/** tracks an equivalence class of geometric objects which are related to each other by transformation matrices */
public class BindingGroup<T extends HasBindingGroup> implements Iterable<T> {
- private T master = null;
- private HashMap<T,Matrix> matrices = new HashMap<T,Matrix>();
+ private T master = null;
+ private AffineConstraint constraint = new AffineConstraint.All();
+ private HashMap<T,Matrix> matrices = new HashMap<T,Matrix>();
public BindingGroup(T master) {
this.master = master;
public int size() { return matrices.size(); }
public void merge(BindingGroup<T> bg, Matrix m) {
- if (bg==this) throw new Error();
+ if (bg==this) {
+ if (m.equalsModuloEpsilon(Matrix.ONE, 0.001f)) return;
+ System.err.println(m.getAffineConstraint(0.001f));
+ return;
+ }
+
for(HasBindingGroup hbg : bg.matrices.keySet()) {
matrices.put((T)hbg, bg.matrices.get(hbg).times(m));
hbg.bindingGroup = this;
}
- Matrix v = getMatrix(bg.master, master);
+ // FIXME: what if points do not fall on the merged constraint-line?
+ AffineConstraint ac = bg.constraint.multiply(getMatrix(master, bg.master));
+ constraint = constraint.intersect(ac, 0.001f);
HashSet<HasBindingGroup> stuff = new HashSet<HasBindingGroup>();
for(HasBindingGroup hbg : bg.matrices.keySet())
return getMatrix(t1).times(getMatrix(t2).inverse());
}
+ public AffineConstraint getConstraint(T t) {
+ return constraint.multiply(matrices.get(t));
+ }
+
public void unbind(T trem) {
if (trem != master) {
matrices.remove(trem);