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DxfHatch.BoundaryPath.cs
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DxfHatch.BoundaryPath.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using IxMilia.Dxf.Collections;
namespace IxMilia.Dxf.Entities
{
public partial class DxfHatch
{
[Flags]
public enum BoundaryPathType
{
Default = 0,
External = 1,
Polyline = 2,
Derived = 4,
Textbox = 8,
Outermost = 16,
}
public abstract class BoundaryPathBase
{
public List<DxfHandle> BoundaryHandles { get; } = new List<DxfHandle>();
internal virtual void AddValuePairs(List<DxfCodePair> pairs, DxfAcadVersion version, bool outputHandles)
{
pairs.Add(new DxfCodePair(97, BoundaryHandles.Count));
foreach (var handle in BoundaryHandles)
{
pairs.Add(new DxfCodePair(330, HandleString(handle)));
}
}
internal virtual bool TrySetPair(DxfCodePair pair)
{
switch (pair.Code)
{
case 97:
var _boundaryHandleCount = pair.IntegerValue;
break;
case 330:
BoundaryHandles.Add(HandleString(pair.StringValue));
break;
default:
return false;
}
return true;
}
internal static BoundaryPathBase CreateFromType(BoundaryPathType type)
{
if ((type & BoundaryPathType.Polyline) == BoundaryPathType.Polyline)
{
// special polyline case
return new PolylineBoundaryPath();
}
return new NonPolylineBoundaryPath(type);
}
}
public class NonPolylineBoundaryPath : BoundaryPathBase
{
public BoundaryPathType PathType { get; set; }
public IList<BoundaryPathEdgeBase> Edges { get; } = new ListNonNull<BoundaryPathEdgeBase>();
public NonPolylineBoundaryPath(BoundaryPathType pathType)
{
PathType = pathType;
}
internal override void AddValuePairs(List<DxfCodePair> pairs, DxfAcadVersion version, bool outputHandles)
{
pairs.Add(new DxfCodePair(92, (int)PathType));
pairs.Add(new DxfCodePair(93, Edges.Count));
foreach (var edge in Edges)
{
edge.AddValuePairs(pairs, version, outputHandles);
}
base.AddValuePairs(pairs, version, outputHandles);
}
internal override bool TrySetPair(DxfCodePair pair)
{
switch (pair.Code)
{
case 93:
var _edgeCount = pair.IntegerValue;
break;
case 72:
switch (pair.ShortValue)
{
case 1:
Edges.Add(new LineBoundaryPathEdge());
break;
case 2:
Edges.Add(new CircularArcBoundaryPathEdge());
break;
case 3:
Edges.Add(new EllipticArcBoundaryPathEdge());
break;
case 4:
Edges.Add(new SplineBoundaryPathEdge());
break;
default:
return false;
}
break;
default:
if (base.TrySetPair(pair))
{
return true;
}
else
{
if (Edges.Count > 0)
{
return Edges.Last().TrySetPair(pair);
}
return false;
}
}
return true;
}
}
public abstract class BoundaryPathEdgeBase
{
internal abstract void AddValuePairs(List<DxfCodePair> pairs, DxfAcadVersion version, bool outputHandles);
internal abstract bool TrySetPair(DxfCodePair pair);
}
public class LineBoundaryPathEdge : BoundaryPathEdgeBase
{
public DxfPoint StartPoint { get; set; }
public DxfPoint EndPoint { get; set; }
internal override void AddValuePairs(List<DxfCodePair> pairs, DxfAcadVersion version, bool outputHandles)
{
pairs.Add(new DxfCodePair(72, (short)1));
pairs.Add(new DxfCodePair(10, StartPoint.X));
pairs.Add(new DxfCodePair(20, StartPoint.Y));
pairs.Add(new DxfCodePair(11, EndPoint.X));
pairs.Add(new DxfCodePair(21, EndPoint.Y));
}
internal override bool TrySetPair(DxfCodePair pair)
{
switch (pair.Code)
{
case 10:
StartPoint = StartPoint.WithUpdatedX(pair.DoubleValue);
break;
case 20:
StartPoint = StartPoint.WithUpdatedY(pair.DoubleValue);
break;
case 11:
EndPoint = EndPoint.WithUpdatedX(pair.DoubleValue);
