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DAMASK_EICMD
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don't change Neper material ID definition 

Neper material ID start at 0 if a buffer layer is added
(run "neper -T -n 100 -tesrsize 320:320:320 -domain "cylinder(20,10)"  -format vtk"),
otherwise at 1.

Hence, leave the IDs untouched and let the user change the
numbering (either by a constant offset or by re-numbering): "explicit is better than implicit"
This commit is contained in:
Martin Diehl 2023-05-22 17:32:39 +02:00
parent 85a06c3ed7
commit cfdf33e4b1
2 changed files with 8 additions and 3 deletions
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9
python/damask/_grid.py
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@ -317,6 +317,11 @@ class Grid:
loaded : damask.Grid loaded : damask.Grid
Grid-based geometry from file. Grid-based geometry from file.
Notes
-----
Material indices in Neper usually start at 1 unless
a buffer material with index 0 is added.
Examples Examples
-------- --------
Read a periodic polycrystal generated with Neper. Read a periodic polycrystal generated with Neper.
@ -325,7 +330,7 @@ class Grid:
>>> N_grains = 20 >>> N_grains = 20
>>> cells = (32,32,32) >>> cells = (32,32,32)
>>> damask.util.run(f'neper -T -n {N_grains} -tesrsize {cells[0]}:{cells[1]}:{cells[2]} -periodicity all -format vtk') >>> damask.util.run(f'neper -T -n {N_grains} -tesrsize {cells[0]}:{cells[1]}:{cells[2]} -periodicity all -format vtk')
>>> damask.Grid.load_Neper(f'n{N_grains}-id1.vtk') >>> damask.Grid.load_Neper(f'n{N_grains}-id1.vtk').renumber()
cells: 32 × 32 × 32 cells: 32 × 32 × 32
size: 1.0 × 1.0 × 1.0 m³ size: 1.0 × 1.0 × 1.0 m³
origin: 0.0 0.0 0.0 m origin: 0.0 0.0 0.0 m
@ -336,7 +341,7 @@ class Grid:
cells = np.array(v.vtk_data.GetDimensions())-1 cells = np.array(v.vtk_data.GetDimensions())-1
bbox = np.array(v.vtk_data.GetBounds()).reshape(3,2).T bbox = np.array(v.vtk_data.GetBounds()).reshape(3,2).T
return Grid(material = v.get('MaterialId').reshape(cells,order='F').astype('int32',casting='unsafe') - 1, return Grid(material = v.get('MaterialId').reshape(cells,order='F').astype('int32',casting='unsafe'),
size = bbox[1] - bbox[0], size = bbox[1] - bbox[0],
origin = bbox[0], origin = bbox[0],
comments = util.execution_stamp('Grid','load_Neper'), comments = util.execution_stamp('Grid','load_Neper'),

2
python/tests/test_Grid.py
View File

@ -501,7 +501,7 @@ class TestGrid:
assert current == reference assert current == reference
def test_load_Neper_reference(self,res_path,update): def test_load_Neper_reference(self,res_path,update):
current = Grid.load_Neper(res_path/'n10-id1_scaled.vtk') current = Grid.load_Neper(res_path/'n10-id1_scaled.vtk').renumber()
reference = Grid.load(res_path/'n10-id1_scaled.vti') reference = Grid.load(res_path/'n10-id1_scaled.vti')
if update: if update:
current.save(res_path/'n10-id1_scaled.vti') current.save(res_path/'n10-id1_scaled.vti')