public static ConnectionRoute DrawRouteBetweenShapes(
this Canvas InCanvas, Shape Shape1, Shape Shape2)
{
ConnectionRoute selectedRoute = null;
// for each direction from the from shape.
var possibleRoutes = new List <ConnectionRoute>();
foreach (var dir in WhichDirectionExt.Directions())
{
var side = new ShapeSide(Shape1, dir.ToSide());
var route = new ConnectionRoute(side, Shape2);
{
var leg = route.DrawInitialLegToShape();
if (leg == null)
{
continue;
}
route.AddLeg(leg);
}
while (true)
{
if (Shape2.Intersects(route.LastLeg.End))
{
break;
}
var leg = route.DrawLegToShape();
route.AddLeg(leg);
}
// add the route to the possible routes list.
possibleRoutes.Add(route);
}
// select the route with the fewest number of legs.
foreach (var route in possibleRoutes)
{
if (selectedRoute == null)
{
selectedRoute = route;
}
else if (route.LegCount < selectedRoute.LegCount)
{
selectedRoute = route;
}
}
if (selectedRoute != null)
{
InCanvas.DrawLinesOfRoute(selectedRoute);
Shape1.StoreConnection(selectedRoute, Shape2);
Shape2.StoreConnection(selectedRoute, Shape1);
}
return(selectedRoute);
}
public static ConnectionRoute StartConnectionRouteToShape(
Shape FromShape, WhichSide StartSide, Shape ToShape)
{
var fromSide = new ShapeSide(FromShape, StartSide);
ConnectionRoute route = new ConnectionRoute(fromSide, ToShape);
return(route);
}
public ConnectionRoute(ShapeSide FromSide, Shape ToShape)
{
this.FromSide = FromSide;
this.ToShape = ToShape;
}
/// <summary>
/// Fill and return a SideToShapeInfo object with info on
/// </summary>
/// <param name="Shape"></param>
/// <param name="Side"></param>
/// <returns></returns>
public static SideToShapeInfo DirectionToShape(this Shape Shape, ShapeSide Side)
{
var info = new SideToShapeInfo(Side, Shape);
return info;
}