You can now flip clipping planes

src/blenderbim/blenderbim/bim/module/project/__init__.py

@@ -33,6 +33,7 @@ classes = (
     operator.EnableCulling,
     operator.EnableEditingHeader,
     operator.ExportIFC,
+    operator.FlipClippingPlane,
     operator.ImportIFC,
     operator.LinkIfc,
     operator.LoadLink,

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

@@ -37,6 +37,7 @@ from blenderbim.bim.ifc import IfcStore
 from blenderbim.bim.ui import IFCFileSelector
 from blenderbim.bim import import_ifc
 from blenderbim.bim import export_ifc
+from math import radians
 from pathlib import Path
 from mathutils import Vector, Matrix
 from bpy.app.handlers import persistent
@@ -1876,3 +1877,20 @@ class CreateClippingPlane(bpy.types.Operator):
         self.mouse_x = event.mouse_region_x
         self.mouse_y = event.mouse_region_y
         return self.execute(context)
+
+
+class FlipClippingPlane(bpy.types.Operator):
+    bl_idname = "bim.flip_clipping_plane"
+    bl_label = "Flip Clipping Plane"
+    bl_options = {"REGISTER", "UNDO"}
+
+    @classmethod
+    def poll(cls, context):
+        return context.area.type == "VIEW_3D"
+
+    def execute(self, context):
+        obj = bpy.context.active_object
+        if obj in [cp.obj for cp in bpy.context.scene.BIMProjectProperties.clipping_planes]:
+            obj.rotation_euler[0] += radians(180)
+            bpy.context.view_layer.update()
+        return {"FINISHED"}

src/blenderbim/blenderbim/bim/module/project/workspace.py

@@ -33,6 +33,7 @@ class QueryTool(bpy.types.WorkSpaceTool):
     bl_keymap = (
         ("bim.query_linked_element", {"type": "RIGHTMOUSE", "value": "PRESS"}, None),
         ("bim.query_hotkey", {"type": "C", "value": "PRESS", "shift": True}, {"properties": [("hotkey", "S_C")]}),
+        ("bim.query_hotkey", {"type": "F", "value": "PRESS", "shift": True}, {"properties": [("hotkey", "S_F")]}),
         ("bim.query_hotkey", {"type": "C", "value": "PRESS", "alt": True}, {"properties": [("hotkey", "A_C")]}),
     )
 
@@ -43,6 +44,9 @@ class QueryTool(bpy.types.WorkSpaceTool):
         row.label(text="", icon="EVENT_SHIFT")
         row.label(text="Add Clipping Plane", icon="EVENT_C")
         row = layout.row(align=True)
+        row.label(text="", icon="EVENT_SHIFT")
+        row.label(text="Flip Clipping Plane", icon="EVENT_F")
+        row = layout.row(align=True)
         row.label(text="", icon="EVENT_ALT")
         row.label(text="Disable Culling" if LinksData.enable_culling else "Enable Culling", icon="EVENT_C")
 
@@ -65,6 +69,9 @@ class QueryHotkey(bpy.types.Operator):
     def hotkey_S_C(self):
         bpy.ops.bim.create_clipping_plane("INVOKE_DEFAULT")
 
+    def hotkey_S_F(self):
+        bpy.ops.bim.flip_clipping_plane("INVOKE_DEFAULT")
+
     def hotkey_A_C(self):
         if LinksData.enable_culling:
             bpy.ops.bim.disable_culling()