[#1889] Add option to flip nose cone to tail cone

core/resources/l10n/messages.properties

@@ -1148,6 +1148,8 @@ NoseConeCfg.tab.General = General
 NoseConeCfg.tab.ttip.General = General properties
 NoseConeCfg.tab.Shoulder = Shoulder
 NoseConeCfg.tab.ttip.Shoulder = Shoulder properties
+NoseConeCfg.checkbox.Flip = Flip to tail cone
+NoseConeCfg.checkbox.Flip.ttip = Flips the nose cone direction to a tail cone.
 
 ! ParachuteConfig
 Parachute.Parachute = Parachute

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

@@ -10,9 +10,11 @@ import net.sf.openrocket.util.Reflection;
 //// BooleanSetter - set a boolean value
 class BooleanSetter implements Setter {
 	private final Reflection.Method setMethod;
+	private Object[] extraParameters = null;
 	
-	public BooleanSetter(Reflection.Method set) {
+	public BooleanSetter(Reflection.Method set, Object... parameters) {
 		setMethod = set;
+		this.extraParameters = parameters;
 	}
 	
 	@Override
@@ -20,12 +22,23 @@ class BooleanSetter implements Setter {
 			WarningSet warnings) {
 		
 		s = s.trim();
+		final boolean setValue;
 		if (s.equalsIgnoreCase("true")) {
-			setMethod.invoke(c, true);
+			setValue = true;
 		} else if (s.equalsIgnoreCase("false")) {
-			setMethod.invoke(c, false);
+			setValue = false;
 		} else {
 			warnings.add(Warning.FILE_INVALID_PARAMETER);
+			return;
+		}
+
+		if (extraParameters != null) {
+			Object[] parameters = new Object[extraParameters.length + 1];
+			parameters[0] = setValue;
+			System.arraycopy(extraParameters, 0, parameters, 1, extraParameters.length);
+			setMethod.invoke(c, parameters);
+		} else {
+			setMethod.invoke(c, setValue);
 		}
 	}
 }

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

@@ -248,7 +248,9 @@ class DocumentConfig {
 				Reflection.findMethod(Transition.class, "setAftShoulderThickness", double.class)));
 		setters.put("Transition:aftshouldercapped", new BooleanSetter(
 				Reflection.findMethod(Transition.class, "setAftShoulderCapped", boolean.class)));
-		
+
+		setters.put("NoseCone:isflipped", new BooleanSetter(
+				Reflection.findMethod(NoseCone.class, "setFlipped", boolean.class, boolean.class), false));
 		// NoseCone - disable disallowed elements
 		setters.put("NoseCone:foreradius", null);
 		setters.put("NoseCone:foreshoulderradius", null);

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

@@ -1,7 +1,10 @@
 package net.sf.openrocket.file.openrocket.savers;
 
+import net.sf.openrocket.rocketcomponent.NoseCone;
+
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Locale;
 
 public class NoseConeSaver extends TransitionSaver {
 
@@ -20,8 +23,23 @@ public class NoseConeSaver extends TransitionSaver {
 
 	@Override
 	protected void addParams(net.sf.openrocket.rocketcomponent.RocketComponent c, List<String> elements) {
+		NoseCone noseCone = (NoseCone) c;
 		super.addParams(c, elements);
-		
+
-		// Transition handles nose cone saving as well
+		if (noseCone.isBaseRadiusAutomatic())
+			elements.add("<aftradius>auto " + noseCone.getBaseRadiusNoAutomatic() + "</aftradius>");
+		else
+			elements.add("<aftradius>" + noseCone.getBaseRadius() + "</aftradius>");
+
+		elements.add("<aftshoulderradius>" + noseCone.getShoulderRadius()
+				+ "</aftshoulderradius>");
+		elements.add("<aftshoulderlength>" + noseCone.getShoulderLength()
+				+ "</aftshoulderlength>");
+		elements.add("<aftshoulderthickness>" + noseCone.getShoulderThickness()
+				+ "</aftshoulderthickness>");
+		elements.add("<aftshouldercapped>" + noseCone.isShoulderCapped()
+				+ "</aftshouldercapped>");
+
+		elements.add("<isflipped>" + noseCone.isFlipped() + "</isflipped>");
 	}
 }

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

@@ -30,8 +30,6 @@ public class TransitionSaver extends SymmetricComponentSaver {
 	protected void addParams(net.sf.openrocket.rocketcomponent.RocketComponent c, List<String> elements) {
 		super.addParams(c, elements);
 		net.sf.openrocket.rocketcomponent.Transition trans = (net.sf.openrocket.rocketcomponent.Transition) c;
-		boolean nosecone = (trans instanceof NoseCone);
-		
 		
 		Transition.Shape shape = trans.getType();
 		elements.add("<shape>" + shape.name().toLowerCase(Locale.ENGLISH) + "</shape>");
@@ -41,14 +39,16 @@ public class TransitionSaver extends SymmetricComponentSaver {
 		if (shape.usesParameter()) {
 			elements.add("<shapeparameter>" + trans.getShapeParameter() + "</shapeparameter>");
 		}
-		
+
-		
+		// Nose cones need other parameter saving, due to the isFlipped() parameter
-		if (!nosecone) {
+		if (trans instanceof NoseCone) {
-			if (trans.isForeRadiusAutomatic())
+			return;
-				elements.add("<foreradius>auto " + trans.getForeRadiusNoAutomatic() + "</foreradius>");
-			else
-				elements.add("<foreradius>" + trans.getForeRadius() + "</foreradius>");
 		}
+
+		if (trans.isForeRadiusAutomatic())
+			elements.add("<foreradius>auto " + trans.getForeRadiusNoAutomatic() + "</foreradius>");
+		else
+			elements.add("<foreradius>" + trans.getForeRadius() + "</foreradius>");
 		
 		if (trans.isAftRadiusAutomatic())
 			elements.add("<aftradius>auto " + trans.getAftRadiusNoAutomatic() + "</aftradius>");
@@ -56,16 +56,14 @@ public class TransitionSaver extends SymmetricComponentSaver {
 			elements.add("<aftradius>" + trans.getAftRadius() + "</aftradius>");
 		
 		
-		if (!nosecone) {
+		elements.add("<foreshoulderradius>" + trans.getForeShoulderRadius()
-			elements.add("<foreshoulderradius>" + trans.getForeShoulderRadius()
+				+ "</foreshoulderradius>");
-					+ "</foreshoulderradius>");
+		elements.add("<foreshoulderlength>" + trans.getForeShoulderLength()
-			elements.add("<foreshoulderlength>" + trans.getForeShoulderLength()
+				+ "</foreshoulderlength>");
-					+ "</foreshoulderlength>");
+		elements.add("<foreshoulderthickness>" + trans.getForeShoulderThickness()
-			elements.add("<foreshoulderthickness>" + trans.getForeShoulderThickness()
+				+ "</foreshoulderthickness>");
-					+ "</foreshoulderthickness>");
+		elements.add("<foreshouldercapped>" + trans.isForeShoulderCapped()
-			elements.add("<foreshouldercapped>" + trans.isForeShoulderCapped()
+				+ "</foreshouldercapped>");
-					+ "</foreshouldercapped>");
-		}
 		
 		elements.add("<aftshoulderradius>" + trans.getAftShoulderRadius()
 				+ "</aftshoulderradius>");

