X-Git-Url: http://git.megacz.com/?p=anneal.git;a=blobdiff_plain;f=src%2Fedu%2Fberkeley%2Fqfat%2Fgeom%2FBindingGroup.java;h=5f6bf2bfe3f67f2e30bb52da7fdcd941a0aed8c6;hp=8ea271ef600c75b62a15d5d80f360eb76d20b578;hb=33fcd7732290bcd1c7108ba9388af173fd139ee2;hpb=de98420094a537a70140842ff185e6d113ad270e

diff --git a/src/edu/berkeley/qfat/geom/BindingGroup.java b/src/edu/berkeley/qfat/geom/BindingGroup.java
index 8ea271e..5f6bf2b 100644
--- a/src/edu/berkeley/qfat/geom/BindingGroup.java
+++ b/src/edu/berkeley/qfat/geom/BindingGroup.java
@@ -12,11 +12,16 @@ public class BindingGroup<T extends HasBindingGroup> implements Iterable<T> {
         matrices.put(master, Matrix.ONE);
     }
 
+    public int size() { return matrices.size(); }
+
     public void merge(BindingGroup<T> bg, Matrix m) {
+        if (bg==this) throw new Error();
         for(HasBindingGroup hbg : bg.matrices.keySet()) {
             matrices.put((T)hbg, bg.matrices.get(hbg).times(m));
             hbg.bindingGroup = this;
         }
+        for(HasBindingGroup hbg : bg.matrices.keySet())
+            hbg.bindingGroupChanged(this);
         bg.matrices.clear();
         bg.master = null;
     }