org.newdawn.slick.geom
Class BasicTriangulator

java.lang.Object
  org.newdawn.slick.geom.BasicTriangulator

All Implemented Interfaces:

java.io.Serializable, Triangulator

public class BasicTriangulator
extends java.lang.Object
implements Triangulator

Triangulates a polygon into triangles - duh. Doesn't handle holes in polys

Author:

Based on Public Source from FlipCode

See Also:

Serialized Form

Constructor Summary

BasicTriangulator()
Create a new triangulator

Method Summary

void	addPolyPoint(float x, float y) Add a point describing the polygon to be triangulated
float[]	getPolyPoint(int index) Get the coordinates of the point at the specified index
int	getPolyPointCount() Get the number of points in the polygon
int	getTriangleCount() Get a count of the number of triangles produced
float[]	getTrianglePoint(int tri, int i) Get a point on a specified generated triangle
void	startHole() Start a hole in the polygon
boolean	triangulate() Cause the triangulator to split the polygon

Methods inherited from class java.lang.Object

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

Constructor Detail

BasicTriangulator

public BasicTriangulator()

Create a new triangulator

Method Detail

addPolyPoint

public void addPolyPoint(float x,
                         float y)

Add a point describing the polygon to be triangulated

Specified by:

addPolyPoint in interface Triangulator

Parameters:

x - The x coordinate of the point

y - the y coordinate of the point

getPolyPointCount

public int getPolyPointCount()

Get the number of points in the polygon

Returns:

The number of points in the polygon

getPolyPoint

public float[] getPolyPoint(int index)

Get the coordinates of the point at the specified index

Parameters:

index - The index of the point to retrieve

Returns:

The oordinates of the point at the specified index

triangulate

public boolean triangulate()

Cause the triangulator to split the polygon

Specified by:

triangulate in interface Triangulator

Returns:

True if we managed the task

getTriangleCount

public int getTriangleCount()

Get a count of the number of triangles produced

Specified by:

getTriangleCount in interface Triangulator

Returns:

The number of triangles produced

getTrianglePoint

public float[] getTrianglePoint(int tri,
                                int i)

Get a point on a specified generated triangle

Specified by:

getTrianglePoint in interface Triangulator

Parameters:

tri - The index of the triangle to interegate

i - The index of the point within the triangle to retrieve (0 - 2)

Returns:

The x,y coordinate pair for the point

startHole

public void startHole()

Description copied from interface: Triangulator

Start a hole in the polygon

Specified by:

startHole in interface Triangulator

See Also:

Triangulator.startHole()