请问下面这样的路径规划动态图应该如何制作

代码下载：https://download.csdn.net/download/caozhy/11449907

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Q770812
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private int[,] area;

        private int step = 1;

        private void button1_Click(object sender, EventArgs e)
        {
            //step++;
            for (int k = 0; k < step; k++)
            {
                for (int i = 0; i < 30; i++)
                {
                    for (int j = 0; j < 15; j++)
                    {
                        if (area[i, j] == 4) area[i, j] = 1;
                    }
                }
                for (int i = 0; i < 30; i++)
                {
                    for (int j = 0; j < 15; j++)
                    {
                        if (area[i, j] == 0)
                        {
                            bool pt = false;
                            for (int ii = (i > 0 ? i - 1 : 0); ii <= (i < 29 ? i + 1 : 29); ii++)
                                for (int jj = (j > 0 ? j - 1 : 0); jj <= (j < 14 ? j + 1 : 14); jj++)
                                {
                                    if ((ii == i && jj != j) || (ii != i && jj == j))
                                        if (area[ii, jj] == 1) pt = true;
                                }
                            area[i, j] = pt ? 4 : area[i, j];
                        }
                    }
                }
            }
            pictureBox1.Refresh();
        }

        private void pictureBox1_Paint(object sender, PaintEventArgs e)
        {
            if (area == null) return;
            var g = e.Graphics;
            g.FillRectangle(Brushes.White, 0f, 0f, pictureBox1.Width, pictureBox1.Height);
            for (int i = 0; i < 30; i++)
            {
                for (int j = 0; j < 15; j++)
                {
                    Brush br = new SolidBrush(Color.FromArgb(110, 136, 199));
                    switch (area[i, j])
                    {
                        case 0:
                            br = new SolidBrush(Color.FromArgb(219, 213, 213));
                            break;
                        case 1:
                            br = new SolidBrush(Color.FromArgb(202, 190, 180));
                            break;
                        case 3:
                            br = new SolidBrush(Color.FromArgb(134, 134, 122));
                            break;
                    }
                    g.FillRectangle(br, 10.0f + i * 20.0f, 10.0f + j * 20.0f, 18.0f, 18.0f);
                }
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            area = new int[30, 15];
            for (int i = 0; i < 30; i++)
            {
                for (int j = 0; j < 15; j++)
                    area[i, j] = 0;
            }
            for (int i = 3; i <= 11; i++)
            {
                area[3, i] = 3;
                area[4, i] = 3;
            }
            for (int i = 4; i <= 14; i++)
            {
                area[13, i] = 3;
                area[14, i] = 3;
            }
            for (int i = 0; i <= 6; i++)
            {
                area[22, i] = 3;
                area[23, i] = 3;
            }
            for (int i = 0; i <= 6; i++)
            {
                area[22, i] = 3;
                area[23, i] = 3;
            }
            for (int i = 5; i <= 6; i++)
            {
                area[24, i] = 3;
                area[25, i] = 3;
                area[26, i] = 3;
            }
            area[8, 7] = 1;
            step = 1;
            pictureBox1.Refresh();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            button2.PerformClick();
        }
    }
}

namespace Q770812
{
    partial class Form1
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.pictureBox1 = new System.Windows.Forms.PictureBox();
            this.button1 = new System.Windows.Forms.Button();
            this.button2 = new System.Windows.Forms.Button();
            ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
            this.SuspendLayout();
            // 
            // pictureBox1
            // 
            this.pictureBox1.BackColor = System.Drawing.Color.White;
            this.pictureBox1.Location = new System.Drawing.Point(30, 12);
            this.pictureBox1.Name = "pictureBox1";
            this.pictureBox1.Size = new System.Drawing.Size(616, 319);
            this.pictureBox1.TabIndex = 0;
            this.pictureBox1.TabStop = false;
            this.pictureBox1.Paint += new System.Windows.Forms.PaintEventHandler(this.pictureBox1_Paint);
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(431, 354);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(90, 25);
            this.button1.TabIndex = 1;
            this.button1.Text = "next";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // button2
            // 
            this.button2.Location = new System.Drawing.Point(556, 354);
            this.button2.Name = "button2";
            this.button2.Size = new System.Drawing.Size(90, 25);
            this.button2.TabIndex = 2;
            this.button2.Text = "reset";
            this.button2.UseVisualStyleBackColor = true;
            this.button2.Click += new System.EventHandler(this.button2_Click);
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(673, 391);
            this.Controls.Add(this.button2);
            this.Controls.Add(this.button1);
            this.Controls.Add(this.pictureBox1);
            this.Name = "Form1";
            this.Text = "Form1";
            this.Load += new System.EventHandler(this.Form1_Load);
            ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit();
            this.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.PictureBox pictureBox1;
        private System.Windows.Forms.Button button1;
        private System.Windows.Forms.Button button2;
    }
}