private void GenerateRecsForNodeArray()
{
List <Node> nodes = new List <Node>();
MemoryTree.ToList(nodes);
nodes = nodes.Except(CurrentUser.NotShow).Except(CurrentUser.Favourite).ToList();
foreach (Node node in nodes)
{
node.Distance = 0.0;
foreach (Node n in CurrentUser.Favourite)
{
DistanceCalculator calculator = new DistanceCalculator(node, n);
node.Distance += calculator.CalculateDistance((MeasureType)MeasureTypeIndex);
}
node.Distance /= (double)CurrentUser.Favourite.Count();
}
nodes.Sort(delegate(Node node1, Node node2)
{
if (node1 == null && node2 == null)
{
return(0);
}
if (node1 == null)
{
return(-1);
}
if (node2 == null)
{
return(1);
}
if (node1.Distance == node2.Distance)
{
return(0);
}
if (node1.Distance > node2.Distance)
{
return(1);
}
return(-1);
});
Recommendations = new ObservableCollection <Node>(nodes.Take(UsersCount));
AddRecommendationsToItems();
}
private IEnumerable <Node> GenerateRecsForNodeArray()
{
var nodes = new List <Node>();
MemoryTree.ToList(nodes);
nodes = nodes.Except(CurrentUser.NotShow).Except(CurrentUser.Favourite).ToList();
foreach (var node in nodes)
{
node.Distance = 0.0;
foreach (var n in CurrentUser.Favourite)
{
var calculator = new DistanceCalculator(node, n);
node.Distance += calculator.CalculateDistance((MeasureType)MeasureTypeIndex);
}
node.Distance /= (double)CurrentUser.Favourite.Count();
}
nodes.Sort(delegate(Node node1, Node node2)
{
if (node1 == null && node2 == null)
{
return(0);
}
if (node1 == null)
{
return(-1);
}
if (node2 == null)
{
return(1);
}
if (node1.Distance == node2.Distance)
{
return(0);
}
if (node1.Distance > node2.Distance)
{
return(1);
}
return(-1);
});
return(nodes);
}
private void GenerateRecsForSingleNode(Node node)
{
List <Node> nodes = new List <Node>();
MemoryTree.ToList(nodes);
nodes = nodes.Except(CurrentUser.NotShow).Except(new[] { node }).ToList();
foreach (Node n in nodes)
{
DistanceCalculator calculator = new DistanceCalculator(node, n);
n.Distance = calculator.CalculateDistance((MeasureType)MeasureTypeIndex);
}
nodes.Sort(delegate(Node node1, Node node2)
{
if (node1 == null && node2 == null)
{
return(0);
}
if (node1 == null)
{
return(-1);
}
if (node2 == null)
{
return(1);
}
if (node1.Distance == node2.Distance)
{
return(0);
}
if (node1.Distance > node2.Distance)
{
return(1);
}
return(-1);
});
Recommendations = new ObservableCollection <Node>(nodes.Take(RecsLength));
AddRecommendationsToItems();
}
private IEnumerable <Node> GenerateRecsForSingleNode(Node node)
{
var nodes = new List <Node>();
MemoryTree.ToList(nodes);
nodes = nodes.Except(CurrentUser.NotShow).Except(new[] { node }).ToList();
foreach (var n in nodes)
{
var calculator = new DistanceCalculator(node, n);
n.Distance = calculator.CalculateDistance((MeasureType)MeasureTypeIndex);
}
nodes.Sort(delegate(Node node1, Node node2)
{
if (node1 == null && node2 == null)
{
return(0);
}
if (node1 == null)
{
return(-1);
}
if (node2 == null)
{
return(1);
}
if (node1.Distance == node2.Distance)
{
return(0);
}
if (node1.Distance > node2.Distance)
{
return(1);
}
return(-1);
});
return(nodes);
}
/// <summary> Загрузка дерева из JSON-файла. </summary>
private void LoadTreeFromFile()
{
try
{
var fileContent = string.IsNullOrWhiteSpace(Filename) ?
Properties.Resources.tree : File.ReadAllText(Filename);
MemoryTree = JsonSerializer.Deserialize <Tree>(fileContent);
MemoryTree.SetParents();
var root = new TreeViewItem();
root.Header = "Дерево";
MemoryTree.AddToTreeView(root, new ICommand[] { AddToFavouriteCommand, AddToNotShowCommand });
var items = new ObservableCollection <TreeViewItem>();
items.Add(root);
MemoryTreeViewItems = items;
}
catch (ArgumentException)
{
MessageBox.Show($"Ошибка при загрузке дерева: неверный путь к файлу.\n{Filename}", "Ошибка");
}
catch (DirectoryNotFoundException)
{
MessageBox.Show($"Ошибка при загрузке дерева: указанный путь не существует.\n{Filename}", "Ошибка");
}
catch (JsonException)
{
MessageBox.Show("Ошибка при загрузке дерева: неверный формат данных.", "Ошибка");
}
catch (Exception e)
{
while (e.InnerException != null)
{
e = e.InnerException;
}
MessageBox.Show($"Ошибка при загрузке дерева: {e.Message}", "Ошибка");
}
}
