90 lines
3.3 KiB
Objective-C
90 lines
3.3 KiB
Objective-C
#import <Foundation/Foundation.h>
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#import "MLNFoundation.h"
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#import "MLNOfflineRegion.h"
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#import "MLNShape.h"
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NS_ASSUME_NONNULL_BEGIN
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/**
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An offline region defined by a style URL, geographic shape, and
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range of zoom levels.
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### Example
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```swift
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var coordinates = [
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CLLocationCoordinate2D(latitude: 45.522585, longitude: -122.685699),
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CLLocationCoordinate2D(latitude: 45.534611, longitude: -122.708873),
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CLLocationCoordinate2D(latitude: 45.530883, longitude: -122.678833)
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]
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let triangle = MLNPolygon(coordinates: &coordinates, count: UInt(coordinates.count))
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let region = MLNShapeOfflineRegion(styleURL: MLNStyle.lightStyleURL, shape: triangle,
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fromZoomLevel: 11, toZoomLevel: 14) let context = "Triangle Region".data(using: .utf8)
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MLNOfflineStorage.shared.addPack(for: region, withContext: context!)
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```
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This class requires fewer resources than MLNTilePyramidOfflineRegion
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for irregularly shaped regions.
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*/
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MLN_EXPORT
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@interface MLNShapeOfflineRegion : NSObject <MLNOfflineRegion, NSSecureCoding, NSCopying>
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/**
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The shape for the geographic region covered by the downloaded
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tiles.
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*/
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@property (nonatomic, readonly) MLNShape *shape;
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/**
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The minimum zoom level for which to download tiles and other resources.
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For more information about zoom levels, ``MLNMapView/zoomLevel``.
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*/
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@property (nonatomic, readonly) double minimumZoomLevel;
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/**
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The maximum zoom level for which to download tiles and other resources.
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For more information about zoom levels, ``MLNMapView/zoomLevel``.
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*/
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@property (nonatomic, readonly) double maximumZoomLevel;
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- (instancetype)init NS_UNAVAILABLE;
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/**
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Initializes a newly created offline region with the given style URL, geometry,
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and range of zoom levels.
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This is the designated initializer for ``MLNShapeOfflineRegion``.
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@param styleURL URL of the map style for which to download resources. The URL
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may be a full HTTP or HTTPS URL or a canonical URL.
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Specify `nil` for the default style.
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Relative file URLs cannot be used as offline style URLs. To download the
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online resources required by a local style, specify a URL to an online copy
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of the style.
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@param shape The shape of the geographic region to be covered by
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the downloaded tiles.
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@param minimumZoomLevel The minimum zoom level to be covered by the downloaded
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tiles. This parameter should be set to at least 0 but no greater than the
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value of the `maximumZoomLevel` parameter. For each required tile source, if
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this parameter is set to a value less than the tile source’s minimum zoom
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level, the download covers zoom levels down to the tile source’s minimum
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zoom level.
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@param maximumZoomLevel The maximum zoom level to be covered by the downloaded
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tiles. This parameter should be set to at least the value of the
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`minimumZoomLevel` parameter. For each required tile source, if this
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parameter is set to a value greater than the tile source’s minimum zoom
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level, the download covers zoom levels up to the tile source’s maximum zoom
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level.
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*/
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- (instancetype)initWithStyleURL:(nullable NSURL *)styleURL
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shape:(MLNShape *)shape
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fromZoomLevel:(double)minimumZoomLevel
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toZoomLevel:(double)maximumZoomLevel NS_DESIGNATED_INITIALIZER;
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@end
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NS_ASSUME_NONNULL_END
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