Prioritise editing rendering surface styles over shading surface styles

src/ifcopenshell-python/ifcopenshell/api/style/add_surface_style.py

@@ -0,0 +1,27 @@
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {"style": None, "ifc_class": "IfcSurfaceStyleRendering", "attributes": {}}
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        for key, value in self.settings["attributes"].items():
+            if key == "SurfaceColour" and value:
+                self.settings["attributes"][key] = self.create_colour_rgb(value)
+            if key == "DiffuseColour" and isinstance(value, dict):
+                self.settings["attributes"][key] = self.create_colour_rgb(value)
+
+        style_item = self.file.create_entity(self.settings["ifc_class"], **self.settings["attributes"])
+        styles = list(self.settings["style"].Styles or [])
+
+        duplicate_items = [s for s in styles if s.is_a(self.settings["ifc_class"])]
+        for duplicate_item in duplicate_items:
+            self.file.remove(duplicate_item)
+
+        styles.append(style_item)
+        self.settings["style"].Styles = styles
+        return style_item
+
+    def create_colour_rgb(self, value):
+        return self.file.createIfcColourRgb(value["Name"], value["Red"], value["Green"], value["Blue"])