squidpony.squidmath

Class Elias

java.lang.Object

squidpony.squidmath.Elias

All Implemented Interfaces:

java.io.Serializable

public class Elias
extends java.lang.Object
implements java.io.Serializable

Contains methods to draw anti-aliased lines based on floating-point coordinates.
Because of the way this line is calculated, endpoints may be swapped and therefore the list may not be in start-to-end order.
Based on work by Hugo Elias at http://freespace.virgin.net/hugo.elias/graphics/x_wuline.htm which is in turn based on work by Wu.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Elias()

Method Summary

Modifier and Type	Method and Description
java.util.ArrayList<Coord>	getLastPath()
double[][]	lightMap(double startx, double starty, double endx, double endy)
java.util.ArrayList<Coord>	line(Coord start, Coord end)
java.util.ArrayList<Coord>	line(Coord start, Coord end, double brightnessThreshold)
java.util.ArrayList<Coord>	line(double startx, double starty, double endx, double endy) Gets the line between the two points.
java.util.ArrayList<Coord>	line(double startx, double starty, double endx, double endy, double brightnessThreshold) Gets the line between the two points.

Methods inherited from class java.lang.Object

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

Constructor Detail

Elias

public Elias()

Method Detail

lightMap

public double[][] lightMap(double startx,
                           double starty,
                           double endx,
                           double endy)

line

public java.util.ArrayList<Coord> line(double startx,
                                       double starty,
                                       double endx,
                                       double endy)

Gets the line between the two points.

Parameters:

startx -

starty -

endx -

endy -

Returns:

line

public java.util.ArrayList<Coord> line(double startx,
                                       double starty,
                                       double endx,
                                       double endy,
                                       double brightnessThreshold)

Gets the line between the two points.

Parameters:

startx -

starty -

endx -

endy -

brightnessThreshold - between 0.0 (default) and 1.0; only Points with higher brightness will be included

Returns:

line

public java.util.ArrayList<Coord> line(Coord start,
                                       Coord end)

line

public java.util.ArrayList<Coord> line(Coord start,
                                       Coord end,
                                       double brightnessThreshold)

getLastPath

public java.util.ArrayList<Coord> getLastPath()