internal void AddControlPoint(ControlPoint cp)
{
m_ControlPoints.Add(cp);
}
private ControlPoint CreateControlPoints(bool editMode, out ControlPoint lastEndPoint, PathSegment psRet)
{
ControlPoint cpRet = null;
lastEndPoint = null;
if (editMode)
{
ControlPoint lastCP = null;
ControlPoint bezierTmpCP = null;
PathGeom.DoForAllPointDPs(new DependencyPropertyCallback((DependencyObject obj, DependencyProperty dp) =>
{
var cp = new ControlPoint(Drawing, this, obj, dp, 0, true, true);
cp.Tag = obj;
Drawing.AddControlPoint(cp);
if (dp.OwnerType == typeof(BezierSegment))
{
if (dp.Name == "Point1") // control point 1
{
lastCP.SubPoint = cp;
cp.ConnectedTo = lastCP;
cp.IsSelectable = false;
}
else if (dp.Name == "Point2") // control point 2
{
cp.IsSelectable = false;
bezierTmpCP = cp;
}
else if (dp.Name == "Point3") // end point
{
cp.SubPoint = bezierTmpCP;
bezierTmpCP.ConnectedTo = cp;
lastCP = cp;
}
}
else if (dp.OwnerType == typeof(QuadraticBezierSegment))
{
if (dp.Name == "Point1") // control point 2
{
cp.IsSelectable = false;
bezierTmpCP = cp;
}
else if (dp.Name == "Point2") // end point
{
cp.SubPoint = bezierTmpCP;
bezierTmpCP.ConnectedTo = cp;
lastCP = cp;
}
}
else
{
lastCP = cp;
}
if (obj == psRet)
{
cpRet = lastCP;
}
}));
lastEndPoint = lastCP;
}
return(cpRet);
}
private void CreateControlPoints(bool editMode, out ControlPoint endCP)
{
Drawing.AddControlPoint(new ControlPoint(Drawing, this, LineGeom, LineGeometry.StartPointProperty, 0, true, false));
endCP = new ControlPoint(Drawing, this, LineGeom, LineGeometry.EndPointProperty, 0, true, false);
Drawing.AddControlPoint(endCP);
}
internal ControlPoint ChangeSegmentType(ControlPoint controlPoint, string type)
{
PathFigure figure = null;
foreach (var f in PathGeom.Figures)
{
if (f.Segments.Contains(controlPoint.Tag as PathSegment))
{
figure = f;
}
}
if (figure == null)
{
throw new ArgumentException("Segment of controlPoint is not in this path");
}
Point startPoint = GetSegmentStartPoint(figure, controlPoint.Tag as PathSegment);
Point endPoint = GetSegmentEndPoint(figure, controlPoint.Tag as PathSegment);
Point pathControlPoint1 = new Point();
Point pathControlPoint2 = new Point();
if (controlPoint.Tag is LineSegment || controlPoint.Tag is ArcSegment)
{
pathControlPoint1 = startPoint + (endPoint - startPoint) * 0.3;
pathControlPoint2 = endPoint + (startPoint - endPoint) * 0.3;
}
else if (controlPoint.Tag is BezierSegment)
{
pathControlPoint1 = (controlPoint.Tag as BezierSegment).Point1;
pathControlPoint2 = (controlPoint.Tag as BezierSegment).Point2;
}
else if (controlPoint.Tag is QuadraticBezierSegment)
{
pathControlPoint1 = startPoint + (endPoint - startPoint) * 0.3;
pathControlPoint2 = (controlPoint.Tag as QuadraticBezierSegment).Point1;
}
PathSegment newSegment = null;
if (String.CompareOrdinal(type, "LineSegment") == 0)
{
var lSegment = new LineSegment();
lSegment.Point = endPoint;
newSegment = lSegment;
}
else if (String.CompareOrdinal(type, "ArcSegment") == 0)
{
var aSegment = new ArcSegment();
aSegment.Point = endPoint;
var d = endPoint - startPoint;
aSegment.Size = new Size(Math.Abs(d.X) * 2.0, Math.Abs(d.Y) * 2.0);
aSegment.IsLargeArc = false;
aSegment.SweepDirection = SweepDirection.Clockwise;
newSegment = aSegment;
}
else if (String.CompareOrdinal(type, "BezierSegment") == 0)
{
var bSegment = new BezierSegment();
bSegment.Point1 = pathControlPoint1;
bSegment.Point2 = pathControlPoint2;
bSegment.Point3 = endPoint;
newSegment = bSegment;
}
else if (String.CompareOrdinal(type, "QuadraticBezierSegment") == 0)
{
var qSegment = new QuadraticBezierSegment();
qSegment.Point1 = pathControlPoint2;
qSegment.Point2 = endPoint;
newSegment = qSegment;
}
if (newSegment != null)
{
figure.Segments.Insert(figure.Segments.IndexOf(controlPoint.Tag as PathSegment), newSegment);
figure.Segments.Remove(controlPoint.Tag as PathSegment);
Drawing.ClearControlPoints();
ControlPoint cpDummy;
controlPoint = CreateControlPoints(true, out cpDummy, newSegment);
}
return(controlPoint);
}
