public PortConstraintBendHandle(bool sourceEnd, IBend bend, IHandle originalImplementation, WeakDictionaryMapper <IEdge, PortConstraint> portConstraints) : base(originalImplementation)
{
this.sourceEnd = sourceEnd;
this.bend = bend;
this.portConstraints = portConstraints;
}
private bool FindAnchorTangent(IEdge edge, out double upX, out double upY, out double cx, out double cy)
{
IEdgeStyle style = edge.Style;
if (style != null)
{
IEdgeStyleRenderer renderer = style.Renderer;
IPathGeometry geometry = renderer.GetPathGeometry(edge, style);
if (geometry != null)
{
var t = geometry.GetTangent(ratio);
if (t != null)
{
var tangent = t.Value;
upX = -tangent.Vector.Y;
upY = tangent.Vector.X;
cx = tangent.Point.X;
cy = tangent.Point.Y;
return(true);
}
}
}
double l = 0;
var spl = edge.SourcePort.GetLocation();
double x1 = spl.X;
double y1 = spl.Y;
var tpl = edge.TargetPort.GetLocation();
double x2 = tpl.X;
double y2 = tpl.Y;
{
double lx = x1;
double ly = y1;
var bends = edge.Bends;
for (int i = 0; i < bends.Count; i++)
{
IBend bend = bends[i];
double bx = bend.Location.X;
double by = bend.Location.Y;
double dx = bx - lx;
double dy = by - ly;
l += Math.Sqrt(dx * dx + dy * dy);
lx = bx;
ly = by;
}
{
double dx = x2 - lx;
double dy = y2 - ly;
l += Math.Sqrt(dx * dx + dy * dy);
}
}
double tl = ratio * l;
if (l == 0)
{
// no length, no path, no label
upX = 0;
upY = -1;
cx = x1;
cy = y1;
return(false);
}
l = 0;
{
double lx = x1;
double ly = y1;
var bends = edge.Bends;
for (int i = 0; i < bends.Count; i++)
{
IBend bend = bends[i];
double bx = bend.Location.X;
double by = bend.Location.Y;
double dx = bx - lx;
double dy = by - ly;
double sl = Math.Sqrt(dx * dx + dy * dy);
if (sl > 0 && l + sl >= tl)
{
tl -= l;
cx = lx + tl * dx / sl;
cy = ly + tl * dy / sl;
upX = -dy;
upY = dx;
return(true);
}
l += sl;
lx = bx;
ly = by;
}
{
double dx = x2 - lx;
double dy = y2 - ly;
double sl = Math.Sqrt(dx * dx + dy * dy);
if (sl > 0)
{
tl -= l;
cx = lx + tl * dx / sl;
cy = ly + tl * dy / sl;
upX = -dy;
upY = dx;
return(true);
}
else
{
upX = 0;
upY = -1;
cx = x1;
cy = y1;
return(false);
}
}
}
}
/// <summary>
/// Creates a sample graph and introduces all important graph elements present in
/// yFiles WPF. Additionally, this method now overrides the label placement for some specific labels.
/// </summary>
private void PopulateGraph()
{
#region Sample Graph creation
// Creates two nodes with the default node size
// The location is specified for the _center_
INode node1 = Graph.CreateNode(new PointD(50, 50));
INode node2 = Graph.CreateNode(new PointD(150, 50));
// Creates a third node with a different size of 80x40
// In this case, the location of (360,280) describes the _upper left_
// corner of the node bounds
INode node3 = Graph.CreateNode(new RectD(260, 180, 80, 40));
// Creates some edges between the nodes
IEdge edge1 = Graph.CreateEdge(node1, node2);
IEdge edge2 = Graph.CreateEdge(node2, node3);
// Creates the first bend for edge2 at (400, 50)
IBend bend1 = Graph.AddBend(edge2, new PointD(300, 50));
// Actually, edges connect "ports", not nodes directly.
// If necessary, you can manually create ports at nodes
// and let the edges connect to these.
// Creates a port in the center of the node layout
IPort port1AtNode1 = Graph.AddPort(node1, FreeNodePortLocationModel.NodeCenterAnchored);
// Creates a port at the middle of the left border
// Note to use absolute locations when placing ports using PointD.
