3 files changed, 33 insertions, 8 deletions
diff --git a/src/graphui/classes/com/jogamp/graph/ui/Container.java b/src/graphui/classes/com/jogamp/graph/ui/Container.java
index 3cc8e2ce4..845d41c0c 100644
--- a/src/graphui/classes/com/jogamp/graph/ui/Container.java
+++ b/src/graphui/classes/com/jogamp/graph/ui/Container.java
@@ -48,8 +48,18 @@ public interface Container {
 
     void addShape(Shape s);
 
-    /** Removes given shape, , w/o {@link Shape#destroy(com.jogamp.opengl.GL2ES2, com.jogamp.graph.curve.opengl.RegionRenderer) destroying} them. */
-    void removeShape(Shape s);
+    /**
+     * Removes given shape, w/o {@link Shape#destroy(com.jogamp.opengl.GL2ES2, com.jogamp.graph.curve.opengl.RegionRenderer) destroying} them.
+     * @return the removed shape or null if not contained
+     */
+    Shape removeShape(Shape s);
+
+    /**
+     * Removes shape at given index, w/o {@link Shape#destroy(com.jogamp.opengl.GL2ES2, com.jogamp.graph.curve.opengl.RegionRenderer) destroying} them.
+     * @return the removed shape
+     * @throws IndexOutOfBoundsException if index is out of bounds, i.e. (index < 0 || index >= size())
+     */
+    Shape removeShape(final int idx);
 
     void addShapes(Collection<? extends Shape> shapes);
 
diff --git a/src/graphui/classes/com/jogamp/graph/ui/Group.java b/src/graphui/classes/com/jogamp/graph/ui/Group.java
index e831676ed..e748969cf 100644
--- a/src/graphui/classes/com/jogamp/graph/ui/Group.java
+++ b/src/graphui/classes/com/jogamp/graph/ui/Group.java
@@ -104,15 +104,25 @@ public class Group extends Shape implements Container {
     @Override
     public void addShape(final Shape s) {
         shapes.add(s);
+        markShapeDirty();
     }
 
     /** Removes given shape, keeps it alive. */
     @Override
-    public void removeShape(final Shape s) {
-        shapes.remove(s);
+    public Shape removeShape(final Shape s) {
+        final Shape r = shapes.remove(s) ? s : null;
+        markShapeDirty();
+        return r;
     }
 
-    /** Removes all given shapes and destroys them. */
+    @Override
+    public Shape removeShape(final int idx) {
+        final Shape r = shapes.remove(idx);
+        markShapeDirty();
+        return r;
+    }
+
+    /** Removes given shape and destroy it. */
     public void removeShape(final GL2ES2 gl, final RegionRenderer renderer, final Shape s) {
         s.setDebugBox(0f);
         shapes.remove(s);
diff --git a/src/graphui/classes/com/jogamp/graph/ui/Scene.java b/src/graphui/classes/com/jogamp/graph/ui/Scene.java
index a0980246c..c5fb5cd01 100644
--- a/src/graphui/classes/com/jogamp/graph/ui/Scene.java
+++ b/src/graphui/classes/com/jogamp/graph/ui/Scene.java
@@ -221,11 +221,16 @@ public final class Scene implements Container, GLEventListener {
         shapes.add(s);
     }
     @Override
-    public void removeShape(final Shape s) {
+    public Shape removeShape(final Shape s) {
         s.setDebugBox(0f);
-        shapes.remove(s);
+        return shapes.remove(s) ? s : null;
     }
-    /** Removes all given shapes and destroys them. */
+    @Override
+    public Shape removeShape(final int idx) {
+        return shapes.remove(idx);
+    }
+
+    /** Removes given shape and destroy it. */
     public void removeShape(final GL2ES2 gl, final Shape s) {
         s.setDebugBox(0f);
         shapes.remove(s);