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

@@ -65,7 +65,11 @@ public class PodSetDTO extends BasePartDTO implements AttachableParts {
             } else if (child instanceof BodyTube) {
                 addAttachedPart(new BodyTubeDTO((BodyTube) child));
             } else if (child instanceof NoseCone) {
-                addAttachedPart(new NoseConeDTO((NoseCone) child));
+                if (((NoseCone) child).isFlipped()) {
+                    addAttachedPart(new TransitionDTO((NoseCone) child));
+                } else {
+                    addAttachedPart(new NoseConeDTO((NoseCone) child));
+                }
             } else if (child instanceof Transition) {
                 addAttachedPart(new TransitionDTO((Transition) child));
             }

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

@@ -93,8 +93,12 @@ public class StageDTO {
         externalPart.add(theExternalPartDTO);
     }
 
-    private NoseConeDTO toNoseConeDTO(NoseCone nc) {
+    private AbstractTransitionDTO toNoseConeDTO(NoseCone nc) {
-        return new NoseConeDTO(nc);
+        if (nc.isFlipped()) {
+            return new TransitionDTO(nc);
+        } else {
+            return new NoseConeDTO(nc);
+        }
     }
 
     private BodyTubeDTO toBodyTubeDTO(BodyTube bt) {

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

@@ -56,7 +56,7 @@ public class DefaultSimulationModifierService implements SimulationModifierServi
 		 */
 		
 		addModifier("optimization.modifier.nosecone.length", UnitGroup.UNITS_LENGTH, 1.0, NoseCone.class, "Length");
-		addModifier("optimization.modifier.nosecone.diameter", UnitGroup.UNITS_LENGTH, 2.0, NoseCone.class, "AftRadius", "isAftRadiusAutomatic");
+		addModifier("optimization.modifier.nosecone.diameter", UnitGroup.UNITS_LENGTH, 2.0, NoseCone.class, "BaseRadius", "isBaseRadiusAutomatic");
 		addModifier("optimization.modifier.nosecone.thickness", UnitGroup.UNITS_LENGTH, 1.0, NoseCone.class, "Thickness", "isFilled");
 		
 		addModifier("optimization.modifier.transition.length", UnitGroup.UNITS_LENGTH, 1.0, Transition.class, "Length");

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

@@ -13,6 +13,9 @@ import java.util.EventObject;
 /**
  * Rocket nose cones of various types.  Implemented as a transition with the
  * fore radius == 0.
+ * <p>
+ * The normal nose cone can be converted to a tail cone by setting the {@link #isFlipped} parameter.
+ * This will flip all the aft side dimensions with the fore side dimensions.
  *
  * @author Sampo Niskanen <sampo.niskanen@iki.fi>
  */
@@ -21,6 +24,7 @@ public class NoseCone extends Transition implements InsideColorComponent {
 	private static final Translator trans = Application.getTranslator();
 
 	private InsideColorComponentHandler insideColorComponentHandler = new InsideColorComponentHandler(this);
+	private boolean isFlipped;		// If true, the nose cone is converted to a tail cone
 	
 	/********* Constructors **********/
 	public NoseCone() {
@@ -29,16 +33,12 @@ public class NoseCone extends Transition implements InsideColorComponent {
 	
 	public NoseCone(Transition.Shape type, double length, double radius) {
 		super();
+		this.isFlipped = false;
 		super.setType(type);
-		super.setForeRadiusAutomatic(false);
-		super.setForeRadius(0);
-		super.setForeShoulderLength(0);
-		super.setForeShoulderRadius(0.9 * radius);
-		super.setForeShoulderThickness(0);
-		super.setForeShoulderCapped(filled);
 		super.setThickness(0.002);
 		super.setLength(length);
 		super.setClipped(false);
+		resetForeRadius();
 		
 		super.setAftRadiusAutomatic(false);
 		super.setAftRadius(radius);
@@ -46,86 +46,220 @@ public class NoseCone extends Transition implements InsideColorComponent {
 		super.displayOrder_side = 1;		// Order for displaying the component in the 2D side view
 		super.displayOrder_back = 0;		// Order for displaying the component in the 2D back view
 	}
-	
+
-	
+	/********** Nose cone dimensions  **********/
-	/********** Get/set methods for component parameters **********/
+
-	
+	/**
-	@Override
+	 * Returns the base radius of the nose cone (independent of whether the nose cone is flipped or not).
-	public double getForeRadius() {
+	 * This method should be used over {@link #getAftRadius()} because it works for both normal and flipped nose cones.
-		return 0;
+	 */
-	}
+	public double getBaseRadius() {
-	
+		return isFlipped ? getForeRadius() : getAftRadius();
-	@Override
-	public void setForeRadius(double r) {
-		// No-op
-	}
-	
-	@Override
-	public boolean isForeRadiusAutomatic() {
-		return false;
-	}
-	
-	@Override
-	public void setForeRadiusAutomatic(boolean b) {
-		// No-op
 	}
 
-	@Override
+	/**
-	public boolean usesPreviousCompAutomatic() {
+	 * Returns the raw base radius of the nose cone (independent of whether the nose cone is flipped or not).
-		return false;
+	 * This method should be used over {@link #getAftRadiusNoAutomatic()} because it works for both normal and flipped nose cones.
+	 */
+	public double getBaseRadiusNoAutomatic() {
+		return isFlipped ? getForeRadiusNoAutomatic() : getAftRadiusNoAutomatic();
 	}
 
