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Copyright (C) 2018 Yahoo Japan Corporation. All Rights Reserved.
Bonfire iOS #4
20185݄15
Kenta Tokumoto
ARKit+CoreLocation
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Outline
• ࣗݾհ
• ARϞʔυʹ͍ͭͯ
• ARKitͷ֓ཁ
• ARKit+CoreLocation
• ΦϒδΣΫτͷஔํ๏ʹ͍ͭͯ
• ϧʔτϥΠϯ
• ൘
•
• ͚Μ͘͞+ΰʔϧϐϯ
• ۭؒิਖ਼
• ARͱਤͰͷUIͷҧ͍ʹ͍ͭͯ
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About me
,FOUB5PLVNPUP
5XJUUFSUPUPNP
(JUIVCUPUPNP
2JJUBUPUPNP
໊ݹۈɺೖࣾ̒
:BIPP."1ͷJ04
8FC"1*։ൃ୲
3
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AR mode?
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• Yahoo! MAPΞϓϦ(iOS)Ͱఏڙ͍ͯ͠ΔARΛͬͨ
ెาφϏࢧԉػೳ
• iOS 11͔Βར༻ՄೳͳARKitΛ༻
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Team
Product
Manager
Designer
Engineer
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Schedule
20179݄ʙ 12݄ 1݄ 2݄ 3݄
ϧʔτϥΠϯɺ
࣮ݧ
൘ɺ͚Μ͘͞
QAɺਃ
ۭؒิਖ਼
ϦϦʔε
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ARKit
• iOS 11Ҏ߱Ͱ͑ΔARػೳΛ࣮͢Δͷʹศ
རͳFramework
• AR modePosition TrackingΛඞཁͱ͢ΔͨΊ
A9νοϓ͕ࡌ͞ΕͨͷΈαϙʔτ
• Android → ARCore
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ARKit+CoreLocation
• ARConfiguration.worldAlignment.gravit
yAndHeadingΛࢦఆ͢Δ
• ݪͷҐஔใͱARKitʹΑΓߏங͞Ε
ͨੈքۭؒͷݪ૬ޓมՄೳ
AR ࣮ۭؒ
N N
(x
n
, z
n
) (lat
n
, lon
n
)
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ARKit+CoreLocation
(0, 0)
d [m]
(x
1
, z
1
)
(lat
0
, lon
0
)
d [m]
(lat
1
, lon
1
)
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SCNNodeͷஔ
• ϧʔτϥΠϯ (SCNPlane)
• ൘ (3D)
• ͚Μ͘͞+ΰʔϧϐϯ(3D)
• (SCNPlane)
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ϧʔτϥΠϯ
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ϧʔτϥΠϯ
position
eulerAngles.y
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൘
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൘
position
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൘
position
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൘
position
• ϚʔδϯΛઃ͚ͯݟ͍͢ํʹճస
• ౦ͲͪΒʹஔ͢Δ͔ɺਐߦํ
ͱ࣍ͷํͱͷ͔ࠩΒஅ͍ͯ͠Δ
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position
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position
• ARSCNView͔ΒऔΕΔ
pointOfViewͷpositionΛऔಘ
• ݱࡏҐஔͷ࠲ඪΛͱʹҠಈڑ
ͱ֯Λܭࢉ
• ϥϯμϜͰग़͢Α͏ʹ
materialʹઃఆ͍ͯ͠ΔUIImageΛ
ಈతʹઃఆ͍ͯ͠Δ
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͚Μ͘͞+ΰʔϧϐϯ
position
SCNBillboardConstrain
t
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SCNNodeͷՃ
locationInfoProvider.location { [weak self] location in
guard let origin = location else {
self?.displayError()
return
}
self?.addObjects(origin: origin)
}
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ஞ࣍తͳSCNNodeͷՃ
func renderer(_ renderer: SCNSceneRenderer, updateAtTime time: TimeInterval) {
// 5ͭͣͭՃ͢Δ
}
self.navigationView.worldNode.addScheduledNodes(quantity: 5)
func addObjects(origin: CLLocation) {
self.navigationView.origin = origin
let routeLineNodes = routeNodes(withCoordinates: self.coordinates)
self.navigationView.scheduleNodes(routeLineNodes, priority: .high)
}
// ARSCNViewDelegate
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ۭؒิਖ਼
Correctable
Space
Fixed Space
Root Space
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ۭؒิਖ਼
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• Fixed Space
•
• Correctable Space
• ϧʔτϥΠϯ
• ͚Μ͘͞&ΰʔϧϐϯ
• ൘
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ۭؒิਖ਼
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GPSʹΑΔݱࡏ (CoreLocation)
AR্ۭؒͷΧϝϥͷݱࡏ (ARKit)
GPSʹΑΔޡࠩͷܘ
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ۭؒิਖ਼
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GPSʹΑΔݱࡏ (CoreLocation)
AR্ۭؒͷΧϝϥͷݱࡏ (ARKit)
GPSʹΑΔޡࠩͷܘ
ޡࠩͷԁ͔ΒΈग़ͯ͠
͍Δ
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LocationInfoProvider
public protocol LocationInfoProvidable {
func location(completion: @escaping (CLLocation?)->())
func nearbyRoutePoint(from origin: SCNVector3) -> SCNVector3?
