sfepy.mesh.geom_tools module

class sfepy.mesh.geom_tools.geometry(dim=3)

The geometry is given by a sets of points (d0), lines (d1), surfaces (d2) and volumes (d3). A lines are constructed from 2 points, a surface from any number of lines, a volume from any number of surfaces.

Physical volumes are contruted from any number of volumes.

The self.d0, self.d1, self.d2 and self.d3 are dictionaries holding a map

geometry element number -> instance of point,line,surface of volume

Examples

To get all the points which define a surface 5, use:

self.d2[5].getpoints()

This would give you a list [..] of point() instances.

addline(n, l)

l=[p1,p2]

addlines(ls, off=1)

ls=[l1, l2, …]

addphysicalsurface(n, surfacelist)

surfacelist=[s1,s2,s3,…]

addphysicalvolume(n, volumelist)

volumelist=[v1,v2,v3,…]

addpoint(n, p)

p=[x,y,z]

addpoints(ps, off=1)

ps=[p1, p2, …]

addsurface(n, s, is_hole=False)

s=[l1,l2,l3,…]

addsurfaces(ss, off=1)

s=[s1,s2,s3,…]

addvolume(n, v)

v=[s1,s2,s3,…]

addvolumes(vs, off=1)

v=[v1,v2,v3,…]

static from_gmsh_file(filename)

Import geometry - Gmsh geometry format.

Parameters:

filenamestring

file name

Returns:

geogeometry

geometry description

getBCnum(snum)

leaveonlyphysicalsurfaces()

leaveonlyphysicalvolumes()

printinfo(verbose=False)

splitlines(ls, n)

to_poly_file(filename)

Export geometry to poly format (tetgen and triangle geometry format).

Parameters:

geogeometry

geometry description

filenamestring

file name

class sfepy.mesh.geom_tools.geomobject

getn()

class sfepy.mesh.geom_tools.line(g, n, l)

getpoints()

class sfepy.mesh.geom_tools.physicalsurface(g, n, s)

getsurfaces()

class sfepy.mesh.geom_tools.physicalvolume(g, n, v)

getvolumes()

class sfepy.mesh.geom_tools.point(g, n, p)

getstr()

getxyz()

class sfepy.mesh.geom_tools.surface(g, n, s, is_hole=False)

getcenterpoint()

getholepoints()

getinsidepoint()

getlines()

getpoints()

separate(s)

class sfepy.mesh.geom_tools.volume(g, n, v)

getinsidepoint()

getsurfaces()