Add ability to map representations. See #1222.

2026-10-03 21:38:12 +00:00 · 2021-01-27 15:02:34 +11:00
parent f90c56013e
commit c94cac29a5
6 changed files with 97 additions and 0 deletions
@@ -0,0 +1,42 @@
+class Usecase:
+    def __init__(self, file, settings=None):
+        self.file = file
+        self.settings = {
+            "product": None,
+            "representation": None,
+        }
+        self.ifc_vertices = []
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        self.get_mapping_source()
+
+        self.zero = self.file.createIfcCartesianPoint((0.0, 0.0, 0.0))
+        self.x_axis = self.file.createIfcDirection((1.0, 0.0, 0.0))
+        self.y_axis = self.file.createIfcDirection((0.0, 1.0, 0.0))
+        self.z_axis = self.file.createIfcDirection((0.0, 0.0, 1.0))
+        mapping_target = self.file.createIfcCartesianTransformationOperator3D(
+            self.x_axis, self.y_axis, self.zero, 1, self.z_axis
+        )
+        mapped_item = self.file.createIfcMappedItem(self.get_mapping_source(), mapping_target)
+        return self.file.create_entity(
+            "IfcShapeRepresentation",
+            **{
+                "ContextOfItems": self.settings["representation"].ContextOfItems,
+                "RepresentationIdentifier": self.settings["representation"].RepresentationIdentifier,
+                "RepresentationType": "MappedRepresentation",
+                "Items": [mapped_item],
+            }
+        )
+
+    def get_mapping_source(self):
+        if self.settings["representation"].RepresentationMap:
+            return self.settings["representation"].RepresentationMap[0]
+        return self.file.create_entity(
+            "IfcRepresentationMap",
+            **{
+                "MappingOrigin": self.file.createIfcAxis2Placement3D(zero, z_axis, x_axis),
+                "MappedRepresentation": self.settings["representation"],
+            }
+        )