[resolves #328][save][load] Fixed invalid save & load fields for 'FinSet', 'LineInstanceable' Components

- PodSet may save/load auto-radial-offset
- Fins now save/load
  - 'instancecount'
  - 'angularoffset'
  - 'radialoffset' = 'auto'

- RadiusPositionable interface now enforces 'setAutoRadialOffset(...)'
- implemented RockeComponentSaver#emitInteger
- all LineInstanceable implementers read/write 'instanceseparation'
- [fix] RocketComponentSaver now saves 'instancecount' even if 1==instancecount

core/src/net/sf/openrocket/file/openrocket/importt/DocumentConfig.java

@@ -187,7 +187,7 @@ class DocumentConfig {
 		// RailButton
 		setters.put("RailButton:instancecount", new IntSetter(
 				Reflection.findMethod( RailButton.class, "setInstanceCount",int.class)));
-		setters.put("RailButton:linseparation",  new DoubleSetter(
+		setters.put("RailButton:instanceseparation",  new DoubleSetter(
 				Reflection.findMethod( RailButton.class, "setInstanceSeparation", double.class)));
 		setters.put("RailButton:angularoffset",  new DoubleSetter(
 				Reflection.findMethod( RailButton.class, "setAngularOffset", double.class), Math.PI / 180.0));
@@ -242,8 +242,16 @@ class DocumentConfig {
 		// FinSet
 		setters.put("FinSet:fincount", new IntSetter(
 				Reflection.findMethod(FinSet.class, "setFinCount", int.class)));
+		setters.put("FinSet:instancecount", new IntSetter(
+				Reflection.findMethod(FinSet.class, "setInstanceCount", int.class)));
 		setters.put("FinSet:rotation", new DoubleSetter(
 				Reflection.findMethod(FinSet.class, "setBaseRotation", double.class), Math.PI / 180.0));
+		setters.put("FinSet:angularoffset", new DoubleSetter(
+				Reflection.findMethod(FinSet.class, "setAngularOffset", double.class), Math.PI / 180.0));
+		setters.put("FinSet:radialoffset", new DoubleSetter(
+				Reflection.findMethod(FinSet.class, "setRadialOffset", double.class),
+				"auto",
+				Reflection.findMethod(FinSet.class, "setAutoRadialOffset", boolean.class)));
 		setters.put("FinSet:thickness", new DoubleSetter(
 				Reflection.findMethod(FinSet.class, "setThickness", double.class)));
 		setters.put("FinSet:crosssection", new EnumSetter<FinSet.CrossSection>(
@@ -261,6 +269,7 @@ class DocumentConfig {
 		setters.put("FinSet:filletmaterial", new MaterialSetter(
 				Reflection.findMethod(FinSet.class, "setFilletMaterial", Material.class),
 				Material.Type.BULK));
+		
 		// TrapezoidFinSet
 		setters.put("TrapezoidFinSet:rootchord", new DoubleSetter(
 				Reflection.findMethod(TrapezoidFinSet.class, "setRootChord", double.class)));
@@ -425,7 +434,15 @@ class DocumentConfig {
 		setters.put("PodSet:instancecount", new IntSetter(
 				Reflection.findMethod(PodSet.class, "setInstanceCount",int.class)));
 		setters.put("PodSet:radialoffset", new DoubleSetter(
-				Reflection.findMethod(PodSet.class, "setRadialOffset", double.class)));
+				Reflection.findMethod(PodSet.class, "setRadialOffset", double.class),
+				"auto",
+				Reflection.findMethod(PodSet.class, "setAutoRadialOffset", boolean.class)));
+
+		setters.put("ParallelStage:radialoffset", new DoubleSetter(
+				Reflection.findMethod(ParallelStage.class, "setRadialOffset", double.class),
+				"auto",
+				Reflection.findMethod(ParallelStage.class, "setAutoRadialOffset", boolean.class)));
+		
 		setters.put("PodSet:angularoffset", new DoubleSetter(
 				Reflection.findMethod(PodSet.class, "setAngularOffset", double.class),Math.PI / 180.0));
 				

core/src/net/sf/openrocket/file/openrocket/savers/FinSetSaver.java

@@ -12,8 +12,11 @@ public class FinSetSaver extends ExternalComponentSaver {
 		super.addParams(c, elements);
 		
