使用unity mesh类生成圆锥体可视范围，请给出具体代码

以下是使用 Unity Mesh 类生成圆锥体可视范围的示例代码：

using UnityEngine;

public class ConeMeshGenerator : MonoBehaviour
{
    public float radius = 1f;
    public float height = 2f;
    public int segments = 32;

    private MeshFilter meshFilter;

    private void Awake()
    {
        meshFilter = GetComponent<MeshFilter>();
    }

    private void Start()
    {
        GenerateConeMesh();
    }

    private void GenerateConeMesh()
    {
        Mesh mesh = new Mesh();

        Vector3[] vertices = new Vector3[segments + 2];
        int[] triangles = new int[segments * 3];

        vertices[0] = Vector3.zero;
        for (int i = 0; i <= segments; i++)
        {
            float angle = i * Mathf.PI * 2f / segments;
            float x = Mathf.Cos(angle) * radius;
            float z = Mathf.Sin(angle) * radius;
            vertices[i + 1] = new Vector3(x, 0f, z);
        }
        vertices[segments + 1] = new Vector3(0f, height, 0f);

        for (int i = 0; i < segments; i++)
        {
            triangles[i * 3] = 0;
            triangles[i * 3 + 1] = i + 1;
            triangles[i * 3 + 2] = i + 2;
        }
        triangles[segments * 3 - 1] = 1;

        mesh.vertices = vertices;
        mesh.triangles = triangles;

        meshFilter.mesh = mesh;
    }
}

这段代码会在场景中创建一个圆锥体，并将其渲染出来。你可以在 Unity 编辑器中调整圆锥体的半径、高度和分段数，以获得不同的效果。