-	@Override
+	/**
-	public double getForeShoulderLength() {
+	 * Sets the base radius of the nose cone (independent of whether the nose cone is flipped or not).
-		return 0;
+	 * This method should be used over {@link #setAftRadius(double)} because it works for both normal and flipped nose cones.
+	 */
+	public void setBaseRadius(double radius) {
+		if (isFlipped) {
+			setForeRadius(radius);
+		} else {
+			setAftRadius(radius);
+		}
 	}
-	
+
-	@Override
+	/**
-	public double getForeShoulderRadius() {
+	 * Returns whether the base radius of the nose cone takes it settings from the previous/next component
-		return 0;
+	 * (independent of whether the nose cone is flipped or not).
+	 * This method should be used over {@link #isAftRadiusAutomatic()} because it works for both normal and flipped nose cones.
+	 */
+	public boolean isBaseRadiusAutomatic() {
+		return isFlipped ? isForeRadiusAutomatic() : isAftRadiusAutomatic();
 	}
-	
+
-	@Override
+	/**
-	public double getForeShoulderThickness() {
+	 * Sets whether the base radius of the nose cone takes it settings from the previous/next component
-		return 0;
+	 * (independent of whether the nose cone is flipped or not).
+	 * This method should be used over {@link #setAftRadiusAutomatic(boolean)} because it works for both normal and flipped nose cones.
+	 */
+	public void setBaseRadiusAutomatic(boolean auto) {
+		if (isFlipped) {
+			setForeRadiusAutomatic(auto);
+		} else {
+			setAftRadiusAutomatic(auto);
+		}
+
 	}
-	
+
-	@Override
+	/**
-	public boolean isForeShoulderCapped() {
+	 * Returns the shoulder length, regardless of how the nose cone is flipped (independent of whether the nose cone is flipped or not).
-		return false;
+	 * This method should be used over {@link #getAftShoulderLength()} because it works for both normal and flipped nose cones.
+	 */
+	public double getShoulderLength() {
+		return isFlipped ? getForeShoulderLength() : getAftShoulderLength();
 	}
-	
+
-	@Override
+	/**
-	public void setForeShoulderCapped(boolean capped) {
+	 * Sets the shoulder length (independent of whether the nose cone is flipped or not).
-		// No-op
+	 * This method should be used over {@link #setAftShoulderLength(double)} because it works for both normal and flipped nose cones.
+	 */
+	public void setShoulderLength(double length) {
+		if (isFlipped) {
+			setForeShoulderLength(length);
+		} else {
+			setAftShoulderLength(length);
+		}
 	}
-	
+
-	@Override
+	/**
-	public void setForeShoulderLength(double foreShoulderLength) {
+	 * Returns the shoulder radius (independent of whether the nose cone is flipped or not).
-		// No-op
+	 * This method should be used over {@link #getAftShoulderRadius()} because it works for both normal and flipped nose cones.
+	 */
+	public double getShoulderRadius() {
+		return isFlipped ? getForeShoulderRadius() : getAftShoulderRadius();
 	}
-	
+
-	@Override
+	/**
-	public void setForeShoulderRadius(double foreShoulderRadius) {
+	 * Sets the shoulder radius (independent of whether the nose cone is flipped or not).
-		// No-op
+	 * This method should be used over {@link #setAftShoulderRadius(double)} because it works for both normal and flipped nose cones.
+	 */
+	public void setShoulderRadius(double radius) {
+		if (isFlipped) {
+			setForeShoulderRadius(radius);
+		} else {
+			setAftShoulderRadius(radius);
+		}
 	}
-	
+
-	@Override
+	/**
-	public void setForeShoulderThickness(double foreShoulderThickness) {
+	 * Returns the shoulder thickness (independent of whether the nose cone is flipped or not).
-		// No-op
+	 * This method should be used over {@link #getAftShoulderThickness()} because it works for both normal and flipped nose cones.
+	 */
+	public double getShoulderThickness() {
+		return isFlipped ? getForeShoulderThickness() : getAftShoulderThickness();
 	}
-	
+
+	/**
+	 * Sets the shoulder thickness (independent of whether the nose cone is flipped or not).
+	 * This method should be used over {@link #setAftShoulderRadius(double)} because it works for both normal and flipped nose cones.
+	 */
+	public void setShoulderThickness(double thickness) {
+		if (isFlipped) {
+			setForeShoulderThickness(thickness);
+		} else {
+			setAftShoulderThickness(thickness);
+		}
+	}
+
+	/**
+	 * Returns the shoulder cap (independent of whether the nose cone is flipped or not).
+	 * This method should be used over {@link #isAftShoulderCapped()} because it works for both normal and flipped nose cones.
+	 */
+	public boolean isShoulderCapped() {
+		return isFlipped ? isForeShoulderCapped() : isAftShoulderCapped();
+	}
+
+	/**
+	 * Sets the shoulder cap (independent of whether the nose cone is flipped or not).
+	 * This method should be used over {@link #setAftShoulderCapped(boolean)} because it works for both normal and flipped nose cones.
+	 */
+	public void setShoulderCapped(boolean capped) {
+		if (isFlipped) {
+			setForeShoulderCapped(capped);
+		} else {
+			setAftShoulderCapped(capped);
+		}
+	}
+
+	/********** Other  **********/
+
+	/**
+	 * Return true if the nose cone is flipped, i.e. converted to a tail cone, false if it is a regular nose cone.
+	 */
+	public boolean isFlipped() {
+		return isFlipped;
+	}
+
+	/**
+	 * Set the nose cone to be flipped, i.e. converted to a tail cone, or set it to be a regular nose cone.
+	 * @param flipped if true, the nose cone is converted to a tail cone, if false it is a regular nose cone.
+	 * @param sanityCheck whether to check if the auto radius parameter can be used for the new nose cone orientation
+	 */
+	public void setFlipped(boolean flipped, boolean sanityCheck) {
+		if (isFlipped == flipped) {
+			return;
+		}
+
+		setBypassChangeEvent(true);
+		if (flipped) {
+			setForeRadius(getAftRadiusNoAutomatic());
+			setForeRadiusAutomatic(isAftRadiusAutomatic(), sanityCheck);
+			setForeShoulderLength(getAftShoulderLength());
+			setForeShoulderRadius(getAftShoulderRadius());
+			setForeShoulderThickness(getAftShoulderThickness());
+			setForeShoulderCapped(isAftShoulderCapped());
+
+			resetAftRadius();
+		} else {
+			setAftRadius(getForeRadiusNoAutomatic());
+			setAftRadiusAutomatic(isForeRadiusAutomatic(), sanityCheck);
+			setAftShoulderLength(getForeShoulderLength());
+			setAftShoulderRadius(getForeShoulderRadius());
+			setAftShoulderThickness(getForeShoulderThickness());
+			setAftShoulderCapped(isForeShoulderCapped());
+
+			resetForeRadius();
+		}
+		setBypassChangeEvent(false);
+
+		isFlipped = flipped;
+		fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
+	}
+
+	/**
+	 * Set the nose cone to be flipped, i.e. converted to a tail cone, or set it to be a regular nose cone.
+	 * @param flipped if true, the nose cone is converted to a tail cone, if false it is a regular nose cone.
+	 */
+	public void setFlipped(boolean flipped) {
+		setFlipped(flipped, true);
+	}
+
+	private void resetForeRadius() {
+		setForeRadius(0);
+		setForeRadiusAutomatic(false);
+		setForeShoulderLength(0);
+		setForeShoulderRadius(0);
+		setForeShoulderThickness(0);
+		setForeShoulderCapped(false);
+	}
+
+	private void resetAftRadius() {
+		setAftRadius(0);
+		setAftRadiusAutomatic(false);
+		setAftShoulderLength(0);
+		setAftShoulderRadius(0);
+		setAftShoulderThickness(0);
+		setAftShoulderCapped(false);
+	}
+
 	@Override
 	public boolean isClipped() {
 		return false;
 	}
-	
+
 	@Override
 	public void setClipped(boolean b) {
 		// No-op
 	}
-	
-	
 
