54 lines
1.6 KiB
C#
54 lines
1.6 KiB
C#
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// Copyright 2015 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 UnityEngine.UI;
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[RequireComponent(typeof(Text))]
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public class GvrFPS : MonoBehaviour {
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private const string DISPLAY_TEXT_FORMAT = "{0} msf\n({1} FPS)";
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private const string MSF_FORMAT = "#.#";
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private const float MS_PER_SEC = 1000f;
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private Text textField;
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private float fps = 60;
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public Camera cam;
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void Awake() {
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textField = GetComponent<Text>();
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}
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void Start() {
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if (cam == null) {
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cam = Camera.main;
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}
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if (cam != null) {
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// Tie this to the camera, and do not keep the local orientation.
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transform.SetParent(cam.GetComponent<Transform>(), true);
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}
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}
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void LateUpdate() {
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float deltaTime = Time.unscaledDeltaTime;
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float interp = deltaTime / (0.5f + deltaTime);
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float currentFPS = 1.0f / deltaTime;
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fps = Mathf.Lerp(fps, currentFPS, interp);
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float msf = MS_PER_SEC / fps;
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textField.text = string.Format(DISPLAY_TEXT_FORMAT,
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msf.ToString(MSF_FORMAT), Mathf.RoundToInt(fps));
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}
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}
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