IPort port1AtNode3 = Graph.AddPort(node3, new PointD(node3.Layout.X, node3.Layout.GetCenter().Y));
// Creates an edge that connects these specific ports
IEdge edgeAtPorts = Graph.CreateEdge(port1AtNode1, port1AtNode3);
// Adds labels to several graph elements
Graph.AddLabel(node1, "Node 1");
Graph.AddLabel(node2, "Node 2");
Graph.AddLabel(node3, "Node 3");
Graph.AddLabel(edgeAtPorts, "Edge at Ports");
// Add some more elements to have a larger graph to edit
var n4 = Graph.CreateNode(new PointD(50, -50));
Graph.AddLabel(n4, "Node 4");
var n5 = Graph.CreateNode(new PointD(50, -150));
Graph.AddLabel(n5, "Node 5");
var n6 = Graph.CreateNode(new PointD(-50, -50));
Graph.AddLabel(n6, "Node 6");
var n7 = Graph.CreateNode(new PointD(-50, -150));
Graph.AddLabel(n7, "Node 7");
var n8 = Graph.CreateNode(new PointD(150, -50));
Graph.AddLabel(n8, "Node 8");
Graph.CreateEdge(n4, node1);
Graph.CreateEdge(n5, n4);
Graph.CreateEdge(n7, n6);
var e6_1 = Graph.CreateEdge(n6, node1);
Graph.AddBend(e6_1, new PointD(-50, 50), 0);
// Creates a group node programmatically which groups the child nodes n4, n5, and n8
var groupNode = CreateGroupNodes(n4, n5, n8);
// creates an edge between the group node and node 2
var eg_2 = Graph.CreateEdge(groupNode, node2);
Graph.AddBend(eg_2, new PointD(100, 0), 0);
Graph.AddBend(eg_2, new PointD(150, 0), 1);
#endregion
}
/// <summary>
/// Creates a sample graph and introduces all important graph elements present in
/// yFiles.NET. Additionally, this method now overrides the label placement for some specific labels.
/// </summary>
private void PopulateGraph()
{
#region Sample Graph creation
//////////// Sample node creation ///////////////////
// Creates two nodes with the default node size
// The location is specified for the _center_
INode node1 = Graph.CreateNode(new PointD(50, 50));
INode node2 = Graph.CreateNode(new PointD(150, 50));
// Creates a third node with a different size of 80x40
// In this case, the location of (360,380) describes the _upper left_
// corner of the node bounds
INode node3 = Graph.CreateNode(new RectD(360, 380, 80, 40));
/////////////////////////////////////////////////////
//////////// Sample edge creation ///////////////////
// Creates some edges between the nodes
IEdge edge1 = Graph.CreateEdge(node1, node2);
IEdge edge2 = Graph.CreateEdge(node2, node3);
/////////////////////////////////////////////////////
//////////// Using Bends ////////////////////////////
// Creates the first bend for edge2 at (400, 50)
IBend bend1 = Graph.AddBend(edge2, new PointD(400, 50));
/////////////////////////////////////////////////////
//////////// Using Ports ////////////////////////////
// Actually, edges connect "ports", not nodes directly.
// If necessary, you can manually create ports at nodes
// and let the edges connect to these.
// Creates a port in the center of the node layout
IPort port1AtNode1 = Graph.AddPort(node1, FreeNodePortLocationModel.NodeCenterAnchored);
// Creates a port at the middle of the left border
// Note to use absolute locations when placing ports using PointD.
