X-Git-Url: http://git.megacz.com/?p=anneal.git;a=blobdiff_plain;f=src%2Fedu%2Fberkeley%2Fqfat%2Fgeom%2FBindingGroup.java;fp=src%2Fedu%2Fberkeley%2Fqfat%2Fgeom%2FBindingGroup.java;h=aec9329a1b1e306b5bbb026d6e9d88bce5d60771;hp=d1ff8b8f570ebd860c037feca5b02ba547fbeb59;hb=e6ede2b794c97801f3890af9ea634e67012420ef;hpb=2b09dab499516873839b9bdbc972c980829e9bac

diff --git a/src/edu/berkeley/qfat/geom/BindingGroup.java b/src/edu/berkeley/qfat/geom/BindingGroup.java
index d1ff8b8..aec9329 100644
--- a/src/edu/berkeley/qfat/geom/BindingGroup.java
+++ b/src/edu/berkeley/qfat/geom/BindingGroup.java
@@ -13,6 +13,7 @@ public class BindingGroup<T extends HasBindingGroup> implements Iterable<T> {
     }
 
     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;