split material assign/unassign operators into tool and core

src/blenderbim/blenderbim/bim/module/material/operator.py

@@ -174,67 +174,7 @@ class AssignMaterial(bpy.types.Operator, tool.Ifc.Operator):
 
     def _execute(self, context):
         objects = [bpy.data.objects.get(self.obj)] if self.obj else tool.Blender.get_selected_objects()
-        active_obj = context.active_object
-        active_object_material_type = self.material_type or active_obj.BIMObjectMaterialProperties.material_type
-        material = tool.Ifc.get().by_id(int(active_obj.BIMObjectMaterialProperties.material))
-        for obj in objects:
-            element = tool.Ifc.get_entity(obj)
-            if not element:
-                continue
-            ifcopenshell.api.run(
-                "material.assign_material",
-                tool.Ifc.get(),
-                product=element,
-                type=active_object_material_type,
-                material=material,
-            )
-            assigned_material = ifcopenshell.util.element.get_material(element)
-            if assigned_material.is_a("IfcMaterialConstituentSet"):
-                if not assigned_material.MaterialConstituents:
-                    ifcopenshell.api.run(
-                        "material.add_constituent",
-                        tool.Ifc.get(),
-                        constituent_set=assigned_material,
-                        material=material,
-                    )
-            elif assigned_material.is_a() == "IfcMaterialLayerSet":
-                if not assigned_material.MaterialLayers:
-                    unit_scale = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
-                    layer = ifcopenshell.api.run(
-                        "material.add_layer",
-                        tool.Ifc.get(),
-                        layer_set=assigned_material,
-                        material=material,
-                    )
-                    thickness = 0.1  # Arbitrary metric thickness for now
-                    layer.LayerThickness = thickness / unit_scale
-            elif assigned_material.is_a("IfcMaterialProfileSet"):
-                if not assigned_material.MaterialProfiles:
-                    named_profiles = [p for p in tool.Ifc.get().by_type("IfcProfileDef") if p.ProfileName]
-                    if named_profiles:
-                        profile = named_profiles[0]
-                    else:
-                        unit_scale = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
-                        size = 0.5 / unit_scale
-                        profile = tool.Ifc.get().create_entity(
-                            "IfcRectangleProfileDef",
-                            ProfileName="New Profile",
-                            ProfileType="AREA",
-                            XDim=size,
-                            YDim=size,
-                        )
-                        material_profile = ifcopenshell.api.run(
-                            "material.add_profile",
-                            tool.Ifc.get(),
-                            profile_set=assigned_material,
-                            material=tool.Ifc.get().by_type("IfcMaterial")[0],
-                        )
-                        ifcopenshell.api.run(
-                            "material.assign_profile",
-                            tool.Ifc.get(),
-                            material_profile=material_profile,
-                            profile=profile,
-                        )
+        core.assign_material(tool.Ifc, tool.Material, material_type= self.material_type , objects=objects )
 
 
 class UnassignMaterial(bpy.types.Operator, tool.Ifc.Operator):
@@ -245,20 +185,7 @@ class UnassignMaterial(bpy.types.Operator, tool.Ifc.Operator):
 
     def _execute(self, context):
         objects = [bpy.data.objects.get(self.obj)] if self.obj else tool.Blender.get_selected_objects()
-        for obj in objects:
-            element = tool.Ifc.get_entity(obj)
-            if element:
-                material = ifcopenshell.util.element.get_material(element, should_inherit=False)
-                inherited_material = ifcopenshell.util.element.get_material(element, should_inherit=True)
-                print(material, inherited_material)
-                if material and "Usage" in material.is_a():
-                    element_type = ifcopenshell.util.element.get_type(element)
-                    ifcopenshell.api.run("material.unassign_material", tool.Ifc.get(), product=element_type)
-                elif not material and inherited_material:
-                    element_type = ifcopenshell.util.element.get_type(element)
-                    ifcopenshell.api.run("material.unassign_material", tool.Ifc.get(), product=element_type)
-                elif material:
-                    ifcopenshell.api.run("material.unassign_material", tool.Ifc.get(), product=element)
+        core.unassign_material(tool.Ifc, tool.Material, objects=objects )
 
 
 class AddConstituent(bpy.types.Operator, tool.Ifc.Operator):

src/blenderbim/blenderbim/core/material.py

@@ -90,3 +90,32 @@ def edit_material(ifc, material_tool, material):
 
 def disable_editing_material(material_tool):
     material_tool.disable_editing_material()
+
+
+def assign_material(ifc, material_tool, material_type, objects):
+    material_type = material_type or material_tool.get_active_object_material()
+    material = material_tool.get_active_material()
+    for obj in objects:
+        element = ifc.get_entity(obj)
+        if not element:
+            continue
+        ifc.run("material.assign_material", product=element, type=material_type, material=material)
+        assigned_material = material_tool.get_material(element)
+        if material_tool.is_a_material_set(assigned_material):
+            material_tool.add_material_to_set(material_set=assigned_material, material=material)
+
+
+def unassign_material(ifc, material_tool, objects):
+    for obj in objects:
+        element = ifc.get_entity(obj)
+        if element:
+            material = material_tool.get_material(element, should_inherit=False)
+            inherited_material = material_tool.get_material(element, should_inherit=True)
+            if material and "Usage" in material.is_a():
+                element_type = material_tool.get_type(element)
+                ifc.run("material.unassign_material", product=element_type)
+            elif not material and inherited_material:
+                element_type = material_tool.get_type(element)
+                ifc.run("material.unassign_material", product=element_type)
+            elif material:
+                ifc.run("material.unassign_material", product=element)

