创建曲线以显示对象在Unity中的投影位置

using UnityEngine;

public class CurveController : MonoBehaviour
{
    public Transform objectToTrack;
    public int numberOfPoints = 100;
    public float curveHeight = 5f;

    private LineRenderer lineRenderer;

    private void Start()
    {
        lineRenderer = GetComponent<LineRenderer>();
    }

    private void Update()
    {
        // 清空之前的曲线点
        lineRenderer.positionCount = 0;

        // 创建新的曲线点
        for (int i = 0; i < numberOfPoints; i++)
        {
            float t = i / (float)numberOfPoints;
            Vector3 position = CalculateCurvePosition(t);
            lineRenderer.positionCount++;
            lineRenderer.SetPosition(i, position);
        }
    }

    private Vector3 CalculateCurvePosition(float t)
    {
        // 根据t值计算曲线上的位置
        float x = t * objectToTrack.position.x;
        float y = curveHeight;
        float z = t * objectToTrack.position.z;

        return new Vector3(x, y, z);
    }
}