[Minor] Harmonized interface for instanceable components

Implemented 'Instanceable' Interface
    - MotorMount implements instanceable
        - BodyTube
        - Innertube
    -RingInstance interface
        - BoosterSet
        - PodSet
    -LineInstanceable interface [This feature is not exposed in UI)
        - LaunchLug
        - LaunchButton (Stub only, ATT)
        - RingComponent (abstract ancestor class)
-Reverted MotorMount Function names to "[is|set]MotorMount"

core/resources/l10n/messages.properties

@@ -1376,7 +1376,9 @@ RocketComponent.Position.ABSOLUTE = Tip of the nose cone
 
 
 ! LaunchLug
-LaunchLug.Launchlug = Launch lug
+LaunchLug.Launchlug = Launch Lug
+! LaunchButton
+LaunchButton.LaunchButton = Launch Button
 ! NoseCone
 NoseCone.NoseCone = Nose cone
 ! Transition

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

@@ -21,7 +21,9 @@ import net.sf.openrocket.rocketcomponent.ExternalComponent.Finish;
 import net.sf.openrocket.rocketcomponent.FinSet;
 import net.sf.openrocket.rocketcomponent.FreeformFinSet;
 import net.sf.openrocket.rocketcomponent.InnerTube;
+import net.sf.openrocket.rocketcomponent.Instanceable;
 import net.sf.openrocket.rocketcomponent.LaunchLug;
+import net.sf.openrocket.rocketcomponent.LineInstanceable;
 import net.sf.openrocket.rocketcomponent.MassComponent;
 import net.sf.openrocket.rocketcomponent.MassObject;
 import net.sf.openrocket.rocketcomponent.NoseCone;
@@ -31,6 +33,7 @@ import net.sf.openrocket.rocketcomponent.RadiusRingComponent;
 import net.sf.openrocket.rocketcomponent.RecoveryDevice;
 import net.sf.openrocket.rocketcomponent.ReferenceType;
 import net.sf.openrocket.rocketcomponent.RingComponent;
+import net.sf.openrocket.rocketcomponent.RingInstanceable;
 import net.sf.openrocket.rocketcomponent.Rocket;
 import net.sf.openrocket.rocketcomponent.RocketComponent;
 import net.sf.openrocket.rocketcomponent.ShockCord;
@@ -411,9 +414,27 @@ class DocumentConfig {
 				Reflection.findMethod(AxialStage.class, "getSeparationConfigurations"),
 				Reflection.findMethod(StageSeparationConfiguration.class, "setSeparationDelay", double.class)));
 		
-		setters.put("ComponentAssembly:instancecount", new IntSetter(Reflection.findMethod(AxialStage.class, "setInstanceCount", int.class)));
+		/*
-		setters.put("ComponentAssembly:radialoffset", new DoubleSetter(Reflection.findMethod(AxialStage.class, "setRadialOffset", double.class)));
+		 * The keys are of the form Class:param, where Class is the class name and param
-		setters.put("ComponentAssembly:angleoffset", new DoubleSetter(Reflection.findMethod(AxialStage.class, "setAngularOffset", double.class)));
+		 * the element name.  Setters are searched for in descending class order.
+		 * A setter of null means setting the parameter is not allowed.
+		 */
+		
+//		setters.put("ComponentAssembly:instancecount", new IntSetter(Reflection.findMethod(AxialStage.class, "setInstanceCount", int.class)));
+//		setters.put("ComponentAssembly:radialoffset", new DoubleSetter(Reflection.findMethod(AxialStage.class, "setRadialOffset", double.class)));
+//		setters.put("ComponentAssembly:angleoffset", new DoubleSetter(Reflection.findMethod(AxialStage.class, "setAngularOffset", double.class)));
+		
+		setters.put("Instanceable:instancecount", new IntSetter(
+				Reflection.findMethod(Instanceable.class, "setInstanceCount",int.class)));
+		setters.put("RingInstanceable:radialoffset", new DoubleSetter(
+				Reflection.findMethod(RingInstanceable.class, "setRadialOffset", double.class)));
+		setters.put("RingInstance:angleoffset", new DoubleSetter(
+				Reflection.findMethod(RingInstanceable.class, "setAngularOffset", double.class)));
+		
+		setters.put("LineInstanceable:instanceseparation",  new DoubleSetter(
+				Reflection.findMethod( LineInstanceable.class, "setInstanceSeparation", double.class)));
+		
+
 
 	}
 	

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

@@ -25,7 +25,7 @@ class MotorMountHandler extends AbstractElementHandler {
 	public MotorMountHandler(MotorMount mount, DocumentLoadingContext context) {
 		this.mount = mount;
 		this.context = context;
-		mount.setActive(true);
+		mount.setMotorMount(true);
 	}
 	
 	@Override

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

@@ -27,7 +27,7 @@ public class BodyTubeSaver extends SymmetricComponentSaver {
 		else
 			elements.add("<radius>" + tube.getOuterRadius() + "</radius>");
 
-		if (tube.isActive()) {
+		if (tube.isMotorMount()) {
 			elements.addAll(motorMountParams(tube));
 		}
 	}

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

@@ -6,7 +6,9 @@ import java.util.List;
 
 import net.sf.openrocket.rocketcomponent.BoosterSet;
 import net.sf.openrocket.rocketcomponent.ComponentAssembly;
+import net.sf.openrocket.rocketcomponent.Instanceable;
 import net.sf.openrocket.rocketcomponent.PodSet;
+import net.sf.openrocket.rocketcomponent.RingInstanceable;
 import net.sf.openrocket.rocketcomponent.RocketComponent;
 
 public class ComponentAssemblySaver extends RocketComponentSaver {
@@ -50,14 +52,17 @@ public class ComponentAssemblySaver extends RocketComponentSaver {
 		final String startangle_tag = "angleoffset";
 		
 		
-		if (null != currentStage) {
+		if ( currentStage instanceof Instanceable) {
 			int instanceCount = currentStage.getInstanceCount();
 			elementsToReturn.add("<" + instCt_tag + ">" + instanceCount + "</" + instCt_tag + ">");
-			double radialOffset = currentStage.getRadialOffset();
+			if( currentStage instanceof RingInstanceable ){
+				RingInstanceable ring = (RingInstanceable) currentStage;
+				double radialOffset = ring.getRadialOffset();
 				elementsToReturn.add("<" + radoffs_tag + ">" + radialOffset + "</" + radoffs_tag + ">");
-			double angularOffset = currentStage.getAngularOffset();
+				double angularOffset = ring.getAngularOffset();
 				elementsToReturn.add("<" + startangle_tag + ">" + angularOffset + "</" + startangle_tag + ">");
 			}
+		}
 		
 		return elementsToReturn;
 	}

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

@@ -32,7 +32,7 @@ public class InnerTubeSaver extends ThicknessRingComponentSaver {
 		elements.add("<clusterrotation>" + (tube.getClusterRotation() * 180.0 / Math.PI)
 				+ "</clusterrotation>");
 
