Package nl.colorize.multimedialib.math

Class Polygon

java.lang.Object

nl.colorize.multimedialib.math.Polygon

All Implemented Interfaces:

Shape

public class Polygon
extends java.lang.Object
implements Shape

Describes a two-dimensional convex polygon with float precision coordinates. The polygon is described by an array of points, e.g. [x0, y0, x1, y1, ...].

Field Summary

Fields inherited from interface nl.colorize.multimedialib.math.Shape

EPSILON

Constructor Summary

Constructors

Constructor	Description
Polygon(float... points)

Method Summary

Modifier and Type	Method	Description
boolean	contains(Point2D p)
static Polygon	createCircle(Point2D origin, float radius, int numPoints)	Convenience method to create a polygon in the shape of a circle with the specified properties.
static Polygon	createCone(Point2D origin, float startAngle, float arc, float length)	Convenience method to create a polygon in the shape of a circle with the specified properties.
boolean	equals(java.lang.Object o)
int	getNumPoints()
float[]	getPoints()
float	getPointX(int n)
float	getPointY(int n)
int	hashCode()
boolean	intersects(Polygon p)	Returns true if this polygon intersects with the specified other polygon.
void	move(float dx, float dy)
void	setPoints(float... points)
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Polygon

public Polygon(float... points)

Method Detail

setPoints

public void setPoints(float... points)

getPoints

public float[] getPoints()

getNumPoints

public int getNumPoints()

getPointX

public float getPointX(int n)

getPointY

public float getPointY(int n)

move

public void move(float dx,
                 float dy)

contains

public boolean contains(Point2D p)

Specified by:

contains in interface Shape

intersects

public boolean intersects(Polygon p)

Returns true if this polygon intersects with the specified other polygon. Implementation based on http://slick.cokeandcode.com.

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

createCircle

public static Polygon createCircle(Point2D origin,
                                   float radius,
                                   int numPoints)

Convenience method to create a polygon in the shape of a circle with the specified properties.

createCone

public static Polygon createCone(Point2D origin,
                                 float startAngle,
                                 float arc,
                                 float length)

Convenience method to create a polygon in the shape of a circle with the specified properties. The cone's start angle and arc are specified in degrees.