New fancy UI for material layer set management

src/ifcblenderexport/blenderbim/bim/__init__.py

@@ -68,6 +68,9 @@
         operator.RemoveQto,
         operator.AddMaterialPset,
         operator.RemoveMaterialPset,
+        operator.AddMaterialLayer,
+        operator.RemoveMaterialLayer,
+        operator.MoveMaterialLayer,
         operator.AddConstraint,
         operator.RemoveConstraint,
         operator.AssignConstraint,
@@ -205,6 +208,7 @@
         operator.GetRepresentationIfcParameters,
         operator.UpdateIfcRepresentation,
         prop.StrProperty,
+        prop.MaterialLayer,
         prop.Variable,
         prop.Role,
         prop.Address,
@@ -278,6 +282,7 @@
         ui.BIM_PT_material,
         ui.BIM_PT_mesh,
         ui.BIM_PT_object,
+        ui.BIM_PT_object_material,
         ui.BIM_PT_object_psets,
         ui.BIM_PT_object_qto,
         ui.BIM_PT_representations,

src/ifcblenderexport/blenderbim/bim/operator.py

@@ -4096,6 +4096,44 @@ def execute(self, context):
         return {"FINISHED"}
 
 
+class AddMaterialLayer(bpy.types.Operator):
+    bl_idname = "bim.add_material_layer"
+    bl_label = "Add Material Layer"
+
+    def execute(self, context):
+        new = bpy.context.active_object.BIMObjectProperties.material_layers.add()
+        new.material = bpy.data.materials[0]
+        new.name = "Material Layer"
+        return {"FINISHED"}
+
+
+class RemoveMaterialLayer(bpy.types.Operator):
+    bl_idname = "bim.remove_material_layer"
+    bl_label = "Remove Material Layer"
+    index: bpy.props.IntProperty()
+
+    def execute(self, context):
+        bpy.context.active_object.BIMObjectProperties.material_layers.remove(self.index)
+        return {"FINISHED"}
+
+
+class MoveMaterialLayer(bpy.types.Operator):
+    bl_idname = "bim.move_material_layer"
+    bl_label = "Move Material Layer"
+    direction: bpy.props.StringProperty()
+
+    def execute(self, context):
+        props = bpy.context.active_object.BIMObjectProperties
+        index = props.active_material_layer_index
+        if self.direction == "UP" and index - 1 >= 0:
+            props.material_layers.move(index, index - 1)
+            props.active_material_layer_index = index - 1
+        elif self.direction == "DOWN" and index + 1 < len(props.material_layers):
+            props.material_layers.move(index, index + 1)
+            props.active_material_layer_index = index + 1
+        return {"FINISHED"}
+
+
 class SelectScheduleFile(bpy.types.Operator):
     bl_idname = "bim.select_schedule_file"
     bl_label = "Select Documentation IFC File"

src/ifcblenderexport/blenderbim/bim/prop.py

@@ -547,6 +547,34 @@ class Subcontext(PropertyGroup):
     target_view: StringProperty(name="Target View")
 
 
+class MaterialLayer(PropertyGroup):
+    name: StringProperty(name="Name")
+    material: PointerProperty(name="Material", type=bpy.types.Material)
+    layer_thickness: FloatProperty(name="Layer Thickness")
+    is_ventilated: EnumProperty(
+        items=[
+            ("TRUE", "True", "Is an air gap and provides air exchange from the layer to outside air"),
+            ("FALSE", "False", "Is a solid material layer"),
+            ("UNKNOWN", "Unknown", "Is an air gap but does not provide air exchange or not known"),
+        ],
+        name="Is Ventilated",
+        default="FALSE",
+    )
+    description: StringProperty(name="Description")
+    category: EnumProperty(
+        items=[
+            ("LoadBearing", "Load Bearing", ""),
+            ("Insulation", "Insulation", ""),
+            ("Finish", "Finish", ""),
+            ("Custom", "Custom", ""),
+        ],
+        name="Category",
+        default="LoadBearing",
+    )
+    custom_category: StringProperty(name="Custom Category")
+    priority: IntProperty(name="Priority")
+
+
 class Drawing(PropertyGroup):
     name: StringProperty(name="Name", update=updateDrawingName)
     camera: PointerProperty(name="Camera", type=bpy.types.Object)
@@ -1603,6 +1631,9 @@ class BIMObjectProperties(PropertyGroup):
     active_constraint_index: IntProperty(name="Active Constraint Index")
     classifications: CollectionProperty(name="Classifications", type=ClassificationReference)
     material_type: EnumProperty(items=getMaterialTypes, name="Material Type")
+    material: PointerProperty(name="Material", type=bpy.types.Material)
+    material_layers: CollectionProperty(name="Material Layers", type=MaterialLayer)
+    active_material_layer_index: IntProperty(name="Active Material Layer Index")
     pset_name: EnumProperty(items=getPsetNames, name="Pset Name")
     qto_name: EnumProperty(items=getQtoNames, name="Qto Name")
     has_boundary_condition: BoolProperty(name="Has Boundary Condition")

src/ifcblenderexport/blenderbim/bim/ui.py

@@ -76,9 +76,6 @@ def draw(self, context):
         row = layout.row()
         row.prop(props, "relating_structure")
 
-        row = layout.row()
-        row.prop(props, "material_type")
-
     def draw_addresses_ui(self):
         layout = self.layout
         layout.label(text="Address:")
@@ -107,6 +104,58 @@ def draw_addresses_ui(self):
         row.prop(address, "country")
 
 
+class BIM_PT_object_material(Panel):
+    bl_label = "IFC Object Material"
+    bl_idname = "BIM_PT_object_material"
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
+    bl_context = "object"
+
+    @classmethod
+    def poll(cls, context):
+        return context.active_object is not None and hasattr(context.active_object, "BIMObjectProperties")
+
+    def draw(self, context):
+        if context.active_object is None:
+            return
+        layout = self.layout
+        props = context.active_object.BIMObjectProperties
+        row = layout.row()
+        row.prop(props, "material_type")
+
+        if props.material_type == "IfcMaterial":
+            row = layout.row()
+            row.prop(props, "material")
+        elif props.material_type == "IfcMaterialLayerSet":
+            row = layout.row()
+            row.template_list(
+                "MATERIAL_UL_matslots", "", props, "material_layers", props, "active_material_layer_index"
+            )
+            col = row.column(align=True)
+            col.operator("bim.add_material_layer", icon="ADD", text="")
+            col.operator("bim.remove_material_layer", icon="REMOVE", text="").index = props.active_material_layer_index
+            col.operator("bim.move_material_layer", icon="TRIA_UP", text="").direction = "UP"
+            col.operator("bim.move_material_layer", icon="TRIA_DOWN", text="").direction = "DOWN"
+
+            if props.active_material_layer_index < len(props.material_layers):
+                material = props.material_layers[props.active_material_layer_index]
+                row = layout.row()
+                row.prop(material, "material")
+                row = layout.row()
+                row.prop(material, "name")
+                row = layout.row()
+                row.prop(material, "description")
+                row = layout.row()
+                row.prop(material, "category")
+                if material.category == "Custom":
+                    row = layout.row()
+                    row.prop(material, "custom_category")
+                row = layout.row()
+                row.prop(material, "layer_thickness")
+                row = layout.row()
+                row.prop(material, "priority")
+
+
 class BIM_PT_object_psets(Panel):
     bl_label = "IFC Object Property Sets"
     bl_idname = "BIM_PT_object_psets"