## @defgroup l3_hypos_ghs3dh GHS3D Parameters hypothesis
## @defgroup l3_hypos_blsurf BLSURF Parameters hypothesis
## @defgroup l3_hypos_hexotic Hexotic Parameters hypothesis
+## @defgroup l3_hypos_quad Quadrangle Parameters hypothesis
## @defgroup l3_hypos_additi Additional Hypotheses
## @}
# Methods of splitting a hexahedron into tetrahedra
Hex_5Tet, Hex_6Tet, Hex_24Tet = 1, 2, 3
+# import items of enum QuadType
+for e in StdMeshers.QuadType._items: exec('%s = StdMeshers.%s'%(e,e))
## Converts an angle from degrees to radians
def DegreesToRadians(AngleInDegrees):
# @ingroup l3_algos_basic
class Mesh_Quadrangle(Mesh_Algorithm):
+ params=0
+
## Private constructor.
def __init__(self, mesh, geom=0):
Mesh_Algorithm.__init__(self)
self.Create(mesh, geom, "Quadrangle_2D")
+ return
- ## Defines "QuadranglePreference" hypothesis, forcing construction
- # of quadrangles if the number of nodes on the opposite edges is not the same
- # while the total number of nodes on edges is even
- #
- # @ingroup l3_hypos_additi
- def QuadranglePreference(self):
- hyp = self.Hypothesis("QuadranglePreference", UseExisting=1,
- CompareMethod=self.CompareEqualHyp)
- return hyp
+ ## Defines "QuadrangleParameters" hypothesis
+ # @param quadType defines the algorithm of transition between differently descretized
+ # sides of a geometrical face:
+ # - QUAD_STANDARD - both triangles and quadrangles are possible in the transition
+ # area along the finer meshed sides.
+ # - QUAD_TRIANGLE_PREF - only triangles are built in the transition area along the
+ # finer meshed sides.
+ # - QUAD_QUADRANGLE_PREF - only quadrangles are built in the transition area along
+ # the finer meshed sides, iff the total quantity of segments on
+ # all four sides of the face is even (divisible by 2).
+ # - QUAD_QUADRANGLE_PREF_REVERSED - same as QUAD_QUADRANGLE_PREF but the transition
+ # area is located along the coarser meshed sides.
+ # - QUAD_REDUCED - only quadrangles are built and the transition between the sides
+ # is made gradually, layer by layer. This type has a limitation on
+ # the number of segments: one pair of opposite sides must have the
+ # same number of segments, the other pair must have an even difference
+ # between the numbers of segments on the sides.
+ # @param triangleVertex: vertex of a trilateral geometrical face, around which triangles
+ # will be created while other elements will be quadrangles.
+ # Vertex can be either a GEOM_Object or a vertex ID within the
+ # shape to mesh
+ # @param UseExisting: if ==true - searches for the existing hypothesis created with
+ # the same parameters, else (default) - creates a new one
+ # @ingroup l3_hypos_quad
+ def QuadrangleParameters(self, quadType=StdMeshers.QUAD_STANDARD, triangleVertex=0, UseExisting=0):
+ vertexID = triangleVertex
+ if isinstance( triangleVertex, geompyDC.GEOM._objref_GEOM_Object ):
+ vertexID = self.mesh.geompyD.GetSubShapeID( self.mesh.geom, triangleVertex )
+ if not self.params:
+ compFun = lambda hyp,args: \
+ hyp.GetQuadType() == args[0] and \
+ ( hyp.GetTriaVertex()==args[1] or ( hyp.GetTriaVertex()<1 and args[1]<1))
+ self.params = self.Hypothesis("QuadrangleParams", [quadType,vertexID],
+ UseExisting = UseExisting, CompareMethod=compFun)
+ pass
+ if self.params.GetQuadType() != quadType:
+ self.params.SetQuadType(quadType)
+ if vertexID > 0:
+ self.params.SetTriaVertex( vertexID )
+ return self.params
- ## Defines "TrianglePreference" hypothesis, forcing construction
- # of triangles in the refinement area if the number of nodes
- # on the opposite edges is not the same
- #
- # @ingroup l3_hypos_additi
- def TrianglePreference(self):
- hyp = self.Hypothesis("TrianglePreference", UseExisting=1,
- CompareMethod=self.CompareEqualHyp)
- return hyp
+ ## Defines "QuadrangleParams" hypothesis with a type of quadrangulation that only
+ # quadrangles are built in the transition area along the finer meshed sides,
+ # iff the total quantity of segments on all four sides of the face is even.
+ # @param reversed if True, transition area is located along the coarser meshed sides.
+ # @param UseExisting: if ==true - searches for the existing hypothesis created with
+ # the same parameters, else (default) - creates a new one
+ # @ingroup l3_hypos_quad
+ def QuadranglePreference(self, reversed=False, UseExisting=0):
+ if reversed:
+ return self.QuadrangleParameters(QUAD_QUADRANGLE_PREF_REVERSED,UseExisting=UseExisting)
+ return self.QuadrangleParameters(QUAD_QUADRANGLE_PREF,UseExisting=UseExisting)
+
+ ## Defines "QuadrangleParams" hypothesis with a type of quadrangulation that only
+ # triangles are built in the transition area along the finer meshed sides.
+ # @param UseExisting: if ==true - searches for the existing hypothesis created with
+ # the same parameters, else (default) - creates a new one
+ # @ingroup l3_hypos_quad
+ def TrianglePreference(self, UseExisting=0):
+ return self.QuadrangleParameters(QUAD_TRIANGLE_PREF,UseExisting=UseExisting)
+
+ ## Defines "QuadrangleParams" hypothesis with a type of quadrangulation that only
+ # quadrangles are built and the transition between the sides is made gradually,
+ # layer by layer. This type has a limitation on the number of segments: one pair
+ # of opposite sides must have the same number of segments, the other pair must
+ # have an even difference between the numbers of segments on the sides.
+ # @param UseExisting: if ==true - searches for the existing hypothesis created with
+ # the same parameters, else (default) - creates a new one
+ # @ingroup l3_hypos_quad
+ def Reduced(self, UseExisting=0):
+ return self.QuadrangleParameters(QUAD_REDUCED,UseExisting=UseExisting)
- ## Defines "QuadrangleParams" hypothesis
+ ## Defines "QuadrangleParams" hypothesis with QUAD_STANDARD type of quadrangulation
# @param vertex: vertex of a trilateral geometrical face, around which triangles
# will be created while other elements will be quadrangles.
# Vertex can be either a GEOM_Object or a vertex ID within the
# shape to mesh
# @param UseExisting: if ==true - searches for the existing hypothesis created with
# the same parameters, else (default) - creates a new one
- #
- # @ingroup l3_hypos_additi
+ # @ingroup l3_hypos_quad
def TriangleVertex(self, vertex, UseExisting=0):
- vertexID = vertex
- if isinstance( vertexID, geompyDC.GEOM._objref_GEOM_Object ):
- vertexID = self.mesh.geompyD.GetSubShapeID( self.mesh.geom, vertex )
- hyp = self.Hypothesis("QuadrangleParams", [vertexID], UseExisting = UseExisting,
- CompareMethod=lambda hyp,args: hyp.GetTriaVertex()==args[0])
- hyp.SetTriaVertex( vertexID )
- return hyp
+ return self.QuadrangleParameters(QUAD_STANDARD,vertex,UseExisting)
# Public class: Mesh_Tetrahedron
