A common interface used by the Polygon classes. More...
#include <geomtypes.h>
Public Member Functions | |
PolygonInterface () | |
Constructor. | |
virtual | ~PolygonInterface () |
Destructor. | |
virtual void | clear (void)=0 |
Resets this to the empty polygon. | |
virtual bool | empty (void) const =0 |
Returns true if this polygon is empty. | |
virtual size_t | size (void) const =0 |
Returns the number of points in this polygon. | |
virtual int | id (void) const =0 |
Returns the ID value associated with this polygon. | |
virtual const Point & | at (size_t index) const =0 |
Returns a specific point in the polygon. More... | |
void | getBoundingRect (double *minX, double *minY, double *maxX, double *maxY) const |
Returns the bounding rectangle that contains this polygon. More... | |
Polygon | boundingRect (void) const |
Returns the bounding rectangle for this polygon. More... | |
A common interface used by the Polygon classes.
|
pure virtual |
Returns a specific point in the polygon.
[in] | index | The array index of the point to be returned. |
Implemented in Avoid::ReferencingPolygon, and Avoid::Polygon.
Polygon Avoid::PolygonInterface::boundingRect | ( | void | ) | const |
Returns the bounding rectangle for this polygon.
void Avoid::PolygonInterface::getBoundingRect | ( | double * | minX, |
double * | minY, | ||
double * | maxX, | ||
double * | maxY | ||
) | const |
Returns the bounding rectangle that contains this polygon.
If a NULL pointer is passed for any of the arguments, then that value is ignored and not returned.
[out] | minX | The left hand side of the bounding box. |
[out] | minY | The top of the bounding box. |
[out] | maxX | The right hand side of the bounding box. |
[out] | maxY | The bottom of the bounding box. |