/// <summary>
/// Retrieve a connection between the two connectors.
/// Returns null if there is no connection between the connectors.
/// </summary>
public ConnectionViewModel FindConnection(ConnectorViewModel connector1, ConnectorViewModel connector2)
{
Trace.Assert(connector1.Type != connector2.Type);
//
// Figure out which one is the source connector and which one is the
// destination connector based on their connector types.
//
var sourceConnector = connector1.Type == ConnectorType.Output ? connector1 : connector2;
var destConnector = connector1.Type == ConnectorType.Output ? connector2 : connector1;
//
// Now we can just iterate attached connections of the source
// and see if it each one is attached to the destination connector.
//
foreach (var connection in sourceConnector.AttachedConnections)
{
if (connection.DestConnector == destConnector)
{
//
// Found a connection that is outgoing from the source connector
// and incoming to the destination connector.
//
return connection;
}
}
return null;
}
/// <summary>
/// Called to query the application for feedback while the user is dragging the connection.
/// </summary>
public void QueryConnnectionFeedback(ConnectorViewModel draggedOutConnector, ConnectorViewModel draggedOverConnector, out object feedbackIndicator, out bool connectionOk)
{
if (draggedOutConnector == draggedOverConnector)
{
//
// Can't connect to self!
// Provide feedback to indicate that this connection is not valid!
//
feedbackIndicator = new ConnectionBadIndicator();
connectionOk = false;
}
else
{
var sourceConnector = draggedOutConnector;
var destConnector = draggedOverConnector;
//
// Only allow connections from output connector to input connector (ie each
// connector must have a different type).
// Also only allocation from one node to another, never one node back to the same node.
//
connectionOk = sourceConnector.ParentNode != destConnector.ParentNode &&
sourceConnector.Type != destConnector.Type &&
destConnector.AttachedConnections.Count == 0;
if (connectionOk)
{
//
// Yay, this is a valid connection!
// Provide feedback to indicate that this connection is ok!
//
feedbackIndicator = new ConnectionOkIndicator();
}
else
{
//
// Connectors with the same connector type (eg input & input, or output & output)
// can't be connected.
// Only connectors with separate connector type (eg input & output).
// Provide feedback to indicate that this connection is not valid!
//
feedbackIndicator = new ConnectionBadIndicator();
}
}
}
/// <summary>
/// Called when the user has finished dragging out the new connection.
/// </summary>
public void ConnectionDragCompleted(ConnectionViewModel newConnection, ConnectorViewModel connectorDraggedOut, ConnectorViewModel connectorDraggedOver)
{
if (connectorDraggedOver == null)
{
//
// The connection was unsuccessful.
// Maybe the user dragged it out and dropped it in empty space.
//
this.Network.Connections.Remove(newConnection);
return;
}
//
// Only allow connections from output connector to input connector (ie each
// connector must have a different type).
// Also only allocation from one node to another, never one node back to the same node.
//
bool connectionOk = connectorDraggedOut.ParentNode != connectorDraggedOver.ParentNode &&
connectorDraggedOut.Type != connectorDraggedOver.Type
&& connectorDraggedOver.AttachedConnections.Count == 0;
if (!connectionOk)
{
//
// Connections between connectors that have the same type,
// eg input -> input or output -> output, are not allowed,
// Remove the connection.
//
this.Network.Connections.Remove(newConnection);
return;
}
//
// The user has dragged the connection on top of another valid connector.
//
//
// Remove any existing connection between the same two connectors.
//
var existingConnection = FindConnection(connectorDraggedOut, connectorDraggedOver);
if (existingConnection != null)
{
this.Network.Connections.Remove(existingConnection);
}
//
// Finalize the connection by attaching it to the connector
// that the user dragged the mouse over.
