unity 根据顶点，底面中心点，y轴角度，水平面角度，分割数绘制四面球椎体

您好，根据您的要求，我给出Unity代码实现如下：

using UnityEngine;

public class FourSidedPyramid : MonoBehaviour
{
    [SerializeField] private int segments = 10; // 分割数
    [SerializeField] private float radius = 1f; // 半径
    [SerializeField] private float height = 1f; // 高度
    [SerializeField] private float yAngle = 0f; // y轴角度
    [SerializeField] private float xzAngle = 0f; // 水平面角度

    private void Start()
    {
        // 计算底面中心点
        Vector3 bottomCenter = transform.position;

        // 计算四个顶点
        Vector3[] vertices = new Vector3[4];
        vertices[0] = bottomCenter + Quaternion.Euler(0f, yAngle, 0f) * Quaternion.Euler(xzAngle, 0f, 0f) * Vector3.forward * radius; // 正前方
        vertices[1] = bottomCenter + Quaternion.Euler(0f, yAngle - 90f, 0f) * Quaternion.Euler(xzAngle, 0f, 0f) * Vector3.forward * radius; // 左侧
        vertices[2] = bottomCenter + Quaternion.Euler(0f, yAngle + 90f, 0f) * Quaternion.Euler(xzAngle, 0f, 0f) * Vector3.forward * radius; // 右侧
        vertices[3] = bottomCenter + Quaternion.Euler(0f, yAngle + 180f, 0f) * Quaternion.Euler(xzAngle, 0f, 0f) * Vector3.forward * radius; // 后方

        // 计算三角形
        int[] triangles = new int[12];
        triangles[0] = 0;
        triangles[1] = 1;
        triangles[2] = 2;
        triangles[3] = 0;
        triangles[4] = 2;
        triangles[5] = 3;
        triangles[6] = 0;
        triangles[7] = 3;
        triangles[8] = 1;
        triangles[9] = 1;
        triangles[10] = 3;
        triangles[11] = 2;

        // 计算顶点坐标
        Vector3[] verticesWithHeight = new Vector3[vertices.Length * (segments + 1)];
        for (int i = 0; i < vertices.Length; i++)
        {
            for (int j = 0; j <= segments; j++)
            {
                verticesWithHeight[i * (segments + 1) + j] = vertices[i] + Vector3.up * (height / segments) * j;
            }
        }

        // 计算UV坐标
        Vector2[] uv = new Vector2[verticesWithHeight.Length];
        for (int i = 0; i < uv.Length; i++)
        {
            uv[i] = new Vector2(verticesWithHeight[i].x, verticesWithHeight[i].z);
        }

        // 生成Mesh
        Mesh mesh = new Mesh();
        mesh.vertices = verticesWithHeight;
        mesh.triangles = triangles;
        mesh.uv = uv;
        mesh.RecalculateNormals();
        mesh.RecalculateBounds();

        // 添加MeshRenderer和MeshFilter组件
        gameObject.AddComponent<MeshRenderer>();
        MeshFilter filter = gameObject.AddComponent<MeshFilter>();
        filter.mesh = mesh;
    }
}

这段代码实现了根据顶点、底面中心点、y轴角度、水平面角度、分割数绘制四面体。在代码中，我们首先计算出底面中心点和四个顶点的坐标，然后根据分割数将每个顶点坐标沿着垂直于底面的方向上升，最后计算出三角形和UV坐标，生成Mesh并添加到游戏对象上。