// Helpers
private IEnumerable <KeyValuePair <int, Point> > CalculateInputPortLocations(NodeEntry entry)
{
for (int i = 0; i < entry.Node.InputCount; i++)
{
yield return(new KeyValuePair <int, Point>(i + 1, CalculateInputPortLocation(entry, i)));
}
}
private void DrawBulb(Graphics g, Rectangle backgroundRect, NodeEntry entry, bool isOn)
{
var brush = isOn ? this._onBrush : this._offBrush;
g.FillEllipse(brush, backgroundRect);
g.DrawEllipse(this._outlinePen, backgroundRect);
}
private void DrawGateName(Graphics g, Rectangle backgroundRect, NodeEntry entry)
{
if (entry.Node.GateName != null)
{
var stringSize = g.MeasureString(entry.Node.GateName, this._gateNameFont);
var center = CalculateCenter(entry.Rect);
g.DrawString(entry.Node.GateName, this._gateNameFont, Brushes.Black, new Point(center.X - (int)(stringSize.Width / 2), center.Y - (int)(stringSize.Height / 2)));
}
}
private void CircuitPanel_MouseUp(object sender, MouseEventArgs e)
{
if (this._interacted != null && this._interacted.Node is InteractiveNode intN && this._isPressed)
{
intN.Release();
}
this._interacted = null;
this._isPressed = false;
this._startedDragging = false;
this._didDragging = false;
}
private void DrawSWITCH(Graphics g, Rectangle backgroundRect, NodeEntry entry, bool isOn)
{
g.FillRectangle(this._iconBackgroundBrush, backgroundRect);
g.DrawRectangle(this._outlinePen, backgroundRect);
var interactiveRect = this.CalculateInteractiveZone(backgroundRect);
var brush = isOn ? this._onBrush : this._offBrush;
g.FillRectangle(brush, interactiveRect);
g.DrawRectangle(this._outlinePen, interactiveRect);
}
private void DrawXOR(Graphics g, Rectangle backgroundRect, NodeEntry entry)
{
int cY = backgroundRect.Y + (backgroundRect.Height / 2);
this.DrawOR(g, new Rectangle(backgroundRect.X + XorLeftOffset, backgroundRect.Y, backgroundRect.Width - XorLeftOffset, backgroundRect.Height), entry);
g.DrawCurve(this._outlinePen, new Point[]
{
new Point(backgroundRect.Left, backgroundRect.Top),
new Point(backgroundRect.Left + OrCurvatureOffset, cY),
new Point(backgroundRect.Left, backgroundRect.Bottom),
}, OrCurvatureTension);
}
private Point CalculateInputPortLocation(NodeEntry entry, int portIndex)
{
var partSize =
entry.InputOnly
? (entry.Rect.Width - (this._portsMargin * 2)) / entry.Node.InputCount
: (entry.Rect.Height - (this._portsMargin * 2)) / entry.Node.InputCount;
var partHalf = partSize / 2;
return
(entry.InputOnly
? new Point(entry.Rect.X + (portIndex * partSize) + partHalf + this._portsMargin, entry.Rect.Bottom - this._portRadius) // Input port on bottom
: new Point(entry.Rect.X + this._portRadius, entry.Rect.Y + (portIndex * partSize) + partHalf + this._portsMargin)); // Input port on left
}
private void AddNode(Node node)
{
var nodeEntry = new NodeEntry(node, new Point(150, 150), new Size(100, 100));
nodeEntry.Size =
nodeEntry.InputOnly
? new Size(100, 100 + this._portRadius * 2)
: new Size(100 + this._portRadius * 2, 100);
this._nodes.Add(nodeEntry);
this._circuit.AddNode(node);
this.CircuitPanel.Refresh();
}
private void DrawNOT(Graphics g, Rectangle backgroundRect, NodeEntry entry)
{
var cY = backgroundRect.Y + (backgroundRect.Height / 2);
GraphicsPath path = new GraphicsPath();
path.AddLine(new Point(backgroundRect.Left, backgroundRect.Top), new Point(backgroundRect.Left, backgroundRect.Bottom)); // Rear Line
path.AddLine(new Point(backgroundRect.Left, backgroundRect.Bottom), new Point(backgroundRect.Right - NotTipRadius * 2, cY));
