private void CreateHatchBoundsAndEntitiess(Core2D.XPathGeometry pg, double dx, double dy, out ICollection <HatchBoundaryPath> bounds, out ICollection <EntityObject> entities)
{
bounds = new List <HatchBoundaryPath>();
entities = new List <EntityObject>();
// TODO: FillMode = pg.FillRule == Core2D.XFillRule.EvenOdd ? FillMode.Alternate : FillMode.Winding;
foreach (var pf in pg.Figures)
{
var edges = new List <EntityObject>();
var startPoint = pf.StartPoint;
foreach (var segment in pf.Segments)
{
if (segment is Core2D.XArcSegment)
{
throw new NotSupportedException("Not supported segment type: " + segment.GetType());
//var arcSegment = segment as Core2D.XArcSegment;
// TODO: Convert WPF/SVG elliptical arc segment format to DXF ellipse arc.
//startPoint = arcSegment.Point;
}
else if (segment is Core2D.XBezierSegment)
{
var bezierSegment = segment as Core2D.XBezierSegment;
var dxfSpline = CreateCubicSpline(
startPoint.X + dx,
startPoint.Y + dy,
bezierSegment.Point1.X + dx,
bezierSegment.Point1.Y + dy,
bezierSegment.Point2.X + dx,
bezierSegment.Point2.Y + dy,
bezierSegment.Point3.X + dx,
bezierSegment.Point3.Y + dy);
edges.Add(dxfSpline);
entities.Add((Spline)dxfSpline.Clone());
startPoint = bezierSegment.Point3;
}
else if (segment is Core2D.XLineSegment)
{
var lineSegment = segment as Core2D.XLineSegment;
var dxfLine = CreateLine(
startPoint.X + dx,
startPoint.Y + dy,
lineSegment.Point.X + dx,
lineSegment.Point.Y + dy);
edges.Add(dxfLine);
entities.Add((Line)dxfLine.Clone());
startPoint = lineSegment.Point;
}
else if (segment is Core2D.XPolyBezierSegment)
{
var polyBezierSegment = segment as Core2D.XPolyBezierSegment;
if (polyBezierSegment.Points.Count >= 3)
{
var dxfSpline = CreateCubicSpline(
startPoint.X + dx,
startPoint.Y + dy,
polyBezierSegment.Points[0].X + dx,
polyBezierSegment.Points[0].Y + dy,
polyBezierSegment.Points[1].X + dx,
polyBezierSegment.Points[1].Y + dy,
polyBezierSegment.Points[2].X + dx,
polyBezierSegment.Points[2].Y + dy);
edges.Add(dxfSpline);
entities.Add((Spline)dxfSpline.Clone());
}
if (polyBezierSegment.Points.Count > 3 &&
polyBezierSegment.Points.Count % 3 == 0)
{
for (int i = 3; i < polyBezierSegment.Points.Count; i += 3)
{
var dxfSpline = CreateCubicSpline(
polyBezierSegment.Points[i - 1].X + dx,
polyBezierSegment.Points[i - 1].Y + dy,
polyBezierSegment.Points[i].X + dx,
polyBezierSegment.Points[i].Y + dy,
polyBezierSegment.Points[i + 1].X + dx,
polyBezierSegment.Points[i + 1].Y + dy,
polyBezierSegment.Points[i + 2].X + dx,
polyBezierSegment.Points[i + 2].Y + dy);
edges.Add(dxfSpline);
entities.Add((Spline)dxfSpline.Clone());
}
}
startPoint = polyBezierSegment.Points.Last();
}
else if (segment is Core2D.XPolyLineSegment)
{
var polyLineSegment = segment as Core2D.XPolyLineSegment;
if (polyLineSegment.Points.Count >= 1)
{
var dxfLine = CreateLine(
startPoint.X + dx,
startPoint.Y + dy,
polyLineSegment.Points[0].X + dx,
polyLineSegment.Points[0].Y + dy);
edges.Add(dxfLine);
entities.Add((Line)dxfLine.Clone());
}
if (polyLineSegment.Points.Count > 1)
{
for (int i = 1; i < polyLineSegment.Points.Count; i++)
{
var dxfLine = CreateLine(
polyLineSegment.Points[i - 1].X + dx,
polyLineSegment.Points[i - 1].Y + dy,
polyLineSegment.Points[i].X + dx,
polyLineSegment.Points[i].Y + dy);
edges.Add(dxfLine);
entities.Add((Line)dxfLine.Clone());
}
}
startPoint = polyLineSegment.Points.Last();
}
else if (segment is Core2D.XPolyQuadraticBezierSegment)
{
var polyQuadraticSegment = segment as Core2D.XPolyQuadraticBezierSegment;
if (polyQuadraticSegment.Points.Count >= 2)
{
var dxfSpline = CreateQuadraticSpline(