 	/********** RocketComponent methods **********/
 	
@@ -136,7 +270,7 @@ public class NoseCone extends Transition implements InsideColorComponent {
 
 	@Override
 	protected void loadFromPreset(ComponentPreset preset) {
-		
+		setFlipped(false);
 		//Many parameters are handled by the super class Transition.loadFromPreset
 		super.loadFromPreset(preset);
 	}

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

@@ -5,17 +5,13 @@ import static net.sf.openrocket.util.MathUtil.pow2;
 import static net.sf.openrocket.util.MathUtil.pow3;
 
 import java.util.Collection;
-import java.util.EventObject;
 
-import net.sf.openrocket.appearance.Appearance;
-import net.sf.openrocket.appearance.Decal;
 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;
-import net.sf.openrocket.util.StateChangeListener;
 
 
 public class Transition extends SymmetricComponent implements InsideColorComponent {
@@ -27,8 +23,8 @@ public class Transition extends SymmetricComponent implements InsideColorCompone
 	private double shapeParameter;
 	private boolean clipped; // Not to be read - use isClipped(), which may be overridden
 
-	private double foreRadius, aftRadius;
+	protected double foreRadius, aftRadius;		// Warning: avoid using these directly, use getForeRadius() and getAftRadius() instead (because the definition of the two can change for flipped nose cones)
-	private boolean autoForeRadius, autoAftRadius2; // Whether the start radius is automatic
+	protected boolean autoForeRadius, autoAftRadius; // Whether the start radius is automatic
 
 
 	private double foreShoulderRadius;
@@ -53,7 +49,7 @@ public class Transition extends SymmetricComponent implements InsideColorCompone
 		this.aftRadius = DEFAULT_RADIUS;
 		this.length = DEFAULT_RADIUS * 3;
 		this.autoForeRadius = true;
-		this.autoAftRadius2 = true;
+		this.autoAftRadius = true;
 
 		this.type = Shape.CONICAL;
 		this.shapeParameter = 0;
@@ -81,19 +77,24 @@ public class Transition extends SymmetricComponent implements InsideColorCompone
 	@Override
 	public double getForeRadius() {
 		if (isForeRadiusAutomatic()) {
-			// Get the automatic radius from the front
+			return getAutoForeRadius();
-			double r = -1;
-			SymmetricComponent c = this.getPreviousSymmetricComponent();
-			if (c != null) {
-				r = c.getFrontAutoRadius();
-			}
-			if (r < 0)
-				r = DEFAULT_RADIUS;
-			return r;
 		}
 		return foreRadius;
 	}
 
+	/**
+	 * Returns the automatic radius from the front, taken from the previous component. Returns the default radius if there
+	 * is no previous component.
+	 */
+	protected double getAutoForeRadius() {
+		SymmetricComponent c = this.getPreviousSymmetricComponent();
+		if (c != null) {
+			return c.getFrontAutoRadius();
+		} else {
+			return DEFAULT_RADIUS;
+		}
+	}
+
 	/**
 	 * Return the fore radius that was manually entered, so not the value that the component received from automatic
 	 * fore radius.
@@ -136,13 +137,24 @@ public class Transition extends SymmetricComponent implements InsideColorCompone
 		return autoForeRadius;
 	}
 
-	public void setForeRadiusAutomatic(boolean auto) {
+	/**
+	 * Set the fore radius to automatic mode (takes its value from the previous symmetric component's radius).
+	 *
+	 * @param auto whether to set the fore radius to automatic mode
+	 * @param sanityCheck whether to sanity check auto mode for whether there is a previous component of which you can take the radius
+	 */
+	public void setForeRadiusAutomatic(boolean auto, boolean sanityCheck) {
 		for (RocketComponent listener : configListeners) {
 			if (listener instanceof Transition) {
 				((Transition) listener).setForeRadiusAutomatic(auto);
 			}
 		}
 
+		// You can only set the auto fore radius if it is possible
+		if (sanityCheck) {
+			auto = auto && canUsePreviousCompAutomatic();
+		}
+
 		if (autoForeRadius == auto)
 			return;
 
@@ -152,25 +164,34 @@ public class Transition extends SymmetricComponent implements InsideColorCompone
 		fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
 	}
 
+	public void setForeRadiusAutomatic(boolean auto) {
+		setForeRadiusAutomatic(auto, false);
+	}
+
 
 	////////  Aft radius  /////////
 
 	@Override
 	public double getAftRadius() {
 		if (isAftRadiusAutomatic()) {
-			// Return the auto radius from the rear
+			return getAutoAftRadius();
-			double r = -1;
-			SymmetricComponent c = this.getNextSymmetricComponent();
-			if (c != null) {
-				r = c.getRearAutoRadius();
-			}
-			if (r < 0)
-				r = DEFAULT_RADIUS;
-			return r;
 		}
 		return aftRadius;
 	}
 
+	/**
+	 * Returns the automatic radius from the rear, taken from the next component. Returns the default radius if there
+	 * is no next component.
+	 */
+	protected double getAutoAftRadius() {
+		SymmetricComponent c = this.getNextSymmetricComponent();
+		if (c != null) {
+			return c.getRearAutoRadius();
+		} else {
+			return DEFAULT_RADIUS;
+		}
+	}
+
 	/**
 	 * Return the aft radius that was manually entered, so not the value that the component received from automatic
 	 * zft radius.
@@ -191,10 +212,10 @@ public class Transition extends SymmetricComponent implements InsideColorCompone
 			}
 		}
 
-		if ((this.aftRadius == radius) && (autoAftRadius2 == false))
+		if ((this.aftRadius == radius) && (autoAftRadius == false))
 			return;
 
-		this.autoAftRadius2 = false;
+		this.autoAftRadius = false;
 		this.aftRadius = Math.max(radius, 0);
 
 		if (doClamping && this.thickness > this.foreRadius && this.thickness > this.aftRadius)
@@ -210,25 +231,40 @@ public class Transition extends SymmetricComponent implements InsideColorCompone
 
 	@Override
 	public boolean isAftRadiusAutomatic() {
-		return autoAftRadius2;
+		return autoAftRadius;
 	}
 
-	public void setAftRadiusAutomatic(boolean auto) {
+	/**
+	 * Set the aft radius to automatic mode (takes its value from the next symmetric component's radius).
+	 *
+	 * @param auto whether to set the aft radius to automatic mode
+	 * @param sanityCheck whether to sanity check auto mode for whether there is a next component of which you can take the radius
+	 */
+	public void setAftRadiusAutomatic(boolean auto, boolean sanityCheck) {
 		for (RocketComponent listener : configListeners) {
 			if (listener instanceof Transition) {
 				((Transition) listener).setAftRadiusAutomatic(auto);
 			}
 		}
 
