Package org.mapsforge.map.layer.overlay

Class Polygon

java.lang.Object

org.mapsforge.map.layer.Layer

org.mapsforge.map.layer.overlay.Polygon

public class Polygon
extends Layer

A Polygon draws a closed connected series of line segments specified by a list of LatLongs. If the first and the last LatLong are not equal, the Polygon will be closed automatically.

A Polygon holds two Paint objects to allow for different outline and filling. These paints define drawing parameters such as color, stroke width, pattern and transparency.

Field Summary

Fields inherited from class org.mapsforge.map.layer.Layer

displayModel

Constructor Summary

Constructors

Constructor	Description
Polygon(org.mapsforge.core.graphics.Paint paintFill, org.mapsforge.core.graphics.Paint paintStroke, org.mapsforge.core.graphics.GraphicFactory graphicFactory)
Polygon(org.mapsforge.core.graphics.Paint paintFill, org.mapsforge.core.graphics.Paint paintStroke, org.mapsforge.core.graphics.GraphicFactory graphicFactory, boolean keepAligned)

Method Summary

Modifier and Type	Method	Description
void	addPoint(org.mapsforge.core.model.LatLong point)
void	addPoints(java.util.List<org.mapsforge.core.model.LatLong> points)
void	clear()
boolean	contains(org.mapsforge.core.model.LatLong tapLatLong)
void	draw(org.mapsforge.core.model.BoundingBox boundingBox, byte zoomLevel, org.mapsforge.core.graphics.Canvas canvas, org.mapsforge.core.model.Point topLeftPoint)	Draws this Layer on the given canvas.
java.util.List<org.mapsforge.core.model.LatLong>	getLatLongs()
org.mapsforge.core.graphics.Paint	getPaintFill()
org.mapsforge.core.graphics.Paint	getPaintStroke()
boolean	isKeepAligned()
void	setPaintFill(org.mapsforge.core.graphics.Paint paintFill)
void	setPaintStroke(org.mapsforge.core.graphics.Paint paintStroke)
void	setPoints(java.util.List<org.mapsforge.core.model.LatLong> points)

Methods inherited from class org.mapsforge.map.layer.Layer

getDisplayModel, getPosition, isVisible, onAdd, onDestroy, onLongPress, onRemove, onScroll, onTap, requestRedraw, setDisplayModel, setVisible, setVisible

Methods inherited from class java.lang.Object

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

Constructor Detail

Polygon

public Polygon(org.mapsforge.core.graphics.Paint paintFill,
               org.mapsforge.core.graphics.Paint paintStroke,
               org.mapsforge.core.graphics.GraphicFactory graphicFactory)

Parameters:

paintFill - the initial Paint used to fill this polygon (may be null).

paintStroke - the initial Paint used to stroke this polygon (may be null).

graphicFactory - the GraphicFactory

Polygon

public Polygon(org.mapsforge.core.graphics.Paint paintFill,
               org.mapsforge.core.graphics.Paint paintStroke,
               org.mapsforge.core.graphics.GraphicFactory graphicFactory,
               boolean keepAligned)

Parameters:

paintFill - the initial Paint used to fill this polygon (may be null).

paintStroke - the initial Paint used to stroke this polygon (may be null).

graphicFactory - the GraphicFactory

keepAligned - if set to true it will keep the bitmap aligned with the map, to avoid a moving effect of a bitmap shader.

Method Detail

addPoint

public void addPoint(org.mapsforge.core.model.LatLong point)

addPoints

public void addPoints(java.util.List<org.mapsforge.core.model.LatLong> points)

clear

public void clear()

contains

public boolean contains(org.mapsforge.core.model.LatLong tapLatLong)

draw

public void draw(org.mapsforge.core.model.BoundingBox boundingBox,
                 byte zoomLevel,
                 org.mapsforge.core.graphics.Canvas canvas,
                 org.mapsforge.core.model.Point topLeftPoint)

Description copied from class: Layer

Draws this Layer on the given canvas.

Specified by:

draw in class Layer

Parameters:

boundingBox - the geographical area which should be drawn.

zoomLevel - the zoom level at which this Layer should draw itself.

canvas - the canvas on which this Layer should draw itself.

topLeftPoint - the top-left pixel position of the canvas relative to the top-left map position.

getLatLongs

public java.util.List<org.mapsforge.core.model.LatLong> getLatLongs()

Returns:

a thread-safe list of LatLongs in this polygon.

getPaintFill

public org.mapsforge.core.graphics.Paint getPaintFill()

Returns:

the Paint used to fill this polygon (may be null).

getPaintStroke

public org.mapsforge.core.graphics.Paint getPaintStroke()

Returns:

the Paint used to stroke this polygon (may be null).

isKeepAligned

public boolean isKeepAligned()

Returns:

true if it keeps the bitmap aligned with the map, to avoid a moving effect of a bitmap shader, false otherwise.

setPaintFill

public void setPaintFill(org.mapsforge.core.graphics.Paint paintFill)

Parameters:

paintFill - the new Paint used to fill this polygon (may be null).

setPaintStroke

public void setPaintStroke(org.mapsforge.core.graphics.Paint paintStroke)

Parameters:

paintStroke - the new Paint used to stroke this polygon (may be null).

setPoints

public void setPoints(java.util.List<org.mapsforge.core.model.LatLong> points)