Create UI to run IFCDiff tool from Blender

src/ifcblenderexport/blenderbim/__init__.py

@@ -36,6 +36,8 @@ if bpy is not None:
         operator.SelectType,
         operator.SelectFeaturesDir,
         operator.SelectDiffJsonFile,
+        operator.SelectDiffNewFile,
+        operator.SelectDiffOldFile,
         operator.SelectDataDir,
         operator.SelectSchemaDir,
         operator.ExportIFC,
@@ -82,6 +84,7 @@ if bpy is not None:
         operator.GenerateDigitalTwin,
         operator.CreateView,
         operator.ActivateView,
+        operator.ExecuteIfcDiff,
         prop.Subcontext,
         prop.BIMProperties,
         prop.DocProperties,

src/ifcblenderexport/blenderbim/operator.py

@@ -519,6 +519,51 @@ class SelectDiffJsonFile(bpy.types.Operator):
         context.window_manager.fileselect_add(self)
         return {'RUNNING_MODAL'}
 
+
+class SelectDiffOldFile(bpy.types.Operator):
+    bl_idname = "bim.select_diff_old_file"
+    bl_label = "Select Diff Old File"
+    filepath: bpy.props.StringProperty(subtype="FILE_PATH")
+
+    def execute(self, context):
+        bpy.context.scene.BIMProperties.diff_old_file = self.filepath
+        return {'FINISHED'}
+
+    def invoke(self, context, event):
+        context.window_manager.fileselect_add(self)
+        return {'RUNNING_MODAL'}
+
+
+class SelectDiffNewFile(bpy.types.Operator):
+    bl_idname = "bim.select_diff_new_file"
+    bl_label = "Select Diff New File"
+    filepath: bpy.props.StringProperty(subtype="FILE_PATH")
+
+    def execute(self, context):
+        bpy.context.scene.BIMProperties.diff_new_file = self.filepath
+        return {'FINISHED'}
+
+    def invoke(self, context, event):
+        context.window_manager.fileselect_add(self)
+        return {'RUNNING_MODAL'}
+
+
+class ExecuteIfcDiff(bpy.types.Operator):
+    bl_idname = 'bim.execute_ifc_diff'
+    bl_label = 'Execute IFC Diff'
+
+    def execute(self, context):
+        import ifcdiff
+        ifc_diff = ifcdiff.IfcDiff(
+            bpy.context.scene.BIMProperties.diff_old_file,
+            bpy.context.scene.BIMProperties.diff_new_file,
+            bpy.context.scene.BIMProperties.diff_json_file
+        )
+        ifc_diff.diff()
+        ifc_diff.export()
+        return {'FINISHED'}
+
+
 class SelectFeaturesDir(bpy.types.Operator):
     bl_idname = "bim.select_features_dir"
     bl_label = "Select Features Directory"

src/ifcblenderexport/blenderbim/prop.py

@@ -266,6 +266,8 @@ class BIMProperties(PropertyGroup):
     global_id: StringProperty(name="GlobalId")
     features_dir: StringProperty(default='', name="Features Directory")
     diff_json_file: StringProperty(default='', name="Diff JSON File")
+    diff_old_file: StringProperty(default='', name="Diff Old IFC File")
+    diff_new_file: StringProperty(default='', name="Diff New IFC File")
     aggregate_class: EnumProperty(items=getIfcClasses, name="Aggregate Class")
     aggregate_name: StringProperty(name="Aggregate Name")
     classification: EnumProperty(items=getClassifications, name="Classification", update=refreshReferences)

src/ifcblenderexport/blenderbim/ui.py

@@ -456,6 +456,17 @@ class BIM_PT_diff(Panel):
         row.prop(bim_properties, "diff_json_file")
         row.operator("bim.select_diff_json_file", icon="FILE_FOLDER", text="")
 
+        row = layout.row(align=True)
+        row.prop(bim_properties, "diff_old_file")
+        row.operator("bim.select_diff_old_file", icon="FILE_FOLDER", text="")
+
+        row = layout.row(align=True)
+        row.prop(bim_properties, "diff_new_file")
+        row.operator("bim.select_diff_new_file", icon="FILE_FOLDER", text="")
+
+        row = layout.row()
+        row.operator('bim.execute_ifc_diff')
+
 
 class BIM_PT_mvd(Panel):
     bl_label = "Model View Definitions"