break;
case 21:
EndPoint = EndPoint.WithUpdatedY(pair.DoubleValue);
break;
default:
return false;
}
return true;
}
}
public class CircularArcBoundaryPathEdge : BoundaryPathEdgeBase
{
public DxfPoint Center { get; set; }
public double Radius { get; set; }
public double StartAngle { get; set; }
public double EndAngle { get; set; }
public bool IsCounterClockwise { get; set; }
internal override void AddValuePairs(List<DxfCodePair> pairs, DxfAcadVersion version, bool outputHandles)
{
pairs.Add(new DxfCodePair(72, (short)2));
pairs.Add(new DxfCodePair(10, Center.X));
pairs.Add(new DxfCodePair(20, Center.Y));
pairs.Add(new DxfCodePair(40, Radius));
pairs.Add(new DxfCodePair(50, StartAngle));
pairs.Add(new DxfCodePair(51, EndAngle));
pairs.Add(new DxfCodePair(73, BoolShort(IsCounterClockwise)));
}
internal override bool TrySetPair(DxfCodePair pair)
{
switch (pair.Code)
{
case 10:
Center = Center.WithUpdatedX(pair.DoubleValue);
break;
case 20:
Center = Center.WithUpdatedY(pair.DoubleValue);
break;
case 40:
Radius = pair.DoubleValue;
break;
case 50:
StartAngle = pair.DoubleValue;
break;
case 51:
EndAngle = pair.DoubleValue;
break;
case 73:
IsCounterClockwise = BoolShort(pair.ShortValue);
break;
default:
return false;
}
return true;
}
}
public class EllipticArcBoundaryPathEdge : BoundaryPathEdgeBase
{
public DxfPoint Center { get; set; }
public DxfVector MajorAxis { get; set; }
public double MinorAxisRatio { get; set; }
public double StartAngle { get; set; }
public double EndAngle { get; set; }
public bool IsCounterClockwise { get; set; }
internal override void AddValuePairs(List<DxfCodePair> pairs, DxfAcadVersion version, bool outputHandles)
{
pairs.Add(new DxfCodePair(72, (short)3));
pairs.Add(new DxfCodePair(10, Center.X));
pairs.Add(new DxfCodePair(20, Center.Y));
pairs.Add(new DxfCodePair(11, MajorAxis.X));
pairs.Add(new DxfCodePair(21, MajorAxis.Y));
pairs.Add(new DxfCodePair(40, MinorAxisRatio));
pairs.Add(new DxfCodePair(50, StartAngle));
pairs.Add(new DxfCodePair(51, EndAngle));
pairs.Add(new DxfCodePair(73, BoolShort(IsCounterClockwise)));
}
internal override bool TrySetPair(DxfCodePair pair)
{
switch (pair.Code)
{
case 10:
Center = Center.WithUpdatedX(pair.DoubleValue);
break;
case 20:
Center = Center.WithUpdatedY(pair.DoubleValue);
break;
case 11:
MajorAxis = MajorAxis.WithUpdatedX(pair.DoubleValue);
break;
case 21:
MajorAxis = MajorAxis.WithUpdatedY(pair.DoubleValue);
break;
case 40:
MinorAxisRatio = pair.DoubleValue;
break;
case 50:
StartAngle = pair.DoubleValue;
break;
case 51:
EndAngle = pair.DoubleValue;
break;
case 73:
IsCounterClockwise = BoolShort(pair.ShortValue);
break;
default:
return false;
}
return true;
}
}
public class SplineBoundaryPathEdge : BoundaryPathEdgeBase
{
public int Degree { get; set; }
public bool IsRational { get; set; }
public bool IsPeriodic { get; set; }
public IList<double> Knots { get; } = new List<double>();
public IList<DxfControlPoint> ControlPoints { get; } = new List<DxfControlPoint>();
public IList<DxfPoint> FitPoints { get; } = new List<DxfPoint>();
public DxfVector StartTangent { get; set; }
public DxfVector EndTangent { get; set; }
private int _currentWeight = 0;
internal override void AddValuePairs(List<DxfCodePair> pairs, DxfAcadVersion version, bool outputHandles)
{
pairs.Add(new DxfCodePair(72, (short)4));
pairs.Add(new DxfCodePair(94, Degree));
pairs.Add(new DxfCodePair(73, BoolShort(IsRational)));
pairs.Add(new DxfCodePair(74, BoolShort(IsPeriodic)));
