GeoLocationAnchor and MKTileOverlay

Transcript

1. GeoLocationAnchor
   
   
   and MKTileOverlay
   @TachibanaKaoru
   
   
   2022/6/22 #potatotips 78
   

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2. About Me
   @TachibanaKaoru
   
   
   Freelance iOS Engineer
   

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3. What's new ARKit 6
   4K Video Mode
   
   
   RoomPlan
   
   
   Location Anchor
   

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4. RoomPlan
   ެࣜαϯϓϧίʔυ͋Γ
   

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5. GeoLocation (AR Anchor)
   Introduced 2020 (ARKit 4)
   
   
   ൃද౰ॳ࢖͑ͨ৔ॴ͸ αϯϑϥϯγείɺγΧΰɺϚΠΞϛɺχϡʔ
   ϤʔΫɺϩαϯθϧεͷΈɻ
   
   
   ର৅஍ҬΛ૿΍͢༧ఆͱ͍͍ͳ͕ΒɺʢCovid19ͷӨڹ΋͋Γʣͳ͔
   ͳ͔૿͑·ͤΜͰͨ͠ɻ
   

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6. AR Anchor Available Place
   WWDC 2022Ͱɺେ෯ʹର৅஍ҬΛ֦େ͠ɺ΍ͬͱ೔ຊʹ΋ରԠ஍Ҭ͕
   ͖·ͨ͠ɻ
   
   
   ෱Ԭɺ޿ౡɺେࡕɺژ౎ɺ໊ݹ԰ɺԣ඿ɺ౦ژ
   

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7. AR Anchorͱ͸
   ҐஔʢҢ౓/ܦ౓ʣΛࢦఆͯ͠ΞϯΧʔΛ͓͘͜ͱ͕
   Ͱ͖Δ
   
   
   ࣮ࡍͷݐ෺ͷ3D৘ใͱɺΧϝϥը૾͔Β෼ੳͨ͠3D
   ৘ใͱɺ୺຤ͷGPS৘ใΛ૊Έ߹Θͤͨ࢓૊Έ
   
   
   ඇৗʹਖ਼֬ͳҐஔଌఆ͕Մೳ
   
   
   ARҐஔܥήʔϜɺಓҊ಺ͳͲ͕؆୯ʹ࣮૷Մೳ
   

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8. GeoLocation : check availability
   var targetLocation = CLLocationCoordinate2D()
   
   
   targetLocation.latitude = lat
   
   
   targetLocation.longitude = long
   
   
   ARGeoTrackingConfiguration.checkAvailability(
   
   
   at: targetLocation,
   
   
   completionHandler: { (available, error) in
   
   
   // check available
   
   
   })
   
   
   

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9. GeoLocation : check availability
   available ͕ trueͷ৔߹ʹ͸࢖༻Մೳɻ
   
   
   available ͕ falseͷ৔߹ʹ͸࢖༻ෆՄೳ͕ͩɺΤϥʔίʔυͰཧ༝Λ֬ೝ
   ͢Δ͜ͱ
   
   
   Error Code = 201 "Geo tracking is not available at this location."
   
   
   Error Code = 501 "Request failed." ʢϦΫΤετස౓͕ߴ͍ͱൃੜʣ
   

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10. zoom 10
    ௐࠪ೔ : 2022/6/22
    
    
    ௐࠪϙΠϯτɿ֤άϦουͷதԝ఺
    
    
    Latitude : 34.710809-37.050435
    
    
    Longitude: 137.726092-140.887614
    

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11. zoom 11
    ௐࠪ೔ : 2022/6/22
    
    
    ௐࠪϙΠϯτɿ֤άϦουͷதԝ఺
    
    
    Latitude : 34.710809-37.050435
    
    
    Longitude: 137.726092-140.887614
    

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12. zoom 12
    ௐࠪ೔ : 2022/6/22
    
