detect humbucking or split mode

diylc/diylc-library/src/org/diylc/components/guitar/AbstractGuitarPickup.java

@@ -127,6 +127,8 @@ public abstract class AbstractGuitarPickup extends AbstractTransparentComponent<
   
   protected abstract Shape[] getBody();
   
+  public abstract boolean isHumbucker();
+  
   protected int getMainLabelYOffset() {
     return 0;
   }

diylc/diylc-library/src/org/diylc/components/guitar/AbstractSingleOrHumbuckerPickup.java

@@ -132,4 +132,8 @@ public abstract class AbstractSingleOrHumbuckerPickup extends AbstractGuitarPick
     
     return null;
   }
+  
+  public boolean isHumbucker() {
+    return getPolarity() == Polarity.Humbucking;
+  }
 }

diylc/diylc-library/src/org/diylc/components/guitar/HumbuckerPickup.java

@@ -371,6 +371,11 @@ public class HumbuckerPickup extends AbstractGuitarPickup {
   protected int getMainLabelYOffset() {
     return (int) (getType().getWidth().convertToPixels() / 2 - 20);
   }
+  
+  @Override
+  public boolean isHumbucker() {   
+    return true;
+  }
 
   @Override
   public void drawIcon(Graphics2D g2d, int width, int height) {

diylc/diylc-library/src/org/diylc/netlist/GuitarDiagramAnalyzer.java

@@ -29,12 +29,14 @@ import java.util.Set;
 import org.diylc.common.INetlistAnalyzer;
 import org.diylc.components.electromechanical.ClosedJack1_4;
 import org.diylc.components.electromechanical.OpenJack1_4;
+import org.diylc.components.guitar.AbstractGuitarPickup;
 import org.diylc.components.guitar.HumbuckerPickup;
 import org.diylc.components.guitar.JazzBassPickup;
 import org.diylc.components.guitar.P90Pickup;
 import org.diylc.components.guitar.PBassPickup;
 import org.diylc.components.guitar.SingleCoilPickup;
 import org.diylc.components.passive.PotentiometerPanel;
+import org.diylc.core.IDIYComponent;
 import org.diylc.netlist.Tree.ITreeWalker;
 
 public class GuitarDiagramAnalyzer extends NetlistAnalyzer implements INetlistAnalyzer {
@@ -111,6 +113,25 @@ public class GuitarDiagramAnalyzer extends NetlistAnalyzer implements INetlistAn
             negativeCount++;
         }        
       });
+      
+      Set<IDIYComponent<?>> pickups = tree.extractComponents(PICKUP_TYPES);
+      for (IDIYComponent<?> c : pickups) {
+        if (c instanceof AbstractGuitarPickup) {
+          AbstractGuitarPickup pickup = (AbstractGuitarPickup)c;
+          if (((AbstractGuitarPickup) c).isHumbucker()) {
+            TreeLeaf nLeaf = new TreeLeaf(pickup, 0, 1);
+            TreeLeaf sLeaf = new TreeLeaf(pickup, 2, 3);
+            Tree nTree = tree.locate(nLeaf, false);
+            Tree sTree = tree.locate(sLeaf, false);
+            Tree parent = tree.findCommonParent(nTree, sTree);
+            if (nTree != null && sTree != null && parent != null) {              
+               notes.add(pickup.getName() + " pickup engaged in humbucking mode with coils wired in " + parent.getConnectionType().name().toLowerCase());              
+            } else if ((nTree == null && sTree != null) || (nTree != null && sTree == null)) {
+              notes.add(pickup.getName() + " pickup engaged in coil-split mode");
+            }
+          }
+        }
+      }
             
       boolean humCancelling = noiseCount == 0;