/// <summary>
/// Creates a new bend at the given location. If this bend is on the first or last segment,
/// a second bend is created and placed at a location that ensures that the newly create
/// inner segment is orthogonal.
/// </summary>
public int CreateBend(IInputModeContext context, IGraph graph, IEdge edge, PointD location)
{
var edgePoints = GetEdgePoints(edge);
var closestSegment = DetermineBendSegmentIndex(edgePoints, location);
int firstSegment = 0;
int lastSegment = edge.Bends.Count;
// if bend wasn't created in first or last segment, call default action
if (closestSegment != firstSegment && closestSegment != lastSegment)
{
return((new DefaultBendCreator()).CreateBend(context, graph, edge, location));
}
// add created bend and another one to make the edge stay orthogonal
if (closestSegment == -1 || context == null || !(context.ParentInputMode is CreateBendInputMode))
{
return(-1);
}
var editingContext = context.Lookup <OrthogonalEdgeEditingContext>();
if (editingContext == null)
{
return(-1);
}
if (closestSegment == firstSegment)
{
IPoint nextPoint = edgePoints[1];
// get orientation of next edge segment to determine second bend location
SegmentOrientation orientation = editingContext.GetSegmentOrientation(edge, 1);
graph.AddBend(edge, location, 0);
if (orientation == SegmentOrientation.Horizontal)
{
graph.AddBend(edge, new PointD(nextPoint.X, location.Y), 1);
}
else if (orientation == SegmentOrientation.Vertical)
{
graph.AddBend(edge, new PointD(location.X, nextPoint.Y), 1);
}
return(0);
}
if (closestSegment == lastSegment)
{
IPoint prevPoint = edgePoints[edge.Bends.Count];
// get orientation of next edge segment to determine second bend location
SegmentOrientation orientation = editingContext.GetSegmentOrientation(edge, edge.Bends.Count - 1);
graph.AddBend(edge, location, edge.Bends.Count);
if (orientation == SegmentOrientation.Horizontal)
{
graph.AddBend(edge, new PointD(prevPoint.X, location.Y), edge.Bends.Count - 1);
}
else if (orientation == SegmentOrientation.Vertical)
{
graph.AddBend(edge, new PointD(location.X, prevPoint.Y), edge.Bends.Count - 1);
}
return(edge.Bends.Count - 1);
}
return(-1);
}
/// <summary>
/// Initializes a new instance of the <see cref="DigitalBar"/> class.
/// </summary>
/// <param name="orientation">The orientation.</param>
public DigitalBar(SegmentOrientation orientation)
{
Color = Color.Black;
OpacityWhenOff = 0.1d;
IsOn = true;
m_orientation = orientation;
Corners = SegmentCorners.None;
Padding = 0;
m_redrawRegion = new Region();
CalculatePaths(new RectangleF());
}
public DigitalBar(SegmentOrientation orientation)
{
Color = Color.Black;
OpacityWhenOff = 0.1d;
IsOn = true;
m_orientation = orientation;
Corners = SegmentCorners.None;
Padding = 0;
m_redrawRegion = new Region();
CalculatePaths(new RectangleF());
}