    
    ௐࠪϙΠϯτɿ֤άϦουͷதԝ఺
    
    
    Latitude : 34.710809-37.050435
    
    
    Longitude: 137.726092-140.887614
    

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13. Available Place in Kanto Area
    ͬ͘͟Γݍԝಓɾࠃಓ468ͷ಺ଆͷࢢ֗஍
    https://ja.wikipedia.org/wiki/ट౎ݍதԝ࿈བྷࣗಈंಓ
    

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14. MKTileOverlay
    ~iOS 7.0
    
    
    MKMapViewʹ৘ใΛΦʔόʔϨΠͰ
    දࣔ͢Δ͜ͱ͕Ͱ͖Δɻ
    

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15. MKTileOverlay
    TileʹରԠͨ͠৘ใ͸Google Map΍ࠃ౔஍ཧӃͳͲ͔Β΋ఏڙ͞Ε͍ͯ
    Δɻ
    
    
    MKTileOverlayʹɺTileରԠͨ͠API pathΛ౉͚ͩ͢ͰλΠϧΛදࣔ͢Δ͜
    ͱ΋Մೳ
    
    
    ྫɿࠃ౔஍ཧӃʢ୶৭஍ਤʣ
    
    
    https://cyberjapandata.gsi.go.jp/xyz/pale/{z}/{x}/{y}.png
    

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16. λΠϧͱ͸ʁ
    ஍ਤΛ zoom level ʹԠͯ͡෼ׂ͠ɺͦΕΛඞཁʹԠͯ͡഑৴ɾར༻͢Δɻ
    
    
    zoom level 0 -> 1 tile
    
    
    zoom level 1 -> 4 tiles
    
    
    zoom level 2 -> 16 tiles
    
    
    ...
    
    
    zoom level 10 -> 1048576 tiles
    
    
    zoom level n -> (2^n)^2
    

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17. Tile Position
    ஍ٿ্ͷಛఆͷ࠲ඪ͕ɺͲͷλΠϧʹҐஔ͢Δͷ͔
    
    
    longitude = 135.0
    
    
    latitude = 35.0
    

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18. Longitude to x
    ܦ౓ͰTileͷx͕ܾ·Δ
    
    
    zoom level 2 -> 16 tiles
    
    
    longitude = 135.0
    
    
    ܦ౓0Λج४ͱ͠ɺٿ໘Λ
    8෼ׂ͢Δ 0
    long = 0
    1 2
    3
    4
    5
    6
    7
    long = 135
    ๺͔ΒΈͨ஍ٿ
    

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19. Latitude to y
    Ң౓ͰTileͷy͕ܾ·Δ
    
    
    zoom level 2 -> 16 tiles
    
    
    latitude = 35.0
    
    
    ๺ۃΛج४ͱ͠ɺٿ໘Λ8
    ෼ׂ͢Δ
    5
    1
    2
    3
    4
    0
    6
    7
    lat = 35
    ԣ͔ΒΈͨ஍ٿ
    

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20. let res = initialResolution / pow(2,zoom)
    
    
    let originShift = 2 * Double.pi * 6378137 / 2.0
    
    
    var my = log( tan((90 + lat) * Double.pi / 360.0 )) / (Double.pi / 180.0)
    
    
    let py = (my + self.originShift) / res
    
    
    let tms_y = Int( ceil( py / Double(self.tileSize) ) - 1 )
    
    
    let google_y = Int(pow(2, zoom) - 1 ) - tms_y
    ignore
    y = Rln(tan(
    π
    4
    +
    ϕ
    2
    ))
    85.1°
    

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21. Reference
    ࠃ౔஍ཧӃɹ஍ཧӃλΠϧʹ͍ͭͯ
    
    
    https://maps.gsi.go.jp/development/siyou.html
    
    
    ஍ਤ౤Ө๏ֶशͷͨΊͷ஍ਤը૾ૉࡐू
    
    
    https://user.numazu-ct.ac.jp/~tsato/tsato/graphics/map_projection/
    
    
    άʔάϧϚοϓͷλΠϧ
    
    
    https://maptiler.jp/google-maps-coordinates-tile-bounds-projection/
    

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