path.CloseFigure();
path.AddEllipse(new Rectangle(new Point(backgroundRect.Right - NotTipRadius * 2, cY - NotTipRadius), new Size(NotTipRadius * 2, NotTipRadius * 2)));
g.FillPath(this._iconBackgroundBrush, path);
g.DrawPath(this._outlinePen, path);
}
private void DrawAND(Graphics g, Rectangle backgroundRect, NodeEntry entry)
{
var hX = backgroundRect.Width / 2;
var cX = backgroundRect.X + hX;
GraphicsPath path = new GraphicsPath();
path.AddArc(cX, backgroundRect.Top, hX, backgroundRect.Height, 270, 180);
path.AddLine(new Point(backgroundRect.Left, backgroundRect.Bottom), new Point(cX, backgroundRect.Bottom)); // Bottom
path.AddLine(new Point(backgroundRect.Left, backgroundRect.Bottom), new Point(backgroundRect.Left, backgroundRect.Top)); // Left
path.AddLine(new Point(cX, backgroundRect.Top), new Point(backgroundRect.Left, backgroundRect.Top)); // Top
path.CloseFigure();
g.FillPath(this._iconBackgroundBrush, path);
g.DrawPath(this._outlinePen, path);
}
private bool IsNodeInputPortClicked(NodeEntry entry, Point clickLocation, out int portNumber)
{
for (int i = 0; i < entry.Node.InputCount; i++)
{
var pos = this.CalculateInputPortLocation(this._interacted, i);
if (DistanceBetween(pos, clickLocation) < this._portRadius + this._outlinePen.Width)
{
portNumber = i + 1;
return(true);
}
}
portNumber = -1;
return(false);
}
private void DeleteToolStripMenuItem1_Click(object sender, EventArgs e) // Node
{
if (this._selected != null && this._selectedPort == null)
{
this._circuit.RemoveNode(this._selected.Node);
// Delete all wire
var deletedWires = this._wires.Where(w => w.Wire.InputNode == this._selected.Node || w.Wire.OutputNode == this._selected.Node).ToArray();
foreach (var wire in deletedWires)
{
this._wires.Remove(wire);
}
this._nodes.Remove(this._selected);
this._selected = null;
this.CircuitPanel.Refresh();
}
}
private void CircuitPanel_MouseDown(object sender, MouseEventArgs e)
{
this._interacted = this.GetNodeAtLocation(e.Location);
if (this._interacted != null && e.Button == MouseButtons.Left)
{
this._nodeLocationAtDragStart = this._interacted.Location;
if (this._interacted.IsInteractive && this.CalculateInteractiveZone(this.CalculateIconRect(this._interacted.Rect, this._interacted.InputOnly)).Contains(e.Location))
{
this._isPressed = true;
((InteractiveNode)this._interacted.Node).Press();
}
else
{
this._dragStart = e.Location;
this._startedDragging = true;
}
}
}
private void DrawOR(Graphics g, Rectangle backgroundRect, NodeEntry entry)
{
int cX = backgroundRect.X + (backgroundRect.Width / 2);
int cY = backgroundRect.Y + (backgroundRect.Height / 2);
// Draw enough curves so that it can fully connect with the rectangle
GraphicsPath path = new GraphicsPath();
path.AddCurve(new Point[] // Left Curve
{
new Point(backgroundRect.Left, backgroundRect.Top),
new Point(backgroundRect.Left + OrCurvatureOffset, cY),
new Point(backgroundRect.Left, backgroundRect.Bottom),
}, OrCurvatureTension);
path.AddLine(new Point(backgroundRect.Left, backgroundRect.Bottom), new Point(cX, backgroundRect.Bottom)); // Bottom Line
path.AddCurve(new Point[] // Right bottom curve
{
new Point(cX, backgroundRect.Bottom),
new Point(cX + OrCurvatureOffset, backgroundRect.Bottom - (OrCurvatureOffset / 2)),
new Point(backgroundRect.Right - OrCurvatureOffset, cY + (OrCurvatureOffset / 2)),
new Point(backgroundRect.Right, cY),
}, OrCurvatureTension);
path.AddCurve(new Point[] // Right Top curve
{
new Point(backgroundRect.Right, cY),
