Output SPICE node names in the "Nxxx" format

join all nodes connected to GND together

diylc/diylc-core/src/org/diylc/components/AbstractComponent.java

@@ -297,5 +297,9 @@ public abstract class AbstractComponent<T> implements IDIYComponent<T> {
   public String[] getSectionNames(int pointIndex) {   
     return null;
   }
-  
+  
+  @Override
+  public String getCommonPointName(int pointIndex) {   
+    return null;
+  }
 }

diylc/diylc-core/src/org/diylc/core/IDIYComponent.java

@@ -131,11 +131,17 @@ public interface IDIYComponent<T> extends Serializable {
   String getInternalLinkName(int index1, int index2);
   
   /**   
-   * @param pointIndex name of the internal section containing the specified point, or null if the component does not have internal sections.
+   * @param pointIndex  
-   * One point can be shared between multiple sections, in which case, the result may contain more than one element. 
+   * @return name of the internal section containing the specified point, or null if the component does not have internal sections.
-   * @return
+   * One point can be shared between multiple sections, in which case, the result may contain more than one element.
    */
-  String[] getSectionNames(int pointIndex);
+  String[] getSectionNames(int pointIndex);
+  
+  /**   
+   * @param pointIndex
+   * @return name of the common point that joins all the other points with the same name together, e.g. GND
+   */
+  String getCommonPointName(int pointIndex);
 
   /**
    * Draws the component onto the {@link Graphics2D}.

diylc/diylc-core/src/org/diylc/presenter/Presenter.java

@@ -2824,10 +2824,14 @@ public class Presenter implements IPlugInPort {
         Point2D point1 = node1.getComponent().getControlPoint(node1.getPointIndex());
         Point2D point2 = node2.getComponent().getControlPoint(node2.getPointIndex());
         
+        String commonPoint1 = node1.getComponent().getCommonPointName(node1.getPointIndex());
+        String commonPoint2 = node2.getComponent().getCommonPointName(node2.getPointIndex());
+        
         // try both directions
         if (point1.distance(point2) < t || 
             checkGraphConnection(point1, point2, connections, continuityAreas, new boolean[connections.size()]) || 
-            checkGraphConnection(point2, point1, connections, continuityAreas, new boolean[connections.size()])) {
+            checkGraphConnection(point2, point1, connections, continuityAreas, new boolean[connections.size()]) ||
+            (commonPoint1 != null && commonPoint1.equalsIgnoreCase(commonPoint2))) {
           boolean added = false;
           // add to an existing vertex if possible
           for (Group g : netlist.getGroups())

diylc/diylc-library/src/org/diylc/components/misc/GroundSymbol.java

@@ -139,6 +139,11 @@ public class GroundSymbol extends AbstractComponent<Void> {
   @Override
   public String getControlPointNodeName(int index) {
     return getName();
+  }
+  
+  @Override
+  public String getCommonPointName(int pointIndex) {  
+    return "GND";
   }
 
   @Override

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

@@ -113,7 +113,7 @@ public class SpiceAnalyzer extends NetlistAnalyzer implements INetlistAnalyzer {
       
       // output to spice
       for (int i = 0; i < c.getControlPointCount(); i++) {
-        sb.append(fill(Integer.toString(nodeIndices[i]), 5));
+        sb.append(fill(formatSpiceNode(nodeIndices[i]), 5));
         sb.append(" ");
       }
       
@@ -130,6 +130,10 @@ public class SpiceAnalyzer extends NetlistAnalyzer implements INetlistAnalyzer {
     return new Summary(netlist, sb.toString());
   }
   
+  private static String formatSpiceNode(int i) {
+    return String.format("N%03d" , i);
+  }
+  
   private String fill(String source, int desiredLength) {
     String res = source;
     for (int i = 0; i < desiredLength - source.length(); i++)

diylc/diylc-swing/update.xml

@@ -2620,6 +2620,22 @@
 				</org.diylc.appframework.update.Change>	
 			</changes>
 			<url>https://github.com/bancika/diy-layout-creator/releases</url>
+		</org.diylc.appframework.update.Version>
+		<org.diylc.appframework.update.Version>
+			<versionNumber>
+				<major>3</major>
+				<minor>57</minor>
+				<build>0</build>
+			</versionNumber>
+			<releaseDate>2019-03-10 00:00:00.000 CET</releaseDate>
+			<name></name>
+			<changes>									
+				<org.diylc.appframework.update.Change>
+					<changeType>IMPROVEMENT</changeType>
+					<description>Output SPICE node names in the "Nxxx" format</description>
+				</org.diylc.appframework.update.Change>					
+			</changes>
+			<url>https://github.com/bancika/diy-layout-creator/releases</url>
 		</org.diylc.appframework.update.Version>	
 	</a>
 </java.util.Arrays_-ArrayList>