Unity3D GUI绘制折线图

using UnityEngine;using System.Collections;using System;public class DrawLine : MonoBehaviour {    public Vector2[] m_point;//特征点位置    public Color m_lineColor;    private static Texture2D m_texure;//最终渲染得到的带有折线的纹理    public void InitCanvas(Vector2[] point, int width, int height) {        m_point = point;        m_texure = new Texture2D(width,height);    }    public IEnumerator Draw()    {        //清空纹理对象        for (int i = 0; i < 100; i++)        {            for (int j = 0; j < 100; j++)            {                m_texure.SetPixel(i, j, Color.white);            }        }        Vector2 currentPoint = m_point[0];        for (int i = 1; i < m_point.Length; i++) {            for (float j = 0; j < 1; j = j + 0.01f) {                Vector2 temp = Vector2.Lerp(m_point[i-1],m_point[i],j);                m_texure.SetPixel(Convert.ToInt32(temp.x),Convert.ToInt32(temp.y),m_lineColor);            }            currentPoint = m_point[i];        }        m_texure.Apply();        yield return m_texure;    }    void OnPostRender()    {        StartCoroutine(Draw());    }    void Start() {        InitCanvas(m_point, 100, 100);    }    void OnGUI()    {        GUI.DrawTexture(new Rect(0, 0, 100, 100), m_texure);    }}