+# Public class: Mesh_Cartesian_3D
+# --------------------------------------
+## Defines a Body Fitting 3D algorithm
+# @ingroup l3_algos_basic
+#
+class Mesh_Cartesian_3D(Mesh_Algorithm):
+
+ def __init__(self, mesh, geom=0):
+ self.Create(mesh, geom, "Cartesian_3D")
+ self.hyp = None
+ return
+
+ ## Defines "Body Fitting parameters" hypothesis
+ # @param xGridDef is definition of the grid along the X asix.
+ # It can be in either of two following forms:
+ # - Explicit coordinates of nodes, e.g. [-1.5, 0.0, 3.1] or range( -100,200,10)
+ # - Functions f(t) defining grid spacing at each point on grid axis. If there are
+ # several functions, they must be accompanied by relative coordinates of
+ # points dividing the whole shape into ranges where the functions apply; points
+ # coodrinates should vary within (0.0, 1.0) range. Parameter \a t of the spacing
+ # function f(t) varies from 0.0 to 1.0 witin a shape range.
+ # Examples:
+ # - "10.5" - defines a grid with a constant spacing
+ # - [["1", "1+10*t", "11"] [0.1, 0.6]] - defines different spacing in 3 ranges.
+ # @param yGridDef defines the grid along the Y asix the same way as \a xGridDef does
+ # @param zGridDef defines the grid along the Z asix the same way as \a xGridDef does
+ # @param sizeThreshold (> 1.0) defines a minimal size of a polyhedron so that
+ # a polyhedron of size less than hexSize/sizeThreshold is not created
+ # @param UseExisting if ==true - searches for the existing hypothesis created with
+ # the same parameters, else (default) - creates a new one
+ def SetGrid(self, xGridDef, yGridDef, zGridDef, sizeThreshold=4.0, UseExisting=False):
+ if not self.hyp:
+ self.hyp = self.Hypothesis("CartesianParameters3D",
+ [xGridDef, yGridDef, zGridDef, sizeThreshold],
+ UseExisting=UseExisting, CompareMethod=self._compareHyp)
+ if not self.mesh.IsUsedHypothesis( self.hyp, self.geom ):
+ self.mesh.AddHypothesis( self.hyp, self.geom )
+
+ for axis, gridDef in enumerate( [xGridDef, yGridDef, zGridDef]):
+ if not gridDef: raise ValueError, "Empty grid definition"
+ if isinstance( gridDef, str ):
+ self.hyp.SetGridSpacing( [gridDef], [], axis )
+ elif isinstance( gridDef[0], str ):
+ self.hyp.SetGridSpacing( gridDef, [], axis )
+ elif isinstance( gridDef[0], int ) or \
+ isinstance( gridDef[0], float ):
+ self.hyp.SetGrid(gridDef, axis )
+ else:
+ self.hyp.SetGridSpacing( gridDef[0], gridDef[1], axis )
+ self.hyp.SetSizeThreshold( sizeThreshold )
+ return self.hyp
+
+ def _compareHyp(self,hyp,args):
+ # not implemented yet
+ return False