99 lines
3.2 KiB
C#
99 lines
3.2 KiB
C#
// Copyright 2017 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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using UnityEngine;
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#if UNITY_2017_2_OR_NEWER
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using UnityEngine.XR;
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#else
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using XRSettings = UnityEngine.VR.VRSettings;
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#endif // UNITY_2017_2_OR_NEWER
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/// Used to recenter only the controllers, required for scenes that have no clear forward direction.
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/// Details: https://developers.google.com/vr/distribute/daydream/design-requirements#UX-D6
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///
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/// Works by offsetting the orientation of the transform when a recenter occurs to correct for the
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/// orientation change caused by the recenter event.
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///
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/// Usage: Place on the parent of the camera that should have it's orientation corrected.
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[HelpURL("https://developers.google.com/vr/unity/reference/class/GvrRecenterOnlyController")]
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public class GvrRecenterOnlyController : MonoBehaviour {
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private Quaternion lastAppliedYawCorrection = Quaternion.identity;
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private Quaternion yawCorrection = Quaternion.identity;
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void Update() {
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bool connected = false;
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foreach (var hand in Gvr.Internal.ControllerUtils.AllHands) {
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GvrControllerInputDevice device = GvrControllerInput.GetDevice(hand);
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if (device.State == GvrConnectionState.Connected) {
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connected = true;
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break;
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}
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}
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if (!connected) {
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return;
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}
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// Daydream is loaded only on deivce, not in editor.
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#if UNITY_ANDROID && !UNITY_EDITOR
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if (XRSettings.loadedDeviceName != GvrSettings.VR_SDK_DAYDREAM) {
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return;
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}
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#endif
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if (GvrControllerInput.Recentered) {
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ApplyYawCorrection();
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return;
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}
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#if UNITY_EDITOR
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// Compatibility for Instant Preview.
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if (Gvr.Internal.InstantPreview.Instance != null &&
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Gvr.Internal.InstantPreview.Instance.enabled &&
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Gvr.Internal.ControllerUtils.AnyButton(GvrControllerButton.System)) {
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return;
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}
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#else // !UNITY_EDITOR
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if (Gvr.Internal.ControllerUtils.AnyButton(GvrControllerButton.System)) {
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return;
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}
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#endif // UNITY_EDITOR
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yawCorrection = GetYawCorrection();
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}
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void OnDisable() {
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yawCorrection = Quaternion.identity;
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RemoveLastYawCorrection();
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}
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private void ApplyYawCorrection() {
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RemoveLastYawCorrection();
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transform.localRotation = transform.localRotation * yawCorrection;
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lastAppliedYawCorrection = yawCorrection;
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}
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private void RemoveLastYawCorrection() {
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transform.localRotation =
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transform.localRotation * Quaternion.Inverse(lastAppliedYawCorrection);
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lastAppliedYawCorrection = Quaternion.identity;
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}
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private Quaternion GetYawCorrection() {
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Quaternion headRotation = GvrVRHelpers.GetHeadRotation();
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Vector3 euler = headRotation.eulerAngles;
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return lastAppliedYawCorrection * Quaternion.Euler(0.0f, euler.y, 0.0f);
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}
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}
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