//
if (newConnection.DestConnector == null)
{
newConnection.DestConnector = connectorDraggedOver;
}
else
{
newConnection.SourceConnector = connectorDraggedOver;
}
if (newConnection.DestConnector != null && newConnection.SourceConnector != null)
{
LibnoiseNode sourceNode = newConnection.SourceConnector.ParentNode.Module;
LibnoiseNode destinationNode = newConnection.DestConnector.ParentNode.Module;
ModuleBase sourceModule = newConnection.SourceConnector.ParentNode.Module.LibnoiseModule;
ModuleBase destinationModule = newConnection.DestConnector.ParentNode.Module.LibnoiseModule;
// get destination type, connector name, assign to correct module
if(newConnection.DestConnector.Name.Equals("Input"))
{
destinationModule.Modules[0] = sourceModule;
destinationNode.Inputs[0] = sourceNode;
}
else if(newConnection.DestConnector.Name.Equals("Left"))
{
destinationModule.Modules[0] = sourceModule;
destinationNode.Inputs[0] = sourceNode;
}
else if(newConnection.DestConnector.Name.Equals("Right"))
{
destinationModule.Modules[1] = sourceModule;
destinationNode.Inputs[1] = sourceNode;
}
else if(newConnection.DestConnector.Name.Equals("Operator"))
{
destinationModule.Modules[2] = sourceModule;
destinationNode.Inputs[2] = sourceNode;
}
else if(newConnection.DestConnector.Name.Equals("Primary"))
{
destinationModule.Modules[0] = sourceModule;
destinationNode.Inputs[0] = sourceNode;
}
else if(newConnection.DestConnector.Name.Equals("Secondary"))
{
destinationModule.Modules[1] = sourceModule;
destinationNode.Inputs[1] = sourceNode;
}
else if(newConnection.DestConnector.Name.Equals("Controller"))
{
destinationModule.Modules[2] = sourceModule;
destinationNode.Inputs[2] = sourceNode;
}
else if(newConnection.DestConnector.Name.Equals("X"))
{
destinationModule.Modules[1] = sourceModule;
destinationNode.Inputs[1] = sourceNode;
}
else if(newConnection.DestConnector.Name.Equals("Y"))
{
destinationModule.Modules[2] = sourceModule;
destinationNode.Inputs[2] = sourceNode;
}
else if(newConnection.DestConnector.Name.Equals("Z"))
{
destinationModule.Modules[3] = sourceModule;
destinationNode.Inputs[3] = sourceNode;
}
}
}
/// <summary>
/// Called when the user has started to drag out a connector, thus creating a new connection.
/// </summary>
public ConnectionViewModel ConnectionDragStarted(ConnectorViewModel draggedOutConnector, Point curDragPoint)
{
//
// Create a new connection to add to the view-model.
//
var connection = new ConnectionViewModel();
if (draggedOutConnector.Type == ConnectorType.Output)
{
//
// The user is dragging out a source connector (an output) and will connect it to a destination connector (an input).
//
connection.SourceConnector = draggedOutConnector;
connection.DestConnectorHotspot = curDragPoint;
}
else
{
//
// The user is dragging out a destination connector (an input) and will connect it to a source connector (an output).
//
connection.DestConnector = draggedOutConnector;
connection.SourceConnectorHotspot = curDragPoint;
}
//
// Add the new connection to the view-model.