-		if (tube.isActive()) {
+		if (tube.isMotorMount()) {
 			elements.addAll(motorMountParams(tube));
 		}
 

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

@@ -144,7 +144,7 @@ public class RocketComponentSaver {
 	
 	
 	protected final List<String> motorMountParams(MotorMount mount) {
-		if (!mount.isActive())
+		if (!mount.isMotorMount())
 			return Collections.emptyList();
 		
 		//FlightConfigurationID[] motorConfigIDs = ((RocketComponent) mount).getRocket().getFlightConfigurationIDs();

core/src/net/sf/openrocket/file/rocksim/export/BodyTubeDTO.java

@@ -87,7 +87,7 @@ public class BodyTubeDTO extends BasePartDTO implements AttachableParts {
         setID(theORBodyTube.getInnerRadius() * RocksimCommonConstants.ROCKSIM_TO_OPENROCKET_RADIUS);
         setOD(theORBodyTube.getOuterRadius() * RocksimCommonConstants.ROCKSIM_TO_OPENROCKET_RADIUS);
         setMotorDia((theORBodyTube.getMotorMountDiameter() / 2) * RocksimCommonConstants.ROCKSIM_TO_OPENROCKET_RADIUS);
-        setMotorMount(theORBodyTube.isActive());
+        setMotorMount(theORBodyTube.isMotorMount());
 
         List<RocketComponent> children = theORBodyTube.getChildren();
         for (int i = 0; i < children.size(); i++) {

core/src/net/sf/openrocket/file/rocksim/export/InnerBodyTubeDTO.java

@@ -49,7 +49,7 @@ public class InnerBodyTubeDTO extends BodyTubeDTO implements AttachableParts {
 		setID(bt.getInnerRadius() * RocksimCommonConstants.ROCKSIM_TO_OPENROCKET_RADIUS);
 		setOD(bt.getOuterRadius() * RocksimCommonConstants.ROCKSIM_TO_OPENROCKET_RADIUS);
 		setMotorDia((bt.getMotorMountDiameter() / 2) * RocksimCommonConstants.ROCKSIM_TO_OPENROCKET_RADIUS);
-		setMotorMount(bt.isActive());
+		setMotorMount(bt.isMotorMount());
 		setInsideTube(true);
 		setRadialAngle(bt.getRadialDirection());
 		setRadialLoc(bt.getRadialPosition() * RocksimCommonConstants.ROCKSIM_TO_OPENROCKET_LENGTH);

core/src/net/sf/openrocket/formatting/MotorDescriptionSubstitutor.java

@@ -72,7 +72,7 @@ public class MotorDescriptionSubstitutor implements RocketSubstitutor {
 				MotorInstance inst = mount.getMotorInstance(fcid);
 				Motor motor = inst.getMotor();
 				
-				if (mount.isActive() && motor != null) {
+				if (mount.isMotorMount() && motor != null) {
 					String designation = motor.getDesignation(inst.getEjectionDelay());
 					
 					for (int i = 0; i < mount.getMotorCount(); i++) {

core/src/net/sf/openrocket/optimization/services/DefaultSimulationModifierService.java

@@ -179,7 +179,7 @@ public class DefaultSimulationModifierService implements SimulationModifierServi
 			// Conditional motor mount parameters
 			if (c instanceof MotorMount) {
 				MotorMount mount = (MotorMount) c;
-				if (mount.isActive()) {
+				if (mount.isMotorMount()) {
 					
 					SimulationModifier mod = new GenericComponentModifier(
 							trans.get("optimization.modifier.motormount.overhang"),

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

@@ -12,7 +12,7 @@ public class AxialStage extends ComponentAssembly implements FlightConfigurableC
 	private static final Translator trans = Application.getTranslator();
 	//private static final Logger log = LoggerFactory.getLogger(AxialStage.class);
 	
-	private FlightConfigurationSet<StageSeparationConfiguration> separationConfigurations;
+	protected FlightConfigurationSet<StageSeparationConfiguration> separationConfigurations;
 	
 	protected int stageNumber;
 	

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

@@ -28,7 +28,7 @@ public class BodyTube extends SymmetricComponent implements MotorMount, Coaxial
 	
 	// When changing the inner radius, thickness is modified
 	private double overhang = 0;
-	private boolean isActiveMount = false;
+	private boolean isActing = false;
 	
 	private MotorConfigurationSet motors;
 	
@@ -382,7 +382,7 @@ public class BodyTube extends SymmetricComponent implements MotorMount, Coaxial
 		if( null != newMotorInstance ){
 			newMotorInstance.setMount( this);
 			if( MotorInstanceId.EMPTY_ID != newMotorInstance.getID()){
-				this.setActive(true);
+				this.setMotorMount(true);
 			}
 		}
 	}
@@ -398,21 +398,23 @@ public class BodyTube extends SymmetricComponent implements MotorMount, Coaxial
 	}
 	
 	@Override
-    public void setActive(boolean _active){
+    public void setMotorMount(boolean _active){
-    	if (this.isActiveMount == _active)
+    	if (this.isActing == _active)
     		return;
-    	this.isActiveMount = _active;
+    	this.isActing = _active;
     	fireComponentChangeEvent(ComponentChangeEvent.MOTOR_CHANGE);
     }
 
 	@Override
-	public boolean isActive(){
+	public boolean isMotorMount(){
-		return this.isActiveMount;
+		return this.isActing;
 	}
 	
-	//@Override
+	@Override
 	public boolean hasMotor() {
-		return ( 0 < this.motors.size());
+		// the default MotorInstance is the EMPTY_INSTANCE.  
+		// If the class contains more instances, at least one will have motors.
+		return ( 1 < this.motors.size());
 	}
 		
 	@Override

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

@@ -11,16 +11,28 @@ import net.sf.openrocket.startup.Application;
 import net.sf.openrocket.util.BugException;
 import net.sf.openrocket.util.Coordinate;
 
