/// <summary>
/// Creates a single EndPointPainter.
///
/// Helper function.
/// </summary>
/// <param name="w">The endpoint to paint</param>
/// <returns>A new EndPointPainter</returns>
private EndPointPainter createEndpointPainter(Sketch.EndPoint endpoint)
{
// Create painter
EndPointPainter epp = new EndPointPainter(endpoint, sketchPanel.InkCanvas);
// Set painter type
if (!endpoint.IsConnected)
{
epp.Type = EndPointPainter.EndPointType.Unconnected;
}
else if (Domain.LogicDomain.IsGate(endpoint.ConnectedShape.Type))
{
epp.Type = EndPointPainter.EndPointType.ConnectedToSymbol;
}
else if (Domain.LogicDomain.IsText(endpoint.ConnectedShape.Type))
{
epp.Type = EndPointPainter.EndPointType.ConnectedToLabel;
}
else if (Domain.LogicDomain.IsWire(endpoint.ConnectedShape.Type))
{
epp.Type = EndPointPainter.EndPointType.ConnectedToWire;
}
else
{
epp.Type = EndPointPainter.EndPointType.UnknownConnection;
}
return(epp);
}
/// <summary>
/// Constructor
/// </summary>
public EndPoint(Sketch.EndPoint endpoint, bool isEnd)
{
m_Stroke = endpoint.ParentSub;
m_End = isEnd;
m_Pt = endpoint;
m_AttachedEndpoints = new List <EndPoint>();
}
/// <summary>
/// Look at a particular shape's orientation angle (relative to horizontal)
/// and correct it if necessary.
///
/// Note: Although the image recognizer gives an orientation angle,
/// we are not using it. Originally, we did use it, then calculated a new
/// orientation angle using wire slopes. The new orientation angle replaced
/// the original angle unless they were close to each other. However,
/// now we've commented that out and are using only the wire slopes.
///
/// Actually, we do use image recognizer orientation angle, but only
/// for NOT gates, since both sides of NOT gates have one wire.
/// </summary>
/// <param name="shape1">The shape to check.</param>
/// <param name="sketch">The sketch containing the shape.</param>
public override void OrientShape(Sketch.Shape shape, Sketch.Sketch sketch)
{
if (shape.Classification == LogicDomain.GATE_CLASS && shape.Type != LogicDomain.NOT)
{
// The gate's angle based on it's connected wires.
double connectionsAngle = 0;
double numConnectedWires = 0;
// Check the slope orientation of adjacent wires
foreach (Sketch.Shape connectedShape in shape.ConnectedShapes)
{
if (connectedShape.Type.Classification == LogicDomain.WIRE_CLASS)
{
Sketch.EndPoint endpoint = shape.ClosestEndpointFrom(connectedShape);
double slope = endpoint.Slope;
// negated since our y-axis is inverted.
connectionsAngle -= Math.Atan(Math.Abs(slope));
numConnectedWires++;
}
}
// Get the average angle
connectionsAngle = connectionsAngle / numConnectedWires;
//// Check if the two angles are close enough
//if (Math.Abs(orientationAngle - connectionsAngle) % Math.PI < CLOSE_ENOUGH ||
// Math.PI % Math.Abs(orientationAngle - connectionsAngle) < CLOSE_ENOUGH)
// shape.Orient = shape.Orient; // Don't change anything.
//else
// // Use the connections rather than the template rotation angle
// shape.Orient = connectionsAngle;
shape.Orientation = connectionsAngle;
}
}
/// <summary>
/// Determine a shape's orientation based on the angles of incoming and outgoing
/// wires. This method is highly reliable (numerous user studies have shown that
/// users don't draw wires coming into a gate at meaningless orientations), but
/// it is sometimes off by 180 degrees (by which I mean Pi, since we are working
/// in radians).
///
/// NOTE: Currently, this code is not used. HOWEVER, it is extremely reliable. Often
/// moreso than the orientation obtained from the image recognizer. The refiner should
/// be able to use this information.
/// </summary>
/// <param name="shape1">The shape to check.</param>
/// <param name="sketch">The sketch containing the shape.</param>
public override double OrientShape(Sketch.Shape shape, Sketch.Sketch sketch)
{
if (shape.Classification == LogicDomain.GATE_CLASS)
{
// The gate's angle based on its connected wires.
double connectionsAngle = 0;
double numConnectedWires = 0;
// Check the slope orientation of adjacent wires
foreach (Sketch.Shape connectedShape in shape.ConnectedShapes)
{
if (connectedShape.Type.Classification == LogicDomain.WIRE_CLASS)
{
Sketch.EndPoint endpoint = shape.ClosestEndpointFrom(connectedShape);
double slope = endpoint.Slope;
// negated since our y-axis is inverted (positive-y is down)
connectionsAngle -= Math.Atan(Math.Abs(slope));
numConnectedWires++;
}
}
// Get the average angle
connectionsAngle = connectionsAngle / numConnectedWires;
// Connections angle is currently in the range [-Pi, Pi], so add Pi
return(connectionsAngle + Math.PI);
}
return(0);
}
/// <summary>
/// Figures out everything a given logic gate should be
/// connected to, and connects them appropriately.
