74 lines
2.2 KiB
C#
74 lines
2.2 KiB
C#
// Copyright 2016 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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using System.Collections;
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/// GvrPointerManager is a standard interface for
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/// controlling which GvrBasePointer is being used
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/// for user input affordance.
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///
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public class GvrPointerManager : MonoBehaviour {
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private static GvrPointerManager instance;
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/// Change the GvrBasePointer that is currently being used.
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public static GvrBasePointer Pointer
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{
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get {
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return instance == null ? null : instance.pointer;
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}
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set {
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if (instance == null || instance.pointer == value) {
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return;
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}
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instance.pointer = value;
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}
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}
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/// GvrBasePointer calls this when it is created.
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/// If a pointer hasn't already been assigned, it
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/// will assign the newly created one by default.
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///
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/// This simplifies the common case of having only one
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/// GvrBasePointer so is can be automatically hooked up
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/// to the manager. If multiple GvrGazePointers are in
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/// the scene, the app has to take responsibility for
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/// setting which one is active.
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public static void OnPointerCreated(GvrBasePointer createdPointer) {
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if (instance != null && GvrPointerManager.Pointer == null) {
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GvrPointerManager.Pointer = createdPointer;
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}
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}
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private GvrBasePointer pointer;
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void Awake() {
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if (instance != null) {
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Debug.LogError("More than one GvrPointerManager instance was found in your scene. "
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+ "Ensure that there is only one GvrPointerManager.");
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this.enabled = false;
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return;
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}
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instance = this;
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}
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void OnDestroy() {
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if (instance == this) {
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instance = null;
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}
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}
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}
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