ARオブジェクトの座標を操る方法チートシート
カメラの50cm前に置く
guard let camera = sceneView.pointOfView else {
return
}
let cameraPos = SCNVector3Make(0, 0, -0.5)
let position = camera.convertPosition(cameraPos, to: nil)
boxNode.position = position
スクリーンのタップした位置の50cm前に置く
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
guard let point = touches.first?.location(in: sceneView) else {
return
}
let infrontOfCamera = SCNVector3(x: 0, y: 0, z: -0.5)
guard let cameraNode = sceneView.pointOfView else { return }
let pointInWorld = cameraNode.convertPosition(infrontOfCamera, to: nil)
var screenPos = sceneView.projectPoint(pointInWorld)
screenPos.x = Float(point.x)
screenPos.y = Float(point.y)
let finalPosition = sceneView.unprojectPoint(screenPos)
boxNode.position = finalPosition
}
タップして平面、垂直面に置く
水平面 | 垂直面 |
---|---|
configuration
let configuration = ARWorldTrackingConfiguration()
configuration.planeDetection = [.horizontal, .vertical]
touchesBegan
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
guard let location = touches.first?.location(in: sceneView),
let horizontalHit = sceneView.hitTest(
location,
types: .existingPlane
).first else {
return
}
let column3: simd_float4 = horizontalHit.worldTransform.columns.3
let position = SCNVector3(column3.x, column3.y, column3.z)
boxNode.position = position
sceneView.scene.rootNode.addChildNode(boxNode)
}
任意の方向を向かせる
例:カメラの方向を向かせる
guard let camera = sceneView.pointOfView else {
return
}
boxNode.look(at: camera.position)
カメラと同じ方向を向かせる
guard let camera = sceneView.pointOfView else {
return
}
boxNode.eulerAngles = camera.eulerAngles
カメラと同じ高さに置く
guard let camera = sceneView.pointOfView else {
return
}
let cameraPos = SCNVector3Make(0, 0, -0.5)
var position = camera.convertPosition(cameraPos, to: nil)
position.y = camera.position.y // ここ
boxNode.position = position
カメラから発射する
private func shoot(){
guard let camera = sceneView.pointOfView else {
return
}
boxNode.position = camera.position
let targetPosCamera = SCNVector3Make(0, 0, -2)
let target = camera.convertPosition(targetPosCamera, to: nil)
let action = SCNAction.move(to: target, duration: 1)
boxNode.runAction(action)
}
カメラの前に物体をホールド
extension PracticeViewController: ARSCNViewDelegate {
func renderer(_ renderer: SCNSceneRenderer, updateAtTime time: TimeInterval) {
// このフラグをボタン等で切り替える
if holding {
guard let camera = sceneView.pointOfView else {
return
}
let cameraPos = SCNVector3Make(0, 0, -0.5)
let position = camera.convertPosition(cameraPos, to: nil)
boxNode.position = position
}
}
}
サンプルコード
サンプルコードはARKit-EmperorのPracticeにあります!
Author And Source
この問題について(ARオブジェクトの座標を操る方法チートシート), 我々は、より多くの情報をここで見つけました https://qiita.com/kboy/items/7237219766856149c8d8著者帰属:元の著者の情報は、元のURLに含まれています。著作権は原作者に属する。
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