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DracoDemo.cs
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DracoDemo.cs
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// Copyright 2017 The Draco Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#if UNITY_STANDALONE || UNITY_WEBGL || UNITY_IOS || UNITY_TVOS || UNITY_VISIONOS || UNITY_ANDROID || UNITY_WSA || PLATFORM_LUMIN
#define DRACO_PLATFORM_SUPPORTED
#endif
using System.IO;
using System.Threading.Tasks;
using UnityEngine;
#if DRACO_PLATFORM_SUPPORTED
using Draco;
#endif
using Unity.Collections;
using UnityEngine.Networking;
[RequireComponent(typeof(MeshFilter))]
[RequireComponent(typeof(MeshRenderer))]
public class DracoDemo : MonoBehaviour
{
public string filePath;
#if DRACO_PLATFORM_SUPPORTED
async void Start() {
var data = await LoadData(filePath);
if (data == null) return;
// Async decoding has to start on the main thread and spawns multiple C# jobs.
var mesh = await DracoDecoder.DecodeMesh(data);
if (mesh != null)
{
// Use the resulting mesh
GetComponent<MeshFilter>().mesh= mesh;
}
}
#pragma warning disable CS1998
public static async Task<byte[]> LoadData(string filePath) {
#pragma warning restore CS1998
// Load file into memory
var fullPath = Path.Combine(Application.streamingAssetsPath, filePath);
byte[] data = null;
#if (UNITY_WEBGL || UNITY_ANDROID) && !UNITY_EDITOR
using var request = UnityWebRequest.Get(fullPath);
request.SendWebRequest();
while (!request.isDone) {
await Task.Yield();
}
if (request.result == UnityWebRequest.Result.Success) {
data = request.downloadHandler.data;
}
else {
Debug.LogError($"Download failed {request.result}: {request.error} (URI: {fullPath})");
}
#else
#if NET_STANDARD_2_1
data = await File.ReadAllBytesAsync(fullPath);
#else
data = File.ReadAllBytes(fullPath);
#endif
#endif
return data;
}
#else // DRACO_PLATFORM_SUPPORTED
void Start()
{
Debug.LogError("Draco is not supported on this platform.");
}
#endif // DRACO_PLATFORM_SUPPORTED
}