///
/// Assumption: Every wire-mesh has a unique name.
///
/// Note: this currently only deals with connections to wires.
/// Hence, it does not make any connections for notbubbles yet.
/// </summary>
/// <param name="gate">The gate to connect</param>
private void connectWiresTo(LogicGate gate)
{
// We keep track of what wire-meshes are inputs and outputs
// so we can do sanity checks before actually connecting
// them to the logic gate.
List <Shape> inputWires = new List <Shape>();
List <Shape> outputWires = new List <Shape>();
int maxOutputs = _domain.NumberOutputs(gate.Type).Max;
// Cycle through everything connected to the gate's associated
// shape and categorize their connection type accordingly
foreach (Sketch.Shape connectedShape in gate.Shape.ConnectedShapes)
{
// We'll take care of the not bubbles when they come up seprately
if (connectedShape.Type == LogicDomain.NOTBUBBLE)
{
continue;
}
// If it's not a wire or a not bubble, something is wrong
else if (!Domain.LogicDomain.IsWire(connectedShape.Type))
{
throw new Exception("Gate " + gate + " was connected to non-wire, non-notbubble shape " + connectedShape);
}
Sketch.EndPoint connectingEndpoint =
gate.Shape.ClosestEndpointFrom(connectedShape);
if (gate.ShouldBeInput(connectingEndpoint))
{
inputWires.Add(connectedShape);
}
else
{
outputWires.Add(connectedShape);
}
}
// Make the connections.
foreach (Shape wire in inputWires)
{
WireMesh inputWire = _wireMeshes[wire];
gate.ConnectInput(inputWire);
}
foreach (Shape wire in outputWires)
{
WireMesh outputWire = _wireMeshes[wire];
gate.ConnectOutput(outputWire);
}
gate.ConnectAllInputs();
gate.ConnectAllOutputs();
}
/// <summary>
/// Allows the user to connect shapes by dragging a connection
/// Stylus up connects the wire to the nearest target
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void InkCanvas_StylusUp(object sender, StylusEventArgs e)
{
if (debug)
{
Console.WriteLine("Endpoint stylus up recieved.");
}
// If no point has been clicked, return
if (clickedIndex == null)
{
return;
}
EndPointPainter clickedPoint;
endPointPainterMap.TryGetValue((int)clickedIndex, out clickedPoint);
// Check if there are strokes close-by
Sketch.EndPoint oldLocation = clickedPoint.EPoint;
System.Windows.Point oldLocationPoint = new System.Windows.Point(oldLocation.X, oldLocation.Y);
System.Windows.Point newLocation = e.GetPosition(sketchPanel.InkCanvas);
System.Windows.Ink.Stroke attachedStroke = sketchPanel.InkSketch.GetInkStrokeBySubstroke(clickedPoint.EPoint.ParentSub);
// Find the shape that the endpoint was dragged to
// You can't connect a wire to itself!
Shape closest = sketchPanel.Sketch.shapeAtPoint(newLocation.X, newLocation.Y, 10, clickedPoint.EPoint.ParentShape);
if (closest != null && attachedStroke != null) //&& !clickedPoint.EPoint.IsConnected)
{
clickedPoint.Clear();
clickedPoint.PointShape = null;
endPointPainterMap.Remove((int)clickedIndex);
// pass the endpoint moved event to the display manager
endPointMoved(oldLocation, newLocation, attachedStroke, closest);
}
else
{
clickedPoint.ResetMove();
}
clickedPoint.PaintMe();
// Reset the clickedIndex and the editing mode
sketchPanel.EnableDrawing();
clickedIndex = null;
}
/// <summary>
/// Connects not bubbles to gates and wires
/// </summary>
/// <param name="gate"></param>
private void connectNotBubble(LogicGate bubble)
{
LogicGate parentGate = null;
WireMesh wire = null;
// Get the components this not bubble is connected to
foreach (Shape connected in bubble.Shape.ConnectedShapes)
{
if (LogicDomain.IsGate(connected.Type) && parentGate == null)
{
parentGate = _logicGates[connected];
}
else if (LogicDomain.IsWire(connected.Type))
{
wire = _wireMeshes[connected];
}
}
// If this is not connected to a gate, connect it like a normal logic gate
if (parentGate == null)
{
connectWiresTo(bubble);
return;
}
// Is this bubble on the output or the input?
Sketch.EndPoint connectingEndpoint =
parentGate.Shape.ClosestEndpointFrom(bubble.Shape);
bool isInput = parentGate.ShouldBeInput(connectingEndpoint);
if (isInput)
{
wire.ConnectDependent(bubble);
parentGate.ConnectInput(bubble, 0);
}
else
{
wire.ConnectSource(bubble, 0);
parentGate.ConnectOutput(bubble, 0);
}
}