Package buildengine.math.shape

Class Polygon

java.lang.Object

buildengine.math.shape.Shape

buildengine.math.shape.Polygon

Direct Known Subclasses:

Line, Rectangle

public abstract class Polygon
extends Shape

Polygon All not-round shapes. For example a triangle.

Author:

Kai v. Maurik

See Also:

• Specifies the corner points of the Polygon.

Field Summary

Fields

Modifier and Type	Field	Description
protected double	rotation
protected final Vector2f[]	vertices	Vertices of the Polygon.
static final int	VERTICES_LENGTH	Default vertices length

Fields inherited from class buildengine.math.shape.Shape

center, diameter

Constructor Summary

Constructors

Constructor	Description
Polygon(Vector2f[] vertices, float diameter, Vector2f center)
Polygon(Vector2f[] vertices, Vector2f center, float diameter, double rotation)

Method Summary

Modifier and Type	Method	Description
Vector2f[]	getAxes()	Gets the normalized axes of every edge of the Polygon.
double	getRotation()
Vector2f[]	getVertices()
SAT.Projection	project(Vector2f axis)	Project vertices on an axis
void	setRotation(double rotation)

Methods inherited from class buildengine.math.shape.Shape

getCenter, getDiameter

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

VERTICES_LENGTH

public static final int VERTICES_LENGTH

Default vertices length

See Also:

• Constant Field Values

vertices

protected final Vector2f[] vertices

Vertices of the Polygon. The vertices are to be CW(Counter-Clockwise) defined.

rotation

protected double rotation

Constructor Details

Polygon

public Polygon(Vector2f[] vertices,
 float diameter,
 Vector2f center)

Parameters:

vertices - Specifies how many cords the Polygon consists of.

center - The default center for rotation calculations.

Polygon

public Polygon(Vector2f[] vertices,
 Vector2f center,
 float diameter,
 double rotation)

Parameters:

vertices - Specifies how many cords the Polygon consists of.

center - The default center for rotation calculations.

rotation - The rotation of the object.

Method Details

project

public SAT.Projection project(Vector2f axis)

Project vertices on an axis

Returns:

A new Projection object.

See Also:

• vertices

getAxes

public Vector2f[] getAxes()

Gets the normalized axes of every edge of the Polygon. This is used in for collision detection.

Returns:

axes of all edges.

getVertices

public Vector2f[] getVertices()

Returns:

vertices of Polygon

getRotation

public double getRotation()

setRotation

public void setRotation(double rotation)