fixed some visual display bugs improper auto-zoom.

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

@@ -311,16 +311,41 @@ public class BodyTube extends SymmetricComponent implements MotorMount, Coaxial
 	@Override
 	public Collection<Coordinate> getComponentBounds() {
 		Collection<Coordinate> bounds = new ArrayList<Coordinate>(8);
-		// not exact, but should *usually* give the right bounds
-		Coordinate ref = this.getLocation()[0];
-		double r = getOuterRadius();
-		addBound(bounds, ref.x, r);
-		addBound(bounds, ref.x + length, r);
+		double x_min_shape = 0;
+		double x_max_shape = this.length;
+		double r_max_shape = getOuterRadius();
+		
+		Coordinate[] locs = this.getLocation();
+		// not strictly accurate, but this should provide an acceptable estimate for total vehicle size
+		double x_min_inst = Double.MAX_VALUE;
+		double x_max_inst = Double.MIN_VALUE;
+		double r_max_inst = 0.0;
+		
+		// refactor: get component inherent bounds
+		for (Coordinate cur : locs) {
+			double x_cur = cur.x;
+			double r_cur = MathUtil.hypot(cur.y, cur.z);
+			if (x_min_inst > x_cur) {
+				x_min_inst = x_cur;
+			}
+			if (x_max_inst < x_cur) {
+				x_max_inst = x_cur;
+			}
+			if (r_cur > r_max_inst) {
+				r_max_inst = r_cur;
+			}
+		}
+		
+		// combine the position bounds with the inherent shape bounds
+		double x_min = x_min_shape + x_min_inst;
+		double x_max = x_max_shape + x_max_inst;
+		double r_max = r_max_shape + r_max_inst;
+		
+		addBoundingBox(bounds, x_min, x_max, r_max);
 		return bounds;
 	}
 	
 	
-	
 	/**
 	 * Check whether the given type can be added to this component.  BodyTubes allow any
 	 * InternalComponents or ExternalComponents, excluding BodyComponents, to be added.

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

@@ -615,23 +615,41 @@ public abstract class FinSet extends ExternalComponent {
 	}
 	
 	
+	
 	/**
-	 * Adds the fin set's bounds to the collection.
+	 * Adds bounding coordinates to the given set.  The body tube will fit within the
+	 * convex hull of the points.
+	 *
+	 * Currently the points are simply a rectangular box around the body tube.
 	 */
 	@Override
 	public Collection<Coordinate> getComponentBounds() {
-		List<Coordinate> bounds = new ArrayList<Coordinate>();
-		double refx = this.getLocation()[0].x;
-		double r = getBodyRadius();
+		Collection<Coordinate> bounds = new ArrayList<Coordinate>(8);
+		
+		// should simply return this component's bounds in this component's body frame.
+		
+		double x_min = Double.MAX_VALUE;
+		double x_max = Double.MIN_VALUE;
+		double r_max = 0.0;
 		
 		for (Coordinate point : getFinPoints()) {
-			addFinBound(bounds, refx + point.x, point.y + r);
+			double hypot = MathUtil.hypot(point.y, point.z);
+			double x_cur = point.x;
+			if (x_min > x_cur) {
+				x_min = x_cur;
+			}
+			if (x_max < x_cur) {
+				x_max = x_cur;
+			}
+			if (r_max < hypot) {
+				r_max = hypot;
+			}
 		}
 		
+		addBoundingBox(bounds, x_min, x_max, r_max);
 		return bounds;
 	}
 	
-	
 	/**
 	 * Adds the 2d-coordinate bound (x,y) to the collection for both z-components and for
 	 * all fin rotations.

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

@@ -1831,6 +1831,13 @@ public abstract class RocketComponent implements ChangeSource, Cloneable, Iterab
 	
 	
 	
+	/**
+	 * Helper method to add eight bounds in a box around the rocket centerline.  This box will be (x_max - x_min) long, and 2*r wide/high.
+	 */
+	protected static final void addBoundingBox(Collection<Coordinate> bounds, double x_min, double x_max, double r) {
+		addBound(bounds, x_min, r);
+		addBound(bounds, x_max, r);
+	}
 	
 	/**
 	 * Helper method to add four bounds rotated around the given x coordinate at radius 'r', and 90deg between each.

swing/src/net/sf/openrocket/gui/rocketfigure/LaunchLugShapes.java

@@ -13,13 +13,13 @@ public class LaunchLugShapes extends RocketComponentShape {
 	public static RocketComponentShape[] getShapesSide(
 			net.sf.openrocket.rocketcomponent.RocketComponent component, 
 			Transformation transformation,
-			Coordinate instanceOffset) {
+			Coordinate componentAbsoluteLocation) {
 	
 		net.sf.openrocket.rocketcomponent.LaunchLug lug = (net.sf.openrocket.rocketcomponent.LaunchLug)component;
 
 		double length = lug.getLength();
 		double radius = lug.getOuterRadius();
-		Coordinate[] start = transformation.transform(lug.toAbsolute(instanceOffset));
+		Coordinate[] start = transformation.transform( lug.getLocation());
 
 		Shape[] s = new Shape[start.length];
 		for (int i=0; i < start.length; i++) {