Added PerspectiveCamera.getWidthAngle(). Removed commented-out code

from Camera. Added error checking code to Group.


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/joglutils/trunk@54 83d24430-9974-4f80-8418-2cc3294053b9

1 files changed, 8 insertions, 0 deletions

diff --git a/src/net/java/joglutils/msg/nodes/Group.java b/src/net/java/joglutils/msg/nodes/Group.java
index df3232d..ccf06f0 100644
--- a/src/net/java/joglutils/msg/nodes/Group.java
+++ b/src/net/java/joglutils/msg/nodes/Group.java
@@ -48,11 +48,15 @@ public class Group extends Node {
 
   /** Append a child node to the list of children nodes this group node is managing. */
   public void addChild(Node child) {
+    if (child == null)
+      throw new IllegalArgumentException("child may not be null");
     children.add(child);
   }
 
   /** Adds a child so that it becomes the one with the given index. */
   public void insertChild(int index, Node child) {
+    if (child == null)
+      throw new IllegalArgumentException("child may not be null");
     children.add(index, child);
   }
 
@@ -102,6 +106,8 @@ public class Group extends Node {
      greater than the number of children
   */
   public void replaceChild(int index, Node newChild) throws IndexOutOfBoundsException {
+    if (newChild == null)
+      throw new IllegalArgumentException("child may not be null");
     removeChild(index);
     insertChild(index, newChild);
   }
@@ -111,6 +117,8 @@ public class Group extends Node {
       oldChild as argument, and call replaceChild(int, SoNode*) if the
       child is found. */
   public void replaceChild(Node oldChild, Node newChild) {
+    if (newChild == null)
+      throw new IllegalArgumentException("child may not be null");
     int idx = findChild(oldChild);
     if (idx >= 0)
       replaceChild(idx, newChild);