TPoint Class Reference
Stores a two-dimensional point in Cartesian co-ordinates.
Its data members (iX and iY) are public and can be manipulated directly, or by means of the functions provided. Functions are provided to set and manipulate the point, and to compare points for equality.
Constructor & Destructor Documentation
TPoint(TUninitialized)
Constructs default point, initialising its iX and iY members to zero.
TPoint()
Constructs default point, initialising its iX and iY members to zero.
TPoint(TInt, TInt)
Constructs a point with the specified x and y co-ordinates.
Parameters
| TInt aX | The x co-ordinate value. |
| TInt aY | The y co-ordinate value. |
Member Functions Documentation
AsSize()
| IMPORT_C TSize | AsSize | ( | ) | const |
Gets the size of the rectangle whose top left hand corner is the origin of the screen co-ordinates and whose bottom right hand corner is this point.
SetXY(TInt, TInt)
Sets the x and y co-ordinates for this point.
Parameters
| TInt aX | The value to assign to the x co-ordinate. |
| TInt aY | The value to assign to the y co-ordinate. |
operator!=(const TPoint &)
Compares two points for inequality.
For two points to be unequal, either their x or their y co-ordinate values must be different.
Parameters
| const TPoint & aPoint | The point to be compared with this point. |
operator+(const TPoint &)
The operator adds the specified point to this point, and returns the resulting value.
Parameters
| const TPoint & aPoint | The point to be added to this point. |
operator+(const TSize &)
TSize addition operator.
The operator adds the specified TSize to this point, and returns the resulting value.
The operation proceeds by:
1. adding the width value of the TSize to the x co-ordinate value
2. adding the height value of the TSize to the y co-ordinate value.
Parameters
| const TSize & aSize | The TSize to be added to this TPoint. |
operator+=(const TPoint &)
TPoint addition assignment operator.
The operator adds the specified point to this point, and assigns the result back to this point.
Parameters
| const TPoint & aPoint | The point to be added. |
operator+=(const TSize &)
TSize addition assignment operator.
The operator adds the specified TSize to this point, and assigns the result back to this point.
The operation proceeds by:
1. adding the width value of the TSize to the x co-ordinate value
2. adding the height value of the TSize to the y co-ordinate value
Parameters
| const TSize & aSize | The TSize to be added to this point. |
operator-(const TPoint &)
TPoint subtraction operator.
The operator subtracts the specified point from this point, and returns the resulting value.
Parameters
| const TPoint & aPoint | The point to be subtracted from this point. |
operator-(const TSize &)
TSize subtraction operator.
The operator subtracts the specified TSize from this point, and returns the resulting value.
The operation proceeds by:
1. subtracting the width value of the TSize from the x co-ordinate value
2. subtracting the height value of the TSize from the y co-ordinate value.
Parameters
| const TSize & aSize | The TSize to be subtracted. |
operator-()
| IMPORT_C TPoint | operator- | ( | ) | const |
Unary minus operator.
The operator returns the negation of this point.
operator-=(const TPoint &)
TPoint subtraction assignment operator.
The operator subtracts the specified point from this point, and assigns the result back to this point.
Parameters
| const TPoint & aPoint | The point to be subtracted. |
operator-=(const TSize &)
TSize subtraction assignment operator.
The operator subtracts the specified TSize from this point, and assigns the result back to this point.
The operation proceeds by:
1. subtracting the width value of the TSize from the x co-ordinate value
2. subtracting the height value of the TSize from the y co-ordinate value
Parameters
| const TSize & aSize | The TSize to be subtracted. |
operator==(const TPoint &)
Compares two points for equality.
For two points to be equal, both their x and y co-ordinate values must be equal.
Parameters
| const TPoint & aPoint | The point to be compared with this point. |
Member Enumerations Documentation
Member Data Documentation
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v1.0.