# sfepy.mesh.geom_tools module¶

class `sfepy.mesh.geom_tools.``geometry`(dim=3)[source]

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.getpoints()

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

`addline`(n, l)[source]

l=[p1,p2]

`addlines`(ls, off=1)[source]

ls=[l1, l2, …]

`addphysicalsurface`(n, surfacelist)[source]

surfacelist=[s1,s2,s3,…]

`addphysicalvolume`(n, volumelist)[source]

volumelist=[v1,v2,v3,…]

`addpoint`(n, p)[source]

p=[x,y,z]

`addpoints`(ps, off=1)[source]

ps=[p1, p2, …]

`addsurface`(n, s, is_hole=False)[source]

s=[l1,l2,l3,…]

`addsurfaces`(ss, off=1)[source]

s=[s1,s2,s3,…]

`addvolume`(n, v)[source]

v=[s1,s2,s3,…]

`addvolumes`(vs, off=1)[source]

v=[v1,v2,v3,…]

static `from_gmsh_file`(filename)[source]

Import geometry - Gmsh geometry format.

Parameters
filenamestring

file name

Returns
geogeometry

geometry description

`getBCnum`(snum)[source]
`leaveonlyphysicalsurfaces`()[source]
`leaveonlyphysicalvolumes`()[source]
`printinfo`(verbose=False)[source]
`splitlines`(ls, n)[source]
`to_poly_file`(filename)[source]

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

Parameters
geogeometry

geometry description

filenamestring

file name

class `sfepy.mesh.geom_tools.``geomobject`[source]
`getn`()[source]
class `sfepy.mesh.geom_tools.``line`(g, n, l)[source]
`getpoints`()[source]
class `sfepy.mesh.geom_tools.``physicalsurface`(g, n, s)[source]
`getsurfaces`()[source]
class `sfepy.mesh.geom_tools.``physicalvolume`(g, n, v)[source]
`getvolumes`()[source]
class `sfepy.mesh.geom_tools.``point`(g, n, p)[source]
`getstr`()[source]
`getxyz`()[source]
class `sfepy.mesh.geom_tools.``surface`(g, n, s, is_hole=False)[source]
`getcenterpoint`()[source]
`getholepoints`()[source]
`getinsidepoint`()[source]
`getlines`()[source]
`getpoints`()[source]
`separate`(s)[source]
class `sfepy.mesh.geom_tools.``volume`(g, n, v)[source]
`getinsidepoint`()[source]
`getsurfaces`()[source]