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

public class MyDraw : MonoBehaviour
{
    public GameObject pointobj;
    private void Start()
    {
        //DrawRound(new Vector3(1,0,0),5, 4).ForEach(a => 
        //{
        //    GameObject obj = Instantiate<GameObject>(pointobj);
        //    obj.transform.position = a;
        //});


        DrawElliptic(new Vector2(10,5), 8, 4).ForEach(a => 
        {
            GameObject obj = Instantiate<GameObject>(pointobj);
            obj.transform.position = a;
        });
    }

    /// <summary>
    /// 计算圆形的坐标点
    /// </summary>
    /// <param name="centerPoint">中心点</param>
    /// <param name="radius">半径</param>
    /// <param name="numPoints">生成点的数量</param>
    public static List<Vector3> DrawRound(Vector3 centerPoint,float radius,int numPoints)
    {
        List<Vector3> tmplist=new List<Vector3>();
        for (int i = 0; i < numPoints; i++)
        {
            double angleInRadians = Math.PI * 2 / numPoints * i; // 根据角度计算每个点对应的弧度值

            double x = radius * Math.Sin(angleInRadians); // 通过三角函数计算x坐标
            double y = radius * Math.Cos(angleInRadians); // 通过三角函数计算y坐标

            //Debug.Log("Point " + (i + 1) + ": (" + x.ToString() + ", " + y.ToString() + ")");
            tmplist.Add(new Vector3((float)x, (float)y, 0)+ centerPoint);
        }
        return tmplist;
    }

    /// <summary>
    /// 
    /// </summary>
    /// <param name="center"></param>
    /// <param name="radiusX"></param>
    /// <param name="radiusY"></param>
    /// <returns></returns>

    public static List<Vector3> DrawElliptic(Vector2 center, float radiusX, float radiusY)
    {
        List<Vector3> tmplist = new List<Vector3>();
        for (float angle = 0f; angle <= Math.PI * 2; angle += 0.5f)
        {
            double x = center.x + radiusX * Math.Sin(angle);
            double y = center.y - radiusY * Math.Cos(angle);

            tmplist.Add(new Vector3((float)x,(float)y,0));
        }
        return tmplist;
    }


}