New IFCPatch tool, which can "patch" an IFC, including adjusting coordinates and elevations.

src/ifcpatch/recipes/ResetSpatialElementLocations.py

@@ -0,0 +1,30 @@
+class Patcher:
+    def __init__(self, file, logger, args=None):
+        self.file = file
+        self.logger = logger
+        self.args = args
+
+    def patch(self):
+        project = self.file.by_type('IfcProject')[0]
+        spatial_elements = self.find_decomposed_ifc_class(project, self.args[0])
+        for spatial_element in spatial_elements:
+            self.patch_placement_to_origin(spatial_element)
+
+    def find_decomposed_ifc_class(self, element, ifc_class):
+        results = []
+        rel_aggregates = element.IsDecomposedBy
+        if not rel_aggregates:
+            return results
+        for rel_aggregate in rel_aggregates:
+            for part in rel_aggregate.RelatedObjects:
+                if part.is_a(ifc_class):
+                    results.append(part)
+                results.extend(self.find_decomposed_ifc_class(part, ifc_class))
+        return results
+
+    def patch_placement_to_origin(self, element):
+        element.ObjectPlacement.RelativePlacement.Location.Coordinates = (0., 0., 0.)
+        if element.ObjectPlacement.RelativePlacement.Axis:
+            element.ObjectPlacement.RelativePlacement.Axis.DirectionRatios = (0., 0., 1.)
+        if element.ObjectPlacement.RelativePlacement.RefDirection:
+            element.ObjectPlacement.RelativePlacement.RefDirection.DirectionRatios = (1., 0., 0.)