Handles.zTest

描述

手柄的 zTest。

默认值为 Always。

\ 此锚点显示第一个向下碰撞体交叉点。深度通道线显示为绿色，若深度测试失败，则显示为红色。

要使用此示例，请将此脚本附加到您希望向其显示锚点的对象：

using UnityEngine;
using UnityEditor;

[ExecuteInEditMode]
public class SampleAnchor : MonoBehaviour
{
    void OnDrawGizmosSelected()
    {
        Ray ray = new Ray(transform.position, Vector3.down);
        RaycastHit hit;
        if (Physics.Raycast(ray, out hit))
        {
            Handles.color = Color.green;
            Handles.zTest = UnityEngine.Rendering.CompareFunction.LessEqual;
            Handles.DrawLine(transform.position, hit.point);
            Handles.DrawWireDisc(hit.point, hit.normal, 0.5f);

            Handles.color = Color.red;
            Handles.zTest = UnityEngine.Rendering.CompareFunction.Greater;
            Handles.DrawLine(transform.position, hit.point);
            Handles.DrawWireDisc(hit.point, hit.normal, 0.5f);
        }
    }
}