startPoint.X + dx,
startPoint.Y + dy,
polyQuadraticSegment.Points[0].X + dx,
polyQuadraticSegment.Points[0].Y + dy,
polyQuadraticSegment.Points[1].X + dx,
polyQuadraticSegment.Points[1].Y + dy);
edges.Add(dxfSpline);
entities.Add((Spline)dxfSpline.Clone());
}
if (polyQuadraticSegment.Points.Count > 2 &&
polyQuadraticSegment.Points.Count % 2 == 0)
{
for (int i = 3; i < polyQuadraticSegment.Points.Count; i += 3)
{
var dxfSpline = CreateQuadraticSpline(
polyQuadraticSegment.Points[i - 1].X + dx,
polyQuadraticSegment.Points[i - 1].Y + dy,
polyQuadraticSegment.Points[i].X + dx,
polyQuadraticSegment.Points[i].Y + dy,
polyQuadraticSegment.Points[i + 1].X + dx,
polyQuadraticSegment.Points[i + 1].Y + dy);
edges.Add(dxfSpline);
entities.Add((Spline)dxfSpline.Clone());
}
}
startPoint = polyQuadraticSegment.Points.Last();
}
else if (segment is Core2D.XQuadraticBezierSegment)
{
var qbezierSegment = segment as Core2D.XQuadraticBezierSegment;
var dxfSpline = CreateQuadraticSpline(
startPoint.X + dx,
startPoint.Y + dy,
qbezierSegment.Point1.X + dx,
qbezierSegment.Point1.Y + dy,
qbezierSegment.Point2.X + dx,
qbezierSegment.Point2.Y + dy);
edges.Add(dxfSpline);
entities.Add((Spline)dxfSpline.Clone());
startPoint = qbezierSegment.Point2;
}
else
{
throw new NotSupportedException("Not supported segment type: " + segment.GetType());
}
}
// TODO: Add support for pf.IsClosed
var path = new HatchBoundaryPath(edges);
bounds.Add(path);
}
}
/// <summary>
///
/// </summary>
/// <param name="pg"></param>
/// <param name="dx"></param>
/// <param name="dy"></param>
/// <param name="scale"></param>
/// <returns></returns>
public static XGraphicsPath ToXGraphicsPath(this Core2D.XPathGeometry pg, double dx, double dy, Func <double, double> scale)
{
var gp = new XGraphicsPath();
gp.FillMode = pg.FillRule == Core2D.XFillRule.EvenOdd ? XFillMode.Alternate : XFillMode.Winding;
foreach (var pf in pg.Figures)
{
var startPoint = pf.StartPoint;
foreach (var segment in pf.Segments)
{
if (segment is Core2D.XArcSegment)
{
#if CORE
//var arcSegment = segment as Core2D.XArcSegment;
// TODO: Convert WPF/SVG elliptical arc segment format to GDI+ bezier curves.
//startPoint = arcSegment.Point;
#endif
#if WPF
var arcSegment = segment as Core2D.XArcSegment;
var point1 = new XPoint(
scale(startPoint.X),
scale(startPoint.Y));
var point2 = new XPoint(
scale(arcSegment.Point.X),
scale(arcSegment.Point.Y));
var size = new XSize(
scale(arcSegment.Size.Width),
scale(arcSegment.Size.Height));
gp.AddArc(
point1,
point2,
size, arcSegment.RotationAngle, arcSegment.IsLargeArc,
arcSegment.SweepDirection == Core2D.XSweepDirection.Clockwise ? XSweepDirection.Clockwise : XSweepDirection.Counterclockwise);
startPoint = arcSegment.Point;
#endif
}
else if (segment is Core2D.XBezierSegment)
{
var bezierSegment = segment as Core2D.XBezierSegment;
gp.AddBezier(
scale(startPoint.X),
scale(startPoint.Y),
scale(bezierSegment.Point1.X),
scale(bezierSegment.Point1.Y),
scale(bezierSegment.Point2.X),
scale(bezierSegment.Point2.Y),
scale(bezierSegment.Point3.X),
scale(bezierSegment.Point3.Y));
startPoint = bezierSegment.Point3;
}
else if (segment is Core2D.XLineSegment)
{
var lineSegment = segment as Core2D.XLineSegment;
gp.AddLine(
scale(startPoint.X),
scale(startPoint.Y),
scale(lineSegment.Point.X),
scale(lineSegment.Point.Y));
startPoint = lineSegment.Point;
}
else if (segment is Core2D.XPolyBezierSegment)
{
var polyBezierSegment = segment as Core2D.XPolyBezierSegment;
if (polyBezierSegment.Points.Count >= 3)
{
gp.AddBezier(
scale(startPoint.X),
scale(startPoint.Y),