new Point(backgroundRect.Right - OrCurvatureOffset, cY - (OrCurvatureOffset / 2)),
new Point(cX + OrCurvatureOffset, backgroundRect.Top + (OrCurvatureOffset / 2)),
new Point(cX, backgroundRect.Top),
}, OrCurvatureTension);
//path.AddLine(new Point(centerX, centerY - halfSide), new Point(centerX - halfSide, centerY - halfSide)); // Top
path.CloseFigure();
g.FillPath(this._iconBackgroundBrush, path);
g.DrawPath(this._outlinePen, path);
}
private void CircuitPanel_MouseClick(object sender, MouseEventArgs e)
{
if (this._selectedPort != null && this._selected == null)
{
throw new Exception("Unexpected selection error");
}
if (this._didDragging)
{
return;
}
if (e.Button == MouseButtons.Left)
{
if (this._interacted != null) // _dragging should be auto-filled in the MouseDown listener, if it's null => the user hasn't clicked on a node
{
if (this.IsNodeInputPortClicked(this._interacted, e.Location, out int portNumber)) // Check if we clicked on an input port
{
// There is already have a selected output port and not on the same object
if (this._selectedPort != null && this._selectedPort == 0 && this._selected != this._interacted)
{
this.AddWire(new Wire(this._selected.Node, this._interacted.Node, portNumber));
// Clear port selection
this._selected = null;
this._selectedPort = null;
}
else // No port selected OR there was an input port selected OR we tried to connect a gate with itself => replace the selection
{
// Mark port selection
this._selected = this._interacted;
this._selectedPort = portNumber; // No current selected port => select the clicked one
}
}
else if (IsNodeOutputPortClicked(this._interacted, e.Location)) // No input port was selected => Check is the output port was selected
{
// There was an input port selected and not on the same object => connect
if (this._selectedPort != null && this._selectedPort > 0 && this._selected != this._interacted)
{
this.AddWire(new Wire(this._interacted.Node, this._selected.Node, this._selectedPort.Value));
// Clear port selection
this._selected = null;
this._selectedPort = null;
}
else // There was no port selected OR there was an input port selected OR we clicked on an input port but on the same object => replace the selection
{
this._selected = this._interacted;
this._selectedPort = 0;
}
}
else // Not clicked on output port either => simply clicked on the object somewhere
{
}
}
else // Clicked outside of a node
{
this._selected = null;
this._selectedPort = null;
}
}
else if (e.Button == MouseButtons.Right)
{
WireEntry wireEntry;
if (this._interacted != null) // Clicked on node
{
this._selected = _interacted;
this._selectedPort = null;
this.nodeRightClickMenu.Show(this.CircuitPanel.PointToScreen(e.Location));
}
else if ((wireEntry = GetWireAt(e.Location)) != null) // Clicked near wire
{
this._selectedWire = wireEntry;
wireRightClickMenu.Show(this.CircuitPanel.PointToScreen(e.Location));
}
else
{
this._selected = null;
this._selectedWire = null;
this._selectedPort = null;
}
}
// Stop Dragging
this._interacted = null;
this.CircuitPanel.Refresh();
}
private Point CalculateOutputPortLocation(NodeEntry entry)
{
var heightHalf = entry.Size.Height / 2;
return(new Point(entry.Location.X + entry.Size.Width - this._portRadius, entry.Location.Y + heightHalf));
}
private bool IsNodeOutputPortClicked(NodeEntry entry, Point clickLocation)
{
Point outputPos = this.CalculateOutputPortLocation(entry);
return(DistanceBetween(outputPos, clickLocation) < this._portRadius + this._outlinePen.Width);
}