Bugfix edge labels (todo: check RectBeam for similar bug)

rocolib/library/SimpleRectBeam.py

 from rocolib.api.components import FoldedComponent
 from rocolib.api.composables.graph.Face import Rectangle
-import rocolib.utils.numsym as np
 
 class SimpleRectBeam(FoldedComponent):
   def define(self):
@@ -14,8 +13,8 @@ class SimpleRectBeam(FoldedComponent):
       self.addEdgeInterface("topedge%d" % i, "r%d.e0" % i, ["width", "depth"][i % 2])
       self.addEdgeInterface("botedge%d" % i, "r%d.e2" % i, ["width", "depth"][i % 2])
       self.addFaceInterface("face%d" % i, "r%d" % i)
-    self.addEdgeInterface("tabedge", "r3.e1", "length")
-    self.addEdgeInterface("slotedge", "r0.e3", "length")
+    self.addEdgeInterface("slotedge", "r3.e1", "length")
+    self.addEdgeInterface("tabedge", "r0.e3", "length")
 
   def assemble(self):
     length = self.getParameter("length")
@@ -34,11 +33,10 @@ class SimpleRectBeam(FoldedComponent):
       fromEdge = 'r%d.e1' % i
       self.setFaceInterface("face%d" % i, "r%d" % i)
 
-    slotEdge = "r0.e3"
-    tabEdge = "r3.e1"
+    tabEdge, slotEdge = "r0.e3", "r3.e1"
 
     if self.getParameter("addTabs"):
-        self.addTab(slotEdge, tabEdge, angle= 90, width=min(10, depth))
+        self.addTab(tabEdge, slotEdge, angle= 90, width=min(10, depth))
 
 if __name__ == "__main__":
   SimpleRectBeam.test()