-		if (autoAftRadius2 == auto)
+		// You can only set the auto aft radius if it is possible
+		if (sanityCheck) {
+			auto = auto && canUseNextCompAutomatic();
+		}
+
+		if (autoAftRadius == auto)
 			return;
 
-		autoAftRadius2 = auto;
+		autoAftRadius = auto;
 
 		clearPreset();
 		fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
 	}
 
+	public void setAftRadiusAutomatic(boolean auto) {
+		setAftRadiusAutomatic(auto, false);
+	}
+
 
 	//// Radius automatics
 
@@ -257,6 +293,32 @@ public class Transition extends SymmetricComponent implements InsideColorCompone
 		return isAftRadiusAutomatic();
 	}
 
+	/**
+	 * Checks whether this component can use the automatic radius of the previous symmetric component.
+	 * @return false if there is no previous symmetric component, or if the previous component already has this component
+	 * 			as its auto dimension reference
+	 */
+	public boolean canUsePreviousCompAutomatic() {
+		SymmetricComponent referenceComp = getPreviousSymmetricComponent();
+		if (referenceComp == null) {
+			return false;
+		}
+		return !referenceComp.usesNextCompAutomatic();
+	}
+
+	/**
+	 * Checks whether this component can use the automatic radius of the next symmetric component.
+	 * @return false if there is no next symmetric component, or if the next component already has this component
+	 * 			as its auto dimension reference
+	 */
+	public boolean canUseNextCompAutomatic() {
+		SymmetricComponent referenceComp = getNextSymmetricComponent();
+		if (referenceComp == null) {
+			return false;
+		}
+		return !referenceComp.usesPreviousCompAutomatic();
+	}
+
 
 	////////  Type & shape  /////////
 

fileformat.txt

@@ -58,6 +58,7 @@ The following file format versions exist:
       Added PhotoStudio settings saving (<photostudio>)
       Added override CD parameter (<overridecd>)
       Added stage activeness remembrance (<stage> under <motorconfiguration>)
+      Added <isflipped> parameter for Nose Cones
       Separated <overridesubcomponents> into individual parameters for mass, CG, and CD.
       Rename <fincount> to <instancecount> (<fincount> remains for backward compatibility)
       Rename <position> to <axialoffset> (<position> remains for backward compatibility)

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

@@ -3,6 +3,8 @@ package net.sf.openrocket.gui.configdialog;
 
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
+import java.awt.event.ItemEvent;
+import java.awt.event.ItemListener;
 
 import javax.swing.JCheckBox;
 import javax.swing.JComboBox;
@@ -40,7 +42,7 @@ public class NoseConeConfig extends RocketComponentConfig {
 	private JLabel shapeLabel;
 	private JSpinner shapeSpinner;
 	private JSlider shapeSlider;
-	private final JCheckBox checkAutoAftRadius;
+	private final JCheckBox checkAutoBaseRadius;
 	private static final Translator trans = Application.getTranslator();
 	
 	// Prepended to the description from NoseCone.DESCRIPTIONS
@@ -106,21 +108,21 @@ public class NoseConeConfig extends RocketComponentConfig {
 
 			panel.add(new JLabel(trans.get("NoseConeCfg.lbl.Basediam")));
 
-			final DoubleModel aftRadiusModel = new DoubleModel(component, "AftRadius", 2.0, UnitGroup.UNITS_LENGTH, 0); // Diameter = 2*Radius
+			final DoubleModel baseRadius = new DoubleModel(component, "BaseRadius", 2.0, UnitGroup.UNITS_LENGTH, 0); // Diameter = 2*Radius
-			final JSpinner radiusSpinner = new JSpinner(aftRadiusModel.getSpinnerModel());
+			final JSpinner radiusSpinner = new JSpinner(baseRadius.getSpinnerModel());
 			radiusSpinner.setEditor(new SpinnerEditor(radiusSpinner));
 			panel.add(radiusSpinner, "growx");
 			order.add(((SpinnerEditor) radiusSpinner.getEditor()).getTextField());
 
-			panel.add(new UnitSelector(aftRadiusModel), "growx");
+			panel.add(new UnitSelector(baseRadius), "growx");
-			panel.add(new BasicSlider(aftRadiusModel.getSliderModel(0, 0.04, 0.2)), "w 100lp, wrap 0px");
+			panel.add(new BasicSlider(baseRadius.getSliderModel(0, 0.04, 0.2)), "w 100lp, wrap 0px");
 
-			checkAutoAftRadius = new JCheckBox(aftRadiusModel.getAutomaticAction());
+			checkAutoBaseRadius = new JCheckBox(baseRadius.getAutomaticAction());
 			//// Automatic
-			checkAutoAftRadius.setText(trans.get("NoseConeCfg.checkbox.Automatic"));
+			checkAutoBaseRadius.setText(trans.get("NoseConeCfg.checkbox.Automatic"));
-			panel.add(checkAutoAftRadius, "skip, span 2, wrap");
+			panel.add(checkAutoBaseRadius, "skip, span 2, wrap");
-			order.add(checkAutoAftRadius);
+			order.add(checkAutoBaseRadius);
-			updateCheckboxAutoAftRadius();
+			updateCheckboxAutoBaseRadius(((NoseCone) component).isFlipped());
 		}
 
 		{////  Wall thickness:
@@ -142,10 +144,24 @@ public class NoseConeConfig extends RocketComponentConfig {
 			//// Filled
 			filledCheckbox.setText(trans.get("NoseConeCfg.checkbox.Filled"));
 			filledCheckbox.setToolTipText(trans.get("NoseConeCfg.checkbox.Filled.ttip"));
-			panel.add(filledCheckbox, "skip, span 2, wrap");
+			panel.add(filledCheckbox, "skip, span 2, wrap para");
 			order.add(filledCheckbox);
 		}
 
+		{//// Flip to tail cone:
+			final JCheckBox flipCheckbox = new JCheckBox(new BooleanModel(component, "Flipped"));
+			flipCheckbox.setText(trans.get("NoseConeCfg.checkbox.Flip"));
+			flipCheckbox.setToolTipText(trans.get("NoseConeCfg.checkbox.Flip.ttip"));
+			panel.add(flipCheckbox, "spanx, wrap");
+			order.add(flipCheckbox);
+			flipCheckbox.addItemListener(new ItemListener() {
+				@Override
+				public void itemStateChanged(ItemEvent e) {
+					updateCheckboxAutoBaseRadius(e.getStateChange() == ItemEvent.SELECTED);
+				}
+			});
+		}
+
 		panel.add(new JLabel(""), "growy");
 
