雷达图Slider拖动改变数据

 

 //效果

//制作雷达图

using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using UnityEngine.UI;

public class RadarMapDown : MaskableGraphic
{
public float[] arr;//边数数组
protected override void OnPopulateMesh(VertexHelper vh)
{
vh.Clear();
int num = arr.Length;//几边形就是几个
if (num >= 3)//最小值必须大于3不然没法绘制
{

Rect rect = rectTransform.rect;//获取当前矩形的数据
float r = rect.width < rect.height ? rect.width / 2 : rect.height / 2;//判断是宽大还是高大，哪个小用哪个，否则会出矩形范围
float q = r / arr.Max();//半径与数组最大值的比值 防止出圈
float ang = Mathf.PI * 2 / num;//一个圆360度所以π*2
//圆心
vh.AddVert(Vector3.zero, color, new Vector2(0.5f, 0.5f));//获得圆心顶点 坐标 颜色 UI坐标
for (int i = 0; i < num; i++)
{
float x = Mathf.Sin(i * ang) * arr[i] * q;//求x
float y = Mathf.Cos(i * ang) * arr[i] * q;//求y
float uvx = (x + r) / (r + r);//求比值获得uv坐标
float uvy = (y + r) / (r + r);
vh.AddVert(new Vector3(x, y, 0), color, new Vector2(uvx, uvy));//记录顶点坐标
if (i == 0)
{
vh.AddTriangle(0, num, 1);//补角 先画最后一个角
}
else
{
vh.AddTriangle(0, i, i + 1);//做图
}

}
}

}
}

//设置Slider

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

public class Sliders : MonoBehaviour
{
public RadarMap radarMap;
public Slider[] arr;

// Start is called before the first frame update
void Start()
{
for (int i = 0; i < arr.Length; i++)
{
arr[i].maxValue = radarMap.r;//将所有Value的最大值设置为雷达图的半径
}

}

// Update is called once per frame
void Update()
{
for (int i = 0; i < arr.Length; i++)
{
if (arr[i].value!=0)
{
radarMap.arr[i] = arr[i].value;//更改边的数据
radarMap.SetAllDirty();//设置脏数据
}
}
}
}