IPort port1AtNode3 = Graph.AddPort(node3, new PointD(node3.Layout.X, node3.Layout.GetCenter().Y));
// Creates an edge that connects these specific ports
IEdge edgeAtPorts = Graph.CreateEdge(port1AtNode1, port1AtNode3);
/////////////////////////////////////////////////////
//////////// Sample label creation ///////////////////
// Adds labels to several graph elements
Graph.AddLabel(node1, "N 1");
Graph.AddLabel(node2, "N 2");
Graph.AddLabel(node3, "N 3");
var edgeLabel = Graph.AddLabel(edgeAtPorts, "Edge at Ports");
/////////////////////////////////////////////////////
/////////////////////////////////////////////////////
#endregion
///////////////// New in this Sample /////////////////
// Override default styles
// Changes the style for the second node
// Creates a new node style, this time a ShapeNodeStyle:
ShapeNodeStyle sns = new ShapeNodeStyle {
Shape = ShapeNodeShape.Ellipse, Pen = Pens.Black, Brush = Brushes.OrangeRed
};
// Sets the node's style property to the new style through its owning graph,
// since you can't set the style property of an INode directly
// (you'll set most other graph object properties this way as well)
Graph.SetStyle(node2, sns);
// Creates a different style for the label with black text and a red border
// and intransparent white background
DefaultLabelStyle sls = new DefaultLabelStyle {
Font = new Font("Arial Black", 12), TextBrush = Brushes.Black
};
sls.BackgroundPen = Pens.Red;
sls.BackgroundBrush = Brushes.White;
// And sets the style for the edge label, again through its owning graph.
Graph.SetStyle(edgeLabel, sls);
// Override the style for the "Edge at Ports" edge:
// Uses a dashed red Pen with thickness 2.
Pen defaultPen = new Pen(Brushes.Red, 2)
{
DashStyle = DashStyle.Dash
};
// Creates an edge style that will apply the new default pen
// to the entire line using PolyLineEdgeStyle,
// which draws a polyline determined by the edge's control points (bends)
var edgeStyle = new PolylineEdgeStyle {
Pen = defaultPen
};
// Sets the source and target arrows on the edge style instance
// Note that IEdgeStyle itself does not have these properties
// also note: by default the arrows have a default brush and pen
edgeStyle.SourceArrow = Arrows.Circle;
// set color and size to match the thick red line
edgeStyle.TargetArrow = new Arrow(Color.Red)
{
Type = ArrowType.Short, Scale = 2
};
// Sets the style for the "Edge at Ports" edge, again through its owning graph.
Graph.SetStyle(edge2, edgeStyle);
//////////////////////////////////////////////////////
}
public BendCreationHandler(IBend bend, IGraph graph, BezierCreateBendInputMode bendInputMode)
{
this.bend = bend;
this.graph = graph;
this.bendInputMode = bendInputMode;
}
/// <summary>
/// Creates a sample graph and introduces all important graph elements present in
/// yFiles.NET.
/// </summary>
private void PopulateGraph()
{
#region Sample Graph creation
///////////////// New in this Sample /////////////////
// Creates a node outside the initial content rectangle
INode node4 = Graph.CreateNode(new PointD(-100, -100));
ILabel outsiderLabel = Graph.AddLabel(node4, "Outside Initial Viewport");
//////////////////////////////////////////////////////
//////////// Sample node creation ///////////////////
// Creates two nodes with the default node size
// The location is specified for the _center_
INode node1 = Graph.CreateNode(new PointD(50, 50));
INode node2 = Graph.CreateNode(new PointD(150, 50));
// Creates a third node with a different size of 80x40
// In this case, the location of (360,380) describes the _upper left_
// corner of the node bounds
INode node3 = Graph.CreateNode(new RectD(360, 380, 80, 40));
/////////////////////////////////////////////////////
//////////// Sample edge creation ///////////////////
// Creates some edges between the nodes
IEdge edge1 = Graph.CreateEdge(node1, node2);
IEdge edge2 = Graph.CreateEdge(node2, node3);
/////////////////////////////////////////////////////
//////////// Using Bends ////////////////////////////
// Creates the first bend for edge2 at (400, 50)
IBend bend1 = Graph.AddBend(edge2, new PointD(400, 50));
/////////////////////////////////////////////////////
//////////// Using Ports ////////////////////////////
// Actually, edges connect "ports", not nodes directly.
// If necessary, you can manually create ports at nodes
// and let the edges connect to these.
// Creates a port in the center of the node layout
IPort port1AtNode1 = Graph.AddPort(node1, FreeNodePortLocationModel.NodeCenterAnchored);
// Creates a port at the middle of the left border
// Note to use absolute locations when placing ports using PointD.
