org.ka2ddo.yaac.gui.drawlayer
Class Polyline

java.lang.Object
  org.ka2ddo.yaac.gui.drawlayer.AbstractDrawable
      org.ka2ddo.yaac.gui.drawlayer.Polyline

public class Polyline
extends AbstractDrawable

This class defines a drawable polyline.

Constructor Summary

Polyline()
Create an empty Polyline.

Method Summary

void	addVertex(double lat, double lon) Add another vertex to this polyline.
void	addVertex(java.awt.geom.Point2D pt) Add another vertex to this polyline
float	distance(int x, int y, Projection proj) This computes the nearest distance from this drawable to the specified pixel coordinates.
double	getVertexLat(int index) Gets the latitude of the index-specified vertex in the polyline.
double	getVertexLon(int index) Gets the longitude of the index-specified vertex in the polyline.
void	paintDrawable(java.awt.Graphics2D g, Projection proj) Render this drawable upon a canvas using the specified Graphics and Projection.
void	removeVertex(int index) Remove the specified vertex from the ordered list of vertices.
int	size() Get the number of vertices in this polyline.
java.lang.String	toString() Returns a string representation of the object.

Methods inherited from class org.ka2ddo.yaac.gui.drawlayer.AbstractDrawable

getLineColor, getName, getStroke, getStrokeType, paramString, setLineColor, setName, setStroke

Methods inherited from class java.lang.Object

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

Constructor Detail

Polyline

public Polyline()

Create an empty Polyline.

Method Detail

addVertex

public void addVertex(double lat,
                      double lon)

Add another vertex to this polyline.

Parameters:

lat - latitude of this vertex in degrees North

lon - longitude of this vertex in degrees East

addVertex

public void addVertex(java.awt.geom.Point2D pt)

Add another vertex to this polyline

Parameters:

pt - Point2D containing a position in decimal degrees North and East

size

public int size()

Get the number of vertices in this polyline.

Returns:

vertex count

removeVertex

public void removeVertex(int index)
                  throws java.lang.ArrayIndexOutOfBoundsException

Remove the specified vertex from the ordered list of vertices.

Parameters:

index - zero-based index of the vertex to remove

Throws:

java.lang.ArrayIndexOutOfBoundsException - if the index is not in range to represent a vertex in ths polyline

getVertexLat

public double getVertexLat(int index)

Gets the latitude of the index-specified vertex in the polyline.

Parameters:

index - zero-based index of the vertex

Returns:

degrees North

getVertexLon

public double getVertexLon(int index)

Gets the longitude of the index-specified vertex in the polyline.

Parameters:

index - zero-based index of the vertex

Returns:

degrees East

paintDrawable

public void paintDrawable(java.awt.Graphics2D g,
                          Projection proj)

Render this drawable upon a canvas using the specified Graphics and Projection.

Specified by:

paintDrawable in class AbstractDrawable

Parameters:

g - Graphics2D object for rendering the drawable

proj - Projection for translating geographic coordinates of the drawable

distance

public float distance(int x,
                      int y,
                      Projection proj)

This computes the nearest distance from this drawable to the specified pixel coordinates.

Specified by:

distance in class AbstractDrawable

Parameters:

x - int pixel X-coordinate

y - int pixel Y-coordinate

proj - Projection to translate drawable into screen space

Returns:

distance in pixels

toString

public java.lang.String toString()

Returns a string representation of the object.

Overrides:

toString in class java.lang.Object

Returns:

a string representation of the object.