setColumn method
Assigns the column
of the matrix arg
Implementation
void setColumn(int column, Vector3 arg) {
final argStorage = arg._v3storage;
final entry = column * 3;
_m3storage[entry + 2] = argStorage[2];
_m3storage[entry + 1] = argStorage[1];
_m3storage[entry + 0] = argStorage[0];
}