feat(all): add containsCoordinate() static method to Projection class

Author: fgutteridge

src/map-view-common.ts

@@ -423,6 +423,7 @@ export class UISettingsBase implements UISettings {
 
 export abstract class ProjectionBase implements Projection {
     public visibleRegion: VisibleRegion;
+    public abstract containsCoordinate(position: Position): Boolean;
     public abstract fromScreenLocation(point: Point): Position;
     public abstract toScreenLocation(position: Position): Point;
     public ios: any; /* GMSProjection */

src/map-view.android.ts

@@ -608,6 +608,10 @@ export class Projection extends ProjectionBase {
         return new VisibleRegion(this.android.getVisibleRegion());
     }
 
+    containsCoordinate(position: Position): Boolean {
+        return this.android.getVisibleRegion().latLngBounds.contains(position.android);
+    }
+
     fromScreenLocation(point: Point) {
         var latLng = this.android.fromScreenLocation(new android.graphics.Point(point.x, point.y));
         return new Position(latLng);

src/map-view.d.ts

@@ -128,6 +128,7 @@ export class UISettings {
 
 export class Projection {
     public visibleRegion: VisibleRegion;
+    public containsCoordinate(position: Position): Boolean;
     public fromScreenLocation(point: Point): Position;
     public toScreenLocation(position: Position): Point;
     public ios: any; /* GMSProjection */

src/map-view.ios.ts

@@ -560,6 +560,10 @@ export class Projection extends ProjectionBase {
         return new VisibleRegion(this.ios.visibleRegion());
     }
 
+    containsCoordinate(position: Position): Boolean {
+        return this.ios.containsCoordinate(position.ios);
+    }
+
     fromScreenLocation(point: Point) {
         var location = this.ios.coordinateForPoint(CGPointMake(point.x, point.y));
         return new Position(location);