-public class BoosterSet extends AxialStage implements FlightConfigurableComponent, OutsideComponent {
+public class BoosterSet extends AxialStage implements FlightConfigurableComponent, RingInstanceable, OutsideComponent {
 	
 	private static final Translator trans = Application.getTranslator();
 	private static final Logger log = LoggerFactory.getLogger(BoosterSet.class);
 	
-	private FlightConfigurationSet<StageSeparationConfiguration> separationConfigurations;
+	protected int count = 1;
+
+	protected double angularSeparation = Math.PI;
+	protected double angularPosition_rad = 0;
+	protected double radialPosition_m = 0;
 	
 	public BoosterSet() {
 		this.count = 2;
 		this.relativePosition = Position.BOTTOM;
+		this.angularSeparation = Math.PI * 2 / this.count;
+	}
+	
+	public BoosterSet( final int _count ){
+		this();
+		
+		this.count = _count;
+		this.angularSeparation = Math.PI * 2 / this.count;
 	}
 	
 	@Override
@@ -71,7 +83,7 @@ public class BoosterSet extends AxialStage implements FlightConfigurableComponen
 	
 	@Override
 	public void cloneFlightConfiguration(FlightConfigurationID oldConfigId, FlightConfigurationID newConfigId) {
-		separationConfigurations.cloneFlightConfiguration(oldConfigId, newConfigId);
+		this.separationConfigurations.cloneFlightConfiguration(oldConfigId, newConfigId);
 	}
 	
 	@Override
@@ -80,6 +92,21 @@ public class BoosterSet extends AxialStage implements FlightConfigurableComponen
 		return copy;
 	}
 
+	@Override
+	public double getAngularOffset() {
+		return this.angularPosition_rad;
+	}
+
+	@Override
+	public int getInstanceCount() {
+		return this.count;
+	}
+	
+	@Override
+	public double getRadialOffset() {
+		return this.radialPosition_m;
+	}
+	
 	@Override
 	public Coordinate[] getLocation() {
 		if (null == this.parent) {
@@ -102,6 +129,11 @@ public class BoosterSet extends AxialStage implements FlightConfigurableComponen
 		return !isCenterline();
 	}
 	
+	@Override
+	public String getPatternName(){
+		return (this.getInstanceCount() + "-ring");
+	}
+
 	/**
 	 * Boosters are, by definition, not centerline. 
 	 * 
@@ -130,6 +162,18 @@ public class BoosterSet extends AxialStage implements FlightConfigurableComponen
 		return this.getAxialOffset();
 	}
 	
+	@Override
+	public void setRadialOffset(final double radius) {
+		this.radialPosition_m = radius;
+		fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);	
+	}
+
+	@Override
+	public void setAngularOffset(final double angle_rad) {
+		this.angularPosition_rad = angle_rad;
+		fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
+	}
+	
 	@Override
 	public Coordinate[] shiftCoordinates(Coordinate[] c) {
 		checkState();
@@ -159,4 +203,31 @@ public class BoosterSet extends AxialStage implements FlightConfigurableComponen
 		return toReturn;
 	}
 	
+
+	
+	@Override
+	public void toDebugTreeNode(final StringBuilder buffer, final String prefix) {
+		
+		String thisLabel = this.getName() + " (" + this.getStageNumber() + ")";
+		
+		buffer.append(String.format("%s    %-24s  %5.3f", prefix, thisLabel, this.getLength()));
+		
+		if (this.isCenterline()) {
+			buffer.append(String.format("  %24s  %24s\n", this.getOffset(), this.getLocation()[0]));
+		} else {
+			buffer.append(String.format("    (offset: %4.1f  via: %s )\n", this.getAxialOffset(), this.relativePosition.name()));
+			Coordinate[] relCoords = this.shiftCoordinates(new Coordinate[] { Coordinate.ZERO });
+			Coordinate[] absCoords = this.getLocation();
+			
+			for (int instanceNumber = 0; instanceNumber < this.count; instanceNumber++) {
+				Coordinate instanceRelativePosition = relCoords[instanceNumber];
+				Coordinate instanceAbsolutePosition = absCoords[instanceNumber];
+				buffer.append(String.format("%s                 [instance %2d of %2d]  %32s  %32s\n", prefix, instanceNumber, count,
+						instanceRelativePosition, instanceAbsolutePosition));
+			}
+		}
+		
+	}
+	
+	
 }

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

@@ -9,6 +9,7 @@ import net.sf.openrocket.startup.Application;
 public class Bulkhead extends RadiusRingComponent {
 	private static final Translator trans = Application.getTranslator();
 
+
 	public Bulkhead() {
 		setOuterRadiusAutomatic(true);
 		setLength(0.002);

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

@@ -7,7 +7,7 @@ import net.sf.openrocket.startup.Application;
 import net.sf.openrocket.util.Coordinate;
 
 
-public class CenteringRing extends RadiusRingComponent {
+public class CenteringRing extends RadiusRingComponent implements LineInstanceable {
 
 	public CenteringRing() {
 		setOuterRadiusAutomatic(true);

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

@@ -2,10 +2,13 @@ package net.sf.openrocket.rocketcomponent;
 
 import net.sf.openrocket.util.ChangeSource;
 
-public interface Clusterable extends ChangeSource {
+public interface Clusterable extends ChangeSource, Instanceable {
 
 	public ClusterConfiguration getClusterConfiguration();
+	
 	public void setClusterConfiguration(ClusterConfiguration cluster);
+	
 	public double getClusterSeparation();
 	
+	
 }

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

@@ -4,11 +4,11 @@ import java.util.Collection;
 import java.util.Collections;
 import java.util.Iterator;
 
-import net.sf.openrocket.util.Coordinate;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import net.sf.openrocket.util.Coordinate;
+
 
 
 /**
@@ -22,12 +22,6 @@ import org.slf4j.LoggerFactory;
 public abstract class ComponentAssembly extends RocketComponent {
 	private static final Logger log = LoggerFactory.getLogger(ComponentAssembly.class);
 	
-	protected double angularPosition_rad = 0;
-	protected double radialPosition_m = 0;
-	
-	protected int count = 1;
-	protected double angularSeparation = Math.PI;
-	
 	/**
 	 * Sets the position of the components to POSITION_RELATIVE_AFTER.
 	 * (Should have no effect.)
@@ -36,23 +30,11 @@ public abstract class ComponentAssembly extends RocketComponent {
 		super(RocketComponent.Position.AFTER);
 	}
 	
