private VideoParser.Video getNearestVideo(double lat, double lon)
{
var videos = _nodeTree.GetAllTrackVideos();
if (videos == null)
{
return(null);
}
VideoParser.Video nearestVideo = null;
double minDist = 5.0 / 60;
foreach (var video in videos)
{
double dir = 90.0 - 180.0 / Math.PI * Math.Atan2(lat - video.PanTiltUnit.Latitude, lon - video.PanTiltUnit.Longitude);
if (dir < 0)
{
dir += 360.0;
}
double left = video.PanTiltUnit.LeftLimit;
double right = video.PanTiltUnit.RightLimit;
if (right < left)
{
if (dir < right)
{
dir += 360.0;
}
right += 360.0;
}
if (dir > left && dir < right)
{
double dist = getDist(new Point(video.PanTiltUnit.Longitude, video.PanTiltUnit.Latitude), new Point(lon, lat));
if (dist < minDist)
{
minDist = dist;
nearestVideo = video;
}
}
}
return(nearestVideo);
}
public bool IsSameNode(VideoParser.Node node)
{
lock (_trackVideos)
{
if (_trackVideos.Count == 0)
{
return(false);
}
CCTVNodeTree newNode = new CCTVNodeTree();
newNode.AddTrackVideo(node);
if (isSameVideos(newNode.GetAllTrackVideos()))
{
return(true);
}
return(false);
}
}