IPort port1AtNode3 = Graph.AddPort(node3, new PointD(node3.Layout.X, node3.Layout.GetCenter().Y));
// Creates an edge that connects these specific ports
IEdge edgeAtPorts = Graph.CreateEdge(port1AtNode1, port1AtNode3);
/////////////////////////////////////////////////////
//////////// Sample label creation ///////////////////
// Adds labels to several graph elements
Graph.AddLabel(node1, "N 1");
Graph.AddLabel(node2, "N 2");
Graph.AddLabel(node3, "N 3");
Graph.AddLabel(edgeAtPorts, "Edge at Ports");
/////////////////////////////////////////////////////
/////////////////////////////////////////////////////
#endregion
}
/// <summary>
/// Creates a sample graph and introduces all important graph elements present in
/// yFiles.NET. Additionally, this method now overrides the label placement for some specific labels.
/// </summary>
private void PopulateGraph()
{
#region Sample Graph creation
//////////// Sample node creation ///////////////////
// Creates two nodes with the default node size
// The location is specified for the _center_
INode node1 = Graph.CreateNode(new PointD(50, 50));
INode node2 = Graph.CreateNode(new PointD(150, 50));
// Creates a third node with a different size of 80x40
// In this case, the location of (360,380) describes the _upper left_
// corner of the node bounds
INode node3 = Graph.CreateNode(new RectD(360, 380, 80, 40));
/////////////////////////////////////////////////////
//////////// Sample edge creation ///////////////////
// Creates some edges between the nodes
IEdge edge1 = Graph.CreateEdge(node1, node2);
IEdge edge2 = Graph.CreateEdge(node2, node3);
/////////////////////////////////////////////////////
//////////// Using Bends ////////////////////////////
// Creates the first bend for edge2 at (400, 50)
IBend bend1 = Graph.AddBend(edge2, new PointD(400, 50));
/////////////////////////////////////////////////////
//////////// Using Ports ////////////////////////////
// Actually, edges connect "ports", not nodes directly.
// If necessary, you can manually create ports at nodes
// and let the edges connect to these.
// Creates a port in the center of the node layout
IPort port1AtNode1 = Graph.AddPort(node1, FreeNodePortLocationModel.NodeCenterAnchored);
// Creates a port at the middle of the left border
// Note to use absolute locations when placing ports using PointD.
IPort port1AtNode3 = Graph.AddPort(node3, new PointD(node3.Layout.X, node3.Layout.GetCenter().Y));
// Creates an edge that connects these specific ports
IEdge edgeAtPorts = Graph.CreateEdge(port1AtNode1, port1AtNode3);
/////////////////////////////////////////////////////
//////////// Sample label creation ///////////////////
// Adds labels to several graph elements
Graph.AddLabel(node1, "N 1");
Graph.AddLabel(node2, "N 2");
var node3Label = Graph.AddLabel(node3, "N 3");
Graph.AddLabel(edgeAtPorts, "Edge at Ports");
/////////////////////////////////////////////////////
/////////////////////////////////////////////////////
#endregion
///////////////// New in this Sample /////////////////
// Override default label placement
// For our "special" label, we use a model that describes discrete positions
// outside the node bounds
ExteriorLabelModel exteriorLabelModel = new ExteriorLabelModel();
// We use some extra insets from the label to the node bounds
exteriorLabelModel.Insets = new InsetsD(5);
// We assign this label a specific symbolic position out of the eight possible
// external locations valid for ExteriorLabelModel
Graph.SetLabelLayoutParameter(node3Label, exteriorLabelModel.CreateParameter(ExteriorLabelModel.Position.South));
/////////////////////////////////////////////////////
}
/// <summary>
/// Creates a new instance that wraps the original <paramref name="coreHandle"/> for the given <paramref name="bend"/>.
/// </summary>
public OuterControlPointHandle([NotNull] IHandle coreHandle, [NotNull] IBend bend)
{
this.coreHandle = coreHandle;
this.bend = bend;
}