-	
-	@Override
-	public int getInstanceCount() {
-		return this.count;
-	}
-	
-	public double getAngularOffset() {
-		return this.angularPosition_rad;
-	}
-	
-	
 	@Override
 	public double getAxialOffset() {
 		return super.asPositionValue(this.relativePosition);
 	}
 
-	
 	/**
 	 * Null method (ComponentAssembly has no bounds of itself).
 	 */
@@ -77,11 +59,6 @@ public abstract class ComponentAssembly extends RocketComponent {
 		return 0;
 	}
 	
-	public double getRadialOffset() {
-		return this.radialPosition_m;
-	}
-	
-	
 	/**
 	 * Null method (ComponentAssembly has no mass of itself).
 	 */
@@ -121,15 +98,6 @@ public abstract class ComponentAssembly extends RocketComponent {
 	}
 
 	
-	public void setAngularOffset(final double angle_rad) {
-		if (this.isCenterline()) {
-			return;
-		}
-		
-		this.angularPosition_rad = angle_rad;
-		fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
-	}
-	
 	@Override
 	public void setAxialOffset(final double _pos) {
 		this.updateBounds();
@@ -151,18 +119,9 @@ public abstract class ComponentAssembly extends RocketComponent {
 			return;
 		}
 		
-		this.count = _count;
-		this.angularSeparation = Math.PI * 2 / this.count;
 		fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
 	}
 	
-	public void setRadialOffset(final double radius) {
-		if (false == this.isCenterline()) {
-			this.radialPosition_m = radius;
-			fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
-		}
-	}
-	
 	public void setRelativePositionMethod(final Position _newPosition) {
 		if (null == this.parent) {
 			throw new NullPointerException(" a Stage requires a parent before any positioning! ");
@@ -192,31 +151,6 @@ public abstract class ComponentAssembly extends RocketComponent {
 		return false;
 	}
 	
-	
-	@Override
-	public void toDebugTreeNode(final StringBuilder buffer, final String prefix) {
-		
-		String thisLabel = this.getName() + " (" + this.getStageNumber() + ")";
-		
-		buffer.append(String.format("%s    %-24s  %5.3f", prefix, thisLabel, this.getLength()));
-		
-		if (this.isCenterline()) {
-			buffer.append(String.format("  %24s  %24s\n", this.getOffset(), this.getLocation()[0]));
-		} else {
-			buffer.append(String.format("    (offset: %4.1f  via: %s )\n", this.getAxialOffset(), this.relativePosition.name()));
-			Coordinate[] relCoords = this.shiftCoordinates(new Coordinate[] { Coordinate.ZERO });
-			Coordinate[] absCoords = this.getLocation();
-			
-			for (int instanceNumber = 0; instanceNumber < this.count; instanceNumber++) {
-				Coordinate instanceRelativePosition = relCoords[instanceNumber];
-				Coordinate instanceAbsolutePosition = absCoords[instanceNumber];
-				buffer.append(String.format("%s                 [instance %2d of %2d]  %32s  %32s\n", prefix, instanceNumber, count,
-						instanceRelativePosition, instanceAbsolutePosition));
-			}
-		}
-		
-	}
-	
 	@Override
 	protected void update() {
 		if (null == this.parent) {

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

@@ -188,11 +188,12 @@ public class FlightConfiguration implements FlightConfigurableParameter<FlightCo
 			}
 			// DEVEL
 			// see planning notes...
-			if (comp instanceof MotorMount) { // is instance, AND is activeMount 
+			if ( comp instanceof MotorMount ){ 
 				MotorMount mount = (MotorMount)comp;
 				//if( mount.isActive() ){
 						
 				// if( mount instanceof Clusterable ){
+				// if( 1 < comp.getInstanceCount() ){
 				// if comp is clustered, it will be clustered from the innerTube, no? 
 				//List<MotorInstance> instanceList = mount.getMotorInstance(this.fcid);
 			    	

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

@@ -4,6 +4,9 @@ import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import net.sf.openrocket.l10n.Translator;
 import net.sf.openrocket.motor.Motor;
 import net.sf.openrocket.motor.MotorInstance;
@@ -23,13 +26,14 @@ import net.sf.openrocket.util.MathUtil;
  */
 public class InnerTube extends ThicknessRingComponent implements Clusterable, RadialParent, MotorMount {
 	private static final Translator trans = Application.getTranslator();
+	private static final Logger log = LoggerFactory.getLogger(InnerTube.class);
 	
 	private ClusterConfiguration cluster = ClusterConfiguration.SINGLE;
 	private double clusterScale = 1.0;
 	private double clusterRotation = 0.0;
 	
 	private double overhang = 0;
-	private boolean isActiveMount;
+	private boolean isActing;
 	private FlightConfigurationSet<MotorInstance> motors;
 	
 	/**
@@ -63,6 +67,12 @@ public class InnerTube extends ThicknessRingComponent implements Clusterable, Ra
 		return trans.get("InnerTube.InnerTube");
 	}
 	
+	@Override
+	public String getPatternName() {
+		return this.cluster.getXMLName();
+	}
+	
+
 	@Override
 	public boolean allowsChildren() {
 		return true;
@@ -133,6 +143,11 @@ public class InnerTube extends ThicknessRingComponent implements Clusterable, Ra
 		return cluster.getClusterCount();
 	}
 	
+	@Override
+	public void setInstanceCount( final int newCount ){
+		log.error("Programmer Error:  cannot set the instance count of an "+this.getClass().getSimpleName()+" directly.  Please set setClusterConfiguration(ClusterConfiguration) instead.");
+	}
+	
 	/**
 	 * Get the cluster scaling.  A value of 1.0 indicates that the tubes are packed
 	 * touching each other, larger values separate the tubes and smaller values
@@ -142,6 +157,11 @@ public class InnerTube extends ThicknessRingComponent implements Clusterable, Ra
 		return clusterScale;
 	}
 	
+	@Override
+	public boolean isCenterline() {
+		return (1 == this.getClusterCount());
+	}
+
 	/**
 	 * Set the cluster scaling.
 	 * @see #getClusterScale()
@@ -243,7 +263,7 @@ public class InnerTube extends ThicknessRingComponent implements Clusterable, Ra
 		if( null != newMotorInstance ){
 			newMotorInstance.setMount( this);
 			if( MotorInstanceId.EMPTY_ID != newMotorInstance.getID()){
-				this.setActive(true);
+				this.setMotorMount(true);
 			}
 		}
 	}
@@ -260,21 +280,22 @@ public class InnerTube extends ThicknessRingComponent implements Clusterable, Ra
 	
