/** Rotate the source IntMatrix clockwise and return the new created one. */
public static IntMatrix transform(IntMatrix source) {
IntMatrix target = new IntMatrix(source.getWidth(), source.getHeight());
for (int i = 0; i < target.getHeight(); i++) {
for (int j = 0; j < target.getWidth(); j++) {
target.set(i, j, source.get(source.getHeight() - j - 1, i));
}
}
return target;
}
/** Add the other IntMatrix to this one. */
public void add(IntMatrix other, Position pos) {
for (int i = 0; i < other.getHeight(); i++) {
for (int j = 0; j < other.getWidth(); j++) {
if (other.get(i, j) > 0) {
this.set(pos.getRow() + i, pos.getColumn() + j, other.get(i, j));
}
}
}
}
/** Return true if part of the other IntMatrix can be placed in this one. */
public boolean canPartlyContain(IntMatrix other, Position pos, int begin) {
if (pos.getRow() < 0 || pos.getColumn() < 0) {
return false;
}
if (pos.getColumn() + other.getWidth() > this.width) {
return false;
}
if (pos.getRow() + other.getHeight() - begin > this.height) {
return false;
}
for (int i = begin; i < other.getHeight(); i++) {
for (int j = 0; j < other.getWidth(); j++) {
if (other.get(i, j) > 0 && this.get(i + pos.getRow() - begin, j + pos.getColumn()) > 0) {
return false;
}
}
}
return true;
}