Get line connection for each polydata after using Slice feature #7487
-
First check
Commit to Help
Sample Code What is the problem, question, or error?Write a short description telling me what you are doing, what you expect to happen, and what is currently happening. mesh = pv.read(path)
mesh_slice = mesh.slice(normal=[.8, .2, .75], origin=mesh.center)
mesh_strip = mesh_slice.strip()DescriptionI have a surface mesh that I am trying to slice along a normal. The slicing can create multiple enclosed meshes. For example when I use strip I get 2 enclosed lines sequences but when I use the strip feature it gives me 6 different line sequences so of which don't enclose so I assume the connect across each other. I also tried connectivity and cell_connectivity but get odd results for example: System InformationOS : Windows (10 10.0.19045 SP0 Multiprocessor Free)
CPU(s) : 40
Machine : AMD64
Architecture : 64bit
RAM : 63.7 GiB
Environment : IPython
GPU Vendor : NVIDIA Corporation
GPU Renderer : Quadro RTX 8000/PCIe/SSE2
GPU Version : 4.5.0 NVIDIA 471.11
MathText Support : True
Python 3.11.0 (main, Oct 24 2022, 18:26:48) [MSC v.1933 64 bit (AMD64)]
pyvista : 0.44.2
vtk : 9.4.2
numpy : 2.2.3
matplotlib : 3.10.1
scooby : 0.10.0
pooch : 1.8.2
pillow : 11.1.0
imageio : 2.36.1
pyvistaqt : 0.11.1
IPython : 8.12.3
ipywidgets : 8.1.5
scipy : 1.15.2
tqdm : 4.67.1
nest_asyncio : 1.6.0ScreenshotsNo response |
Beta Was this translation helpful? Give feedback.
Replies: 2 comments 2 replies
-
|
The connectivity filter might be relevant here. |
Beta Was this translation helpful? Give feedback.
-
|
Hey, thanks for the response! I found that someone asked a similar question here: But this method does not work for me, I think it only works for simply cases. This is my output after stripping: The previous discussion code, gives this (showing only first and last index): So the first index [0, 0] starts and ends at the same index so it is enclosed. But the next 4 actually need to be combined to one. |
Beta Was this translation helpful? Give feedback.
-
|
Isn't it just a matter of using the max_length parameter of the strip method, that is fixed to 1000 by default? and then re-organizing the data, the line cannot have a length longer than 1000 As an example, extract_lines_info just shows the first and last indices of the line and its length:
array([[ 0, 854, 1001], where you see that the first line is limited to 1000 elements (the first point has duplicated index) array([[ 0, 0, 1513]]) The same works if you have multiple lines to re-arrange: array([[ 0, 142, 1001], array([[ 0, 0, 1559], |
Beta Was this translation helpful? Give feedback.
-
|
Yes this worked, thanks! |
Beta Was this translation helpful? Give feedback.
Isn't it just a matter of using the max_length parameter of the strip method, that is fixed to 1000 by default? and then re-organizing the data, the line cannot have a length longer than 1000
As an example, extract_lines_info just shows the first and last indices of the line and its length:
array([[ 0, 854, 1001],
[ 6, 0, 258],
[ 6, 854, 256]])
where you see that the first line is limited to 1000 elements (the first point has duplicated index)
array([[ 0, 0, 1513]])