protected void Page_Load(object sender, EventArgs e)
{
MapDAO mm = new MapDAO();
MapEntity entity = mm.getMap();
Dijkstra dijkstra = new Dijkstra();
int[] pre = dijkstra.run(38,entity.dist,41);
StringBuilder sb = new StringBuilder();
int endpoint = 5;
int ss = pre[endpoint];
sb.Append("context.moveTo(" + entity.vertexList[endpoint - 1].x + ", " + entity.vertexList[endpoint-1].y + ");"); // 设置路径起点，坐标为(20,20)
sb.Append("context.lineTo(" + entity.vertexList[ss-1].x + ", " + entity.vertexList[ss-1].y + ");"); // 绘制一条到(200,20)的直线
number = "1<-" + ss + "<-";
while(ss!=38){
ss = pre[ss];
sb.Append("context.lineTo(" + entity.vertexList[ss - 1].x + ", " + entity.vertexList[ss - 1].y + ");"); // 绘制一条到(200,20)的直线
number += ss + "<-";
}
js = sb.ToString();
}
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
int to = Convert.ToInt32(context.Request.QueryString["to"]);
MapDAO mm = new MapDAO();
MapEntity entity = mm.getMap();
Dijkstra dijkstra = new Dijkstra();
int[] pre = dijkstra.run(38, entity.dist, 41);
StringBuilder sb = new StringBuilder();
sb.Append(" var canvas = document.getElementById('demoCanvas');");
sb.Append(" var ctx = canvas.getContext('2d');");
sb.Append(" var image = new Image();");
sb.Append(" image.src = 'img/timg.jpg';");//设置图片的路径
sb.Append(" image.onload = function () {");//当图片加载完成后
sb.Append(" context.drawImage(image, 0, 0);");
sb.Append(" context.beginPath();");
int endpoint = to;
int ss = pre[endpoint];
sb.Append("context.moveTo(" + entity.vertexList[endpoint - 1].x + ", " + entity.vertexList[endpoint - 1].y + ");"); // 设置路径起点，坐标为(20,20)
sb.Append("context.lineTo(" + entity.vertexList[ss - 1].x + ", " + entity.vertexList[ss - 1].y + ");"); // 绘制一条到(200,20)的直线
number = "1<-" + ss + "<-";
while (ss != 38)
{
ss = pre[ss];
sb.Append("context.lineTo(" + entity.vertexList[ss - 1].x + ", " + entity.vertexList[ss - 1].y + ");"); // 绘制一条到(200,20)的直线
number += ss + "<-";
}
sb.Append("context.lineWidth = 2.0;");// 设置线宽
sb.Append("context.strokeStyle = '#CC0000';"); // 设置线的颜色
sb.Append("context.stroke();"); // 进行线的着色，这时整条线才变得可见
sb.Append(" };");
js = sb.ToString();
context.Response.Write(js);
}
protected void Page_Load(object sender, EventArgs e)
{
MapDAO mm = new MapDAO();
MapEntity entity = mm.getMap();
Dijkstra dijkstra = new Dijkstra();
StringBuilder sb = new StringBuilder();
StringBuilder sb2 = new StringBuilder();
Floyd floyd = new Floyd();
ServiceDAO serviceDAO = new ServiceDAO();
List<ServiceEntity> list = serviceDAO.getAllServiceByRestaurantId(1);
ArrayList pointList = new ArrayList();
for(int i=0;i<list.Count;i++){
if (list[i].status == 0 && (pointList.IndexOf(list[i].user_id) == -1) && (list[i].service_type == 0))
{
pointList.Add(list[i].user_id);
}
}
ArrayList result = floyd.getPath(pointList,entity.dist,41,38);
for (int i = 0; i < result.Count;i++ )
{
sb2.Append(result[i]+"->");
}
for (int i = 0; i < result.Count - 1; i++)
{
int[] pre = dijkstra.run((int)result[i], entity.dist, 41);
int endpoint = (int)result[i+1];
int ss = pre[endpoint];
sb.Append("context.moveTo(" + entity.vertexList[endpoint - 1].x + ", " + entity.vertexList[endpoint - 1].y + ");"); // 设置路径起点，坐标为(20,20)
sb.Append("context.lineTo(" + entity.vertexList[ss - 1].x + ", " + entity.vertexList[ss - 1].y + ");"); // 绘制一条到(200,20)的直线
number = "1<-" + ss + "<-";
while (ss != (int)result[i])
{
ss = pre[ss];
sb.Append("context.lineTo(" + entity.vertexList[ss - 1].x + ", " + entity.vertexList[ss - 1].y + ");"); // 绘制一条到(200,20)的直线
number += ss + "<-";
}
}
js = sb.ToString();
number = js;
shortString = sb2.ToString();
StringBuilder sb3 = new StringBuilder();
ArrayList pointList2 = new ArrayList();
for (int i = 0; i < list.Count; i++)
{
if (list[i].status == 0 && (pointList2.IndexOf(list[i].user_id) == -1)&&(list[i].service_type==1))
{
pointList2.Add(list[i].user_id);
}
}
ArrayList result2 = floyd.getPath(pointList2, entity.dist, 41, 38);
for (int i = 0; i < result2.Count - 1; i++)
{
int[] pre = dijkstra.run((int)result2[i], entity.dist, 41);
int endpoint = (int)result2[i + 1];
int ss = pre[endpoint];
sb3.Append("context.moveTo(" + entity.vertexList[endpoint - 1].x + ", " + entity.vertexList[endpoint - 1].y + ");"); // 设置路径起点，坐标为(20,20)
sb3.Append("context.lineTo(" + entity.vertexList[ss - 1].x + ", " + entity.vertexList[ss - 1].y + ");"); // 绘制一条到(200,20)的直线
number = "1<-" + ss + "<-";
while (ss != (int)result2[i])
{
ss = pre[ss];
sb3.Append("context.lineTo(" + entity.vertexList[ss - 1].x + ", " + entity.vertexList[ss - 1].y + ");"); // 绘制一条到(200,20)的直线
number += ss + "<-";
}
}
js2 = sb3.ToString();
StringBuilder sb4 = new StringBuilder();
ArrayList pointList3 = new ArrayList();
for (int i = 0; i < list.Count; i++)
{
if (list[i].status == 0 && (pointList3.IndexOf(list[i].user_id) == -1) && (list[i].service_type == 2))
{
pointList3.Add(list[i].user_id);
}
}
ArrayList result3 = floyd.getPath(pointList3, entity.dist, 41, 38);
for (int i = 0; i < result3.Count - 1; i++)
{
int[] pre = dijkstra.run((int)result3[i], entity.dist, 41);
int endpoint = (int)result3[i + 1];
int ss = pre[endpoint];
sb4.Append("context.moveTo(" + entity.vertexList[endpoint - 1].x + ", " + entity.vertexList[endpoint - 1].y + ");"); // 设置路径起点，坐标为(20,20)
sb4.Append("context.lineTo(" + entity.vertexList[ss - 1].x + ", " + entity.vertexList[ss - 1].y + ");"); // 绘制一条到(200,20)的直线
number = "1<-" + ss + "<-";
while (ss != (int)result3[i])
{
ss = pre[ss];
sb4.Append("context.lineTo(" + entity.vertexList[ss - 1].x + ", " + entity.vertexList[ss - 1].y + ");"); // 绘制一条到(200,20)的直线
number += ss + "<-";
}
}
js3 = sb4.ToString();
}