org.oscim.layers.marker

Class ClusterMarkerRenderer

java.lang.Object

org.oscim.renderer.LayerRenderer

org.oscim.renderer.BucketRenderer

org.oscim.layers.marker.MarkerRenderer

org.oscim.layers.marker.ClusterMarkerRenderer

public class ClusterMarkerRenderer
extends MarkerRenderer

An extension to the MarkerRenderer with item clustering support.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ClusterMarkerRenderer.ClusterStyle Class to wrap the cluster icon style properties

Field Summary

Fields

Modifier and Type	Field and Description
protected static int	CLUSTER_MAXSIZE Max number to display inside a cluster icon
protected static int	MAP_MARKER_CLUSTER_SIZE_DP Map Cluster Icon Size.
protected static Bitmap[]	mClusterBitmaps cached bitmaps database, we will cache cluster bitmaps from 1 to MAX_SIZE and always use same bitmap for efficiency
protected int	mStyleBackground
protected int	mStyleForeground

Fields inherited from class org.oscim.layers.marker.MarkerRenderer

mBox, mDefaultMarker, mItems, mMapPoint, mMarkerLayer, mSymbolLayer, mUpdate

Fields inherited from class org.oscim.renderer.BucketRenderer

buckets, log, mFlipOnDateLine, mInitialized, mMapPosition

Constructor Summary

Constructors

Constructor and Description
ClusterMarkerRenderer(MarkerLayer<MarkerInterface> markerLayer, MarkerSymbol defaultSymbol, ClusterMarkerRenderer.ClusterStyle style) Constructs a clustered marker renderer

Method Summary

Modifier and Type	Method and Description
static MarkerRendererFactory	factory(MarkerSymbol defaultSymbol, ClusterMarkerRenderer.ClusterStyle style) Convenience method for instantiating this renderer via a factory, so the layer construction semantic is more pleasing to the eye
protected Bitmap	getClusterBitmap(int size) Gets a bitmap for a given cluster size
protected void	populate(int size)
void	update(GLViewport v) Default implementation: Copy initial Viewport position and compile buckets.

Methods inherited from class org.oscim.layers.marker.MarkerRenderer

sort, update

Methods inherited from class org.oscim.renderer.BucketRenderer

compile, render, setMatrix, setMatrix, setMatrix, setMatrix

Methods inherited from class org.oscim.renderer.LayerRenderer

isReady, setReady, setup

Methods inherited from class java.lang.Object

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

Field Detail

CLUSTER_MAXSIZE

protected static final int CLUSTER_MAXSIZE

Max number to display inside a cluster icon

See Also:

Constant Field Values

MAP_MARKER_CLUSTER_SIZE_DP

protected static final int MAP_MARKER_CLUSTER_SIZE_DP

Map Cluster Icon Size. This is the biggest size for clusters of CLUSTER_MAXSIZE elements. Smaller clusters will be slightly smaller

See Also:

Constant Field Values

mClusterBitmaps

protected static Bitmap[] mClusterBitmaps

cached bitmaps database, we will cache cluster bitmaps from 1 to MAX_SIZE and always use same bitmap for efficiency

mStyleBackground

protected int mStyleBackground

mStyleForeground

protected int mStyleForeground

Constructor Detail

ClusterMarkerRenderer

public ClusterMarkerRenderer(MarkerLayer<MarkerInterface> markerLayer,
                             MarkerSymbol defaultSymbol,
                             ClusterMarkerRenderer.ClusterStyle style)

Constructs a clustered marker renderer

Parameters:

markerLayer - The owner layer

defaultSymbol - The default symbol

style - The desired style, or NULL to disable clustering

Method Detail

populate

protected void populate(int size)

Overrides:

populate in class MarkerRenderer

update

public void update(GLViewport v)

Description copied from class: BucketRenderer

Default implementation: Copy initial Viewport position and compile buckets.

Overrides:

update in class MarkerRenderer

getClusterBitmap

protected Bitmap getClusterBitmap(int size)

Gets a bitmap for a given cluster size

Parameters:

size - The cluster size. Can be greater than CLUSTER_MAXSIZE.

Returns:

A somewhat cool bitmap to be used as the cluster marker

factory

public static MarkerRendererFactory factory(MarkerSymbol defaultSymbol,
                                            ClusterMarkerRenderer.ClusterStyle style)

Convenience method for instantiating this renderer via a factory, so the layer construction semantic is more pleasing to the eye

Parameters:

defaultSymbol - Default symbol to use if the Marker is not assigned a symbol

style - Cluster icon style, or NULL to disable clustering functionality

Returns:

A factory to be passed to the ItemizedLayer constructor in order to enable the cluster functionality