Split code into separate class files

openscad_py/collection.py

@@ -0,0 +1,26 @@
+
+from typing import Union as TUnion
+from typing import List
+
+from openscad_py.object_ import Object
+
+
+class Collection(Object):
+    """Represents a collection of objects"""
+
+    def __init__(self, coll: list):
+        self.collection = coll
+
+    @classmethod
+    def c(cls, coll: TUnion[list, Object]) -> Object:
+        """Ensure the list of objects is a Collection (idempotent)"""
+        if isinstance(coll, Object):
+            return coll
+        return cls(coll)
+
+    def _add(self, obj):
+        return self.__class__(self.collection + [obj])
+
+    def render(self) -> str:
+        return "\n".join([o.render() for o in self.collection])
+