Detailed Description
The PPolygoni class represents a 2D closed polygon with 32-bit int coordinates.
Definition at line 30 of file PPolygoni.h.
#include <PPolygoni.h>
Constructor & Destructor Documentation
◆ PPolygoni() [1/3]
Constructs a polygon from the specified list of 2D-points.
◆ PPolygoni() [2/3]
| PPolygoni::PPolygoni | ( | const PRectanglei & | r | ) |
Constructs a polygon from the specified rectangle.
◆ PPolygoni() [3/3]
| PPolygoni::PPolygoni | ( | const PPolygoni & | other | ) |
Constructs a shared copy of other.
◆ ~PPolygoni()
|
virtual |
Destroys this object.
Member Function Documentation
◆ AddPoint() [1/2]
| PPolygoni& PPolygoni::AddPoint | ( | papillon::int32 | x, |
| papillon::int32 | y, | ||
| papillon::int32 | index = -1 |
||
| ) |
Inserts a point to this polygon at the specified index.
If index is -1 or invalid, then add the point at the end.
AddPoint() can be chained.
◆ AddPoint() [2/2]
Inserts a point to this polygon at the specified index.
If index is -1 or invalid, then add the point at the end.
AddPoint() can be chained.
◆ Clear()
| void PPolygoni::Clear | ( | ) |
Removes all points of this polygon.
◆ GetBoundingRectangle()
| PRectanglei PPolygoni::GetBoundingRectangle | ( | ) | const |
Returns the bounding rectangle of this polygon.
◆ GetConvexHull()
| PPolygoni PPolygoni::GetConvexHull | ( | ) | const |
Returns the convex hull of this polygon.
If the polygon is convex, then the convex hull is the same polygon.
◆ GetFirstPoint()
| PPoint2Di PPolygoni::GetFirstPoint | ( | ) | const |
Returns the first point of this polygon of PPoint2Di(0,0) if the polygon is empty.
◆ GetLastPoint()
| PPoint2Di PPolygoni::GetLastPoint | ( | ) | const |
Returns the last point of this polygon of PPoint2Di(0,0) if the polygon is empty.
◆ GetPoint()
| PPoint2Di PPolygoni::GetPoint | ( | papillon::int32 | index | ) | const |
Returns the point with the specified index.
Returns PPoint2Di(0,0) if the index is invalid.
◆ Intersected()
Returns a polygon which is the intersection of this polygon and other.
◆ IsEmpty()
| bool PPolygoni::IsEmpty | ( | ) | const |
Returns true if this polygon has no points, false otherwise.
◆ operator=()
Performs a shared copy of other to this object.
◆ SetPoint()
| void PPolygoni::SetPoint | ( | papillon::int32 | index, |
| const PPoint2Di & | pt | ||
| ) |
Sets the coordinates of the point with the specified index.
Do nothing if the index is invalid.
◆ Size()
| papillon::int32 PPolygoni::Size | ( | ) | const |
Returns the number of points in this polygon.