org.newdawn.slick.geom
Class Polygon

java.lang.Object
  extended by org.newdawn.slick.geom.Shape
      extended by org.newdawn.slick.geom.Polygon
All Implemented Interfaces:
java.io.Serializable

public class Polygon
extends Shape

A polygon implementation meeting the Shape contract.

Author:
Mark
See Also:
Serialized Form

Field Summary
 
Fields inherited from class org.newdawn.slick.geom.Shape
boundingCircleRadius, center, maxX, maxY, minX, minY, points, pointsDirty, trianglesDirty, tris, x, y
 
Constructor Summary
Polygon()
          Create an empty polygon
Polygon(float[] points)
          Construct a new polygon with 3 or more points.
 
Method Summary
 void addPoint(float x, float y)
          Add a point to the polygon
 boolean closed()
          True if this is a closed shape
 Polygon copy()
          Provide a copy of this polygon
protected  void createPoints()
          Subclasses implement this to create the points of the shape.
 void setAllowDuplicatePoints(boolean allowDups)
          Indicate if duplicate points are allow
 void setClosed(boolean closed)
          Indicate if the polygon should be closed
 void setX(float x)
          Set the x position of the left side this shape.
 void setY(float y)
          Set the y position of the top of this shape.
 Shape transform(Transform transform)
          Apply a transformation and return a new shape.
 
Methods inherited from class org.newdawn.slick.geom.Shape
calculateRadius, calculateTriangles, checkPoints, contains, contains, findCenter, getBoundingCircleRadius, getCenter, getCenterX, getCenterY, getHeight, getLocation, getMaxX, getMaxY, getMinX, getMinY, getNormal, getPoint, getPointCount, getPoints, getTriangles, getWidth, getX, getY, hasVertex, includes, increaseTriangulation, indexOf, intersects, preCache, prune, setCenterX, setCenterY, setLocation, setLocation, subtract, union
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Polygon

public Polygon(float[] points)
Construct a new polygon with 3 or more points. This constructor will take the first set of points and copy them after the last set of points to create a closed shape.

Parameters:
points - An array of points in x, y order.

Polygon

public Polygon()
Create an empty polygon

Method Detail

setAllowDuplicatePoints

public void setAllowDuplicatePoints(boolean allowDups)
Indicate if duplicate points are allow

Parameters:
allowDups - True if duplicate points are allowed

addPoint

public void addPoint(float x,
                     float y)
Add a point to the polygon

Parameters:
x - The x coordinate of the point
y - The y coordinate of the point

transform

public Shape transform(Transform transform)
Apply a transformation and return a new shape. This will not alter the current shape but will return the transformed shape.

Specified by:
transform in class Shape
Parameters:
transform - The transform to be applied
Returns:
The transformed shape.

setX

public void setX(float x)
Description copied from class: Shape
Set the x position of the left side this shape.

Overrides:
setX in class Shape
Parameters:
x - The new x position of the left side this shape.
See Also:
Shape.setX(float)

setY

public void setY(float y)
Description copied from class: Shape
Set the y position of the top of this shape.

Overrides:
setY in class Shape
Parameters:
y - The new y position of the top of this shape.
See Also:
Shape.setY(float)

createPoints

protected void createPoints()
Description copied from class: Shape
Subclasses implement this to create the points of the shape.

Specified by:
createPoints in class Shape
See Also:
Shape.createPoints()

closed

public boolean closed()
Description copied from class: Shape
True if this is a closed shape

Overrides:
closed in class Shape
Returns:
True if this is a closed shape
See Also:
Shape.closed()

setClosed

public void setClosed(boolean closed)
Indicate if the polygon should be closed

Parameters:
closed - True if the polygon should be closed

copy

public Polygon copy()
Provide a copy of this polygon

Returns:
A copy of this polygon


Copyright © 2006 New Dawn Software. All Rights Reserved.