/** In case of a EQ, due to the instantion to one variable to val */
public void filterOnInst(IntVar v, int val) throws ContradictionException {
if (!v.contains(val + cste)) {
v.instantiateTo(val - cste, this);
} else if (!v.contains(val - cste)) {
v.instantiateTo(val + cste, this);
} else {
if (v.hasEnumeratedDomain()) {
DisposableRangeIterator rit = v.getRangeIterator(true);
try {
while (rit.hasNext()) {
int from = rit.min();
int to = rit.max();
for (int value = from; value <= to; value++) {
if (value != (val - cste) && value != (val + cste)) {
v.removeValue(value, this);
}
}
rit.next();
}
} finally {
rit.dispose();
}
} else {
v.updateBounds(val - cste, val + cste, this);
}
}
}
/**
* Initial propagation in case of EQ and enumerated domains
*
* @throws ContradictionException
*/
public void filterFromVarToVar(IntVar var1, IntVar var2) throws ContradictionException {
DisposableRangeIterator it = var1.getRangeIterator(true);
try {
while (it.hasNext()) {
int from = it.min();
int to = it.max();
for (int value = from; value <= to; value++)
if (!var2.contains(value - cste) && !var2.contains(value + cste)) {
var1.removeValue(value, this);
}
it.next();
}
} finally {
it.dispose();
}
}