public static SmoothedPolyline SmoothedPolylineTranslate(SmoothedPolyline smoothedPolyline, Vector deltaVec)
{
GPoint delta = new GPoint(deltaVec.X, deltaVec.Y);
SmoothedPolyline sm = smoothedPolyline.Clone();
for (Microsoft.Msagl.Core.Geometry.Site s = sm.HeadSite, s0 = sm.HeadSite;
s != null;
s = s.Next, s0 = s0.Next)
{
s.Point = s0.Point + delta;
}
return(sm);
}
public static SmoothedPolyline SmoothedPolylineTransform(SmoothedPolyline smoothedPolyline, PlaneTransformation m)
{
//GPoint delta = new GPoint(deltaVec.X, deltaVec.Y);
SmoothedPolyline sm = smoothedPolyline.Clone();
//PlaneTransformation pt = new PlaneTransformation(m.M11, m.M12,m.OffsetX,m.M21, m.M22, m.OffsetY);
for (Microsoft.Msagl.Core.Geometry.Site s = sm.HeadSite, s0 = sm.HeadSite;
s != null;
s = s.Next, s0 = s0.Next)
{
s.Point = m * s0.Point;
}
return(sm);
}
public static Site GetPreviousSite(SmoothedPolyline sm, GPoint point)
{
Site prevSite = sm.HeadSite;
Site nextSite = prevSite.Next;
do
{
if (BetweenSites(prevSite, nextSite, point))
{
return(prevSite);
}
prevSite = nextSite;
nextSite = nextSite.Next;
} while (nextSite != null);
return(null);
}
internal static SmoothedPolyline CreateUnderlyingPolylineForSelfEdge(GPoint p0, double dx, double dy)
{
var p1 = p0 + new GPoint(0, dy);
var p2 = p0 + new GPoint(dx, dy);
var p3 = p0 + new GPoint(dx, -dy);
var p4 = p0 + new GPoint(0, -dy);
var site = new Site(p0);
var polyline = new SmoothedPolyline(site);
site = new Site(site, p1);
site = new Site(site, p2);
site = new Site(site, p3);
site = new Site(site, p4);
new Site(site, p0);
return(polyline);
}
public static Site FindCornerForEdit(SmoothedPolyline underlyingPolyline, GPoint mousePoint, double tolerance)
{
Site site = underlyingPolyline.HeadSite.Next;
tolerance *= tolerance; //square the tolerance
do
{
if (site.Previous == null || site.Next == null)
{
continue; //don't return the first and the last corners
}
GPoint diff = mousePoint - site.Point;
if (diff * diff <= tolerance)
{
return(site);
}
site = site.Next;
} while (site.Next != null);
return(null);
}
public static void CreateSimpleEdgeCurveWithUnderlyingPolyline(Edge edge)
{
//ValidateArg.IsNotNull(edge, "edge");
var a = edge.srcNode.Center;
var b = edge.tarNode.Center;
if (edge.srcNode == edge.tarNode)
{
var dx = 2.0 / 3 * edge.srcNode.borderCurve.BoundingBox.Width;
var dy = edge.srcNode.borderCurve.BoundingBox.Height / 4;
edge.underlying = CreateUnderlyingPolylineForSelfEdge(new GPoint(a.X, a.Y), dx, dy);
edge.lineCurve = edge.underlying.CreateCurve();
}
else
{
edge.underlying = SmoothedPolyline.FromPoints(new[] { new GPoint(a.X, a.Y), new GPoint(b.X, b.Y) });
edge.lineCurve = edge.underlying.CreateCurve();
}
Edge.TrimSplineByBoundaryAndArrowhead(edge, false);
//.TrimSplineAndCalculateArrowheads(edge.EdgeGeometry,
// edge.Source.BoundaryCurve,
// edge.Target.BoundaryCurve,
// edge.Curve, false, false);
}
public static Tuple <Site, PolylineCornerType> AnalyzeInsertOrDeletePolylineCorner(SmoothedPolyline sm, GPoint point, double tolerance)
{
//tolerance += SelectedEdge.Edge.Attr.LineWidth;
Site corner = FindCornerForEdit(sm, point, tolerance);
if (corner != null)
{
return(new Tuple <Site, PolylineCornerType>(corner, PolylineCornerType.CornerToDelete));
}
corner = GetPreviousSite(sm, point);
if (corner != null)
{
return(new Tuple <Site, PolylineCornerType>(corner, PolylineCornerType.PreviousCornerForInsertion));
}
return(null);
}
