FEM: oofem writer, write fixed constraints

src/Mod/Fem/femsolver/oofem/tasks.py

@@ -182,7 +182,7 @@ def __init__(self, analysis):
 
         self.constraints_contact = []
         self.constraints_displacement = self.get_several_member('Fem::ConstraintDisplacement')
-        self.constraints_fixed = []
+        self.constraints_fixed = self.get_several_member('Fem::ConstraintFixed')
         self.constraints_force = self.get_several_member('Fem::ConstraintForce')
         self.constraints_heatflux = []
         self.constraints_initialtemperature = []

src/Mod/Fem/femsolver/oofem/writer.py

@@ -354,7 +354,7 @@ def write_components_size_record(self, f):
         self.force_objects = tmp_list
         # count bcs
         bc_count = 0
-        all_bcs = self.displacement_objects + self.force_objects
+        all_bcs = self.displacement_objects + self.fixed_objects + self.force_objects
         for femobj in all_bcs:  # femobj --> dict, FreeCAD document object is femobj['Object']
             bc_count += 1
             femobj['bc_number'] = bc_count
@@ -565,6 +565,42 @@ def write_boundary_condition_record(self, f):
             )
             f.write(line_all)
 
+        # separator line
+        if self.write_comments is True:
+            f.write('#\n')
+
+        # fixed constraints
+        # get nodes of fixed constraints
+        self.get_constraints_fixed_nodes()
+
+        # write fixed constraints
+        if self.write_comments is True:
+            f.write('# FreeCAD fixed constraints\n')
+        for femobj in self.fixed_objects:  # femobj --> dict, FreeCAD document object is femobj['Object']
+
+            # beginn and bc number
+            line_begin = 'BoundaryCondition {0}  loadTimeFunction 1'.format(femobj['bc_number'])
+
+            # dofs and values
+            if self.domain == '2dPlaneStress':
+                line_dofs = 'dofs 2 1 2'
+                line_values = 'values 2 0 0'
+            elif self.domain == '3d':
+                line_dofs = 'dofs 3 1 2 3'
+                line_values = 'values 3 0 0 0'
+
+            # set
+            line_set = 'set {0}'.format(femobj['bc_number'] + self.cs_count)
+
+            # build  and write line
+            line_all = (
+                line_begin + '  '
+                + line_dofs + '  '
+                + line_values + '  '
+                + line_set + '\n'
+            )
+            f.write(line_all)
+
     def write_nodal_load_record(self, f):
         if self.write_comments is True:
             f.write('#\n')
@@ -673,6 +709,15 @@ def write_set_record(self, f):
             line_nodes = line_nodes.rstrip()  # remove white space at the end
             f.write(line_start + '  ' + line_nodes + '\n')
 
+        # bc fixed constraints sets
+        for femobj in self.fixed_objects:  # femobj --> dict, FreeCAD document object is femobj['Object']
+            line_start = 'Set {0}  nodes {1}'.format((femobj['bc_number'] + self.cs_count), len(femobj['Nodes']))
+            line_nodes = ''  # init
+            for n in femobj['Nodes']:
+                line_nodes = line_nodes + str(n) + ' '
+            line_nodes = line_nodes.rstrip()  # remove white space at the end
+            f.write(line_start + '  ' + line_nodes + '\n')
+
         # node load sets
         for femobj in self.force_objects:  # femobj --> dict, FreeCAD document object is femobj['Object']
             line_start = 'Set {0}  nodes {1}'.format((femobj['bc_number'] + self.cs_count), len(femobj['Nodes']))