/// <summary>
/// this code should never work!
/// </summary>
/// <param name="edge"></param>
/// <param name="a"></param>
/// <param name="b"></param>
static void CreateEdgeCurveWithNoTrimming(Edge edge, Point a, Point b)
{
Point ab = b - a;
ab = ab.Normalize();
Point lineStart = a;
Point lineEnd = b;
Arrowhead targetArrow = edge.EdgeGeometry.TargetArrowhead;
if (targetArrow != null)
{
targetArrow.TipPosition = b;
lineEnd = b - ab * targetArrow.Length;
}
Arrowhead sourceArrow = edge.EdgeGeometry.SourceArrowhead;
if (sourceArrow != null)
{
sourceArrow.TipPosition = a;
lineStart = a + ab * sourceArrow.Length;
}
edge.Curve = new LineSegment(lineStart, lineEnd);
}
public FrameworkElement CreateFrameworkElementForRailArrowhead(Rail rail, Arrowhead arrowhead, Point curveAttachmentPoint, byte edgeTransparency) {
var streamGeometry = new StreamGeometry();
using (StreamGeometryContext context = streamGeometry.Open()) {
AddArrow(context, curveAttachmentPoint, arrowhead.TipPosition,
PathStrokeThickness);
//arrowhead.BasePoint = curveAttachmentPoint;
}
var path=new Path
{
Data = streamGeometry,
Tag = this
};
SetPathStrokeToRailPath(rail, path);
return path;
}
internal Rail(Arrowhead arrowhead, Point curveAttachmentPoint, LgEdgeInfo topRankedEdgeInfoOfTheRail,
int zoomLevel)
#if DEBUG
: this()
#endif
{
TopRankedEdgeInfoOfTheRail = topRankedEdgeInfoOfTheRail;
Geometry = arrowhead.Clone();
CurveAttachmentPoint = curveAttachmentPoint;
ZoomLevel = zoomLevel;
}
void CreateStatisticsForArrowhead(Arrowhead arrowhead) {
TileStatistic tile = GetOrCreateTileStatistic(arrowhead.TipPosition);
tile.rails++;
}
Rail ContinueReadingRail(LgEdgeInfo topRankedEdgoInfo, int zoomLevel, LgLevel level) {
XmlRead();
string pointString;
if (TokenIs(GeometryToken.Arrowhead)) {
Point arrowheadPosition = TryGetPointAttribute(GeometryToken.ArrowheadPosition);
Point attachmentPoint = TryGetPointAttribute(GeometryToken.CurveAttachmentPoint);
Arrowhead ah = new Arrowhead {
TipPosition = arrowheadPosition,
Length = (attachmentPoint - arrowheadPosition).Length
};
XmlRead();
ReadEndElement();
var rail = new Rail(ah, attachmentPoint, topRankedEdgoInfo, zoomLevel);
var tuple = new SymmetricSegment(arrowheadPosition, attachmentPoint);
level._railDictionary[tuple] = rail;
return rail;
}
if (TokenIs(GeometryToken.LineSegment)) {
pointString = GetAttribute(GeometryToken.Points);
var linePoints = ParsePoints(pointString);
Debug.Assert(linePoints.Length == 2);
LineSegment ls = new LineSegment(linePoints[0], linePoints[1]);
XmlRead();
ReadEndElement();
var rail = new Rail(ls, topRankedEdgoInfo, zoomLevel);
var tuple = new SymmetricSegment(ls.Start, ls.End);
level._railDictionary[tuple] = rail;
level._railTree.Add(ls.BoundingBox, rail);
return rail;
}
if (TokenIs(GeometryToken.CubicBezierSegment)) {
pointString = GetAttribute(GeometryToken.Points);
var controlPoints = ParsePoints(pointString);
Debug.Assert(controlPoints.Length == 4);
var bs = new CubicBezierSegment(controlPoints[0], controlPoints[1], controlPoints[2], controlPoints[3]);
XmlRead();
ReadEndElement();
var rail = new Rail(bs, topRankedEdgoInfo, zoomLevel);
var tuple = new SymmetricSegment(bs.Start, bs.End);
level._railDictionary[tuple] = rail;
return rail;
}
throw new Exception();
}
