fix aspect ratio of hex grid

Making a Wargame.ipynb

@@ -565,6 +565,15 @@
     "                size_hint: 1, .33\n"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "collapsed": true
+   },
+   "outputs": [],
+   "source": []
+  },
   {
    "cell_type": "code",
    "execution_count": null,

main.py

@@ -48,12 +48,10 @@ class StrategyGame(FloatLayout):
 
 
 class HexMapCell(label.Label):
+
     def __init__(self, row=0, col=0, **kwargs):
         self.region_in_map = MapCoords(row, col)
         super(HexMapCell, self).__init__(**kwargs)
-        self.size_hint = (1,None)
-        self.height = self.width / math.sqrt(3)
-
 
 class BU(HexMapCell):
     pass

strategygame.kv

@@ -1,10 +1,10 @@
-
+#:import math math
 #:include debug.kv
 
 <StrategyGame>:
     id: _game
     main_map: _main_map
-    map_rows: 10
+    map_rows: 30
     map_cols: 10
     BoxLayout:
         orientation: 'horizontal'
@@ -23,6 +23,7 @@
                 text: 'mini-map'
                 size_hint: 1, .33
 
+
 <BU>:
     canvas:
         Color:
@@ -51,3 +52,7 @@
         Line:
             points: (self.right, self.y, self.right, self.top)
             width: 2
+
+<HexMapCell>:
+    size_hint: 1, None
+    height: self.width / math.sqrt(3)