//
// Copyright 2012 Bryan Bonczek
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

#import <Foundation/Foundation.h>

@class KPGridClusteringAlgorithm,
       KPAnnotation;

@protocol KPGridClusteringAlgorithmDelegate <NSObject>

@required
- (MKMapSize)gridClusteringAlgorithm:(KPGridClusteringAlgorithm *)gridClusteringAlgorithm obtainGridCellSizeForMapRect:(MKMapRect)mapRect;

- (id)gridClusteringAlgorithm:(KPGridClusteringAlgorithm *)gridClusteringAlgorithm clusterAnnotationForAnnotations:(NSArray *)annotations inClusterGridRect:(MKMapRect)gridRect;

@optional
- (BOOL)gridClusteringAlgorithm:(KPGridClusteringAlgorithm *)gridClusteringAlgorithm clusterIntersects:(KPAnnotation *)clusterAnnotation anotherCluster:(KPAnnotation *)anotherClusterAnnotation;

@end
