private async void Make4Maps(int width, int height, int radius, List <HeatPoint> points,
float opacity, ColorRamp cr)
{
HeatMapMaker hmMaker = new HeatMapMaker
{
Width = width,
Height = height,
Radius = radius,
ColorRamp = cr,
HeatPoints = points,
Opacity = opacity
};
pictureBox2.BackgroundImage = await hmMaker.MakeHeatMap(); // ***renklendirilmiş asıl heatmap***
pictureBox1.BackgroundImage = hmMaker.GrayMap;
DisplayInfo();
}
private async void make4Maps(int width, int height, int radius, List <HeatPoint> points, float opacity, ColorRamp cr)
{
var hmMaker = new HeatMapMaker
{
Width = width,
Height = height,
Radius = radius,
ColorRamp = cr,
HeatPoints = points,
Opacity = opacity
};
this.pictureBox2.BackgroundImage = await hmMaker.MakeHeatMap();
//
this.pictureBox1.BackgroundImage = hmMaker.GrayMap;
//
displayInfo();
}
public byte[] GetHeatMapImage(string beginTime, string endTime, string url, string urlEncoding, int screenWidth, int screenHeight)
{
/*
* 1.获取Url网页快照
* 2.查询数据库访客点击表记录
* 3.校正偏移访客点击坐标点数据
* 4.绘制访客点击热力图
* 5.缓存查询结果并返回热力图
*/
try
{
//获取网页快照
var webPageImage = WebPreview.GetWebPreview(new Uri(url), 30000, screenWidth, screenHeight, true);
//设置heatPoint
var apiUrl = string.Format(ApiFormat, urlEncoding, beginTime, endTime, screenWidth, screenHeight);
var json = GetHtmlSource(apiUrl);
var heatMapMessage = JsonConvert.DeserializeObject <List <HeatMapMessage> >(json);
var heatPoints = new List <HeatPoint>();
if (heatMapMessage != null)
{
heatPoints = heatMapMessage.Select(m => new HeatPoint {
W = 1, X = m.X, Y = m.Y
}).ToList();
}
//生成热力图
var heatMapMaker = new HeatMapMaker
{
Width = webPageImage.Width,
Height = webPageImage.Height,
Radius = 20,
ColorRamp = ColorRamp.THERMAL,
HeatPoints = heatPoints,
Opacity = 0.8f
};
var heatMapImage = heatMapMaker.MakeHeatMap().Result;
//场景图与热力图合并
using (var g = Graphics.FromImage(webPageImage))
{
var rectangle = new Rectangle(0, 0, webPageImage.Width, webPageImage.Height);
g.DrawImage(heatMapImage, rectangle);
}
//加入缓存
var imageBytes = webPageImage.ToImageBytes();
webPageImage.Dispose();
return(imageBytes);
}
catch (Exception ex)
{
_logger.Error(ex);
return(null);
}
}
