private GraphicsPath CalculateJumpPath(PointF a, PointF b)
{
GraphicsPath path = new GraphicsPath();
List <PointF> jumps = new List <PointF>();
float diameter = 10F;
if (Rounded)
{
diameter = 15F;
}
//Loop through all connectors in the renderlist
foreach (Element element in Model.Elements)
{
//Check if connector lower down then this connector and overlaps this connector
if (element is Connector && element.ZOrder > ZOrder && element.Bounds.IntersectsWith(Bounds))
{
Connector connector = (Connector)element;
PointF prev = PointF.Empty;
//Get the intersection of the line between the points provided and this connector
foreach (PointF point in connector.Points)
{
if (!prev.IsEmpty)
{
PointF intersection = PointF.Empty;
//Return the line intersection (if any) and add to jumps list
if (Geometry.LineIntersection(a, b, prev, point, ref intersection))
{
//Check the intersection doesnt overlap with the point
if (ValidateJump(intersection, b, diameter))
{
jumps.Add(intersection);
}
}
}
prev = point;
}
}
}
//Sort the arraylist from smallest to biggest
if (jumps.Count > 1)
{
PointFComparer comparer = new PointFComparer();
if (a.X == b.X)
{
comparer.Horizontal = false;
comparer.Ascending = (a.Y < b.Y);
}
else
{
comparer.Horizontal = true;
comparer.Ascending = (a.X < b.X);
}
jumps.Sort(comparer);
}
float angle;
float sweep = 180;
//Set up the correct starting angle
if (a.X == b.X)
{
if (a.Y < b.Y)
{
angle = -90;
}
else
{
angle = 90;
}
}
else
{
if (a.X < b.X)
{
angle = 180;
}
else
{
angle = 0;
}
}
//Loop through adding arcs for jump points
if (jumps.Count == 0)
{
path.AddLine(a, b);
}
else
{
PointF last = a;
PointF start = PointF.Empty;
PointF end = PointF.Empty;
RectangleF bound = RectangleF.Empty;
foreach (PointF point in jumps)
{
//Determine start and end points for the arc
if (a.X == b.X)
{
if (a.Y < b.Y)
{
start = new PointF(point.X, point.Y - 5F);
end = new PointF(point.X, point.Y + 5F);
}
else
{
start = new PointF(point.X, point.Y + 5F);
end = new PointF(point.X, point.Y - 5F);
}
}
else
{
if (a.X < b.X)
{
start = new PointF(point.X - 5F, point.Y);
end = new PointF(point.X + 5F, point.Y);
}
else
{
start = new PointF(point.X + 5F, point.Y);
end = new PointF(point.X - 5F, point.Y);
}
}
//Calculate the bounds of the arc
bound = new RectangleF(point, new SizeF(10F, 10F));
bound.Offset(-5F, -5F);
path.AddLine(last, start);
path.AddArc(bound, angle, sweep);
path.StartFigure();
last = end;
}
path.AddLine(last, b);
}
return(path);
}
private GraphicsPath CalculateJumpPath(PointF a, PointF b)
{
GraphicsPath path = new GraphicsPath();
ArrayList jumps = new ArrayList();
float diameter = 10F;
if (Rounded) diameter = 15F;
//Loop through all connectors in the renderlist
foreach (Element element in Container.RenderList)
{
//Check if connector lower down then this connector and overlaps this connector
if (element is Connector && element.ZOrder > ZOrder && element.Rectangle.IntersectsWith(Rectangle))
{
Connector connector = (Connector) element;
PointF prev = PointF.Empty;
//Get the intersection of the line between the points provided and this connector
foreach (PointF point in connector.Points)
{
if (!prev.IsEmpty)
{
PointF intersection = PointF.Empty;
//Return the line intersection (if any) and add to jumps arraylist
if (Geometry.LineIntersection(a, b, prev, point,ref intersection))
{
//Check the intersection doesnt overlap with the point
if (ValidateJump(intersection, b, diameter)) jumps.Add(intersection);
}
}
prev = point;
}
}
}
//Sort the arraylist from smallest to biggest
if (jumps.Count > 1)
{
PointFComparer comparer = new PointFComparer();
if (a.X == b.X)
{
comparer.Horizontal = false;
comparer.Ascending = (a.Y < b.Y);
}
else
{
comparer.Horizontal = true;
comparer.Ascending = (a.X < b.X);
}
jumps.Sort(comparer);
}
float angle;
float sweep = 180;
//Set up the correct starting angle
if (a.X == b.X)
{
if (a.Y < b.Y)
{
angle = -90;
}
else
{
angle = 90;
}
}
else
{
if (a.X < b.X)
{
angle = 180;
}
else
{
angle = 0;
}
}
//Loop through adding arcs for jump points
if (jumps.Count == 0)
{
path.AddLine(a,b);
}
else
{
PointF last = a;
PointF start = PointF.Empty;
PointF end = PointF.Empty;
RectangleF bound = RectangleF.Empty;
foreach (PointF point in jumps)
{
//Determine start and end points for the arc
if (a.X == b.X)
{
if (a.Y < b.Y)
{
start = new PointF(point.X, point.Y - 5F);
end = new PointF(point.X, point.Y + 5F);
}
else
{
start = new PointF(point.X, point.Y + 5F);
end = new PointF(point.X, point.Y - 5F);
}
}
else
{
if (a.X < b.X)
{
start = new PointF(point.X - 5F, point.Y);
end = new PointF(point.X + 5F, point.Y);
}
else
{
start = new PointF(point.X + 5F, point.Y);
end = new PointF(point.X - 5F, point.Y);
}
}
//Calculate the bounds of the arc
bound = new RectangleF(point,new SizeF(10F,10F));
bound.Offset(-5F,-5F);
path.AddLine(last, start);
path.AddArc(bound, angle, sweep);
path.StartFigure();
last = end;
}
path.AddLine(last, b);
}
return path;
}
