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

src/ifcpatch/recipes/ResetAbsoluteCoordinates.py

@@ -0,0 +1,26 @@
+class Patcher:
+    def __init__(self, file, logger):
+        self.file = file
+        self.logger = logger
+
+    def patch(self):
+        # 12D can have some funky coordinates out of any sensible range. This
+        # method will not work all the time, but will catch most issues.
+        offset_point = None
+        for point in self.file.by_type('IfcCartesianPoint'):
+            if len(point.Coordinates) == 2 or not self.is_point_far_away(point):
+                continue
+            if not offset_point:
+                offset_point = (point.Coordinates[0], point.Coordinates[1], point.Coordinates[2])
+                self.logger.info(f'Resetting absolute coordinates by {point}')
+            point.Coordinates = (
+                point.Coordinates[0] - offset_point[0],
+                point.Coordinates[1] - offset_point[1],
+                point.Coordinates[2] - offset_point[2]
+            )
+
+    def is_point_far_away(self, point):
+        # Arbitrary threshold based on experience
+        return abs(point.Coordinates[0]) > 1000000 \
+            or abs(point.Coordinates[1]) > 1000000 \
+            or abs(point.Coordinates[2]) > 1000000