//
this.Network.Connections.Add(connection);
return connection;
}
/// <summary>
/// Recursive Solve single node calculation
/// </summary>
/// <param name="node"></param>
/// <returns>Is success solved</returns>
private bool UnitSolve(AbstractNodeViewModel node,ConnectorViewModel invokerConnector = null)
{
{
bool isSuccessed = true;
if (node.InputConnectors.Count != 0)
{
foreach (var connector in node.InputConnectors)
{
// Exist input connectors, so check whether this attached to any node
if (connector.AttachedConnections.Count != 0)
{
// Attached input
// Attached num check
if (connector.AttachedConnections.Count > 1)
{
// Usually not reached point
throw new NotImplementedException("now input connection must has single attached.");
}
//So call the self recursively in terms of get this node's destination of the node
foreach (var connection in connector.AttachedConnections)
{
AbstractNodeViewModel outputNode = null;
if (connection.DestConnector.Type == ConnectorType.Output)
outputNode = connection.DestConnector.ParentNode;
else
outputNode = connection.SourceConnector.ParentNode;
isSuccessed = UnitSolve(outputNode, connector);
}
}
}
}
/// If could not solved of just before node, cancel solve
//if (!isSuccessed) return false;
}
/// Execute Calculation
node.Calculate();
/// Check node is be able to solve of static
//if(node.SolverType != NodeCalculationType.Dynamic)
//{
// return false;
//}
/// Propagate data to invoker
foreach(var connector in node.OutputConnectors)
{
foreach(var connection in connector.AttachedConnections)
{
ConnectorViewModel outputConnector = null;
ConnectorViewModel inputConnector = null;
if (connection.DestConnector.Type == ConnectorType.Output)
{
outputConnector = connection.DestConnector;
inputConnector = connection.SourceConnector;
}
else
{
outputConnector = connection.SourceConnector;
inputConnector = connection.DestConnector;
}
if (inputConnector == invokerConnector && connection.DestConnector.DataType == invokerConnector.DataType)
{
invokerConnector.NoRaiseEntity = outputConnector.Entity;
}
}
}
return true;
}
/// <summary>
///
/// </summary>
public CreateConnectionUndoCommand(FlowGraphControlViewModel fgvm_, ConnectionViewModel connectionVM_)
{
m_FlowGraphVM = fgvm_;
//m_ConnectionVM = connectionVM_.Copy();
m_DestConnector = connectionVM_.DestConnector;
m_DestConnectorHotspot = connectionVM_.DestConnectorHotspot;
m_Points = connectionVM_.Points;
m_SourceConnector = connectionVM_.SourceConnector;
m_SourceConnectorHotspot = connectionVM_.SourceConnectorHotspot;
}
/// <summary>
/// Called to query the application for feedback while the user is dragging the connection.
/// </summary>
public void QueryConnnectionFeedback(ConnectorViewModel draggedOutConnector, ConnectorViewModel draggedOverConnector, out object feedbackIndicator, out bool connectionOk)
{
if (draggedOutConnector == draggedOverConnector)
{
//
// Can't connect to self!
// Provide feedback to indicate that this connection is not valid!
//
feedbackIndicator = new ConnectionBadIndicator("Can't connect to self");
connectionOk = false;
}
else
{
string message = string.Empty;
var sourceConnector = draggedOutConnector;
var destConnector = draggedOverConnector;
//
// Only allow connections from output connector to input connector (ie each
// connector must have a different type).
// Also only allocation from one node to another, never one node back to the same node.
//
connectionOk = IsValidConnection(sourceConnector, draggedOverConnector, ref message);
if (connectionOk)
{
feedbackIndicator = new ConnectionOkIndicator();
}
else
{
//
// Connectors with the same connector type (eg input & input, or output & output)
// can't be connected.
// Only connectors with separate connector type (eg input & output).
// Provide feedback to indicate that this connection is not valid!
//
feedbackIndicator = new ConnectionBadIndicator(message);
}
}
}
/// <summary>
/// Called when the user has finished dragging out the new connection.
/// </summary>
public void ConnectionDragCompleted(
ConnectionViewModel newConnection,
ConnectorViewModel connectorDraggedOut,
ConnectorViewModel connectorDraggedOver)
{
if (connectorDraggedOver == null)
{
//
// The connection was unsuccessful.
// Maybe the user dragged it out and dropped it in empty space.
//
this.Network.Connections.Remove(newConnection);
// m_connectorDraggedOut = connectorDraggedOut;
// m_ConnectorDraggedOver = connectorDraggedOver;
//
// //Open contextMenu
// if (ContextMenuOpened != null)
// {
// ContextMenuOpened(this, null);
// }
return;
}
//
// Only allow connections from output connector to input connector (ie each
// connector must have a different type).
// Also only allocation from one node to another, never one node back to the same node.
