如何绘制任何3d对象的边界？

Question

对于我做过的立方体/盒子：

void CalcPositons(GameObject objectToDrawTransform)
    {
        Bounds bounds = objectToDrawTransform.GetComponent<MeshFilter>().sharedMesh.bounds;

        Vector3 v3Center = bounds.center;
        Vector3 v3Extents = bounds.extents;

        v3FrontTopLeft = new Vector3(v3Center.x - v3Extents.x, v3Center.y + v3Extents.y, v3Center.z - v3Extents.z);  // Front top left corner
        v3FrontTopRight = new Vector3(v3Center.x + v3Extents.x, v3Center.y + v3Extents.y, v3Center.z - v3Extents.z);  // Front top right corner
        v3FrontBottomLeft = new Vector3(v3Center.x - v3Extents.x, v3Center.y - v3Extents.y, v3Center.z - v3Extents.z);  // Front bottom left corner
        v3FrontBottomRight = new Vector3(v3Center.x + v3Extents.x, v3Center.y - v3Extents.y, v3Center.z - v3Extents.z);  // Front bottom right corner
        v3BackTopLeft = new Vector3(v3Center.x - v3Extents.x, v3Center.y + v3Extents.y, v3Center.z + v3Extents.z);  // Back top left corner
        v3BackTopRight = new Vector3(v3Center.x + v3Extents.x, v3Center.y + v3Extents.y, v3Center.z + v3Extents.z);  // Back top right corner
        v3BackBottomLeft = new Vector3(v3Center.x - v3Extents.x, v3Center.y - v3Extents.y, v3Center.z + v3Extents.z);  // Back bottom left corner
        v3BackBottomRight = new Vector3(v3Center.x + v3Extents.x, v3Center.y - v3Extents.y, v3Center.z + v3Extents.z);  // Back bottom right corner

        v3FrontTopLeft = objectToDrawTransform.transform.TransformPoint(v3FrontTopLeft);
        v3FrontTopRight = objectToDrawTransform.transform.TransformPoint(v3FrontTopRight);
        v3FrontBottomLeft = objectToDrawTransform.transform.TransformPoint(v3FrontBottomLeft);
        v3FrontBottomRight = objectToDrawTransform.transform.TransformPoint(v3FrontBottomRight);
        v3BackTopLeft = objectToDrawTransform.transform.TransformPoint(v3BackTopLeft);
        v3BackTopRight = objectToDrawTransform.transform.TransformPoint(v3BackTopRight);
        v3BackBottomLeft = objectToDrawTransform.transform.TransformPoint(v3BackBottomLeft);
        v3BackBottomRight = objectToDrawTransform.transform.TransformPoint(v3BackBottomRight);
    }

然后我使用LineRenderer绘制线条。 我不想制作大纲着色器。

现在我为测试创建了一个脚本：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class GetBounds : MonoBehaviour
{
    public GameObject objecttodraw;

    private void Start()
    {
        CalcPositons(objecttodraw);
    }

    void CalcPositons(GameObject objectToDrawTransform)
    {
        Bounds bounds = objectToDrawTransform.GetComponent<MeshFilter>().sharedMesh.bounds;

        Vector3 v3Center = bounds.center;
        Vector3 v3Extents = bounds.extents;
    }
}

这是脚本附加到的3d对象以及我想要获取边界的对象：

我正在获取中心和范围，但我现在如何绘制边界？