Added methods to quickly generate common series

LabelGenerator.py

@@ -117,6 +117,11 @@ def __init__(
     num_stickers_vertical=8,
 )
 
+E12 = [ 1.0, 1.2, 1.5, 1.8, 2.2, 2.7, 3.3, 3.9, 4.7, 5.6, 6.8, 8.2 ]
+
+# 1.1, 1.3, and 1.6 are commonly ommitted from the resistor E24 series
+E24 = [ 1.0, 1.2, 1.5, 1.8, 2.0, 2.2, 2.4, 2.7, 3.0, 3.3, 3.6, 3.9, 4.3, 4.7, 5.1, 5.6, 6.2, 6.8, 7.5, 8.2, 9.1]
+E24_ALL = [ 1.0, 1.1, 1.2, 1.3, 1.5, 1.6, 1.8, 2.0, 2.2, 2.4, 2.7, 3.0, 3.3, 3.6, 3.9, 4.3, 4.7, 5.1, 5.6, 6.2, 6.8, 7.5, 8.2, 9.1 ]
 
 class StickerRect:
     def __init__(self, c: Canvas, layout: PaperConfig, row: int, column: int, mirror: bool):
@@ -602,6 +607,19 @@ def render_outlines(c: Canvas, layout: PaperConfig) -> None:
                 c.setLineWidth(0)
                 c.roundRect(rect.left, rect.bottom, rect.width, rect.height, rect.corner)
 
+def generate_decade(
+        series: List[float], # the base series of resistor values
+        power: int           # the power of 10 to scale the series by
+) -> List[float]:
+    scalar = 10 ** power
+    return [scalar * x for x in series]
+
+def generate_decades(
+        series: List[float],
+        first_decade: int,
+        last_decade: int
+) -> ResistorList:
+    return [generate_decade(series, x) for x in range(first_decade, last_decade)]
 
 def main() -> None:
 
@@ -632,6 +650,12 @@ def main() -> None:
         [9100000000,   9200000000,   3300000000],
     ]
 
+    # ############################################################################
+    # Alternatively, The E12, E24, and E24_ALL constants can be passed to the 
+    # generate_decades function to create typical resistor value sets.
+    # ############################################################################
+    # resistor_values: ResistorList = [ 0, 0.01 ] + generate_decades(E24, 0, 6)
+
     # ############################################################################
     # Further configuration options
     #