 		net.sf.openrocket.rocketcomponent.FinSet fins = (net.sf.openrocket.rocketcomponent.FinSet) c;
-		elements.add("<fincount>" + fins.getFinCount() + "</fincount>");
-		elements.add("<rotation>" + (fins.getBaseRotation() * 180.0 / Math.PI) + "</rotation>");
+
+		// // this information is already saved as 'RingInstanceable' in RocktComponent
+		// elements.add("<fincount>" + fins.getFinCount() + "</fincount>");
+		// elements.add("<rotation>" + (fins.getBaseRotation() * 180.0 / Math.PI) + "</rotation>");
+
 		elements.add("<thickness>" + fins.getThickness() + "</thickness>");
 		elements.add("<crosssection>" + fins.getCrossSection().name().toLowerCase(Locale.ENGLISH)
 				+ "</crosssection>");

core/src/net/sf/openrocket/file/openrocket/savers/RocketComponentSaver.java

@@ -84,18 +84,17 @@ public class RocketComponentSaver {
 		
 		if ( c instanceof Instanceable) {
 			int instanceCount = c.getInstanceCount();
-			if( 1 < instanceCount ){
 			if( c instanceof Clusterable ){
 				; // no-op.  Instance counts are set via named cluster configurations
 			}
 			if( c instanceof LineInstanceable ){
 				LineInstanceable line = (LineInstanceable)c;
-					emitString( elements, "instancecount", Integer.toString( instanceCount ) );
-					emitDouble( elements, "linseparation", line.getInstanceSeparation());
+				emitInteger( elements, "instancecount", instanceCount );
+				emitDouble( elements, "instanceseparation", line.getInstanceSeparation());
 			}
 			if( c instanceof RingInstanceable){
 				RingInstanceable ring = (RingInstanceable)c;
-					emitString( elements, "instancecount", Integer.toString( instanceCount ));
+				emitInteger( elements, "instancecount", instanceCount );
 				if( ring.getAutoRadialOffset() ){
 					emitString(elements, "radialoffset", "auto");
 				}else{
@@ -104,7 +103,6 @@ public class RocketComponentSaver {
 				emitDouble( elements, "angularoffset", ring.getAngularOffset()*180.0/Math.PI);
 			}
 		}
-		}
 		
 		
 		// Save position unless "AFTER"
@@ -253,6 +251,10 @@ public class RocketComponentSaver {
     		emitString( elements, enclosingTag, Double.toString( value ));
     }
 
+    protected static void emitInteger( final List<String> elements, final String enclosingTag, final int value){
+    		elements.add("<"+enclosingTag+">" +  Integer.toString( value ) + "</"+enclosingTag+">");
+    }
+
     protected static void emitString( final List<String> elements, final String enclosingTag, final String value){
     		elements.add("<"+enclosingTag+">" + value + "</"+enclosingTag+">");
     }

core/src/net/sf/openrocket/rocketcomponent/FinSet.java

@@ -780,6 +780,11 @@ public abstract class FinSet extends ExternalComponent implements RingInstanceab
 		// no-op.  Not allowed for fins		
 	}
 	
+	@Override
+	public void setAutoRadialOffset( final boolean auto ) {
+		// no-op.  Fins are *always* automatically positioned
+	}
+
 	@Override
 	public void setInstanceCount(int newCount) {
 		setFinCount(newCount);

core/src/net/sf/openrocket/rocketcomponent/RingInstanceable.java

@@ -15,10 +15,12 @@ public interface RingInstanceable extends Instanceable, AnglePositionable, Radiu
 	public double[] getInstanceAngles();
 	
 	
+	@Override
+	public boolean getAutoRadialOffset();
 	@Override
 	public double getRadialOffset();
 	@Override
-	public boolean getAutoRadialOffset();
+	public void setAutoRadialOffset( final boolean auto );
 	@Override
 	public void setRadialOffset(final double radius);
 	

core/src/net/sf/openrocket/rocketcomponent/position/RadiusPositionable.java

@@ -1,9 +1,8 @@
 package net.sf.openrocket.rocketcomponent.position;
 
 public interface RadiusPositionable {
-	
-	public double getRadialOffset();
 	public boolean getAutoRadialOffset();	
+	public double getRadialOffset();
+	public void setAutoRadialOffset( final boolean auto );
 	public void setRadialOffset(final double radius);
-	
 }