{
 if (juli(ps, aa[i]) < 30.0)
                            ac[j++] = aa[i];
                    }
                    if (j == 1)
                    {
                        MessageBox.Show("找不到");
                        this.Close();}
                    double min = juli(ps, pd);
                    for (int i = 0; i < j; i++)
                        if (juli(ac[i], pd) < min)
                        {
                             ps1=ac[i];
                            min = juli(ps1, pd);
                        }
                    jl[0] += juli (ps, ps1);
                    nl[0] += (juli(ps, ps1) * juli(ps, ps1));
                    ps = ps1;
                    ad[h++] = ps;}
                jl[0] += juli(ad[h-1], pd);
                nl[0] += (juli(ad[h - 1], pd) * juli(ad[h - 1], pd));
                ts[0] = h+1;
                Graphics g = this.CreateGraphics();
                Bitmap bitmap = new Bitmap(@"d:\无线传感器.jpg");
                g.DrawImage(bitmap, 0, 0, 700, 300);
                Pen pen = new Pen(Color.Red, 2);
                g.DrawLine(pen, new Point((int)qd.x, (int)qd.y), new Point((int)ad[0].x, (int)ad[0].y));
                for (int i = 0; i < h - 1; i++)
                    g.DrawLine(pen, new Point((int)ad[i].x, (int)ad[i].y), new Point((int)ad[i + 1].x, (int)ad[i + 1].y)); 无线传感器网络中数据传输最优路径选择(13):http://www.751com.cn/tongxin/lunwen_2234.html