// Returns the total offset resulting from two given coordinates.
// The directions used are defined by the coordinate order.
private int GetOffsetFromCoordinates(int coord1, int coord2)
{
Direction2D dir1 = order.GetDirectionFirst();
Direction2D dir2 = order.GetDirectionSecond();
int coord1Offset = GetOffsetFromCoordinate(coord1, dir1);
int coord2Offset = GetOffsetFromCoordinate(coord2, dir2);
return(coord1Offset + coord2Offset);
}
// Returns the array's start index based on the given coordinate order.
// This is equivalent to getting the index at zero-based (0, 0).
private int GetStartIndex(CoordinateOrder2D coordinateOrder)
{
int offset1 = GetStartOffsetFromDirection(coordinateOrder.GetDirectionFirst());
int offset2 = GetStartOffsetFromDirection(coordinateOrder.GetDirectionSecond());
return(offset1 + offset2);
}