User Forum of Software BASEMENT

Pérez

User

Registered: 2021-05-17

Posts: 3

Quality meshing bug

hi,

I work with QGIS 3.10.0 and Basemesh 1.4.5. After asking for Quality meshing, I had received the following answer :

1)    Meshing via Triangle failed! Node result file not found.
2)    could not open the file C:/Users/Admin/AppData/Roaming/QGIS/QGIS3/profiles/default\python/plugins/BASEmesh\triangle_tempfiles\Project1_Quality.1.node!

And te status message is :

Prefix of triangle output-files: RESULT1

Plugin directory: C:/Users/Admin/AppData/Roaming/QGIS/QGIS3/profiles/default\python/plugins/BASEmesh

Triangle successfully initialized

Processing input data...

Layer with breaklines specified: Breakline_Quality_Mesh_RG

> Layer with regions specified: REGION_MARKER_RG

- field with maximum element size data: max_area

- field with material index data: MATID

- Field with hole marker: hole

TRIANGLE INPUT file RESULT1_Quality.poly successfully written

> EXECUTION OF TRIANGLE... <

Opening C:/Users/Admin/AppData/Roaming/QGIS/QGIS3/profiles/default/python/plugins/BASEmesh/triangle_tempfiles/RESULT1_Quality.poly.
Constructing Delaunay triangulation by divide-and-conquer method.
Recovering segments in Delaunay triangulation.
Internal error in segmentintersection():
  Topological inconsistency after splitting a segment.
  Please report this bug to jrs@cs.berkeley.edu
  Include the message above, your input data set, and the exact
    command line you used to run Triangle.

how to solve this, please ? Thanks in advance.

Last edited by Pérez (2021-05-17 09:54:43)

Matteo Facchini

Developer

From: Trento

Registered: 2014-09-05

Posts: 278

Re: Quality meshing bug

Hi,

this sometimes happens to me when I do not snap lines properly.
Try and check where more than 2 lines are snapped together, especially if you have stringdefs and breaklines snapped together.

Furthermore, I strongly suggest you to update QGIS to its latest version!

Best
Matteo