 		////  Description
@@ -189,25 +205,29 @@ public class NoseConeConfig extends RocketComponentConfig {
 	 * Sets the checkAutoAftRadius checkbox's enabled state and tooltip text, based on the state of its next component.
 	 * If there is no next symmetric component or if that component already has its auto checkbox checked, the
 	 * checkAutoAftRadius checkbox is disabled.
+	 *
+	 * @param isFlipped	whether the nose cone is flipped
 	 */
-	private void updateCheckboxAutoAftRadius() {
+	private void updateCheckboxAutoBaseRadius(boolean isFlipped) {
-		if (component == null || checkAutoAftRadius == null) return;
+		if (component == null || checkAutoBaseRadius == null) return;
 
 		// Disable check button if there is no component to get the diameter from
-		SymmetricComponent nextComp = ((NoseCone) component).getNextSymmetricComponent();
+		NoseCone noseCone = ((NoseCone) component);
-		if (nextComp == null) {
+		SymmetricComponent referenceComp = isFlipped ? noseCone.getPreviousSymmetricComponent() : noseCone.getNextSymmetricComponent();
-			checkAutoAftRadius.setEnabled(false);
+		if (referenceComp == null) {
-			((NoseCone) component).setAftRadiusAutomatic(false);
+			checkAutoBaseRadius.setEnabled(false);
-			checkAutoAftRadius.setToolTipText(trans.get("NoseConeCfg.checkbox.ttip.Automatic_noReferenceComponent"));
+			((NoseCone) component).setBaseRadiusAutomatic(false);
+			checkAutoBaseRadius.setToolTipText(trans.get("NoseConeCfg.checkbox.ttip.Automatic_noReferenceComponent"));
 			return;
 		}
-		if (!nextComp.usesPreviousCompAutomatic()) {
+		if ((!isFlipped&& !referenceComp.usesPreviousCompAutomatic()) ||
-			checkAutoAftRadius.setEnabled(true);
+				isFlipped && !referenceComp.usesNextCompAutomatic()) {
-			checkAutoAftRadius.setToolTipText(trans.get("NoseConeCfg.checkbox.ttip.Automatic"));
+			checkAutoBaseRadius.setEnabled(true);
+			checkAutoBaseRadius.setToolTipText(trans.get("NoseConeCfg.checkbox.ttip.Automatic"));
 		} else {
-			checkAutoAftRadius.setEnabled(false);
+			checkAutoBaseRadius.setEnabled(false);
-			((NoseCone) component).setAftRadiusAutomatic(false);
+			((NoseCone) component).setBaseRadiusAutomatic(false);
-			checkAutoAftRadius.setToolTipText(trans.get("NoseConeCfg.checkbox.ttip.Automatic_alreadyAuto"));
+			checkAutoBaseRadius.setToolTipText(trans.get("NoseConeCfg.checkbox.ttip.Automatic_alreadyAuto"));
 		}
 	}
 }

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

@@ -613,157 +613,170 @@ public class RocketComponentConfig extends JPanel {
 	
 	protected JPanel shoulderTab() {
 		JPanel panel = new JPanel(new MigLayout("fill"));
-		JPanel sub;
-		DoubleModel m, m2;
 		DoubleModel m0 = new DoubleModel(0);
-		BooleanModel bm;
-		JCheckBox check;
-		JSpinner spin;
-		
 		
