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54 lines
1.8 KiB
Python
54 lines
1.8 KiB
Python
from libngpy.geom2d import *
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from libngpy.meshing import *
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tmp_generate_mesh = SplineGeometry.GenerateMesh
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def geom2d_meshing_func (geom, **args):
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if "mp" in args:
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return tmp_generate_mesh (geom, args["mp"])
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else:
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return tmp_generate_mesh (geom, MeshingParameters (**args))
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SplineGeometry.GenerateMesh = geom2d_meshing_func
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unit_square = SplineGeometry()
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pnts = [ (0,0), (1,0), (1,1), (0,1) ]
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lines = [ (0,1,1,"bottom"), (1,2,2,"right"), (2,3,3,"top"), (3,0,4,"left") ]
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pnums = [unit_square.AppendPoint(*p) for p in pnts]
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for l1,l2,bc,bcname in lines:
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unit_square.Append( ["line", pnums[l1], pnums[l2]], bc=bcname)
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def MakeRectangle (geo, p1, p2, bc=None, bcs=None, **args):
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p1x, p1y = p1
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p2x, p2y = p2
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p1x,p2x = min(p1x,p2x), max(p1x, p2x)
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p1y,p2y = min(p1y,p2y), max(p1y, p2y)
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if not bcs: bcs=4*[bc]
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print ("bcs = ", bcs)
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pts = [geo.AppendPoint(*p) for p in [(p1x,p1y), (p2x, p1y), (p2x, p2y), (p1x, p2y)]]
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for p1,p2,bc in [(0,1,bcs[0]), (1, 2, bcs[1]), (2, 3, bcs[2]), (3, 0, bcs[3])]:
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geo.Append( ["line", pts[p1], pts[p2]], bc=bc, **args)
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def MakeCircle (geo, c, r, **args):
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cx,cy = c
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pts = [geo.AppendPoint(*p) for p in [(cx,cy-r), (cx+r,cy-r), (cx+r,cy), (cx+r,cy+r), \
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(cx,cy+r), (cx-r,cy+r), (cx-r,cy), (cx-r,cy-r)]]
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for p1,p2,p3 in [(0,1,2), (2,3,4), (4, 5, 6), (6, 7, 0)]:
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geo.Append( ["spline3", pts[p1], pts[p2], pts[p3]], **args)
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SplineGeometry.AddCircle = lambda geo, c, r, **args : MakeCircle(geo, c, r, **args)
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SplineGeometry.AddRectangle = lambda geo, p1, p2, **args : MakeRectangle(geo, p1, p2, **args)
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SplineGeometry.AddSegment = SplineGeometry.Append
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SplineGeometry.AddPoint = SplineGeometry.AppendPoint
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__all__ = ['SplineGeometry', 'unit_square']
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