checkpoint

[anneal.git] / src / edu / berkeley / qfat / bind / BindingGroup.java

diff --git a/src/edu/berkeley/qfat/bind/BindingGroup.java b/src/edu/berkeley/qfat/bind/BindingGroup.java
index 9356ec4..501fb81 100644 (file)
--- a/src/edu/berkeley/qfat/bind/BindingGroup.java
+++ b/src/edu/berkeley/qfat/bind/BindingGroup.java
@@ -1,6 +1,5 @@
 package edu.berkeley.qfat.bind;
 import edu.berkeley.qfat.geom.*;
-import javax.media.opengl.*;
 import java.util.*;
 
 /**
@@ -10,15 +9,24 @@ import java.util.*;
  */
 class BindingGroup<T extends HasBindingGroup> implements Iterable<T> {
 
+    /** the arbitrarily-chosen master of the binding group */
     private T                  master     = null;
-    private AffineConstraint   constraint = new AffineConstraint.All();
+
+    /** the affine constraint, in master coordinates, of this binding group */
+    private AffineConstraint   constraint = AffineConstraint.ALL;
+
+    /**
+     *  For each member of the binding group, the matrix which must be
+     *  multiplied by the master to get the member's position
+     */
     private HashMap<T,Matrix>  matrices   = new HashMap<T,Matrix>();
 
-    public BindingGroup(T master) {
+    BindingGroup(T master) {
         this.master = master;
         matrices.put(master, Matrix.ONE);
     }
 
+    /** the size of this binding group */
     int size() { return matrices.size(); }
 
     /** merge another binding group into this one */
@@ -45,19 +53,19 @@ class BindingGroup<T extends HasBindingGroup> implements Iterable<T> {
         bg.matrices = null;
     }
 
-    public Matrix getMatrix(T t) { return matrices.get(t); }
+    Matrix getMatrix(T t) { return matrices.get(t); }
 
     public Iterator<T> iterator() { return matrices.keySet().iterator(); }
 
     /** t1 = getMatrix(t1, t2) * t2 */
-    public Matrix getMatrix(T t1, T t2) {
+    Matrix getMatrix(T t1, T t2) {
         //                    t1 = getMatrix(t1) * master
         // getMatrix(t2)^-1 * t2 =                 master
         //                    t1 = getMatrix(t1) * getMatrix(t2)^-1 * t2
         return getMatrix(t1).times(getMatrix(t2).inverse());
     }
 
-    public AffineConstraint getAffineConstraint(T t) {
+    AffineConstraint getAffineConstraint(T t) {
         return constraint.multiply(matrices.get(t));
     }
 
@@ -88,7 +96,7 @@ class BindingGroup<T extends HasBindingGroup> implements Iterable<T> {
         matrices = newmatrices;
     }
 
-    public boolean contains(HasBindingGroup t) {
+    boolean contains(HasBindingGroup t) {
         return matrices.get((T)t) != null;
     }
 }