 		////  Fore shoulder, not for NoseCone
-		
 		if (!(component instanceof NoseCone)) {
-			sub = new JPanel(new MigLayout("gap rel unrel", "[][65lp::][30lp::]", ""));
+			addForeShoulderSection(panel, m0);
-			
-			//// Fore shoulder
-			sub.setBorder(BorderFactory.createTitledBorder(trans.get("RocketCompCfg.border.Foreshoulder")));
-			
-			
-			////  Radius
-			//// Diameter:
-			sub.add(new JLabel(trans.get("RocketCompCfg.lbl.Diameter")));
-			
-			m = new DoubleModel(component, "ForeShoulderRadius", 2, UnitGroup.UNITS_LENGTH, 0);
-			m2 = new DoubleModel(component, "ForeRadius", 2, UnitGroup.UNITS_LENGTH);
-			
-			spin = new JSpinner(m.getSpinnerModel());
-			spin.setEditor(new SpinnerEditor(spin));
-			sub.add(spin, "growx");
-			order.add(((SpinnerEditor) spin.getEditor()).getTextField());
-			
-			sub.add(new UnitSelector(m), "growx");
-			sub.add(new BasicSlider(m.getSliderModel(m0, m2)), "w 100lp, wrap");
-			
-			
-			////  Length:
-			sub.add(new JLabel(trans.get("RocketCompCfg.lbl.Length")));
-			
-			m = new DoubleModel(component, "ForeShoulderLength", UnitGroup.UNITS_LENGTH, 0);
-			
-			spin = new JSpinner(m.getSpinnerModel());
-			spin.setEditor(new SpinnerEditor(spin));
-			sub.add(spin, "growx");
-			order.add(((SpinnerEditor) spin.getEditor()).getTextField());
-			
-			sub.add(new UnitSelector(m), "growx");
-			sub.add(new BasicSlider(m.getSliderModel(0, 0.02, 0.2)), "w 100lp, wrap");
-			
-			
-			////  Thickness:
-			sub.add(new JLabel(trans.get("RocketCompCfg.lbl.Thickness")));
-			
-			m = new DoubleModel(component, "ForeShoulderThickness", UnitGroup.UNITS_LENGTH, 0);
-			m2 = new DoubleModel(component, "ForeShoulderRadius", UnitGroup.UNITS_LENGTH);
-			
-			spin = new JSpinner(m.getSpinnerModel());
-			spin.setEditor(new SpinnerEditor(spin));
-			sub.add(spin, "growx");
-			order.add(((SpinnerEditor) spin.getEditor()).getTextField());
-			
-			sub.add(new UnitSelector(m), "growx");
-			sub.add(new BasicSlider(m.getSliderModel(m0, m2)), "w 100lp, wrap");
-			
-			
-			////  Capped
-			bm = new BooleanModel(component, "ForeShoulderCapped");
-			check = new JCheckBox(bm);
-			//// End capped
-			check.setText(trans.get("RocketCompCfg.checkbox.Endcapped"));
-			check.setToolTipText(trans.get("RocketCompCfg.checkbox.Endcapped.ttip"));
-			sub.add(check, "spanx");
-			order.add(check);
-			
-			
-			panel.add(sub);
 		}
-		
+
-		
 		////  Aft shoulder
+		addAftShoulderSection(panel, m0);
+
+		return panel;
+	}
+
+	private void addForeShoulderSection(JPanel panel, DoubleModel m0) {
+		DoubleModel m;
+		JCheckBox check;
+		JPanel sub;
+		DoubleModel m2;
+		JSpinner spin;
+		BooleanModel bm;
 		sub = new JPanel(new MigLayout("gap rel unrel", "[][65lp::][30lp::]", ""));
-		
+
-		if (component instanceof NoseCone)
+		//// Fore shoulder
-			//// Nose cone shoulder
+		sub.setBorder(BorderFactory.createTitledBorder(trans.get("RocketCompCfg.border.Foreshoulder")));
-			sub.setBorder(BorderFactory.createTitledBorder(trans.get("RocketCompCfg.title.Noseconeshoulder")));
+
-		else
+
-			//// Aft shoulder
-			sub.setBorder(BorderFactory.createTitledBorder(trans.get("RocketCompCfg.title.Aftshoulder")));
-		
-		
 		////  Radius
 		//// Diameter:
 		sub.add(new JLabel(trans.get("RocketCompCfg.lbl.Diameter")));
-		
+
-		m = new DoubleModel(component, "AftShoulderRadius", 2, UnitGroup.UNITS_LENGTH, 0);
+		m = new DoubleModel(component, "ForeShoulderRadius", 2, UnitGroup.UNITS_LENGTH, 0);
-		m2 = new DoubleModel(component, "AftRadius", 2, UnitGroup.UNITS_LENGTH);
+		m2 = new DoubleModel(component, "ForeRadius", 2, UnitGroup.UNITS_LENGTH);
-		
+
 		spin = new JSpinner(m.getSpinnerModel());
 		spin.setEditor(new SpinnerEditor(spin));
 		sub.add(spin, "growx");
 		order.add(((SpinnerEditor) spin.getEditor()).getTextField());
-		
+
 		sub.add(new UnitSelector(m), "growx");
 		sub.add(new BasicSlider(m.getSliderModel(m0, m2)), "w 100lp, wrap");
-		
+
-		
+
 		////  Length:
 		sub.add(new JLabel(trans.get("RocketCompCfg.lbl.Length")));
-		
+
-		m = new DoubleModel(component, "AftShoulderLength", UnitGroup.UNITS_LENGTH, 0);
+		m = new DoubleModel(component, "ForeShoulderLength", UnitGroup.UNITS_LENGTH, 0);
-		
+
 		spin = new JSpinner(m.getSpinnerModel());
 		spin.setEditor(new SpinnerEditor(spin));
 		sub.add(spin, "growx");
 		order.add(((SpinnerEditor) spin.getEditor()).getTextField());
-		
+
 		sub.add(new UnitSelector(m), "growx");
 		sub.add(new BasicSlider(m.getSliderModel(0, 0.02, 0.2)), "w 100lp, wrap");
-		
+
-		
+
 		////  Thickness:
 		sub.add(new JLabel(trans.get("RocketCompCfg.lbl.Thickness")));
-		
+
-		m = new DoubleModel(component, "AftShoulderThickness", UnitGroup.UNITS_LENGTH, 0);
+		m = new DoubleModel(component, "ForeShoulderThickness", UnitGroup.UNITS_LENGTH, 0);
-		m2 = new DoubleModel(component, "AftShoulderRadius", UnitGroup.UNITS_LENGTH);
+		m2 = new DoubleModel(component, "ForeShoulderRadius", UnitGroup.UNITS_LENGTH);
-		
+
 		spin = new JSpinner(m.getSpinnerModel());
 		spin.setEditor(new SpinnerEditor(spin));
 		sub.add(spin, "growx");
 		order.add(((SpinnerEditor) spin.getEditor()).getTextField());
-		
+
 		sub.add(new UnitSelector(m), "growx");
 		sub.add(new BasicSlider(m.getSliderModel(m0, m2)), "w 100lp, wrap");
-		
+
-		
+
 		////  Capped
-		bm = new BooleanModel(component, "AftShoulderCapped");
+		bm = new BooleanModel(component, "ForeShoulderCapped");
 		check = new JCheckBox(bm);
 		//// End capped
 		check.setText(trans.get("RocketCompCfg.checkbox.Endcapped"));
 		check.setToolTipText(trans.get("RocketCompCfg.checkbox.Endcapped.ttip"));
 		sub.add(check, "spanx");
 		order.add(check);
-		
+
-		
 		panel.add(sub);
-		
-		
-		return panel;
 	}
-	
+
-	
+	private void addAftShoulderSection(JPanel panel, DoubleModel m0) {
-	
+		JSpinner spin;
-	
+		JCheckBox check;
+		DoubleModel m;
+		DoubleModel m2;
+		JPanel sub;
+		BooleanModel bm;
+		sub = new JPanel(new MigLayout("gap rel unrel", "[][65lp::][30lp::]", ""));
+
+		String valueNameShoulder = "AftShoulder";
+		String valueNameRadius = "AftRadius";
+
+		if (component instanceof NoseCone) {
+			// Nose cones have a special shoulder method to cope with flipped nose cones
+			valueNameShoulder = "Shoulder";
+			valueNameRadius = "BaseRadius";
+			//// Nose cone shoulder
+			sub.setBorder(BorderFactory.createTitledBorder(trans.get("RocketCompCfg.title.Noseconeshoulder")));
+		} else {
+			//// Aft shoulder
+			sub.setBorder(BorderFactory.createTitledBorder(trans.get("RocketCompCfg.title.Aftshoulder")));
+		}
+
+
+		////  Radius
+		//// Diameter:
+		sub.add(new JLabel(trans.get("RocketCompCfg.lbl.Diameter")));
+
+		m = new DoubleModel(component, valueNameShoulder+"Radius", 2, UnitGroup.UNITS_LENGTH, 0);
+		m2 = new DoubleModel(component, valueNameRadius, 2, UnitGroup.UNITS_LENGTH);
+
+		spin = new JSpinner(m.getSpinnerModel());
+		spin.setEditor(new SpinnerEditor(spin));
+		sub.add(spin, "growx");
+		order.add(((SpinnerEditor) spin.getEditor()).getTextField());
+
+		sub.add(new UnitSelector(m), "growx");
+		sub.add(new BasicSlider(m.getSliderModel(m0, m2)), "w 100lp, wrap");
+
+
+		////  Length:
+		sub.add(new JLabel(trans.get("RocketCompCfg.lbl.Length")));
+
+		m = new DoubleModel(component, valueNameShoulder+"Length", UnitGroup.UNITS_LENGTH, 0);
+
+		spin = new JSpinner(m.getSpinnerModel());
+		spin.setEditor(new SpinnerEditor(spin));
+		sub.add(spin, "growx");
+		order.add(((SpinnerEditor) spin.getEditor()).getTextField());
+
+		sub.add(new UnitSelector(m), "growx");
+		sub.add(new BasicSlider(m.getSliderModel(0, 0.02, 0.2)), "w 100lp, wrap");
+
+
+		////  Thickness:
+		sub.add(new JLabel(trans.get("RocketCompCfg.lbl.Thickness")));
+
+		m = new DoubleModel(component, valueNameShoulder+"Thickness", UnitGroup.UNITS_LENGTH, 0);
+		m2 = new DoubleModel(component, valueNameShoulder+"Radius", UnitGroup.UNITS_LENGTH);
+
+		spin = new JSpinner(m.getSpinnerModel());
+		spin.setEditor(new SpinnerEditor(spin));
+		sub.add(spin, "growx");
+		order.add(((SpinnerEditor) spin.getEditor()).getTextField());
+
+		sub.add(new UnitSelector(m), "growx");
+		sub.add(new BasicSlider(m.getSliderModel(m0, m2)), "w 100lp, wrap");
+
+
+		////  Capped
+		bm = new BooleanModel(component, valueNameShoulder+"Capped");
+		check = new JCheckBox(bm);
+		//// End capped
+		check.setText(trans.get("RocketCompCfg.checkbox.Endcapped"));
+		check.setToolTipText(trans.get("RocketCompCfg.checkbox.Endcapped.ttip"));
+		sub.add(check, "spanx");
+		order.add(check);
+
+		panel.add(sub);
+	}
+
 	/*
 	 * Private inner class to handle events in componentNameField.
 	 */

