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* #36: Added tileCover to GeoJSON * README update
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| #if !os(Linux) | ||
| import CoreLocation | ||
| #endif | ||
| import Foundation | ||
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| extension GeoJson { | ||
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| public func tileCover(atZoom zoom: Int) -> [MapTile] { | ||
| var tiles: Set<MapTile> = [] | ||
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| allCoordinates.forEach { coordinate in | ||
| tiles.insert(MapTile(coordinate: coordinate, atZoom: zoom)) | ||
| } | ||
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| return Array(tiles) | ||
| } | ||
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,28 @@ | ||
| @testable import GISTools | ||
| import XCTest | ||
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| final class TileCoverTests: XCTestCase { | ||
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| func testTileCover1() { | ||
| let point = Point(Coordinate3D(latitude: 45.0, longitude: 90.0)) | ||
| let tileCover = point.tileCover(atZoom: 1) | ||
| XCTAssertEqual(tileCover, [MapTile(x: 1, y: 0, z: 1)]) | ||
| } | ||
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| func testTileCover2() { | ||
| let lineString = LineString([ | ||
| Coordinate3D(latitude: 10.0, longitude: -10.0), | ||
| Coordinate3D(latitude: 10.0, longitude: 10.0), | ||
| Coordinate3D(latitude: -10.0, longitude: 10.0), | ||
| Coordinate3D(latitude: -10.0, longitude: -10.0), | ||
| ])! | ||
| let tileCover = lineString.tileCover(atZoom: 2) | ||
| XCTAssertEqual(Set(tileCover), Set([ | ||
| MapTile(x: 1, y: 1, z: 2), | ||
| MapTile(x: 1, y: 2, z: 2), | ||
| MapTile(x: 2, y: 1, z: 2), | ||
| MapTile(x: 2, y: 2, z: 2), | ||
| ])) | ||
| } | ||
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| } |