checkpoint autogen tile

[anneal.git] / src / edu / berkeley / qfat / geom / HasBindingGroup.java

diff --git a/src/edu/berkeley/qfat/geom/HasBindingGroup.java b/src/edu/berkeley/qfat/geom/HasBindingGroup.java
index 5b761a3..d884672 100644 (file)
--- a/src/edu/berkeley/qfat/geom/HasBindingGroup.java
+++ b/src/edu/berkeley/qfat/geom/HasBindingGroup.java
@@ -4,7 +4,7 @@ import java.util.*;
 
 public abstract class HasBindingGroup {
 
-    BindingGroup bindingGroup;
+    public BindingGroup bindingGroup;
 
     // know:      self   = bindingGroup[self] * master
     // know:      other  = other.bindingGroup[other] * other.bindingGroup.master
@@ -18,12 +18,28 @@ public abstract class HasBindingGroup {
         if (other.bindingGroup == this.bindingGroup) {
             if (getBindingMatrix(other).equals(bindingMatrix))
                 return;
+            /*
             throw new Error("rebind attempt: "+this+" and "+other+" with "
                             + bindingMatrix
                             + "; expected "
                             + getBindingMatrix(other));
+            */
+            Matrix vom = other.getBindingMatrix(bindingGroup.getMaster());
+            Matrix v2 = bindingMatrix;
+            Matrix v3 = getBindingMatrix(other);
+            Matrix m = vom.inverse().times(v2.inverse()).times(v3).times(vom);
+            bindingGroup.krank = bindingGroup.krank.times(m);
+            /*
+              System.err.println("WARNING: discarding rebind attempt: "+this+" and "+other+m);
+            */
+            //" with "
+            //+ bindingMatrix
+            //+ "; expected "
+            //+ getBindingMatrix(other));
+            return;
         }
 
+
         bindingMatrix =
             getBindingMatrix().inverse()
             .times(bindingMatrix)
@@ -31,12 +47,19 @@ public abstract class HasBindingGroup {
         other.bindingGroup.merge(bindingGroup, bindingMatrix);
     }
 
+    public int bindingGroupSize() {
+        if (bindingGroup == null) return 1;
+        return bindingGroup.size();
+    }
+
+
     public Matrix getBindingMatrix() {
         if (bindingGroup==null) return Matrix.ONE;
         return bindingGroup.getMatrix(this);
     }
 
     public Matrix getBindingMatrix(HasBindingGroup other) {
+        if (other==this) return Matrix.ONE;
         return bindingGroup.getMatrix(this, other);
     }
 
@@ -53,7 +76,7 @@ public abstract class HasBindingGroup {
     }
 
     public boolean isBoundTo(HasBindingGroup t) {
-        return bindingGroup.contains(t);
+        return t==this || (bindingGroup!=null && bindingGroup.contains(t));
     }
 
     public Iterable getBoundPeers() {