 	
 	@Override
-    public void setActive(boolean _active){
+    public void setMotorMount(boolean _active){
-    	if (this.isActiveMount == _active)
+    	if (this.isActing == _active)
     		return;
-    	this.isActiveMount = _active;
+    	this.isActing = _active;
     	fireComponentChangeEvent(ComponentChangeEvent.MOTOR_CHANGE);
     }
 
 	@Override
-	public boolean isActive(){
+	public boolean isMotorMount(){
-		return this.isActiveMount;
+		return this.isActing;
 	}
 	
-	//@Override
+	@Override
 	public boolean hasMotor() {
-		return ( 0 < this.motors.size());
+		// the default MotorInstance is the EMPTY_INSTANCE.  If we have more than that, then the other instance will have a motor.
+		return ( 1 < this.motors.size());
 	}
 	
 	@Override
@@ -339,4 +360,6 @@ public class InnerTube extends ThicknessRingComponent implements Clusterable, Ra
 		return copy;
 	}
 
+
+	
 }

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

@@ -0,0 +1,26 @@
+package net.sf.openrocket.rocketcomponent;
+
+import net.sf.openrocket.util.Coordinate;
+
+public interface Instanceable {
+		
+	/** duplicate override...   especially vs shiftCoordinates... 
+	// one of the two should be private
+	 * 
+	 * @return coordinates each instance of this component
+	 */
+	public Coordinate[] getLocation();
+	
+	// overrides a method in RocketComponent
+	// not modifiable
+	public boolean isCenterline();
+	
+	public void setInstanceCount( final int newCount );
+	
+	public int getInstanceCount();
+
+	public Coordinate[] shiftCoordinates(Coordinate[] c);
+	
+	public String getPatternName();
+	
+}

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

@@ -0,0 +1,275 @@
+package net.sf.openrocket.rocketcomponent;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+import net.sf.openrocket.l10n.Translator;
+import net.sf.openrocket.preset.ComponentPreset;
+import net.sf.openrocket.preset.ComponentPreset.Type;
+import net.sf.openrocket.startup.Application;
+import net.sf.openrocket.util.Coordinate;
+import net.sf.openrocket.util.MathUtil;
+
+/** 
+ * WARNING!  This class is stubbed out, partially implemented, but DEFINITELY not ready for use.
+ * @author widget (Daniel Williams)
+ *
+ */
+public abstract class LaunchButton extends ExternalComponent implements LineInstanceable {
+	
+	private static final Translator trans = Application.getTranslator();
+	
+	private double radius;
+	private double thickness;
+	
+	private double radialDirection = 0;
+	
+	private int instanceCount = 1;
+	private double instanceSeparation = 0; // front-front along the positive rocket axis. i.e. [1,0,0];
+	
+	/* These are calculated when the component is first attached to any Rocket */
+	private double shiftY, shiftZ;
+	
+	
+
+	public LaunchButton() {
+		super(Position.MIDDLE);
+		radius = 0.01 / 2;
+		thickness = 0.001;
+		length = 0.03;
+	}
+	
+	
+//	@Override
+//	public double getOuterRadius() {
+//		return radius;
+//	}
+//	
+//	@Override
+//	public void setOuterRadius(double radius) {
+//		if (MathUtil.equals(this.radius, radius))
+//			return;
+//		this.radius = radius;
+//		this.thickness = Math.min(this.thickness, this.radius);
+//		clearPreset();
+//		fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
+//	}
+	
+//	@Override
+//	public double getInnerRadius() {
+//		return radius - thickness;
+//	}
+//	
+//	@Override
+//	public void setInnerRadius(double innerRadius) {
+//		setOuterRadius(innerRadius + thickness);
+//	}
+//	
+//	@Override
+//	public double getThickness() {
+//		return thickness;
+//	}
+	
+	public void setThickness(double thickness) {
+		if (MathUtil.equals(this.thickness, thickness))
+			return;
+		this.thickness = MathUtil.clamp(thickness, 0, radius);
+		clearPreset();
+		fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
+	}
+	
+	
+	public double getRadialDirection() {
+		return radialDirection;
+	}
+	
+	public void setRadialDirection(double direction) {
+		direction = MathUtil.reduce180(direction);
+		if (MathUtil.equals(this.radialDirection, direction))
+			return;
+		this.radialDirection = direction;
+		fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
+	}
+	
+	
+	
+	public void setLength(double length) {
+		if (MathUtil.equals(this.length, length))
+			return;
+		this.length = length;
+		fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
+	}
+	
+	
+	@Override
+	public boolean isCenterline() {
+		return false;
+	}
+	
+	
+	@Override
+	public void setRelativePosition(RocketComponent.Position position) {
+		super.setRelativePosition(position);
+		fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
+	}
+	
+	
+	@Override
+	public void setPositionValue(double value) {
+		super.setPositionValue(value);
+		fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
+	}
+	
+	
+	
+	@Override
+	protected void loadFromPreset(ComponentPreset preset) {
+		if (preset.has(ComponentPreset.OUTER_DIAMETER)) {
+			double outerDiameter = preset.get(ComponentPreset.OUTER_DIAMETER);
+			this.radius = outerDiameter / 2.0;
+			if (preset.has(ComponentPreset.INNER_DIAMETER)) {
+				double innerDiameter = preset.get(ComponentPreset.INNER_DIAMETER);
+				this.thickness = (outerDiameter - innerDiameter) / 2.0;
+			}
+		}
+		
+		super.loadFromPreset(preset);
+		
+		fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
+	}
+	
+	
+	@Override
+	public Type getPresetType() {
+		return ComponentPreset.Type.LAUNCH_LUG;
+	}
+	
+	
+	@Override
+	public Coordinate[] shiftCoordinates(Coordinate[] array) {
+		array = super.shiftCoordinates(array);
+		
+		for (int i = 0; i < array.length; i++) {
+			array[i] = array[i].add(0, shiftY, shiftZ);
+		}
+		
+		return array;
+	}
+	
+	
+	@Override
+	public void componentChanged(ComponentChangeEvent e) {
+		super.componentChanged(e);
+		
+		/*
+		 * shiftY and shiftZ must be computed here since calculating them
+		 * in shiftCoordinates() would cause an infinite loop due to .toRelative
+		 */
+		RocketComponent body;
+		double parentRadius;
+		
+		for (body = this.getParent(); body != null; body = body.getParent()) {
+			if (body instanceof SymmetricComponent)
+				break;
+		}
+		
+		if (body == null) {
+			parentRadius = 0;
+		} else {
+			SymmetricComponent s = (SymmetricComponent) body;
+			double x1, x2;
+			x1 = this.toRelative(Coordinate.NUL, body)[0].x;
+			x2 = this.toRelative(new Coordinate(length, 0, 0), body)[0].x;
+			x1 = MathUtil.clamp(x1, 0, body.getLength());
+			x2 = MathUtil.clamp(x2, 0, body.getLength());
+			parentRadius = Math.max(s.getRadius(x1), s.getRadius(x2));
+		}
+		
+		shiftY = Math.cos(radialDirection) * (parentRadius + radius);
+		shiftZ = Math.sin(radialDirection) * (parentRadius + radius);
+		
+		//		System.out.println("Computed shift: y="+shiftY+" z="+shiftZ);
+	}
+	
+	
+	
+	
+	@Override
+	public double getComponentVolume() {
+		return length * Math.PI * (MathUtil.pow2(radius) - MathUtil.pow2(radius - thickness));
+	}
+	
+	@Override
+	public Collection<Coordinate> getComponentBounds() {
+		ArrayList<Coordinate> set = new ArrayList<Coordinate>();
+		addBound(set, 0, radius);
+		addBound(set, length, radius);
+		return set;
+	}
+	
+	@Override
+	public Coordinate getComponentCG() {
+		return new Coordinate(length / 2, 0, 0, getComponentMass());
+	}
+	
+	@Override
+	public String getComponentName() {
+		// Launch Button
+		return trans.get("LaunchButton.LaunchButton");
+	}
+	
+	@Override
+	public double getLongitudinalUnitInertia() {
+		// 1/12 * (3 * (r2^2 + r1^2) + h^2)
+//		return (3 * (MathUtil.pow2(getOuterRadius()) + MathUtil.pow2(getInnerRadius())) + MathUtil.pow2(getLength())) / 12;
+		return 0.0;
+	}
+	
+	@Override
+	public double getRotationalUnitInertia() {
+		// 1/2 * (r1^2 + r2^2)
+//		return (MathUtil.pow2(getInnerRadius()) + MathUtil.pow2(getOuterRadius())) / 2;
+		return 0.0;
+	}
+	
+	@Override
+	public boolean allowsChildren() {
+		return false;
+	}
+	
+	@Override
+	public boolean isCompatible(Class<? extends RocketComponent> type) {
+		// Allow nothing to be attached to a LaunchButton
+		return false;
+	}
+	
+
+	
+	@Override
+	public double getInstanceSeparation(){
+		return this.instanceSeparation;
+	}
+	
+	@Override
+	public void setInstanceSeparation(final double _separation){
+		this.instanceSeparation = _separation;
+	}
+	
+	@Override
+	public void setInstanceCount( final int newCount ){
+		if( 0 < newCount ){
+			this.instanceCount = newCount;
+		}
+	}
+	
+	@Override
+	public int getInstanceCount(){
+		return this.instanceCount;
+	}
+
+	@Override
+	public String getPatternName(){
+		return (this.getInstanceCount() + "-Line");
+	}
+
+}

