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#import "MGLShapeCollection.h"
@implementation MGLShapeCollection
+ (instancetype)shapeCollectionWithShapes:(NS_ARRAY_OF(MGLShape *) *)shapes {
return [[self alloc] initWithShapes:shapes];
}
- (instancetype)initWithShapes:(NS_ARRAY_OF(MGLShape *) *)shapes {
if (self = [super init]) {
NSAssert(shapes.count, @"Cannot create an empty shape collection");
_shapes = shapes.copy;
}
return self;
}
- (CLLocationCoordinate2D)coordinate {
return _shapes.firstObject.coordinate;
}
- (NSDictionary *)geoJSONDictionary {
return @{@"type": @"GeometryCollection",
@"geometries": [self geometryCollection]};
}
- (NSArray *)geometryCollection {
NSMutableArray *geometries = [[NSMutableArray alloc] initWithCapacity:self.shapes.count];
for (id shape in self.shapes) {
NSDictionary *geometry = [shape geoJSONDictionary];
[geometries addObject:geometry];
}
return [geometries copy];
}
@end
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