src/blenderbim/blenderbim/core/tool.py

@@ -433,17 +433,22 @@ class Loader:
 @interface
 class Material:
     def add_default_material_object(cls): pass
+    def add_material_to_set(cls, material_set, material): pass
     def delete_object(cls, obj): pass
     def disable_editing_material(cls): pass
     def disable_editing_materials(cls): pass
     def enable_editing_material(cls, material): pass
     def enable_editing_materials(cls): pass
     def get_active_material_type(cls): pass
-    def get_active_material_type(cls): pass
+    def get_active_material(cls): pass
+    def get_active_object_material(cls, obj): pass
     def get_elements_by_material(cls, material): pass
     def get_material_attributes(cls): pass
+    def get_material(cls, element, should_inherit): pass
     def get_name(cls, obj): pass
+    def get_type(cls, element): pass
     def import_material_definitions(cls, material_type): pass
+    def is_a_material_set(cls, material): pass
     def is_editing_materials(cls): pass
     def is_material_used_in_sets(cls, material): pass
     def load_material_attributes(cls, material): pass

src/blenderbim/blenderbim/tool/material.py

@@ -21,6 +21,8 @@ import ifcopenshell
 import blenderbim.core.tool
 import blenderbim.tool as tool
 import blenderbim.bim.helper
+import ifcopenshell.util.unit
+import ifcopenshell.util.element
 
 
 class Material(blenderbim.core.tool.Material):
@@ -101,10 +103,6 @@ class Material(blenderbim.core.tool.Material):
                 return True
         return False
 
-    @classmethod
-    def get_active_material_type(cls):
-        return bpy.context.scene.BIMMaterialProperties.material_type
-
     @classmethod
     def load_material_attributes(cls, material):
         props = bpy.context.scene.BIMMaterialProperties
@@ -115,7 +113,7 @@ class Material(blenderbim.core.tool.Material):
     def enable_editing_material(cls, material):
         props = bpy.context.scene.BIMMaterialProperties
         props.active_material_id = material.id()
-        props.editing_material_type = "ATTRIBUTES" 
+        props.editing_material_type = "ATTRIBUTES"
 
     @classmethod
     def get_material_attributes(cls):
@@ -126,3 +124,72 @@ class Material(blenderbim.core.tool.Material):
         props = bpy.context.scene.BIMMaterialProperties
         props.active_material_id = 0
         props.editing_material_type = ""
+
+    @classmethod
+    def get_type(cls, element):
+        return ifcopenshell.util.element.get_type(element)
+
+    @classmethod
+    def get_active_object_material(cls):
+        active_obj = bpy.context.active_object
+        if not active_obj:
+            return
+        return active_obj.BIMObjectMaterialProperties.material_type
+
+    @classmethod
+    def get_active_material(cls):
+        return tool.Ifc.get().by_id(int(bpy.context.active_object.BIMObjectMaterialProperties.material))
+
+    @classmethod
+    def get_material(cls, element, should_inherit=False):
+        return ifcopenshell.util.element.get_material(element, should_inherit=should_inherit)
+
+    @classmethod
+    def is_a_material_set(cls, material):
+        return material.is_a() in [
+            "IfcMaterialProfile",
+            "IfcMaterialLayer",
+            "IfcMaterialConstituent",
+            "IfcMaterialList",
+        ]
+
+    @classmethod
+    def add_material_to_set(cls, material_set, material):
+        if material_set.is_a("IfcMaterialConstituentSet"):
+            if not material_set.MaterialConstituents:
+                tool.Ifc.run(
+                    "material.add_constituent",
+                    constituent_set=material_set,
+                    material=material,
+                )
+        elif material_set.is_a() == "IfcMaterialLayerSet":
+            if not material_set.MaterialLayers:
+                unit_scale = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
+                layer = tool.Ifc.run(
+                    "material.add_layer",
+                    layer_set=material_set,
+                    material=material,
+                )
+                thickness = 0.1  # Arbitrary metric thickness for now
+                layer.LayerThickness = thickness / unit_scale
+        elif material_set.is_a("IfcMaterialProfileSet"):
+            if not material_set.MaterialProfiles:
+                named_profiles = [p for p in tool.Ifc.get().by_type("IfcProfileDef") if p.ProfileName]
+                if named_profiles:
+                    profile = named_profiles[0]
+                else:
+                    unit_scale = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
+                    size = 0.5 / unit_scale
+                    profile = tool.Ifc.get().create_entity(
+                        "IfcRectangleProfileDef",
+                        ProfileName="New Profile",
+                        ProfileType="AREA",
+                        XDim=size,
+                        YDim=size,
+                    )
+                    material_profile = ifcopenshell.api.run(
+                        "material.add_profile",
+                        profile_set=material_set,
+                        material=material,
+                        profile=profile,
+                    )