X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;ds=sidebyside;f=org.simantics.g3d.vtk%2Fsrc%2Forg%2Fsimantics%2Fg3d%2Fvtk%2Fcommon%2FAbstractVTKNodeMap.java;h=b762200786217a0434515a068a8d0f89cbe222e6;hb=b32696a059ab6f9e01e16df26f1cdf0d8fbf1e91;hp=674a71f2987953f0cf1ace01014b1deb9a68103e;hpb=53d55c24c779745f188bdb18d32f71d20acb61b2;p=simantics%2F3d.git

diff --git a/org.simantics.g3d.vtk/src/org/simantics/g3d/vtk/common/AbstractVTKNodeMap.java b/org.simantics.g3d.vtk/src/org/simantics/g3d/vtk/common/AbstractVTKNodeMap.java
index 674a71f2..b7622007 100644
--- a/org.simantics.g3d.vtk/src/org/simantics/g3d/vtk/common/AbstractVTKNodeMap.java
+++ b/org.simantics.g3d.vtk/src/org/simantics/g3d/vtk/common/AbstractVTKNodeMap.java
@@ -11,9 +11,11 @@
  *******************************************************************************/
 package org.simantics.g3d.vtk.common;
 
+import java.util.ArrayDeque;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
+import java.util.Deque;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
@@ -48,7 +50,7 @@ import vtk.vtkProp;
 
 public abstract class AbstractVTKNodeMap<E extends INode> implements VTKNodeMap<E>, IMappingListener, RenderListener, NodeListener, UndoRedoSupport.ChangeListener{
 
-	private static final boolean DEBUG = false;
+	private static final boolean DEBUG = true;
 	
 	protected Session session;
 	protected IMapping<Object,E> mapping;
@@ -426,6 +428,16 @@ public abstract class AbstractVTKNodeMap<E extends INode> implements VTKNodeMap<
 		return n + "@" + Integer.toHexString(n.hashCode());
 	}
 	
+	protected boolean filterChange(List<Pair<E,String>> list,E n) {
+	    for (int i = list.size()-1; i >= 0; i--) {
+            if (list.get(i).first == n) {
+                list.remove(i);
+                return true;
+            }
+        }
+	    return false;
+	}
+	
 	@SuppressWarnings("unchecked")
 	protected void updateCycle() {
 		rem.clear();
@@ -435,6 +447,25 @@ public abstract class AbstractVTKNodeMap<E extends INode> implements VTKNodeMap<
 		
 		
 		synchronized (syncMutex) {
+		    // Check for overlapping additions and deletions, prevent deleting objects that are also added and vice versa.
+		    Deque<E> stack = new ArrayDeque<E>();
+	        for (Pair<E, String> n : added) {
+	            stack.add(n.first);
+	        }
+	        while (!stack.isEmpty()) {
+	            E n = stack.pop();
+	            boolean conflict = filterChange(removed, n);
+	            if (conflict) {
+	                filterChange(added, n);   
+	            }
+	            if (n instanceof ParentNode) {
+	                ParentNode<INode> pn = (ParentNode<INode>)n;
+	                for (INode cn : pn.getNodes()) {
+	                    stack.push((E)cn);
+	                }
+	            }
+	        }
+	        
 			rem.addAll(removed);
 			add.addAll(added);
 			for (E e : updated.getKeys()) {
@@ -448,6 +479,8 @@ public abstract class AbstractVTKNodeMap<E extends INode> implements VTKNodeMap<
 			updated.clear();
 		}
 		
+		
+		
 		for (Pair<E, String> n : rem) {
 			stopListening(n.first);
 			removeActor(n.first);