var delegate: LocationInfoProviderDelegate? { get set }
}
protocol LocationInfoProviderDelegate: class {
// ֯ิਖ਼ (ిࢠίϯύε·ͨҐஔใͷਫ਼্͕ͨ͠λΠϛϯάͰ௨)
// ਫ਼: heading.headingAccuracy
func locationInfoProvider(_ provider: LocationInfoProvidable, requestUpdateHeading
heading: CLHeading)
// Ґஔิਖ਼ (Ґஔใͷਫ਼্͕ͨ͠λΠϛϯάͰ௨
// ਫ਼: location.horizontalAccuracy
func locationInfoProvider(_ provider: LocationInfoProvidable, requestUpdateLocation
location: CLLocation, oldLocation: CLLocation?)
}
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ۭؒิਖ਼
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extension ARRouteNavigationViewController: ARLocationInfoProviderDelegate {
public func arLocationInfoProvider(_ provider: ARLocationInfoProvidable,
requestUpdateLocation location: CLLocation, oldLocation: CLLocation?) {
guard let origin = navigationView.origin,
let currentPosition = navigationView.pointOfView?.worldPosition else {
return
}
ɹɹɹɹɹ// GPS͔Βܭࢉͨ͠ARۭؒʹ͓͚Δ࠲ඪ
ɹɹɹɹɹlet gpsPosition = location.coordinate.relativeVector3(to: origin.coordinate) +
ɹɹɹɹɹ navigationView.worldNode.correctableNode.worldPosition
ɹɹɹɹɹ// GPSͷޡࠩΛ͑ͯͣΕ͍ͯͳ͍߹Կ͠ͳ͍
ɹɹɹɹɹguard idealPosition.length(between: currentPosition) > location.horizontalAccuracy else {
ɹɹ return
ɹɹɹɹɹ}
ɹɹɹɹɹ// ޡࠩΛܭࢉ
ɹɹɹɹɹlet positionDifference = gpsPosition – currentPosition
ɹɹɹɹɹ// ิਖ਼
ɹɹɹɹɹnavigationView.worldNode.correctableNode.worldPosition -= SCNVector3(positionDifference.x, 0, positionDifference.z)
}
}
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ARͱਤͰͷφϏήʔγϣϯͷҧ͍
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• ՄࢹྖҬ
• ۭؒͱ࣍ݩ
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ՄࢹྖҬͷҧ͍
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• ՄࢹྖҬ
• ਤɹ →ɹશମΛ၆ᛌͯ͠ݟΕΔ
• ARɹ →ɹपลʹϑΥʔΧεͯ͠ݟΔ
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ՄࢹྖҬͷҧ͍ͷରࡦ
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ํࢦࣔΛࡉ͔͘දࣔ ൘ͰํͱΓͷڑΛࡉ͔͘දࣔ
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ۭؒͱ࣍ݩͷҧ͍
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• ۭؒͱ࣍ݩ
• ਤɹ →ɹਤʹΑΔ2࣍ݩۭؒ
ɹɹɹɹɹ (ݱ࣮Λ2Dʹͯ͠Ճͨ͠ͷ)
• ARɹ →ɹݱ࣮ۭؒ (3D)
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࣍ݩͷҧ͍ͷରࡦ
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• يɹɹɹ →ɹ
• ਧ͖ग़͠ɹ →ɹ൘
• ΰʔϧϐϯ →ɹ͚Μ͘͞(ͱΰʔϧϐϯ)
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ਤͱARΛγʔϜϨεʹซ༻͢Δ
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1λοϓͰ͙͢Γସ͑ΒΕΔΑ͏ʹ
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·ͱΊ
• ARKit + CoreLocation Ͱ࣮ࡍͷ෩ܠΛݟͳ͕ΒಓҊ͕Ͱ͖Δ
• ARKit͕ߏ͢Δۭؒ࠲ඪͱ࣮ۭؒͷҢܦ૬ޓʹม͢Δ͜
ͱ͕Ͱ͖Δ
• 3DΦϒδΣΫτͷஔʹSceneKitͷ͕ࣝඞཁ
• GPSిࢠίϯύεͷਫ਼ΛݟͭͭΧϝϥͷ࠲ඪ͔ΒҐஔํ
Λิਖ਼Մೳ
• ARͱਤͰಛੑ͕ҧ͏ͨΊUIͦΕͧΕʹ߹ΘͤΔඞཁ͕͋Δ
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Fin