pairs.Add(new DxfCodePair(95, Knots.Count));
pairs.Add(new DxfCodePair(96, ControlPoints.Count));
foreach (var item in Knots)
{
pairs.Add(new DxfCodePair(40, item));
}
foreach (var item in ControlPoints)
{
pairs.Add(new DxfCodePair(10, item.Point.X));
pairs.Add(new DxfCodePair(20, item.Point.Y));
}
if (ControlPoints.Any(cp => cp.Weight != 1.0))
{
foreach (var item in ControlPoints)
{
pairs.Add(new DxfCodePair(42, item.Weight));
}
}
pairs.Add(new DxfCodePair(97, FitPoints.Count));
foreach (var item in FitPoints)
{
pairs.Add(new DxfCodePair(11, item.X));
pairs.Add(new DxfCodePair(21, item.Y));
}
pairs.Add(new DxfCodePair(12, StartTangent.X));
pairs.Add(new DxfCodePair(22, StartTangent.Y));
pairs.Add(new DxfCodePair(13, EndTangent.X));
pairs.Add(new DxfCodePair(23, EndTangent.Y));
}
internal override bool TrySetPair(DxfCodePair pair)
{
switch (pair.Code)
{
case 94:
Degree = pair.IntegerValue;
break;
case 73:
IsRational = BoolShort(pair.ShortValue);
break;
case 74:
IsPeriodic = BoolShort(pair.ShortValue);
break;
case 95:
var _knotCount = pair.IntegerValue;
break;
case 96:
var _controlPointCount = pair.IntegerValue;
break;
case 40:
Knots.Add(pair.DoubleValue);
break;
case 10:
ControlPoints.Add(new DxfControlPoint(new DxfPoint(pair.DoubleValue, 0.0, 0.0)));
break;
case 20:
ControlPoints[ControlPoints.Count - 1] = new DxfControlPoint(ControlPoints[ControlPoints.Count - 1].Point.WithUpdatedY(pair.DoubleValue));
break;
case 42:
ControlPoints[_currentWeight] = new DxfControlPoint(ControlPoints[_currentWeight].Point, pair.DoubleValue);
_currentWeight++;
break;
case 97:
var _fitPointCount = pair.IntegerValue;
break;
case 11:
FitPoints.Add(new DxfPoint(pair.DoubleValue, 0.0, 0.0));
break;
case 21:
FitPoints[FitPoints.Count - 1] = FitPoints[FitPoints.Count - 1].WithUpdatedY(pair.DoubleValue);
break;
case 12:
StartTangent = StartTangent.WithUpdatedX(pair.DoubleValue);
break;
case 22:
StartTangent = StartTangent.WithUpdatedY(pair.DoubleValue);
break;
case 13:
EndTangent = EndTangent.WithUpdatedX(pair.DoubleValue);
break;
case 23:
EndTangent = EndTangent.WithUpdatedY(pair.DoubleValue);
break;
default:
return false;
}
return true;
}
}
public class PolylineBoundaryPath : BoundaryPathBase
{
public bool IsClosed { get; set; }
public List<DxfVertex> Vertices { get; } = new List<DxfVertex>();
internal override void AddValuePairs(List<DxfCodePair> pairs, DxfAcadVersion version, bool outputHandles)
{
pairs.Add(new DxfCodePair(92, 2)); // polyline type
pairs.Add(new DxfCodePair(72, BoolShort(Vertices.Any(v => v.Bulge != 0.0))));
pairs.Add(new DxfCodePair(73, BoolShort(IsClosed)));
pairs.Add(new DxfCodePair(93, Vertices.Count));
foreach (var vertex in Vertices)
{
pairs.Add(new DxfCodePair(10, vertex.Location.X));
pairs.Add(new DxfCodePair(20, vertex.Location.Y));
if (vertex.Bulge != 0.0)
{
pairs.Add(new DxfCodePair(42, vertex.Bulge));
}
}
base.AddValuePairs(pairs, version, outputHandles);
}
internal override bool TrySetPair(DxfCodePair pair)
{
switch (pair.Code)
{
case 72:
var _hasBulge = BoolShort(pair.ShortValue);
break;
case 73:
IsClosed = BoolShort(pair.ShortValue);
break;
case 93:
var _vertexCount = pair.IntegerValue;
break;
case 10:
Vertices.Add(new DxfVertex(new DxfPoint(pair.DoubleValue, 0.0, 0.0)));
break;
case 20:
Vertices.Last().Location = Vertices.Last().Location.WithUpdatedY(pair.DoubleValue);
break;
case 42:
Vertices.Last().Bulge = pair.DoubleValue;
break;
default:
return base.TrySetPair(pair);
}
return true;
}
}
}
}