RaycastCommand

描述

用于设置要在作业过程中异步执行的射线投射命令的结构。

使用此结构计划一批射线投射时，它们会以异步方式并行执行。射线投射的结果会写入结果缓冲区。由于结果是异步写入，因此在作业完成之前无法访问结果缓冲区。

The results for a command at index N in the command buffer are stored at index N * maxHits in the results buffer.

如果 maxHits 大于命令的实际结果数，则结果缓冲区会包含一些未命中任何对象的无效结果。第一个无效结果通过为 null 的碰撞体进行标识。第二个以及随后的无效结果不会由射线投射命令写入，因此其碰撞体不保证为 null。遍历结果时，循环应在发现第一个无效结果时停止。

Raycast command also controls whether or not Trigger colliders and back-face triangles generate a hit. If hitMultipleFaces is set to true, Raycast command returns multiple hits per Mesh. You should adjust maxHits and result array size accordingly to store all hits. For solid objects (Sphere, Capsule, Box, Convex), this returns a maximum of one result. Use QueryParameters to control hit flags.

Note: Only BatchQuery.ExecuteRaycastJob is logged into the profiler. Query count information is not logged.

另请参阅：Physics.Raycast、Physics.RaycastAll。

using Unity.Collections;
using Unity.Jobs;
using UnityEngine;

public class RaycastExample : MonoBehaviour
{
    private void Start()
    {
        // Perform a single raycast using RaycastCommand and wait for it to complete
        // Setup the command and result buffers
        var results = new NativeArray<RaycastHit>(2, Allocator.TempJob);

        var commands = new NativeArray<RaycastCommand>(1, Allocator.TempJob);

        // Set the data of the first command
        Vector3 origin = Vector3.forward * -10;

        Vector3 direction = Vector3.forward;

        commands[0] = new RaycastCommand(origin, direction, QueryParameters.Default);

        // Schedule the batch of raycasts.
        JobHandle handle = RaycastCommand.ScheduleBatch(commands, results, 1, 2, default(JobHandle));

        // Wait for the batch processing job to complete
        handle.Complete();

        // Copy the result. If batchedHit.collider is null there was no hit
        foreach (var hit in results)
        {
            if (hit.collider != null)
            {
                // If hit.collider is not null means there was a hit
            }
        }

        // Dispose the buffers
        results.Dispose();
        commands.Dispose();
    }
}

变量

构造函数

静态函数