From 6ef1fa4618e08426b874529619a66adbd3d1fcf0 Mon Sep 17 00:00:00 2001 From: Florian Merz Date: Thu, 11 Feb 2021 12:07:59 +0100 Subject: unslug ja: move --- .../ja/web/api/vrdisplay/requestpresent/index.html | 162 +++++++++++++++++++++ 1 file changed, 162 insertions(+) create mode 100644 files/ja/web/api/vrdisplay/requestpresent/index.html (limited to 'files/ja/web/api/vrdisplay/requestpresent') diff --git a/files/ja/web/api/vrdisplay/requestpresent/index.html b/files/ja/web/api/vrdisplay/requestpresent/index.html new file mode 100644 index 0000000000..3429a3e6a8 --- /dev/null +++ b/files/ja/web/api/vrdisplay/requestpresent/index.html @@ -0,0 +1,162 @@ +--- +title: VRDisplay.requestPresent() +slug: Web/API/VRDevice/requestPresent +tags: + - API + - Experimental +translation_of: Web/API/VRDisplay/requestPresent +--- +
{{APIRef("WebVR API")}}{{SeeCompatTable}}
+ +

{{domxref("VRDisplay")}} インターフェイスの requestPresent() メソッドは，VRDisplay へのシーン表示を開始します．

+ +

シンタックス

+ +
vrDisplayInstance.requestPresent(layers).then(function() {
+  // Do something after the presentation has begun
+});
+
+ +

パラメータ

+ +
+
layers
+
表示したいシーンを表す {{domxref("VRLayer")}} オブジェクトの配列．なお現時点では，指定できるのは最小0要素，最大1要素です．
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+ +

戻り値

+ +

表示が開始されたかを解決するpromise．

+ +
+

注記: {{domxref("VRDisplayCapabilities.canPresent")}} が false，あるいは VRLayer 配列数が {{domxref("VRDisplayCapabilities.maxLayers")}} レイヤより多い場合, promiseはリジェクトされます．

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+ +
+

注記:   requestPresent() を呼出した時にVRDisplay が表示中の場合，VRDisplay は表示する VRLayer 配列を更新します．VRDisplayが表示中で requestPresent() がリジェクトされたら，VRDisplay は表示を終了します．

+
+ +

例

+ +
if(navigator.getVRDisplays) {
+  console.log('WebVR 1.1 supported');
+  // Then get the displays attached to the computer
+  navigator.getVRDisplays().then(function(displays) {
+    // If a display is available, use it to present the scene
+    if(displays.length > 0) {
+      vrDisplay = displays[0];
+      console.log('Display found');
+      // Starting the presentation when the button is clicked: It can only be called in response to a user gesture
+      btn.addEventListener('click', function() {
+        if(btn.textContent === 'Start VR display') {
+          vrDisplay.requestPresent([{ source: canvas }]).then(function() {
+            console.log('Presenting to WebVR display');
+
+            // Set the canvas size to the size of the vrDisplay viewport
+
+            var leftEye = vrDisplay.getEyeParameters('left');
+            var rightEye = vrDisplay.getEyeParameters('right');
+
+            canvas.width = Math.max(leftEye.renderWidth, rightEye.renderWidth) * 2;
+            canvas.height = Math.max(leftEye.renderHeight, rightEye.renderHeight);
+
+            // stop the normal presentation, and start the vr presentation
+            window.cancelAnimationFrame(normalSceneFrame);
+            drawVRScene();
+
+            btn.textContent = 'Exit VR display';
+          });
+        } else {
+          vrDisplay.exitPresent();
+          console.log('Stopped presenting to WebVR display');
+
+          btn.textContent = 'Start VR display';
+
+          // Stop the VR presentation, and start the normal presentation
+          vrDisplay.cancelAnimationFrame(vrSceneFrame);
+          drawScene();
+        }
+      });
+    }
+  });
+}
+ +
+

Note: You can see this complete code at raw-webgl-example.

+
+ +

仕様

+ + + + + + + + + + + + + + +
SpecificationStatusComment
{{SpecName('WebVR', '#dom-vrdisplay-requestpresent', 'requestPresent()')}}{{Spec2('WebVR')}}Initial definition
+ +

ブラウザの互換性

+ +

{{CompatibilityTable}}

+ +
+ + + + + + + + + + + + + + + + + + + +
FeatureChromeFirefox (Gecko)Internet ExplorerOperaSafari (WebKit)
Basic support{{CompatVersionUnknown}}{{CompatVersionUnknown}}{{CompatNo}}{{CompatNo}}{{CompatNo}}
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+ +
+ + + + + + + + + + + + + + + + + + + + + +
FeatureAndroidFirefox Mobile (Gecko)IE PhoneOpera MobileSafari MobileChrome for Android
Basic support{{CompatNo}}{{CompatVersionUnknown}}{{CompatNo}}{{CompatNo}}{{CompatNo}}{{CompatNo}}
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+ +

参照

+ + -- cgit v1.2.3-54-g00ecf