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

@@ -228,18 +228,16 @@ public class TransitionConfig extends RocketComponentConfig {
 	private void updateCheckboxAutoAftRadius() {
 		if (component == null || checkAutoAftRadius == null) return;
 
-		// Disable check button if there is no component to get the diameter from
+		Transition transition = (Transition) component;
-		SymmetricComponent nextComp = ((Transition) component).getNextSymmetricComponent();
+		boolean enabled = transition.canUseNextCompAutomatic();
-		if (nextComp == null) {
+		if (enabled) {														// Can use auto radius
+			checkAutoAftRadius.setEnabled(true);
+			checkAutoAftRadius.setToolTipText(trans.get("TransitionCfg.checkbox.ttip.Automatic"));
+		} else if (transition.getNextSymmetricComponent() == null) {		// No next component to take the auto radius from
 			checkAutoAftRadius.setEnabled(false);
 			((Transition) component).setAftRadiusAutomatic(false);
 			checkAutoAftRadius.setToolTipText(trans.get("TransitionCfg.checkbox.ttip.Automatic_noReferenceComponent"));
-			return;
+		} else {															// Next component already has its auto radius checked
-		}
-		if (!nextComp.usesPreviousCompAutomatic()) {
-			checkAutoAftRadius.setEnabled(true);
-			checkAutoAftRadius.setToolTipText(trans.get("TransitionCfg.checkbox.ttip.Automatic"));
-		} else {
 			checkAutoAftRadius.setEnabled(false);
 			((Transition) component).setAftRadiusAutomatic(false);
 			checkAutoAftRadius.setToolTipText(trans.get("TransitionCfg.checkbox.ttip.Automatic_alreadyAuto"));
@@ -254,18 +252,16 @@ public class TransitionConfig extends RocketComponentConfig {
 	private void updateCheckboxAutoForeRadius() {
 		if (component == null || checkAutoForeRadius == null) return;
 
-		// Disable check button if there is no component to get the diameter from
+		Transition transition = (Transition) component;
-		SymmetricComponent prevComp = ((Transition) component).getPreviousSymmetricComponent();
+		boolean enabled = transition.canUsePreviousCompAutomatic();
-		if (prevComp == null) {
+		if (enabled) {														// Can use auto radius
+			checkAutoForeRadius.setEnabled(true);
+			checkAutoForeRadius.setToolTipText(trans.get("TransitionCfg.checkbox.ttip.Automatic"));
+		} else if (transition.getPreviousSymmetricComponent() == null) {		// No next component to take the auto radius from
 			checkAutoForeRadius.setEnabled(false);
 			((Transition) component).setForeRadiusAutomatic(false);
 			checkAutoForeRadius.setToolTipText(trans.get("TransitionCfg.checkbox.ttip.Automatic_noReferenceComponent"));
-			return;
+		} else {															// Next component already has its auto radius checked
-		}
-		if (!prevComp.usesNextCompAutomatic()) {
-			checkAutoForeRadius.setEnabled(true);
-			checkAutoForeRadius.setToolTipText(trans.get("TransitionCfg.checkbox.ttip.Automatic"));
-		} else {
 			checkAutoForeRadius.setEnabled(false);
 			((Transition) component).setForeRadiusAutomatic(false);
 			checkAutoForeRadius.setToolTipText(trans.get("TransitionCfg.checkbox.ttip.Automatic_alreadyAuto"));

swing/src/net/sf/openrocket/gui/dialogs/ScaleDialog.java

@@ -83,7 +83,7 @@ public class ScaleDialog extends JDialog {
 		// SymmetricComponent
 		addScaler(SymmetricComponent.class, "Thickness", "isFilled", SCALERS_NO_OFFSET);
 		
-		// Transition + Nose cone
+		// Transition
 		addScaler(Transition.class, "ForeRadius", "isForeRadiusAutomatic", SCALERS_NO_OFFSET);
 		addScaler(Transition.class, "AftRadius", "isAftRadiusAutomatic", SCALERS_NO_OFFSET);
 		addScaler(Transition.class, "ForeShoulderRadius", SCALERS_NO_OFFSET);
@@ -92,6 +92,12 @@ public class ScaleDialog extends JDialog {
 		addScaler(Transition.class, "AftShoulderRadius", SCALERS_NO_OFFSET);
 		addScaler(Transition.class, "AftShoulderThickness", SCALERS_NO_OFFSET);
 		addScaler(Transition.class, "AftShoulderLength", SCALERS_NO_OFFSET);
+
+		// Nose cone
+		addScaler(NoseCone.class, "BaseRadius", "isBaseRadiusAutomatic", SCALERS_NO_OFFSET);
+		addScaler(NoseCone.class, "ShoulderRadius", SCALERS_NO_OFFSET);
+		addScaler(NoseCone.class, "ShoulderThickness", SCALERS_NO_OFFSET);
+		addScaler(NoseCone.class, "ShoulderLength", SCALERS_NO_OFFSET);
 		
 		// Body tube
 		addScaler(BodyTube.class, "OuterRadius", "isOuterRadiusAutomatic", SCALERS_NO_OFFSET);
@@ -559,6 +565,10 @@ public class ScaleDialog extends JDialog {
 		}
 		Collections.reverse(classes);	// Always do the super component scales first (can cause problems otherwise in the scale order)
 		for (Class<?> cl : classes) {
+			// Don't use the super-class methods of transitions for nose cones
+			if (cl == Transition.class && component instanceof NoseCone) {
+				continue;
+			}
 			List<Scaler> list = SCALERS_NO_OFFSET.get(cl);
 			if (list != null && list.size() > 0) {
 				for (Scaler s : list) {