From 4baa99bcf568f91ffe9ce961e86185cf42a75a4b Mon Sep 17 00:00:00 2001
From: Marius Peter <blendoit@gmail.com>
Date: Sun, 9 Jun 2019 11:50:49 -0700
Subject: class Stringer

---
 creator.py | 16 ++++++----------
 main.py    | 12 +++++++++++-
 2 files changed, 17 insertions(+), 11 deletions(-)

diff --git a/creator.py b/creator.py
index b1a58a9..953f088 100644
--- a/creator.py
+++ b/creator.py
@@ -236,7 +236,7 @@ class Airfoil(Coordinates):
 
 
 class Spar(Coordinates):
-    """Contains a single spar's location and material."""
+    """Contains a single spar's location."""
     global parent
 
     def __init__(self):
@@ -275,17 +275,13 @@ class Spar(Coordinates):
 
 
 class Stringer():
-    """Contains the coordinates of stringer(s) location and material."""
+    """Contains the coordinates of stringer(s)."""
+    global parent
 
     def __init__(self):
-        # Stringer attributes
-        self.stringer_x_u = []
-        self.stringer_y_u = []
-        self.stringer_x_l = []
-        self.stringer_y_l = []
-        self.stringer_mat = []
-
-    def add_stringers(self, *density):
+        super().__init__(parent.chord, parent.semi_span)
+
+    def add_stringer(self, *density):
         """
         Add stringers to the wing from their distribution density between spars.
         First half of density[] concerns stringer distribution on
diff --git a/main.py b/main.py
index f62a88a..4bbd7a9 100644
--- a/main.py
+++ b/main.py
@@ -38,6 +38,7 @@ def main():
         af.naca(2412)
         # Print coordinates of af to terminal
         af.print_coord(4)
+
         # Create spar instance
         af.spar = creator.Spar()
         # Define the spar coordinates
@@ -45,8 +46,17 @@ def main():
         af.spar.add_spar(af.coordinates, 0.55)
         # Print coordinates of af.spar to terminal
         af.spar.print_coord(4)
+
+        # Create stringer instance
+        af.stringer = creator.Stringer()
+        # Define the stringer coordinates
+        af.stringer.add_stringer(af.coordinates, 0.15)
+        af.stringer.add_stringer(af.coordinates, 0.55)
+        # Print coordinates of af.stringer to terminal
+        af.stringer.print_coord(4)
+
         # Plot components with matplotlib
-        creator.plot(af, af.spar)
+        creator.plot(af, af.spar, af.stringer)
 
         # Save component coordinates
         af.save_coord(SAVE_PATH)
-- 
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