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

@@ -12,7 +12,7 @@ import net.sf.openrocket.util.MathUtil;
 
 
 
-public class LaunchLug extends ExternalComponent implements Coaxial {
+public class LaunchLug extends ExternalComponent implements Coaxial, LineInstanceable {
 	
 	private static final Translator trans = Application.getTranslator();
 	
@@ -21,6 +21,9 @@ public class LaunchLug extends ExternalComponent implements Coaxial {
 	
 	private double radialDirection = 0;
 	
+	private int instanceCount = 1;
+	private double instanceSeparation = 0; // front-front along the positive rocket axis. i.e. [1,0,0];
+	
 	/* These are calculated when the component is first attached to any Rocket */
 	private double shiftY, shiftZ;
 	
@@ -95,7 +98,10 @@ public class LaunchLug extends ExternalComponent implements Coaxial {
 	}
 	
 	
-	
+	@Override
+	public boolean isCenterline() {
+		return false;
+	}
 	
 	
 	@Override
@@ -232,4 +238,33 @@ public class LaunchLug extends ExternalComponent implements Coaxial {
 		return false;
 	}
 	
+
+	
+	@Override
+	public double getInstanceSeparation(){
+		return this.instanceSeparation;
+	}
+	
+	@Override
+	public void setInstanceSeparation(final double _separation){
+		this.instanceSeparation = _separation;
+	}
+	
+	@Override
+	public void setInstanceCount( final int newCount ){
+		if( 0 < newCount ){
+			this.instanceCount = newCount;
+		}
+	}
+	
+	@Override
+	public int getInstanceCount(){
+		return this.instanceCount;
+	}
+
+	@Override
+	public String getPatternName(){
+		return (this.getInstanceCount() + "-Line");
+	}
+
 }

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

@@ -0,0 +1,9 @@
+package net.sf.openrocket.rocketcomponent;
+
+public interface LineInstanceable extends Instanceable {
+
+	public double getInstanceSeparation();
+	
+	public void setInstanceSeparation(final double radius);
+	
+}

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

@@ -3,7 +3,7 @@ package net.sf.openrocket.rocketcomponent;
 import net.sf.openrocket.motor.MotorInstance;
 
 /**
- * FlightConfiguration implementation that prevents changing the default value.
+ * FlightConfigurationSet for motors.
  * This is used for motors, where the default value is always no motor.
  */
 public class MotorConfigurationSet extends FlightConfigurationSet<MotorInstance> {
@@ -15,7 +15,7 @@ public class MotorConfigurationSet extends FlightConfigurationSet<MotorInstance>
 	}
 	
 	/**
-	 * Construct a copy of an existing FlightConfigurationImpl.
+	 * Construct a copy of an existing FlightConfigurationSet.
 	 * 
 	 * @param flightConfiguration another flightConfiguration to copy data from.
 	 * @param component		the rocket component on which events are fired when the parameter values are changed

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

@@ -10,23 +10,28 @@ public interface MotorMount extends ChangeSource, FlightConfigurableComponent {
 	