scale(polyBezierSegment.Points[0].X),
scale(polyBezierSegment.Points[0].Y),
scale(polyBezierSegment.Points[1].X),
scale(polyBezierSegment.Points[1].Y),
scale(polyBezierSegment.Points[2].X),
scale(polyBezierSegment.Points[2].Y));
}
if (polyBezierSegment.Points.Count > 3 &&
polyBezierSegment.Points.Count % 3 == 0)
{
for (int i = 3; i < polyBezierSegment.Points.Count; i += 3)
{
gp.AddBezier(
scale(polyBezierSegment.Points[i - 1].X),
scale(polyBezierSegment.Points[i - 1].Y),
scale(polyBezierSegment.Points[i].X),
scale(polyBezierSegment.Points[i].Y),
scale(polyBezierSegment.Points[i + 1].X),
scale(polyBezierSegment.Points[i + 1].Y),
scale(polyBezierSegment.Points[i + 2].X),
scale(polyBezierSegment.Points[i + 2].Y));
}
}
startPoint = polyBezierSegment.Points.Last();
}
else if (segment is Core2D.XPolyLineSegment)
{
var polyLineSegment = segment as Core2D.XPolyLineSegment;
if (polyLineSegment.Points.Count >= 1)
{
gp.AddLine(
scale(startPoint.X),
scale(startPoint.Y),
scale(polyLineSegment.Points[0].X),
scale(polyLineSegment.Points[0].Y));
}
if (polyLineSegment.Points.Count > 1)
{
for (int i = 1; i < polyLineSegment.Points.Count; i++)
{
gp.AddLine(
scale(polyLineSegment.Points[i - 1].X),
scale(polyLineSegment.Points[i - 1].Y),
scale(polyLineSegment.Points[i].X),
scale(polyLineSegment.Points[i].Y));
}
}
startPoint = polyLineSegment.Points.Last();
}
else if (segment is Core2D.XPolyQuadraticBezierSegment)
{
var polyQuadraticSegment = segment as Core2D.XPolyQuadraticBezierSegment;
if (polyQuadraticSegment.Points.Count >= 2)
{
var p1 = startPoint;
var p2 = polyQuadraticSegment.Points[0];
var p3 = polyQuadraticSegment.Points[1];
double x1 = p1.X;
double y1 = p1.Y;
double x2 = p1.X + (2.0 * (p2.X - p1.X)) / 3.0;
double y2 = p1.Y + (2.0 * (p2.Y - p1.Y)) / 3.0;
double x3 = x2 + (p3.X - p1.X) / 3.0;
double y3 = y2 + (p3.Y - p1.Y) / 3.0;
double x4 = p3.X;
double y4 = p3.Y;
gp.AddBezier(
scale(x1 + dx),
scale(y1 + dy),
scale(x2 + dx),
scale(y2 + dy),
scale(x3 + dx),
scale(y3 + dy),
scale(x4 + dx),
scale(y4 + dy));
}
if (polyQuadraticSegment.Points.Count > 2 &&
polyQuadraticSegment.Points.Count % 2 == 0)
{
for (int i = 3; i < polyQuadraticSegment.Points.Count; i += 3)
{
var p1 = polyQuadraticSegment.Points[i - 1];
var p2 = polyQuadraticSegment.Points[i];
var p3 = polyQuadraticSegment.Points[i + 1];
double x1 = p1.X;
double y1 = p1.Y;
double x2 = p1.X + (2.0 * (p2.X - p1.X)) / 3.0;
double y2 = p1.Y + (2.0 * (p2.Y - p1.Y)) / 3.0;
double x3 = x2 + (p3.X - p1.X) / 3.0;
double y3 = y2 + (p3.Y - p1.Y) / 3.0;
double x4 = p3.X;
double y4 = p3.Y;
gp.AddBezier(
scale(x1 + dx),
scale(y1 + dy),
scale(x2 + dx),
scale(y2 + dy),
scale(x3 + dx),
scale(y3 + dy),
scale(x4 + dx),
scale(y4 + dy));
}
}
startPoint = polyQuadraticSegment.Points.Last();
}
else if (segment is Core2D.XQuadraticBezierSegment)
{
var qbezierSegment = segment as Core2D.XQuadraticBezierSegment;
var p1 = startPoint;
var p2 = qbezierSegment.Point1;
var p3 = qbezierSegment.Point2;
double x1 = p1.X;
double y1 = p1.Y;
double x2 = p1.X + (2.0 * (p2.X - p1.X)) / 3.0;
double y2 = p1.Y + (2.0 * (p2.Y - p1.Y)) / 3.0;
double x3 = x2 + (p3.X - p1.X) / 3.0;
double y3 = y2 + (p3.Y - p1.Y) / 3.0;
double x4 = p3.X;
double y4 = p3.Y;
gp.AddBezier(
scale(x1 + dx),
scale(y1 + dy),
scale(x2 + dx),
scale(y2 + dy),
scale(x3 + dx),
scale(y3 + dy),
scale(x4 + dx),
scale(y4 + dy));
startPoint = qbezierSegment.Point2;
}
else
{
throw new NotSupportedException("Not supported segment type: " + segment.GetType());
}
}
if (pf.IsClosed)
{
gp.CloseFigure();
}
else
{
gp.StartFigure();
}
}
return(gp);
}
