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# * Copyright (c) 2016 Bernd Hahnebach <bernd@bimstatik.org> *
# * *
# * This file is part of the FreeCAD CAx development system. *
# * *
# * This program is free software; you can redistribute it and/or modify *
# * it under the terms of the GNU Lesser General Public License (LGPL) *
# * as published by the Free Software Foundation; either version 2 of *
# * the License, or (at your option) any later version. *
# * for detail see the LICENCE text file. *
# * *
# * This program is distributed in the hope that it will be useful, *
# * but WITHOUT ANY WARRANTY; without even the implied warranty of *
# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
# * GNU Library General Public License for more details. *
# * *
# * You should have received a copy of the GNU Library General Public *
# * License along with this program; if not, write to the Free Software *
# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
# * USA *
# * *
# ***************************************************************************
__title__ = "FreeCAD FEM mesh gmsh document object"
__author__ = "Bernd Hahnebach"
__url__ = "https://www.freecad.org"
## @package mesh_gmsh
# \ingroup FEM
# \brief mesh gmsh object
from FreeCAD import Base
from . import base_fempythonobject
_PropHelper = base_fempythonobject._PropHelper
class MeshGmsh(base_fempythonobject.BaseFemPythonObject):
"""
A Fem::FemMeshObject python type, add Gmsh specific properties
"""
Type = "Fem::FemMeshGmsh"
def __init__(self, obj):
super().__init__(obj)
for prop in self._get_properties():
prop.add_to_object(obj)
def _get_properties(self):
prop = []
prop.append(
_PropHelper(
type="App::PropertyLinkList",
name="MeshBoundaryLayerList",
group="Base",
doc="Mesh boundaries need inflation layers",
value=[],
)
)
prop.append(
_PropHelper(
type="App::PropertyLinkList",
name="MeshRegionList",
group="Base",
doc="Mesh refinments of the mesh",
value=[],
)
)
prop.append(
_PropHelper(
type="App::PropertyLinkList",
name="MeshGroupList",
group="Base",
doc="Mesh groups of the mesh",
value=[],
)
)
prop.append(
_PropHelper(
type="App::PropertyLength",
name="CharacteristicLengthMax",
group="Mesh Parameters",
doc="Max mesh element size (0.0 means infinity)",
value=0.0, # will be 1e+22
)
)
prop.append(
_PropHelper(
type="App::PropertyLength",
name="CharacteristicLengthMin",
group="Mesh Parameters",
doc="Min mesh element size",
value=0.0,
)
)
prop.append(
_PropHelper(
type="App::PropertyEnumeration",
name="ElementDimension",
group="Mesh Parameters",
doc="Dimension of mesh elements ('From Shape': according ShapeType of part to mesh)",
value=["From Shape", "1D", "2D", "3D"],
)
)
prop.append(
_PropHelper(
type="App::PropertyEnumeration",
name="ElementOrder",
group="Mesh Parameters",
doc="Order of mesh elements",
value=["1st", "2nd"],
)
)
prop.append(
_PropHelper(
type="App::PropertyBool",
name="OptimizeStd",
group="Mesh Parameters",
doc="Optimize tetrahedral elements",
value=True,
)
)
prop.append(
_PropHelper(
type="App::PropertyBool",
name="OptimizeNetgen",
group="Mesh Parameters",
doc="Optimize tetra elements by use of Netgen",
value=False,
)
)
prop.append(
_PropHelper(
type="App::PropertyEnumeration",
name="HighOrderOptimize",
group="Mesh Parameters",
doc="Optimization of high order meshes",
value=[
"None",
"Optimization",
"Elastic+Optimization",
"Elastic",
"Fast curving",
],
)
)
prop.append(
_PropHelper(
type="App::PropertyBool",
name="RecombineAll",
