//
//  UIRegion.h
//  UIKit
//
//  Copyright © 2015 Apple Inc. All rights reserved.
//

#import <Foundation/Foundation.h>
#import <UIKit/UIGeometry.h>

NS_ASSUME_NONNULL_BEGIN

NS_CLASS_AVAILABLE_IOS(9_0) @interface UIRegion : NSObject <NSCopying, NSCoding>

/*! A shared infinite region
 */
+ (instancetype)infiniteRegion;

/*! Create a circular region with radius
 */
- (instancetype)initWithRadius:(CGFloat)radius;

/*! Create a rectangular region of size.
 */
- (instancetype)initWithSize:(CGSize)size;

/*! Create a new region that is the inverse of the current region.
 The inverse of the infiniteRegion is an empty region.
 Subclasses of UIRegion need to provide an implementation of inverseRegion.
 */
- (instancetype)inverseRegion;

/*! Create a new region that is the original region plus the supplied region
 */
- (instancetype)regionByUnionWithRegion:(UIRegion *)region;

/*! Create a new region that is the original region minus the supplied region
 */
- (instancetype)regionByDifferenceFromRegion:(UIRegion *)region;

/*! Create a new region that is the region covered by the original region and the supplied region
 */
- (instancetype)regionByIntersectionWithRegion:(UIRegion *)region;

/*! Test for containment
 */
- (BOOL)containsPoint:(CGPoint)point;

@end


NS_ASSUME_NONNULL_END