//
string dummy = string.Empty;
bool connectionOk = IsValidConnection(connectorDraggedOut, connectorDraggedOver, ref dummy);
if (!connectionOk)
{
//
// Connections between connectors that have the same type,
// eg input -> input or output -> output, are not allowed,
// Remove the connection.
//
this.Network.Connections.Remove(newConnection);
return;
}
//
// The user has dragged the connection on top of another valid connector.
//
//
// Remove any existing connection between the same two connectors.
//
var existingConnection = FindConnection(connectorDraggedOut, connectorDraggedOver);
if (existingConnection != null)
{
this.Network.Connections.Remove(existingConnection);
}
// Finalize the connection by reordering the source & destination
// if necessary
if (newConnection.DestConnector == null)
{
if (connectorDraggedOver.SourceSlot.ConnectionType == SlotType.VarInOut)
{
if (newConnection.SourceConnector.SourceSlot.ConnectionType == SlotType.VarIn)
{
ConnectorViewModel dest = newConnection.SourceConnector;
newConnection.SourceConnector = connectorDraggedOver;
newConnection.DestConnector = dest;
}
else
{
newConnection.DestConnector = connectorDraggedOver;
}
}
else if (connectorDraggedOver.SourceSlot.ConnectionType == SlotType.NodeIn
|| connectorDraggedOver.SourceSlot.ConnectionType == SlotType.VarIn)
{
newConnection.DestConnector = connectorDraggedOver;
}
else
{
ConnectorViewModel dest = newConnection.SourceConnector;
newConnection.SourceConnector = connectorDraggedOver;
newConnection.DestConnector = dest;
}
}
else // connector source is null
{
if (connectorDraggedOver.SourceSlot.ConnectionType == SlotType.VarInOut)
{
if (newConnection.DestConnector.SourceSlot.ConnectionType == SlotType.VarIn)
{
newConnection.SourceConnector = connectorDraggedOver;
}
else
{
ConnectorViewModel dest = newConnection.DestConnector;
newConnection.DestConnector = connectorDraggedOver;
newConnection.SourceConnector = dest;
}
}
else if (connectorDraggedOver.SourceSlot.ConnectionType == SlotType.NodeIn
|| connectorDraggedOver.SourceSlot.ConnectionType == SlotType.VarIn)
{
newConnection.SourceConnector = connectorDraggedOver;
}
else
{
ConnectorViewModel dest = newConnection.DestConnector;
newConnection.SourceConnector = connectorDraggedOver;
newConnection.DestConnector = dest;
}
}
//special case variable from 2 SequenceNode directly connected
if (newConnection.SourceConnector.SourceSlot is NodeSlotVar
&& newConnection.DestConnector.SourceSlot is NodeSlotVar)
{
ConnectorViewModel src = newConnection.SourceConnector;
newConnection.SourceConnector = newConnection.DestConnector;
newConnection.DestConnector = src;
}
m_UndoManager.Add(new CreateConnectionUndoCommand(this, newConnection));
}
/// <summary>
/// Check if the 2 slot can be connected
/// </summary>
/// <param name="a"></param>
/// <param name="b"></param>
/// <param name="message_"></param>
/// <returns></returns>
private bool IsValidConnection(ConnectorViewModel a, ConnectorViewModel b, ref string message_)
{
bool connectionOk = a.ParentNode != b.ParentNode &&
a.Type != b.Type;
if (connectionOk == true)
{
//case Variable Input Output
if (a.Type == ConnectorType.VariableInputOutput)
{
connectionOk = b.Type == ConnectorType.VariableInput || b.Type == ConnectorType.VariableOutput;
}
else if (b.Type == ConnectorType.VariableInputOutput)
{
connectionOk = a.Type == ConnectorType.VariableInput || a.Type == ConnectorType.VariableOutput;
}
//case node/variable
if (a.Type == ConnectorType.Input
|| a.Type == ConnectorType.Output)
{
connectionOk = b.Type == ConnectorType.Input || b.Type == ConnectorType.Output;
}
else if (b.Type == ConnectorType.Input
|| b.Type == ConnectorType.Output)
{
connectionOk = a.Type == ConnectorType.Input || a.Type == ConnectorType.Output;
