stira::common::Polygon Class Reference

class that contains a polygon. For us, a polygon is a list of vertices in an stl vector, where the first point equals the last point More...

#include <Polygon.h>

Public Member Functions
	Polygon ()
	constructor
void	AddVertex (Point< double > newVertex)
	Adds a vertex to the polygon (inserted at the end) More...
unsigned int	GetNumberOfVertices ()
	Gets the number of vertices in the polygon.
Point< double >	GetVertex (int nr)
	Gets the vertex with given index with coordinates as doubles. More...
Point< int >	GetVertexInt (int nr)
	Gets the vertex with given index with coordinates rounded to integers. More...
void	ChangeVertex (int nr, double x, double y)
	Changes the coordinates of the given vertex. More...
bool	IsPointInPolygon (Point< int > testPoint)
	Checks if a point is inside a polygon Source http://www.ecse.rpi.edu/Homepages/wrf/Research/Short_Notes/pnpoly.html. More...
double	GetPolygonArea ()
	Computes area of a polygon Source http://www.mathopenref.com/coordpolygonarea2.html.

Detailed Description

class that contains a polygon. For us, a polygon is a list of vertices in an stl vector, where the first point equals the last point

Member Function Documentation

void stira::common::Polygon::AddVertex

(

Point< double >

newVertex

)

Adds a vertex to the polygon (inserted at the end)

Parameters

newVertex

vertex to be added to the polygon at the end of list of vertices

void stira::common::Polygon::ChangeVertex	(	int	nr,
		double	x,
		double	y
	)

Changes the coordinates of the given vertex.

Parameters

testPoint

point to be tested if it is inside the polygon

Point< double > stira::common::Polygon::GetVertex

(

int

nr

)

Gets the vertex with given index with coordinates as doubles.

Parameters

nr	index of vertex to get

Referenced by stira::imagetools::DrawImageTools::DrawPolygon().

Point< int > stira::common::Polygon::GetVertexInt

(

int

nr

)

Gets the vertex with given index with coordinates rounded to integers.

Parameters

nr	index of vertex to get

Referenced by stira::imagetools::DrawImageTools::DrawPolygon().

bool stira::common::Polygon::IsPointInPolygon

(

Point< int >

testPoint

)

Checks if a point is inside a polygon Source http://www.ecse.rpi.edu/Homepages/wrf/Research/Short_Notes/pnpoly.html.

Parameters

testPoint

point to be tested if it is inside the polygon

References stira::common::Point< T >::x, and stira::common::Point< T >::y.

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The documentation for this class was generated from the following files:

• common/common/Polygon.h
• common/common/Polygon.cpp