 
 	/**
-	 * is this mount currently configured to carry a motor? 
+	 * Does this mount contain at least one motor?  
 	 * 
 	 * @return  whether the component holds a motor
 	 */
 	public boolean hasMotor();
 
     /**
-     * Set whether the component is acting as a motor mount.
+     * Programmatically : implementing classes will always be <code>(x instanceof MotorMount)</code>
+     * The component may potentially act as a mount, or just a structural component.
+     * This flag indicates how the component behaves. 
+     * 
+     *  @param acting if the component should behave like a motor mount.  False if it's structural only. 
      */
-    public void setActive(boolean mount);
+    public void setMotorMount(boolean acting);
     
 	/**
-	 * Is the component currently acting as a motor mount.
+     * Programmatically : implementing classes will always be <code>(x instanceof MotorMount)</code>
+     * This flag indicates whether the component is acting as a motor mount, or just a structural component
      *  
-	 * @return if the motor mount is turned on
+	 * @return true if the component is acting as a motor mount
 	 */
-	public boolean isActive();
+	public boolean isMotorMount();
 	
 	/**
 	 * Get all motors configured for this mount.

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

@@ -8,13 +8,16 @@ import net.sf.openrocket.startup.Application;
 import net.sf.openrocket.util.BugException;
 import net.sf.openrocket.util.Coordinate;
 
-import org.slf4j.Logger;
+public class PodSet extends ComponentAssembly implements RingInstanceable, OutsideComponent {
-import org.slf4j.LoggerFactory;
-
-public class PodSet extends ComponentAssembly implements OutsideComponent {
 	
 	private static final Translator trans = Application.getTranslator();
-	private static final Logger log = LoggerFactory.getLogger(PodSet.class);
+	//private static final Logger log = LoggerFactory.getLogger(PodSet.class);
+	
+	protected int count = 1;
+
+	protected double angularSeparation = Math.PI;
+	protected double angularPosition_rad = 0;
+	protected double radialPosition_m = 0;
 	
 	public PodSet() {
 		this.count = 2;
@@ -152,6 +155,22 @@ public class PodSet extends ComponentAssembly implements OutsideComponent {
 		return returnValue;
 	}
 
+	@Override
+	public double getAngularOffset() {
+		return this.angularPosition_rad;
+	}
+
+	@Override
+	public String getPatternName(){
+		return (this.getInstanceCount() + "-ring");
+	}
+
+	@Override
+	public double getRadialOffset() {
+		return this.radialPosition_m;
+	}
+
+	
 	@Override
 	public Coordinate[] shiftCoordinates(Coordinate[] c) {
 		checkState();
@@ -191,4 +210,16 @@ public class PodSet extends ComponentAssembly implements OutsideComponent {
 		return buf;
 	}
 
+	@Override
+	public void setAngularOffset(double angle_rad) {
+		this.angularPosition_rad = angle_rad;
+		fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);		
+	}
+
+	@Override
+	public void setRadialOffset(double radius_m) {
+		this.radialPosition_m = radius_m;
+		fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
+	}
+	
 }

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

@@ -16,18 +16,21 @@ import net.sf.openrocket.util.MathUtil;
  *
  * @author Sampo Niskanen <sampo.niskanen@iki.fi>
  */
-public abstract class RingComponent extends StructuralComponent implements Coaxial {
+public abstract class RingComponent extends StructuralComponent implements Coaxial, LineInstanceable {
 	
 	protected boolean outerRadiusAutomatic = false;
 	protected boolean innerRadiusAutomatic = false;
 	
 
-	private double radialDirection = 0;
+	protected double radialDirection = 0;
-	private double radialPosition = 0;
+	protected double radialPosition = 0;
 	
 	private double shiftY = 0;
 	private double shiftZ = 0;
 	
+	protected int instanceCount = 1;
+	// front-front along the positive rocket axis. i.e. [1,0,0];
+	protected double instanceSeparation = 0; 
 	
 
 	@Override
@@ -218,4 +221,33 @@ public abstract class RingComponent extends StructuralComponent implements Coaxi
 		return ringRotationalUnitInertia(getOuterRadius(), getInnerRadius());
 	}
 	
+
+
+	@Override
+	public double getInstanceSeparation(){
+		return this.instanceSeparation;
+	}
+	
+	@Override
+	public void setInstanceSeparation(final double _separation){
+		this.instanceSeparation = _separation;
+	}
+	
+	@Override
+	public void setInstanceCount( final int newCount ){
+		if( 0 < newCount ){
+			this.instanceCount = newCount;
+		}
+	}
+	
+	@Override
+	public int getInstanceCount(){
+		return this.instanceCount;
+	}
+
+	@Override
+	public String getPatternName(){
+		return (this.getInstanceCount() + "-Line");
+	}
+	
 }

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

@@ -0,0 +1,13 @@
+package net.sf.openrocket.rocketcomponent;
+
+public interface RingInstanceable extends Instanceable {
+
+	public double getAngularOffset();
+
+	public double getRadialOffset();
+	
+	public void setAngularOffset(final double radius);
+	
+	public void setRadialOffset(final double radius);
+	
+}

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

@@ -582,7 +582,7 @@ public class Rocket extends RocketComponent {
 			
 			if (c instanceof MotorMount) {
 				MotorMount mount = (MotorMount) c;
-				if (!mount.isActive())
+				if (!mount.isMotorMount())
 					continue;
 				if (mount.getMotorInstance(fcid).getMotor() != null) {
 					return true;

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

@@ -270,6 +270,14 @@ public abstract class RocketComponent implements ChangeSource, Cloneable, Iterab
 	
 	
 	////////////  Methods that may be overridden  ////////////
+	/**
+	 * This enables one-line testing if a component is on the rocket center-line or not.
+	 *   
+	 * @return indicates if this component is centered around the rocket's centerline
+	 */
+	public boolean isCenterline() {
+		return true;
+	}
 
 	
 	/**
@@ -959,14 +967,6 @@ public abstract class RocketComponent implements ChangeSource, Cloneable, Iterab
 		return this.asPositionValue(this.relativePosition);
 	}
 		