}
//TODO : test connection object type
//case Variable Output/Variable
if (a.Type == ConnectorType.VariableOutput)
{
return b.Type == ConnectorType.VariableInputOutput || b.Type == ConnectorType.VariableInput;
}
else if (b.Type == ConnectorType.VariableOutput)
{
return a.Type == ConnectorType.VariableInputOutput || a.Type == ConnectorType.VariableInput;
}
//case Variable Input/Variable
if (a.Type == ConnectorType.VariableInput/* || a.Type == ConnectorType.VariableOutput*/)
{
//a.AttachedConnections.Count == 1 because the destination connector is already connected
connectionOk = b.Type == ConnectorType.VariableInputOutput && a.AttachedConnections.Count == 1;
if (connectionOk == false)
{
message_ = "You can connect only one node into this slot";
}
}
else if (b.Type == ConnectorType.VariableInput/* || b.Type == ConnectorType.VariableOutput*/)
{
connectionOk = a.Type == ConnectorType.VariableInputOutput && b.AttachedConnections.Count == 0;
if (connectionOk == false)
{
message_ = "You can connect only one node into this slot";
}
}
}
// TODO : check if obsolete with direct connection ??
// check for variable node connection
if (connectionOk == true
&& (
(a.Type == ConnectorType.VariableInput
|| a.Type == ConnectorType.VariableOutput
|| a.Type == ConnectorType.VariableInputOutput)
&&
(b.Type == ConnectorType.VariableInput
|| b.Type == ConnectorType.VariableOutput
|| b.Type == ConnectorType.VariableInputOutput)
))
{
connectionOk = VariableTypeInspector.CheckCompatibilityType(a.SourceSlot.VariableType, b.SourceSlot.VariableType);
if (connectionOk == false)
{
message_ = "You can not connect because the type is different";
}
}
return connectionOk;
}
/// <summary>
/// Called when the user has finished dragging out the new connection.
/// </summary>
public void ConnectionDragCompleted(ConnectionViewModel newConnection, ConnectorViewModel connectorDraggedOut, ConnectorViewModel connectorDraggedOver)
{
if (connectorDraggedOver == null)
{
//
// The connection was unsuccessful.
// Maybe the user dragged it out and dropped it in empty space.
//
this.Network.Connections.Remove(newConnection);
return;
}
//
// The user has dragged the connection on top of another valid connector.
//
var existingConnections = connectorDraggedOver.AttachedConnections;
if (existingConnections != null)
{
//
// There is already a connection attached to the connector that was dragged over.
// Remove the existing connection from the view-model.
//
this.Network.Connections.RemoveRange(existingConnections as IEnumerable);
}
//
// Finalize the connection by attaching it to the connector
// that the user dropped the connection on.
//
newConnection.DestConnector = connectorDraggedOver;
}
/// <summary>
/// Called when the user has started to drag out a connector, thus creating a new connection.
/// </summary>
public ConnectionViewModel ConnectionDragStarted(ConnectorViewModel draggedOutConnector, Point curDragPoint)
{
if (draggedOutConnector.AttachedConnections.Any())
{
//
// There is an existing connection attached to the connector that has been dragged out.
// Remove the existing connection from the view-model.
//
this.Network.Connections.RemoveRange(draggedOutConnector.AttachedConnections as IEnumerable);
}
//
// Create a new connection to add to the view-model.
//
var connection = new ConnectionViewModel();
//
// Link the source connector to the connector that was dragged out.
//
connection.SourceConnector = draggedOutConnector;
//
// Set the position of destination connector to the current position of the mouse cursor.
//
connection.DestConnectorHotspot = curDragPoint;
//
// Add the new connection to the view-model.
//
this.Network.Connections.Add(connection);
return connection;
}
