java.lang.Object
- com.badlogic.gdx.math.Polygon

All Implemented Interfaces:

Shape2D
```
public class Polygon
extends java.lang.Object
implements Shape2D
```
Encapsulates a 2D polygon defined by it's vertices relative to an origin point (default of 0, 0).

Constructor Summary

Constructors
Constructor	Description
`Polygon()`	Constructs a new polygon with no vertices.
`Polygon(float[] vertices)`	Constructs a new polygon from a float array of parts of vertex points.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`float`	`area()`	Returns the area contained within the polygon.
`boolean`	`contains(float x, float y)`	Returns whether an x, y pair is contained within the polygon.
`boolean`	`contains(Vector2 point)`	Returns whether the given point is contained within the shape.
`void`	`dirty()`	Sets the polygon's world vertices to be recalculated when calling `getTransformedVertices`.
`Rectangle`	`getBoundingRectangle()`	Returns an axis-aligned bounding box of this polygon.
`Vector2`	`getCentroid(Vector2 centroid)`
`float`	`getOriginX()`	Returns the x-coordinate of the polygon's origin point.
`float`	`getOriginY()`	Returns the y-coordinate of the polygon's origin point.
`float`	`getRotation()`	Returns the total rotation applied to the polygon.
`float`	`getScaleX()`	Returns the total horizontal scaling applied to the polygon.
`float`	`getScaleY()`	Returns the total vertical scaling applied to the polygon.
`float[]`	`getTransformedVertices()`	Calculates and returns the vertices of the polygon after scaling, rotation, and positional translations have been applied, as they are position within the world.
`Vector2`	`getVertex(int vertexNum, Vector2 pos)`
`int`	`getVertexCount()`
`float[]`	`getVertices()`	Returns the polygon's local vertices without scaling or rotation and without being offset by the polygon position.
`float`	`getX()`	Returns the x-coordinate of the polygon's position within the world.
`float`	`getY()`	Returns the y-coordinate of the polygon's position within the world.
`void`	`rotate(float degrees)`	Applies additional rotation to the polygon by the supplied degrees.
`void`	`scale(float amount)`	Applies additional scaling to the polygon by the supplied amount.
`void`	`setOrigin(float originX, float originY)`	Sets the origin point to which all of the polygon's local vertices are relative to.
`void`	`setPosition(float x, float y)`	Sets the polygon's position within the world.
`void`	`setRotation(float degrees)`	Sets the polygon to be rotated by the supplied degrees.
`void`	`setScale(float scaleX, float scaleY)`	Sets the amount of scaling to be applied to the polygon.
`void`	`setVertex(int vertexNum, float x, float y)`	Set vertex position
`void`	`setVertices(float[] vertices)`	Sets the polygon's local vertices relative to the origin point, without any scaling, rotating or translations being applied.
`void`	`translate(float x, float y)`	Translates the polygon's position by the specified horizontal and vertical amounts.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Polygon
```
public Polygon()
```
    Constructs a new polygon with no vertices.
  - Polygon
```
public Polygon(float[] vertices)
```
    Constructs a new polygon from a float array of parts of vertex points.
    
    Parameters:
    
    vertices - an array where every even element represents the horizontal part of a point, and the following element representing the vertical part
    
    Throws:
    
    java.lang.IllegalArgumentException - if less than 6 elements, representing 3 points, are provided
- Method Detail
  - getVertices
```
public float[] getVertices()
```
    Returns the polygon's local vertices without scaling or rotation and without being offset by the polygon position.
  - getTransformedVertices
```
public float[] getTransformedVertices()
```
    Calculates and returns the vertices of the polygon after scaling, rotation, and positional translations have been applied, as they are position within the world.
    
    Returns:
    
    vertices scaled, rotated, and offset by the polygon position.
  - setOrigin
```
public void setOrigin(float originX,
                      float originY)
```
    Sets the origin point to which all of the polygon's local vertices are relative to.
  - setPosition
```
public void setPosition(float x,
                        float y)
```
    Sets the polygon's position within the world.
  - setVertices
```
public void setVertices(float[] vertices)
```
    Sets the polygon's local vertices relative to the origin point, without any scaling, rotating or translations being applied.
    
    Parameters:
    
    vertices - float array where every even element represents the x-coordinate of a vertex, and the proceeding element representing the y-coordinate.
    
    Throws:
    
    java.lang.IllegalArgumentException - if less than 6 elements, representing 3 points, are provided
  - setVertex
```
public void setVertex(int vertexNum,
                      float x,
                      float y)
```
    Set vertex position
    
    Parameters:
    
    vertexNum - min=0, max=vertices.length/2-1
    
    Throws:
    
    java.lang.IllegalArgumentException - if vertex doesnt exist
  - translate
```
public void translate(float x,
                      float y)
```
    Translates the polygon's position by the specified horizontal and vertical amounts.
  - setRotation
```
public void setRotation(float degrees)
```
    Sets the polygon to be rotated by the supplied degrees.
  - rotate
```
public void rotate(float degrees)
```
    Applies additional rotation to the polygon by the supplied degrees.
  - setScale
```
public void setScale(float scaleX,
                     float scaleY)
```
    Sets the amount of scaling to be applied to the polygon.
  - scale
```
public void scale(float amount)
```
    Applies additional scaling to the polygon by the supplied amount.
  - dirty
```
public void dirty()
```
    Sets the polygon's world vertices to be recalculated when calling getTransformedVertices.
  - area
```
public float area()
```
    Returns the area contained within the polygon.
  - getVertexCount
```
public int getVertexCount()
```
  - getVertex
```
public Vector2 getVertex(int vertexNum,
                         Vector2 pos)
```
    Returns:
    
    Position(transformed) of vertex
  - getCentroid
```
public Vector2 getCentroid(Vector2 centroid)
```
  - getBoundingRectangle
```
public Rectangle getBoundingRectangle()
```
    Returns an axis-aligned bounding box of this polygon. Note the returned Rectangle is cached in this polygon, and will be reused if this Polygon is changed.
    
    Returns:
    
    this polygon's bounding box Rectangle
  - contains
```
public boolean contains(float x,
                        float y)
```
    Returns whether an x, y pair is contained within the polygon.
    
    Specified by:
    
    contains in interface Shape2D
  - contains
```
public boolean contains(Vector2 point)
```
    Description copied from interface: Shape2D
    
    Returns whether the given point is contained within the shape.
    
    Specified by:
    
    contains in interface Shape2D
  - getX
```
public float getX()
```
    Returns the x-coordinate of the polygon's position within the world.
  - getY
```
public float getY()
```
    Returns the y-coordinate of the polygon's position within the world.
  - getOriginX
```
public float getOriginX()
```
    Returns the x-coordinate of the polygon's origin point.
  - getOriginY
```
public float getOriginY()
```
    Returns the y-coordinate of the polygon's origin point.
  - getRotation
```
public float getRotation()
```
    Returns the total rotation applied to the polygon.
  - getScaleX
```
public float getScaleX()
```
    Returns the total horizontal scaling applied to the polygon.
  - getScaleY
```
public float getScaleY()
```
    Returns the total vertical scaling applied to the polygon.

Class Polygon

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Polygon

Polygon

Method Detail

getVertices

getTransformedVertices

setOrigin

setPosition

setVertices

setVertex

translate

setRotation

rotate

setScale

scale

dirty

area

getVertexCount

getVertex

getCentroid

getBoundingRectangle

contains

contains

getX

getY

getOriginX

getOriginY

getRotation

getScaleX

getScaleY