setDiagonal method
Sets the diagonal of the matrix to be arg.
Implementation
void setDiagonal(Vector2 arg) {
  final argStorage = arg._v2storage;
  _m2storage[0] = argStorage[0];
  _m2storage[3] = argStorage[1];
}Sets the diagonal of the matrix to be arg.
void setDiagonal(Vector2 arg) {
  final argStorage = arg._v2storage;
  _m2storage[0] = argStorage[0];
  _m2storage[3] = argStorage[1];
}