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//L99-103 | |
if (navigator.xr) { | |
navigator.xr.isSessionSupported('immersive-ar') | |
.then((supported) => { | |
// XRデバイスが有効でimmersive-arがサポートされていれば、XRボタンを有効にする処理 | |
xrButton.enabled = supported; | |
}); |
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//L107-113 | |
function onRequestSession() { | |
return navigator.xr.requestSession('immersive-ar', {requiredFeatures: ['local', 'hit-test']}) | |
.then((session) => { | |
// XRセッションを開始する処理 | |
// requiredFeaturesでhit-testを要求 | |
xrButton.setSession(session); | |
onSessionStarted(session); //onSessionStartedのコール | |
}); | |
} |
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//L135-146,onSessionStarted内 | |
session.requestReferenceSpace('viewer').then((refSpace) => { | |
xrViewerSpace = refSpace; | |
session.requestHitTestSource({ space: xrViewerSpace }).then((hitTestSource) => { | |
xrHitTestSource = hitTestSource; //hit testの要求 | |
}); | |
}); | |
session.requestReferenceSpace('local').then((refSpace) => { | |
xrRefSpace = refSpace; | |
session.requestAnimationFrame(onXRFrame); //Render loop処理のコール | |
}); |
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//L198-211,onXRFrame内 | |
if (xrHitTestSource && pose) { | |
let hitTestResults = frame.getHitTestResults(xrHitTestSource); | |
if (hitTestResults.length > 0) { | |
//hit testを行い、hit testの結果が得られたら、バーチャルオブジェクト(reticle)を可視にセットする処理。表示位置はpose情報から取得 | |
let pose = hitTestResults[0].getPose(xrRefSpace); | |
reticle.visible = true; | |
reticle.matrix = pose.transform.matrix; | |
} | |
} | |
scene.drawXRFrame(frame, pose); //フレームを描画 |
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//L155-157 | |
function onSessionEnded(event) { | |
xrButton.setSession(null); | |
} |
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function addARObjectAt(matrix) { | |
let newFlower = arObject.clone(); | |
newFlower.visible = true; | |
newFlower.matrix = matrix; | |
scene.addNode(newFlower); //sceneに仮想オブジェクトnewFlowerを追加 | |
flowers.push(newFlower); | |
if (flowers.length > MAX_FLOWERS) { | |
let oldFlower = flowers.shift(); | |
scene.removeNode(oldFlower); | |
} | |
} |
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