group="Mesh Parameters",
doc="Apply recombination algorithm to all surfaces",
value=False,
)
)
prop.append(
_PropHelper(
type="App::PropertyBool",
name="Recombine3DAll",
group="Mesh Parameters",
doc="Apply recombination algorithm to all volumes",
value=False,
)
)
prop.append(
_PropHelper(
type="App::PropertyEnumeration",
name="RecombinationAlgorithm",
group="Mesh Parameters",
doc="Recombination algorithm",
value=[
"Simple",
"Blossom",
"Simple full-quad",
"Blossom full-quad",
],
)
)
prop.append(
_PropHelper(
type="App::PropertyBool",
name="CoherenceMesh",
group="Mesh Parameters",
doc="Removes all duplicate mesh vertices",
value=True,
)
)
prop.append(
_PropHelper(
type="App::PropertyFloat",
name="GeometryTolerance",
group="Mesh Parameters",
doc="Geometrical Tolerance (0.0 means GMSH std = 1e-08)",
value=1e-06,
)
)
prop.append(
_PropHelper(
type="App::PropertyBool",
name="SecondOrderLinear",
group="Mesh Parameters",
doc="Second order nodes are created by linear interpolation",
value=False,
)
)
prop.append(
_PropHelper(
type="App::PropertyIntegerConstraint",
name="MeshSizeFromCurvature",
group="Mesh Parameters",
doc="Number of elements per 2*pi radians, 0 to deactivate",
value=(12, 0, 10000, 1),
)
)
prop.append(
_PropHelper(
type="App::PropertyEnumeration",
name="Algorithm2D",
group="Mesh Parameters",
doc="Mesh algorithm 2D",
value=[
"Automatic",
"MeshAdapt",
"Delaunay",
"Frontal",
"BAMG",
"DelQuad",
"Packing Parallelograms",
"Quasi-structured Quad",
],
)
)
prop.append(
_PropHelper(
type="App::PropertyEnumeration",
name="Algorithm3D",
group="Mesh Parameters",
doc="Mesh algorithm 3D",
value=[
"Automatic",
"Delaunay",
"New Delaunay",
"Frontal",
"MMG3D",
"R-tree",
"HXT",
],
)
)
prop.append(
_PropHelper(
type="App::PropertyBool",
name="GroupsOfNodes",
group="Mesh Parameters",
doc="For each group create not only the elements but the nodes too",
value=True,
)
)
prop.append(
_PropHelper(
type="App::PropertyEnumeration",
name="SubdivisionAlgorithm",
group="Mesh Parameters",
doc="Mesh subdivision algorithm",
value=["None", "All Quadrangles", "All Hexahedra", "Barycentric"],
)
)
return prop
def onDocumentRestored(self, obj):
# update old project with new properties
for prop in self._get_properties():
try:
obj.getPropertyByName(prop.name)
except Base.PropertyError:
prop.add_to_object(obj)
if prop.name == "Algorithm2D":
# refresh the list of known 2D algorithms for old projects
obj.Algorithm2D = prop.value
elif prop.name == "Algorithm3D":
# refresh the list of known 3D algorithms for old projects
obj.Algorithm3D = prop.value
elif prop.name == "HighOrderOptimize":
# HighOrderOptimize was once App::PropertyBool, so check this
prop.handle_change_type(
obj, "App::PropertyBool", lambda x: "Optimization" if x else "None"
)
# Migrate group of properties for old projects
if obj.getGroupOfProperty(prop.name) == "FEM Gmsh Mesh Params":
obj.setGroupOfProperty(prop.name, "Mesh Parameters")
# migrate old Part property to Shape property
try:
value_part = obj.getPropertyByName("Part")
obj.setPropertyStatus("Part", "-LockDynamic")
obj.removeProperty("Part")
# old object is Fem::FemMeshObjectPython (does not have Shape property with global scope)
prop = _PropHelper(
type="App::PropertyLinkGlobal",
name="Shape",
group="FEM Mesh",
doc="Geometry object, the mesh is made from. The geometry object has to have a Shape.",
value=value_part,
)
prop.add_to_object(obj)
except Base.PropertyError:
pass
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