private void AddVertexToGraph(Vertex addToVertex)
{
Point p = Mouse.GetPosition(Canvas); // pozycja myszy
int vertexesCount = Graph.Vertexes.Count;
Vertex newVertex =
new Vertex
{
X = Convert.ToInt32(p.X),
Y = Convert.ToInt32(p.Y),
Index = vertexesCount,
};
if (Graph.Vertexes.Count >= 1)
{
DrawEdge(addToVertex, newVertex);
Canvas.Children.Remove(_selectedImage);
// usuwanie i rysowanie wierzchołka na nowy, żeby był widoczy nad liną
Canvas.Children.Add(_selectedImage);
_selectedIndex = Canvas.Children.Count - 1;
addToVertex.CanvasIndex = _selectedIndex;
}
Graph.Vertexes.Add(newVertex);
addToVertex.Neibourghs.Add(newVertex); // Dodajemy sąsiadów każdemu wierzchołkowi, do użycia w algorytmach
newVertex.Neibourghs.Add(addToVertex);
DrawVertex(Graph.Vertexes[vertexesCount]);
}
private void Canvas_MouseDown(object sender, MouseButtonEventArgs e)
{
string localPath = AppDomain.CurrentDomain.BaseDirectory;
if (e.OriginalSource is Image && !_selected)
{
Image originalImage = e.OriginalSource as Image;
BitmapImage source = new BitmapImage();
source.BeginInit();
source.UriSource = new Uri(localPath + "Circle_Orange.png", UriKind.Absolute);
source.EndInit();
originalImage.Source = source;
_selectedImage = originalImage;
_selected = true;
_selectedIndex = Canvas.Children.IndexOf(originalImage);
return;
}
else if (e.OriginalSource is Image && _selected)
{
Image originalImage = e.OriginalSource as Image;
if (CbxMode.SelectedIndex == 1)
{
int deleteindex = Graph.GetIndex(_selectedIndex);
foreach (
int x in
Graph.Vertexes.Where(n => n.CanvasIndex == _selectedIndex).SelectMany(v => v.EdgesIndex))
{
Canvas.Children.RemoveAt(x);
}
Canvas.Children.Remove(originalImage);
Graph.Vertexes.RemoveAt(deleteindex);
}
}
if (_selected && CbxMode.SelectedIndex == 0)
{
if (e.OriginalSource is Image)
{
Image img = e.OriginalSource as Image;
int index = Canvas.Children.IndexOf(img);
Vertex v1 = Graph.Vertexes[Graph.GetIndex(_selectedIndex)];
Vertex v2 = Graph.Vertexes[Graph.GetIndex(index)];
JoinVertexes(v1, v2);
}
else
{
int index = Graph.GetIndex(_selectedIndex);
AddVertexToGraph(Graph.Vertexes[index]);
}
}
else if (!_selected && CbxMode.SelectedIndex == 0)
{
Point p = Mouse.GetPosition(Canvas);
Vertex v = new Vertex
{
X = Convert.ToInt32(p.X),
Y = Convert.ToInt32(p.Y),
Index = Graph.Vertexes.Count,
};
DrawVertex(v);
Graph.Vertexes.Add(v);
}
}
private void DrawVertex(Vertex v)
{
string localPath = AppDomain.CurrentDomain.BaseDirectory;
Image img = new Image();
img.Width = 30;
img.Height = 30;
BitmapImage source = new BitmapImage();
source.BeginInit();
source.UriSource = new Uri(localPath + "Circle_Blue.png", UriKind.Absolute);
source.EndInit();
img.Source = source;
Canvas.SetTop(img, v.Y);
Canvas.SetLeft(img, v.X);
Canvas.Children.Add(img);
v.CanvasIndex = Canvas.Children.IndexOf(img);
}
private void JoinVertexes(Vertex vertex1, Vertex vertex2)
{
DrawEdge(vertex1, vertex2);
vertex1.Neibourghs.Add(vertex2);
vertex2.Neibourghs.Add(vertex1);
Image img = Canvas.Children[vertex1.CanvasIndex] as Image;
Canvas.Children.Remove(img);
Canvas.Children.Add(img);
_selectedIndex = Canvas.Children.Count - 1;
vertex1.CanvasIndex = _selectedIndex;
img = Canvas.Children[vertex2.CanvasIndex] as Image;
Canvas.Children.Remove(img);
Canvas.Children.Add(img);
}
private void DrawEdge(Vertex vertex1, Vertex vertex2)
{
int index;
Line line = new Line();
line.Stroke = Brushes.LightSteelBlue;
line.X1 = vertex1.X + 15;
line.Y1 = vertex1.Y + 15;
line.X2 = vertex2.X + 15;
line.Y2 = vertex2.Y + 15;
line.StrokeThickness = 5;
Canvas.Children.Add(line);
index = Canvas.Children.IndexOf(line);
vertex1.EdgesIndex.Add(index);
//Dodajemy numer indeksu lini na canvasie, żeby potem je móc łatwo odnaleźć i usunąć
vertex2.EdgesIndex.Add(index);
}