5dt2hh\arrex_bfa6259a475f4fba87064b7cb8647af8\
    Complete output (5 lines):
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "C:\Users\USER\AppData\Local\Temp\pip-install-ru5dt2hh\arrex_bfa6259a475f4fba87064b7cb8647af8\setup.py",
line 40, in <module>
        long_description = open('README.md').read(),
    UnicodeDecodeError: 'gbk' codec can't decode byte 0x8b in position 3863: illegal multibyte sequence
    ----------------------------------------
WARNING: Discarding https://files.pythonhosted.org/packages/00/b5/59f1f3dd594f4c2e057f5aed4560cf1d6f839d6a712b08c22d
910e832ba1/arrex-0.3.2.tar.gz#sha256=b2a0da404cefc39a66961a82d8a808414e6ef274b2ffd26d59ee473299bf4e26 (from https://
pypi.org/simple/arrex/) (requires-python:>=3.8). Command errored out with exit status 1: python setup.py egg_info Ch
eck the logs for full command output.
  Using cached arrex-0.3.1.tar.gz (191 kB)
    ERROR: Command errored out with exit status 1:
     command: 'D:\Anaconda\python.exe' -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\USER\\App
Data\\Local\\Temp\\pip-install-ru5dt2hh\\arrex_a2599b7cdf764cdd91b7ab66cc21f443\\setup.py'"'"'; __file__='"'"'C:\\Us
ers\\USER\\AppData\\Local\\Temp\\pip-install-ru5dt2hh\\arrex_a2599b7cdf764cdd91b7ab66cc21f443\\setup.py'"'"';f=getat
tr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(comp
ile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base 'C:\Users\USER\AppData\Local\Temp\pip-pip-egg-info-fygxv1c
z'
         cwd: C:\Users\USER\AppData\Local\Temp\pip-install-ru5dt2hh\arrex_a2599b7cdf764cdd91b7ab66cc21f443\
    Complete output (5 lines):
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "C:\Users\USER\AppData\Local\Temp\pip-install-ru5dt2hh\arrex_a2599b7cdf764cdd91b7ab66cc21f443\setup.py",
line 40, in <module>
        long_description = open('README.md').read(),
    UnicodeDecodeError: 'gbk' codec can't decode byte 0x8b in position 3863: illegal multibyte sequence
    ----------------------------------------
WARNING: Discarding https://files.pythonhosted.org/packages/0d/7d/b7cd7199969e11e6a5c42b85f65af5667d5c6683fdd5080e35
f42665e764/arrex-0.3.1.tar.gz#sha256=8aa46ebc90bfa3e78266a074dcc1c3459e85682fb21adaedbb7ae424e9a65d81 (from https://
pypi.org/simple/arrex/) (requires-python:>=3.8). Command errored out with exit status 1: python setup.py egg_info Ch
eck the logs for full command output.
ERROR: Could not find a version that satisfies the requirement arrex>=0.3.1 (from pymadcad)
ERROR: No matching distribution found for arrex>=0.3.1

But when I upgrade python version from v3.8 to v3.9, pymadcad v0.13.0 is installed successfully. Pymadcad v0.13.1 still cannot be installed successfully.

Collecting pymadcad==0.13.1
  Using cached pymadcad-0.13.1.tar.gz (1.1 MB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
    Preparing wheel metadata ... done
  WARNING: Requested pymadcad==0.13.1 from https://files.pythonhosted.org/packages/42/2d/b972cda45e840c268548ee41f3d
74bbd07aec3aaebe6eb77a98abb33999a/pymadcad-0.13.1.tar.gz#sha256=fe2727b6e8b3a7c8364896666f31d6214211ad66eee6bdf826d0
0670096edf86, but installing version 0.9.3
WARNING: Discarding https://files.pythonhosted.org/packages/42/2d/b972cda45e840c268548ee41f3d74bbd07aec3aaebe6eb77a9
8abb33999a/pymadcad-0.13.1.tar.gz#sha256=fe2727b6e8b3a7c8364896666f31d6214211ad66eee6bdf826d00670096edf86 (from http
s://pypi.org/simple/pymadcad/) (requires-python:>=3.8). Requested pymadcad==0.13.1 from https://files.pythonhosted.o
rg/packages/42/2d/b972cda45e840c268548ee41f3d74bbd07aec3aaebe6eb77a98abb33999a/pymadcad-0.13.1.tar.gz#sha256=fe2727b
6e8b3a7c8364896666f31d6214211ad66eee6bdf826d00670096edf86 has inconsistent version: filename has '0.13.1', but metad
ata has '0.9.3'
ERROR: Could not find a version that satisfies the requirement pymadcad==0.13.1
ERROR: No matching distribution found for pymadcad==0.13.1
jimy-byerley commented 1 year ago

That's a weird issue with for the first trace. I don't know what is the cause: I'm using python v3.8 on my side too. I guess this is an issue with the anaconda environment

For the second trace, it seems to reflect a warning that's showing on my side when I do the same. This is due to file that I packed by accident with the module (It was in the same folder ...). I just need rebuild the package properly. I released v0.13.2 that should fix it

Eva-xx commented 1 year ago

Great! Thank you for your reply！