Fix wiper position when potentiometer scaled #142

lcapy/schematics/components/cpt.py

@@ -337,6 +337,14 @@ def size(self):
             val = self.default_width
         return float(val) * self.shape_scale
 
+    @property
+    def width(self):
+        return self.w * self.size * self.sch.node_spacing
+
+    @property
+    def height(self):
+        return self.h * self.size * self.sch.node_spacing
+
     @property
     def scale(self):
         return float(self.opts.get('scale', 1.0))

lcapy/schematics/components/shape.py

@@ -16,14 +16,6 @@ class Shape(FixedCpt):
                  'tl': ('l', -0.5, 0.5),
                  'tr': ('r', 0.5, 0.5)}
 
-    @property
-    def width(self):
-        return self.w * self.size * self.sch.node_spacing
-
-    @property
-    def height(self):
-        return self.h * self.size * self.sch.node_spacing
-
     def pinpos_rotate(self, pinpos, angle):
         """Rotate pinpos by multiple of 90 degrees.  pinpos is either 'l',
         't', 'r', 'b'."""

lcapy/schemcpts.py

@@ -718,14 +718,16 @@ class Potentiometer(Bipole):
     """Potentiometer  Np, Nm, No"""
 
     # This is not really a bipole but circuitikz treats it as such
+    # Note, the wiper position is not scaled if the component
+    # is stretched or scaled.
 
     can_stretch = False
 
     node_pinnames = ('p', 'n', 'wiper')
     aliases = {'+': 'p', '-': 'n'}
-    pins = {'p': ('rx', 0, 0),
-            'n': ('rx', 1, 0),
-            'wiper': ('lx', 0.5, 0.3)}
+    pins = {'p': ('rx', -0.5, 0),
+            'n': ('rx', 0.5, 0),
+            'wiper': ('l', 0.0, 0.3)}
 
 
 class VCS(Bipole):