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implemente the knot node

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This commit is contained in:
Ankitkumar Satapara
2026-04-20 20:16:53 +05:30
parent e79457a952
commit f604f58068
7 changed files with 152 additions and 1 deletions
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76
Examples/Nodify.Calculator/CalculatorViewModel.cs
View File

@@ -42,6 +42,9 @@ namespace Nodify.Calculator
// Dynamic ForEach node: adapt Current Item output based on list type
if (!IsLoading) HandleForEachNodeConnected(c);
// Dynamic Knot node: adapt shape/color to match connected wire
if (!IsLoading) HandleKnotNodeConnected(c);
})
.WhenRemoved(c =>
{
@@ -74,6 +77,9 @@ namespace Nodify.Calculator
// Dynamic ForEach node: reset Current Item output on disconnect
HandleForEachNodeDisconnected(c);
// Dynamic Knot node: reset on disconnect
HandleKnotNodeDisconnected(c);
});
Operations.WhenAdded(x =>
@@ -137,6 +143,12 @@ namespace Nodify.Calculator
public PendingConnectionViewModel PendingConnection { get; set; } = new PendingConnectionViewModel();
public OperationsMenuViewModel OperationsMenu { get; set; }
public void CreateKnotNodeAt(Point location)
{
var knot = new KnotOperationViewModel { Location = location };
Operations.Add(knot);
}
public INodifyCommand StartConnectionCommand { get; }
public INodifyCommand CreateConnectionCommand { get; }
public INodifyCommand DisconnectConnectorCommand { get; }
@@ -152,6 +164,7 @@ namespace Nodify.Calculator
internal bool CanCreateConnection(ConnectorViewModel source, ConnectorViewModel? target)
=> target == null || (source != target &&
(source.Shape == target.Shape ||
source.IsKnotConnector || target.IsKnotConnector ||
((source.IsCopyConnector || target.IsCopyConnector) && source.Shape != ConnectorShape.Triangle && target.Shape != ConnectorShape.Triangle)) &&
!source.IsConnected &&
!target.IsConnected &&
@@ -714,6 +727,69 @@ namespace Nodify.Calculator
}
}
private void HandleKnotNodeConnected(ConnectionViewModel c)
{
ConnectorViewModel knotConn = null;
ConnectorViewModel sourceConn = null;
if (c.Input.IsKnotConnector)
{
knotConn = c.Input;
sourceConn = c.Output;
}
else if (c.Output.IsKnotConnector)
{
knotConn = c.Output;
sourceConn = c.Input;
}
if (knotConn == null) return;
var knotOp = knotConn.Operation as KnotOperationViewModel;
if (knotOp == null) return;
// Adapt both input and output connectors to match the connected wire's shape/color/type
foreach (var conn in knotOp.Input.Concat(knotOp.Output))
{
if (conn.Shape != ConnectorShape.Triangle)
{
conn.Shape = sourceConn.Shape;
conn.ConnectorColor = sourceConn.RawColor;
conn.DataType = sourceConn.DataType;
}
}
}
private void HandleKnotNodeDisconnected(ConnectionViewModel c)
{
ConnectorViewModel knotConn = null;
if (c.Input.IsKnotConnector)
knotConn = c.Input;
else if (c.Output.IsKnotConnector)
knotConn = c.Output;
if (knotConn == null) return;
var knotOp = knotConn.Operation as KnotOperationViewModel;
if (knotOp == null) return;
// Check if any connection still exists on the knot
var stillConnected = Connections.Any(con =>
(con.Input.IsKnotConnector && con.Input.Operation == knotOp) ||
(con.Output.IsKnotConnector && con.Output.Operation == knotOp));
if (stillConnected) return;
// Reset to default
foreach (var conn in knotOp.Input.Concat(knotOp.Output))
{
conn.Shape = ConnectorShape.Circle;
conn.ConnectorColor = System.Drawing.Color.DodgerBlue;
conn.DataType = null;
}
}
private void HandleForEachNodeDisconnected(ConnectionViewModel c)
{
ConnectorViewModel forEachListInput = null;

10
Examples/Nodify.Calculator/ConnectorViewModel.cs
View File

@@ -121,6 +121,16 @@ namespace Nodify.Calculator
set => SetProperty(ref _isCopyConnector, value);
}
private bool _isKnotConnector;
/// <summary>
/// When true, this connector belongs to a Knot/Reroute node and accepts any shape for connections.
/// </summary>
public bool IsKnotConnector
{
get => _isKnotConnector;
set => SetProperty(ref _isKnotConnector, value);
}
private bool _isTakeListConnector;
/// <summary>
/// When true, this connector belongs to a TAKE node and only accepts list/array types.

