Split code into separate class files

openscad_py/header.py

@@ -0,0 +1,23 @@
+
+from typing import Union as TUnion
+from typing import List
+
+
+class Header:
+    """Render a header (setting global values) of an OpensCAD file"""
+
+
+    def __init__(self, quality: str = 'draft'):
+        self.quality = quality
+
+
+    def render(self):
+        # See https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Other_Language_Features#Circle_resolution:_$fa,_$fs,_and_$fn
+        if self.quality == 'draft':
+            return ""
+        if self.quality == 'mid':
+            return "$fa=12;$fs=0.2;"
+        if self.quality == 'best':
+            return "$fa=6;$fs=0.1;"
+        raise ValueError("Unknown quality")
+