I would like my default constructor to create & initialize all the objects shown in my code snippet. Then I would like my parameterized constructor to call the default constructor, thus creating and initializing those objects, that can then be used in the parameratized constructor without getting a NullReferenceException.
In this situation, I'm not really sure what the best (most efficient, less code, etc.) way to use constructors is. I'd prefer to use constructor chaining.
Again, I have a very elementary understanding of constructors, so if this is not possible, then please just tell me so, and tell me what you would do in this situation.
class Rectangle
{
public Line left { get; set; }
public Line top { get; set; }
public Line right { get; set; }
public Line bottom { get; set; }
public Rectangle() : this(new Line()) { }
public Rectangle(Line diagnonal)
{
left = new Line();
top = new Line();
right = new Line();
bottom = new Line();
Point beginningDiagonalPoint = new Point();
Point endingDiagonalPoint = new Point();
beginningDiagonalPoint = diagnonal.startPoint;
endingDiagonalPoint = diagnonal.endPoint;
int begXC = beginningDiagonalPoint.xCoord;
int begYC = beginningDiagonalPoint.yCoord;
int endXC = endingDiagonalPoint.xCoord;
int endYC = endingDiagonalPoint.yCoord;
Point rightSideEnd = new Point();
rightSideEnd.xCoord = endXC;
rightSideEnd.yCoord = begYC;
Point leftSideEnd = new Point();
leftSideEnd.xCoord = begXC;
leftSideEnd.yCoord = endYC;
// ----------- right side definitions -------------
right.startPoint = endingDiagonalPoint;
right.endPoint = rightSideEnd;
// ------------ left side definitions --------------
left.startPoint = beginningDiagonalPoint;
left.endPoint = leftSideEnd;
// ------------ top side definitions -------------
top.startPoint = leftSideEnd;
top.endPoint = endingDiagonalPoint;
// ------------ bottom side definitions -----------
bottom.startPoint = rightSideEnd;
bottom.endPoint = beginningDiagonalPoint;
}
}
I just added
: this()
after the parametrized constructor. It was a bit of guess, but it seems to work.