Version: 2018.4
语言: 中文

SurfaceObserver.RequestMeshAsync

切换到手册
public bool RequestMeshAsync (XR.WSA.SurfaceData dataRequest, XR.WSA.SurfaceObserver.SurfaceDataReadyDelegate onDataReady);

参数

dataRequest用于烘培指定表面的请求数据包。
onDataReady烘培完此表面后调用的回调。

返回

bool 如果请求失败，则返回 false，失败的原因通常是指定了无效的表面 ID。

描述

调用 RequestMeshAsync 可启动特定表面网格数据的烘培流程。系统可能需要用多个帧才能生成此数据。系统将通过指定的 SurfaceDataReadyDelegate 提供烘培数据。如果 dataRequest 中指定的参数无效，此方法将抛出 ArgumentNullExcpetion 和 ArgumentException。

如果要绘制 RequestMeshAsync 返回的网格，建议您禁用阴影投射并在 MeshRenderer 上获得阴影，以提高性能。

using UnityEditor;
using UnityEngine;
using UnityEngine.XR.WSA;

public class ExampleScript : MonoBehaviour
{
    // Request a new Surface's data given the SurfaceId and the SurfaceObserver.
    void RequestMeshData(SurfaceId id, SurfaceObserver observer)
    {
        // create a new GameObject to hold the new Surface with all the appropriate components
        GameObject newSurface = new GameObject("Surface-" + id.handle);

        // fill out the SurfaceData struct in order to call RequestMeshAsync
        SurfaceData sd;
        sd.id = id;
        sd.outputMesh = newSurface.AddComponent<MeshFilter>();
        sd.outputAnchor = newSurface.AddComponent<WorldAnchor>();
        sd.outputCollider = newSurface.AddComponent<MeshCollider>();
        sd.trianglesPerCubicMeter = 300.0f;
        sd.bakeCollider = true;

        // make the request
        if (observer.RequestMeshAsync(sd, NewSurfaceBaked))
        {
            // New surface request is in the queue and the specified callback will be invoked at a later frame.
        }
        else
        {
            // New surface request has failed.  No callback for this request will be issued.
        }
    }

    void NewSurfaceBaked(SurfaceData sd, bool outputWritten, float elapsedBakeTimeSeconds)
    {
        if (outputWritten)
        {
            // Request completed successfully
        }
        else
        {
            // Request has failed.
        }
    }
}

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