-	/**
-	 * 
-	 * @return always returns false for base components.  This enables one-line testing if a component is on the rocket center-line or not.
-	 */
-	public boolean isCenterline() {
-		return true;
-	}
-	
 	public boolean isAncestor(final RocketComponent testComp) {
 		RocketComponent curComp = testComp.parent;
 		while (curComp != null) {

core/src/net/sf/openrocket/rocketvisitors/ListMotorMounts.java

@@ -11,7 +11,7 @@ public class ListMotorMounts extends ListComponents<RocketComponent> {
 	
 	@Override
 	protected void doAction(RocketComponent visitable) {
-		if (visitable instanceof MotorMount && ((MotorMount) visitable).isActive()) {
+		if (visitable instanceof MotorMount && ((MotorMount) visitable).isMotorMount()) {
 			components.add(visitable);
 		}
 	}

core/test/net/sf/openrocket/file/rocksim/importt/BodyTubeHandlerTest.java

@@ -99,11 +99,11 @@ public class BodyTubeHandlerTest extends RocksimTestBase {
         warnings.clear();
 
         handler.closeElement("IsMotorMount", attributes, "1", warnings);
-        Assert.assertTrue(component.isActive());
+        Assert.assertTrue(component.isMotorMount());
         handler.closeElement("IsMotorMount", attributes, "0", warnings);
-        Assert.assertFalse(component.isActive());
+        Assert.assertFalse(component.isMotorMount());
         handler.closeElement("IsMotorMount", attributes, "foo", warnings);
-        Assert.assertFalse(component.isActive());
+        Assert.assertFalse(component.isMotorMount());
 
         handler.closeElement("EngineOverhang", attributes, "-1", warnings);
         Assert.assertEquals(-1d/ RocksimCommonConstants.ROCKSIM_TO_OPENROCKET_LENGTH, component.getMotorOverhang(), 0.001);

core/test/net/sf/openrocket/file/rocksim/importt/InnerBodyTubeHandlerTest.java

@@ -98,11 +98,11 @@ public class InnerBodyTubeHandlerTest extends RocksimTestBase {
         warnings.clear();
 
         handler.closeElement("IsMotorMount", attributes, "1", warnings);
-        Assert.assertTrue(component.isActive());
+        Assert.assertTrue(component.isMotorMount());
         handler.closeElement("IsMotorMount", attributes, "0", warnings);
-        Assert.assertFalse(component.isActive());
+        Assert.assertFalse(component.isMotorMount());
         handler.closeElement("IsMotorMount", attributes, "foo", warnings);
-        Assert.assertFalse(component.isActive());
+        Assert.assertFalse(component.isMotorMount());
 
         handler.closeElement("EngineOverhang", attributes, "-1", warnings);
         Assert.assertEquals(-1d/ RocksimCommonConstants.ROCKSIM_TO_OPENROCKET_LENGTH, component.getMotorOverhang(), 0.001);

swing/src/net/sf/openrocket/gui/configdialog/FinSetConfig.java

@@ -240,7 +240,7 @@ public abstract class FinSetConfig extends RocketComponentConfig {
                             RocketComponent rocketComponent =  iter.next();
 							if (rocketComponent instanceof InnerTube) {
 								InnerTube it = (InnerTube) rocketComponent;
-								if (it.isActive()) {
+								if (it.isMotorMount()) {
 									double depth = ((Coaxial) parent).getOuterRadius() - it.getOuterRadius();
 									//Set fin tab depth
 									if (depth >= 0.0d) {

swing/src/net/sf/openrocket/gui/configdialog/MotorConfig.java

@@ -40,7 +40,7 @@ public class MotorConfig extends JPanel {
 		
 		BooleanModel model;
 		
-		model = new BooleanModel(motorMount, "Active");
+		model = new BooleanModel(motorMount, "MotorMount");
 		JCheckBox check = new JCheckBox(model);
 		////This component is a motor mount
 		check.setText(trans.get("MotorCfg.checkbox.compmotormount"));
@@ -64,7 +64,6 @@ public class MotorConfig extends JPanel {
 		panel.add(new BasicSlider(dm.getSliderModel(-0.02, 0.06)), "w 100lp, wrap unrel");
 		
 		
-		
 		// Select ignition event
 		//// Ignition at:
 		panel.add(new JLabel(trans.get("MotorCfg.lbl.Ignitionat") + " " + CommonStrings.dagger), "");
@@ -113,11 +112,11 @@ public class MotorConfig extends JPanel {
 		
 		// Set enabled status
 		
-		setDeepEnabled(panel, motorMount.isActive());
+		setDeepEnabled(panel, motorMount.isMotorMount());
 		check.addChangeListener(new ChangeListener() {
 			@Override
 			public void stateChanged(ChangeEvent e) {
-				setDeepEnabled(panel, mount.isActive());
+				setDeepEnabled(panel, mount.isMotorMount());
 			}
 		});
 		

swing/src/net/sf/openrocket/gui/dialogs/flightconfiguration/MotorMountTableModel.java

@@ -80,7 +80,7 @@ class MotorMountTableModel extends AbstractTableModel implements ComponentChange
 	public Object getValueAt(int row, int column) {
 		switch (column) {
 		case 0:
-			return new Boolean(potentialMounts.get(row).isActive());
+			return new Boolean(potentialMounts.get(row).isMotorMount());
 			
 		case 1:
 			return potentialMounts.get(row).toString();

swing/src/net/sf/openrocket/gui/main/flightconfigpanel/MotorConfigurationPanel.java

@@ -141,7 +141,7 @@ public class MotorConfigurationPanel extends FlightConfigurablePanel<MotorMount>
 
 			@Override
 			protected boolean includeComponent(MotorMount component) {
-				return component.isActive();
+				return component.isMotorMount();
 			}
 
 		};

swing/src/net/sf/openrocket/gui/print/DesignReport.java

@@ -356,11 +356,11 @@ public class DesignReport {
 				topBorder = true;
 			}
 			
-			if (c instanceof MotorMount && ((MotorMount) c).isActive()) {
+			if (c instanceof MotorMount && ((MotorMount) c).isMotorMount()) {
 				MotorMount mount = (MotorMount) c;
 				
 				// TODO: refactor this... it's redundant with containing if, and could probably be simplified 
-				if (mount.isActive() && (mount.getMotorInstance(motorId) != null) &&(null != mount.getMotorInstance(motorId).getMotor())) {
+				if (mount.isMotorMount() && (mount.getMotorInstance(motorId) != null) &&(null != mount.getMotorInstance(motorId).getMotor())) {
 					Motor motor = mount.getMotorInstance(motorId).getMotor();
 					int motorCount = mount.getMotorCount();