/** Sets this bitmap to the contents of the argument. Both bitmaps must be the same size. */
public void setFrom(BitMap other) {
if (Assert.ASSERTS_ENABLED) {
Assert.that(size() == other.size(), "must have same size");
}
for (int index = 0; index < sizeInWords(); index++) {
data[index] = other.data[index];
}
}
/** Both bitmaps must be the same size. */
public boolean isSame(BitMap other) {
if (Assert.ASSERTS_ENABLED) {
Assert.that(size() == other.size(), "must have same size");
}
for (int index = 0; index < sizeInWords(); index++) {
if (data[index] != (other.data[index])) return false;
}
return true;
}
/**
* Sets this bitmap to the logical union of it and the argument. Both bitmaps must be the same
* size. Returns true if a change was caused in this bitmap.
*/
public boolean setUnion(BitMap other) {
if (Assert.ASSERTS_ENABLED) {
Assert.that(size() == other.size(), "must have same size");
}
boolean changed = false;
for (int index = 0; index < sizeInWords(); index++) {
int temp = data[index] | other.data[index];
changed = changed || (temp != data[index]);
data[index] = temp;
}
return changed;
}