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53 lines
1.6 KiB
Python
53 lines
1.6 KiB
Python
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from netgen.csg import *
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from netgen import meshing
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import filecmp
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import difflib
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from math import sqrt, cos, sin
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def CreateQuad():
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base = Plane(Pnt(0,0,0),Vec(0,0,1))
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surface = SplineSurface(base)
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pts = [(-0.2,-0.2,0),(-0.2,0.2,0),(0.2,0.2,0),(0.2,-0.2,0)]
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geopts = [surface.AddPoint(*p) for p in pts]
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for p1,p2,bc in [(0,1,"wire"), (1, 2,"contact"),(2,3,"wire"),(3,0,"wire")]:
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surface.AddSegment(geopts[p1],geopts[p2],bc)
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return surface
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Cross = lambda a,b: [a[1]*b[2]-a[2]*b[1],a[2]*b[0]-a[0]*b[2],a[0]*b[1]-b[0]*a[1]]
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def CreateGeo():
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geo = CSGeometry()
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air = OrthoBrick(Pnt(-1,-1,-1),Pnt(1,1,1))
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geo.Add(air.mat("air"))
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surface = CreateQuad()
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geo.AddSplineSurface(surface)
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return geo
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def test_BBNDsave():
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mesh = CreateGeo().GenerateMesh(maxh=0.4,perfstepsend = meshing.MeshingStep.MESHSURFACE)
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for i in range(2):
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mesh.GenerateVolumeMesh(mp = MeshingParameters(only3D_domain=i+1,maxh=0.4))
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mesh.SetGeometry(None)
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mesh.Save("test.vol")
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mesh2 = meshing.Mesh()
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mesh2.Load("test.vol")
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mesh2.Save("test2.vol")
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with open("test.vol","r") as f:
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first = f.readlines()
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with open("test2.vol","r") as f:
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second = f.readlines()
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# exclude the face colours section (because they aren't in the same order)
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for i,line in enumerate(first):
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if line[0:12] == "face_colours":
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first = first[0:i]
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second = second[0:i]
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break
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diff = difflib.context_diff(first,second)
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print("File diff:")
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l = list(diff)
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print(*l)
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assert len(l)==0
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