georegression.struct.shapes

Class Polygon2D_F32

java.lang.Object

georegression.struct.shapes.Polygon2D_F32

All Implemented Interfaces:

java.io.Serializable

public class Polygon2D_F32
extends java.lang.Object
implements java.io.Serializable

Describes a polygon in 2D.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
FastQueue<Point2D_F32>	vertexes

Constructor Summary

Constructors

Constructor and Description
Polygon2D_F32()
Polygon2D_F32(float... points)
Polygon2D_F32(int numVertexes)
Polygon2D_F32(Polygon2D_F32 a)

Method Summary

Modifier and Type	Method and Description
float	areaSimple() Returns the area for simply polygons.
Polygon2D_F32	copy()
void	flip()
Point2D_F32	get(int index)
LineSegment2D_F32	getLine(int index, LineSegment2D_F32 storage) Returns the line/edge defined by vertex index and index+1.
boolean	isCCW() true if the order of vertexes is in counter clockwise order.
boolean	isConvex()
boolean	isEquivalent(Polygon2D_F32 a, float tol)
boolean	isIdentical(Polygon2D_F32 a, float tol)
boolean	isInside(Point2D_F32 p) Returns true if the point is inside the polygon.
void	set(int index, float x, float y)
void	set(Polygon2D_F32 orig)
int	size()
java.lang.String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

vertexes

public FastQueue<Point2D_F32> vertexes

Constructor Detail

Polygon2D_F32

public Polygon2D_F32(Polygon2D_F32 a)

Polygon2D_F32

public Polygon2D_F32(int numVertexes)

Polygon2D_F32

public Polygon2D_F32(float... points)

Polygon2D_F32

public Polygon2D_F32()

Method Detail

set

public void set(Polygon2D_F32 orig)

set

public void set(int index,
                float x,
                float y)

get

public Point2D_F32 get(int index)

size

public int size()

copy

public Polygon2D_F32 copy()

areaSimple

public float areaSimple()

Returns the area for simply polygons. Non-self intersecting convex or concave.

Returns:

area

isInside

public boolean isInside(Point2D_F32 p)

Returns true if the point is inside the polygon. Points along the border are ambiguously considered inside or outside.

Parameters:

p - A point

Returns:

true if inside and false if outside

See Also:

Intersection2D_F32.containConcave(Polygon2D_F32, Point2D_F32), Intersection2D_F32.containConcave(Polygon2D_F32, Point2D_F32)

isCCW

public boolean isCCW()

true if the order of vertexes is in counter clockwise order.

Returns:

true if ccw or false if cw

isConvex

public boolean isConvex()

isIdentical

public boolean isIdentical(Polygon2D_F32 a,
                           float tol)

isEquivalent

public boolean isEquivalent(Polygon2D_F32 a,
                            float tol)

flip

public void flip()

getLine

public LineSegment2D_F32 getLine(int index,
                                 LineSegment2D_F32 storage)

Returns the line/edge defined by vertex index and index+1.

Parameters:

index - Index of the line

Returns:

A new instance of the line segment.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object