14
Examples/Nodify.Calculator/EditorView.xaml
View File

@@ -646,6 +646,20 @@
</nodify:Node>
</DataTemplate>
<DataTemplate DataType="{x:Type local:KnotOperationViewModel}">
<nodify:Node Input="{Binding Input}"
Output="{Binding Output}"
Background="#FF2A2A2A"
BorderBrush="#FF666666"
BorderThickness="1"
Padding="0"
ToolTip="Knot (Reroute) — Ctrl+Click to create">
<Ellipse Width="8" Height="8"
Fill="#FFAAAAAA"
Margin="2" />
</nodify:Node>
</DataTemplate>
<DataTemplate DataType="{x:Type local:OperationViewModel}">
<nodify:Node Content="{Binding Title}"
Input="{Binding Input}"

21
Examples/Nodify.Calculator/EditorView.xaml.cs
View File

@@ -34,6 +34,26 @@ namespace Nodify.Calculator
}
}
public class KnotNodeHandler : InputElementState<NodifyEditor>
{
private static InputGesture CreateKnotGesture { get; } = new Interactivity.MouseGesture(MouseAction.LeftClick, ModifierKeys.Control);
public KnotNodeHandler(NodifyEditor element) : base(element)
{
ProcessHandledEvents = true;
}
protected override void OnMouseUp(MouseButtonEventArgs e)
{
if (CreateKnotGesture.Matches(e.Source, e) && Element.DataContext is CalculatorViewModel calculator)
{
var location = Element.MouseLocation;
calculator.CreateKnotNodeAt(location);
e.Handled = true;
}
}
}
public partial class EditorView : UserControl
{
public EditorView()
@@ -44,6 +64,7 @@ namespace Nodify.Calculator
static EditorView()
{
InputProcessor.Shared<NodifyEditor>.RegisterHandlerFactory(editor => new OperationsMenuHandler(editor));
InputProcessor.Shared<NodifyEditor>.RegisterHandlerFactory(editor => new KnotNodeHandler(editor));
}
private void OnDropNode(object sender, DragEventArgs e)

14
Examples/Nodify.Calculator/Executor.cs
View File

@@ -428,6 +428,20 @@ namespace Nodify.Calculator
OnLogMe?.Invoke($"Auth node resolved. Base URL: {_authBaseUrl}, Auth Type: {_authType}");
return;
}
// Knot/Reroute node: passthrough - forward input data to output
if (op is KnotOperationViewModel)
{
var knotInputCon = connections.Where(c => c.Input.Operation == op && c.Input.Shape != ConnectorShape.Triangle).FirstOrDefault();
if (knotInputCon != null)
{
var srcNodeId = knotInputCon.Output?.Operation?.NodeId;
if (srcNodeId != null && outputs.TryGetValue(srcNodeId, out var srcVal))
{
outputs[op.NodeId] = srcVal;
}
}
return;
}
if (op is SystemOperationViewModel debugSysOp && debugSysOp.SystemOperationType == SystemOperations.DEBUG)
{
// Find the data input connection (non-triangle)

15
Examples/Nodify.Calculator/KnotOperationViewModel.cs Normal file
View File

@@ -0,0 +1,15 @@
namespace Nodify.Calculator
{
public class KnotOperationViewModel : SystemOperationViewModel
{
public KnotOperationViewModel()
{
Title = "⬥";
SystemOperationType = SystemOperations.KNOT;
// Single flow-through input and output (will adapt shape when connected)
Input.Add(new ConnectorViewModel { Title = "", Shape = ConnectorShape.Circle, IsKnotConnector = true });
Output.Add(new ConnectorViewModel { Title = "", Shape = ConnectorShape.Circle, IsKnotConnector = true });
}
}
}

3
Examples/Nodify.Calculator/SystemOperationViewModel.cs
View File

@@ -22,7 +22,8 @@ namespace Nodify.Calculator
DEBUG,
NEW_OBJECT,
FOREACH,
ASSERT
ASSERT,
KNOT
}
public class SystemOperationViewModel : OperationViewModel