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[Feature] Add anchor to ClusterItem interface. #34

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[Feature] Add anchor to ClusterItem interface. #34

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8 changes: 8 additions & 0 deletions library/src/main/java/net/sharewire/googlemapsclustering/ClusterItem.java
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
package net.sharewire.googlemapsclustering;

import android.graphics.PointF;
import android.support.annotation.Nullable;

/**
Expand Down Expand Up @@ -37,4 +38,11 @@ public interface ClusterItem extends QuadTreePoint {
*/
@Nullable
String getSnippet();

/**
* The anchor of the item.
*
* @return the anchor of the item
*/
PointF getAnchor();
}
14 changes: 14 additions & 0 deletions library/src/main/java/net/sharewire/googlemapsclustering/ClusterRenderer.java
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@
import android.animation.ObjectAnimator;
import android.animation.TypeEvaluator;
import android.content.Context;
import android.graphics.PointF;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.view.animation.FastOutSlowInInterpolator;
Expand Down Expand Up @@ -114,6 +115,7 @@ void render(@NonNull List<Cluster<T>> clusters) {
Marker markerToAdd;

BitmapDescriptor markerIcon = getMarkerIcon(clusterToAdd);
PointF markerAnchor = getMarkerAnchor(clusterToAdd);
String markerTitle = getMarkerTitle(clusterToAdd);
String markerSnippet = getMarkerSnippet(clusterToAdd);

Expand All @@ -123,6 +125,7 @@ void render(@NonNull List<Cluster<T>> clusters) {
markerToAdd = mGoogleMap.addMarker(new MarkerOptions()
.position(new LatLng(parentCluster.getLatitude(), parentCluster.getLongitude()))
.icon(markerIcon)
.anchor(markerAnchor.x, markerAnchor.y)
.title(markerTitle)
.snippet(markerSnippet)
.zIndex(FOREGROUND_MARKER_Z_INDEX));
Expand All @@ -132,6 +135,7 @@ void render(@NonNull List<Cluster<T>> clusters) {
markerToAdd = mGoogleMap.addMarker(new MarkerOptions()
.position(new LatLng(clusterToAdd.getLatitude(), clusterToAdd.getLongitude()))
.icon(markerIcon)
.anchor(markerAnchor.x, markerAnchor.y)
.title(markerTitle)
.snippet(markerSnippet)
.alpha(0.0F)
Expand All @@ -158,6 +162,16 @@ private BitmapDescriptor getMarkerIcon(@NonNull Cluster<T> cluster) {
return checkNotNull(clusterIcon);
}

@NonNull
private PointF getMarkerAnchor(@NonNull Cluster<T> cluster) {
List<T> clusterItems = cluster.getItems();
if (clusterItems.size() > 1) {
return new PointF(0.5f, 0.5f);
} else {
return clusterItems.get(0).getAnchor();
}
}

@Nullable
private String getMarkerTitle(@NonNull Cluster<T> cluster) {
List<T> clusterItems = cluster.getItems();
Expand Down