/// <summary>
/// Update the attributes of the rectangles associated to the wire
/// </summary>
private void Redraw()
{
SortNodes();
// Positions of vertices
Node[] vertices = new Node[4];
vertices[0] = ExtremitiesNodes[0];
if (ExtremitiesNodes[0].Position.Y < ExtremitiesNodes[1].Position.Y)
{
vertices[1] = BoardGrid.Magnetize(new Point((ExtremitiesNodes[0].Position.X + ExtremitiesNodes[1].Position.X) / 2, ExtremitiesNodes[0].Position.Y));
}
else
{
vertices[1] = BoardGrid.Magnetize(new Point((ExtremitiesNodes[0].Position.X + ExtremitiesNodes[1].Position.X) / 2, ExtremitiesNodes[1].Position.Y));
}
vertices[2] = BoardGrid.Magnetize(new Point((ExtremitiesNodes[0].Position.X + ExtremitiesNodes[1].Position.X) / 2, ExtremitiesNodes[1].Position.Y));
vertices[3] = ExtremitiesNodes[1];
// Set the rectangles position and size
for (int k = 0; k < 3; k++)
{
Canvas.SetLeft(Rectangles[k], vertices[k].Position.X - Thickness / 2);
Canvas.SetTop(Rectangles[k], vertices[k].Position.Y - Thickness / 2);
if (k == 1) // The middle rectangle is the vertical one
{
Rectangles[k].Height = Math.Abs(vertices[0].Position.Y - vertices[2].Position.Y) + Thickness; // Size
Rectangles[k].Width = Thickness;
}
else // The two other rectangles are horizontal
{
Rectangles[k].Height = Thickness; // Size
Rectangles[k].Width = Math.Abs(vertices[k + 1].Position.X - vertices[k].Position.X) + Thickness;
}
}
}
/// <summary>
/// Called when the mouse moves
/// </summary>
public void DragOver(Point mousePos)
{
Node newNode = BoardGrid.Magnetize(mousePos + MouseOffset);
// Move the wire if the new node is inside the canvas and different from the former node
if (!(newNode.Position.X < -BoardGrid.GridThickness || newNode.Position.Y < -BoardGrid.GridThickness || newNode.Position.X > BoardGrid.ActualWidth + BoardGrid.GridThickness || newNode.Position.Y > BoardGrid.ActualHeight + BoardGrid.GridThickness))
{
if (newNode != DraggingNode)
{
DraggingNode = newNode;
Wire.Nodes = new List <Node>()
{
StaticNode, DraggingNode
}; // Move the wire
}
}
}
/// <summary>
/// Connect all anchors to the nearest nodes
/// </summary>
private void ConnectToNodes()
{
ClearNodes(); // Clear previous connections
foreach (Vector anchor in Anchors)
{
Node node = BoardGrid.Magnetize(ImagePosition + anchor); // The nearest node
Vector nodeRelativePosition = node.Position - ImagePosition; // Node position relative to the image
Directions direction = new Directions(); // Direction of the component relative to the node
try
{
if (Math.Abs(ImageSize.X - nodeRelativePosition.X) < Properties.Settings.Default.GridThickness) // The grid thickness is used as an error threshold
{
direction = Directions.Left;
}
else if (Math.Abs(ImageSize.Y - nodeRelativePosition.Y) < Properties.Settings.Default.GridThickness)
{
direction = Directions.Up;
}
else if (Math.Abs(nodeRelativePosition.Y) < Properties.Settings.Default.GridThickness)
{
direction = Directions.Down;
}
else if (Math.Abs(nodeRelativePosition.X) < Properties.Settings.Default.GridThickness)
{
direction = Directions.Right;
}
else
{
throw new System.ApplicationException("Can't determine anchor position relatively to the node.");
}
}
catch (System.ApplicationException e)
{
((MainWindow)Application.Current.MainWindow).LogError(e); // Write error to log and close the processus
}
ConnectedNodes.Add(node);
node.ConnectedElements.Add(this, direction);
}
}