internal override bool TrySetPair(DxfCodePair pair)
{
switch (_readMode)
{
case ReadMode.BoundaryPath:
if (pair.Code == 92)
{
// new boundary path
var pathType = (BoundaryPathType)pair.IntegerValue;
BoundaryPaths.Add(BoundaryPathBase.CreateFromType(pathType));
return(true);
}
if (BoundaryPaths.Last().TrySetPair(pair))
{
return(true);
}
else
{
_readMode = ReadMode.Entity;
break;
}
case ReadMode.PatternData:
if (pair.Code == 53)
{
// new pattern definition line
PatternDefinitionLines.Add(new PatternDefinitionLine());
}
if (PatternDefinitionLines.Last().TrySetPair(pair))
{
return(true);
}
else
{
_readMode = ReadMode.Entity;
break;
}
case ReadMode.SeedPoints:
switch (pair.Code)
{
case 10:
// new seed point
SeedPoints.Add(new DxfPoint(pair.DoubleValue, 0.0, 0.0));
return(true);
case 20:
SeedPoints[SeedPoints.Count - 1] = SeedPoints.Last().WithUpdatedY(pair.DoubleValue);
return(true);
default:
_readMode = ReadMode.Entity;
break;
}
break;
}
switch (pair.Code)
{
case 2:
this.PatternName = pair.StringValue;
break;
case 10:
this.ElevationPoint = this.ElevationPoint.WithUpdatedX(pair.DoubleValue);
break;
case 20:
this.ElevationPoint = this.ElevationPoint.WithUpdatedY(pair.DoubleValue);
break;
case 30:
this.ElevationPoint = this.ElevationPoint.WithUpdatedZ(pair.DoubleValue);
break;
case 41:
this.PatternScale = pair.DoubleValue;
break;
case 47:
this.PixelSize = pair.DoubleValue;
break;
case 52:
this.PatternAngle = pair.DoubleValue;
break;
case 63:
this.FillColor = DxfColor.FromRawValue(pair.ShortValue);
break;
case 70:
this.FillMode = (DxfHatchPatternFillMode)pair.ShortValue;
break;
case 71:
this.IsAssociative = BoolShort(pair.ShortValue);
break;
case 75:
this.HatchStyle = (DxfHatchStyle)pair.ShortValue;
break;
case 76:
this.PatternType = (DxfHatchPatternType)pair.ShortValue;
break;
case 77:
this.IsPatternDoubled = BoolShort(pair.ShortValue);
break;
case 78:
this._patternDefinitionLineCount = pair.ShortValue;
_readMode = ReadMode.PatternData;
break;
case 91:
this._boundaryPathCount = pair.IntegerValue;
_readMode = ReadMode.BoundaryPath;
break;
case 98:
this._seedPointCount = pair.IntegerValue;
_readMode = ReadMode.SeedPoints;
break;
case 210:
this.ExtrusionDirection = this.ExtrusionDirection.WithUpdatedX(pair.DoubleValue);
break;
case 220:
this.ExtrusionDirection = this.ExtrusionDirection.WithUpdatedY(pair.DoubleValue);
break;
case 230:
this.ExtrusionDirection = this.ExtrusionDirection.WithUpdatedZ(pair.DoubleValue);
break;
case 450:
this.IsGradient = BoolInt(pair.IntegerValue);
break;
case 451:
this._zero = pair.IntegerValue;
break;
case 452:
this.GradientColorMode = (DxfGradientColorMode)pair.IntegerValue;
break;
case 453:
this.NumberOfColors = pair.IntegerValue;
break;
case 460:
this.GradientRotationAngle = pair.DoubleValue;
break;
case 461:
this.GradientDefinitionShift = pair.DoubleValue;
break;
case 462:
this.ColorTint = pair.DoubleValue;
break;
case 463:
this._reserved = pair.DoubleValue;
break;
case 470:
this.StringValue = pair.StringValue;
break;
default:
return(base.TrySetPair(pair));
}
return(true);
}
/// <summary>
/// Moves, scales, and/or rotates the current entity given a 3x3 transformation matrix and a translation vector.
/// </summary>
/// <param name="transformation">Transformation matrix.</param>
/// <param name="translation">Translation vector.</param>
public override void TransformBy(Matrix3 transformation, Vector3 translation)
{
Vector3 newNormal;
double newScale;
double newAngle;
newNormal = transformation * Normal;
Matrix3 transOW = MathHelper.ArbitraryAxis(Normal);
Matrix3 transWO = MathHelper.ArbitraryAxis(newNormal).Transpose();
List <HatchBoundaryPath> paths = new List <HatchBoundaryPath>();
foreach (HatchBoundaryPath path in BoundaryPaths)
{
List <EntityObject> data = new List <EntityObject>();
foreach (HatchBoundaryPath.Edge edge in path.Edges)
{
EntityObject entity = edge.ConvertTo();
switch (entity.Type)
{
case EntityType.Arc:
entity = ProcessArc((Arc)entity, transOW, transOW * new Vector3(0.0, 0.0, Elevation));
break;
case EntityType.Circle:
entity = ProcessCircle((Circle)entity, transOW, transOW * new Vector3(0.0, 0.0, Elevation));
break;
case EntityType.Ellipse:
entity = ProcessEllipse((Ellipse)entity, transOW, transOW * new Vector3(0.0, 0.0, Elevation));
break;
case EntityType.Line:
entity = ProcessLine((Line)entity, transOW, transOW * new Vector3(0.0, 0.0, Elevation));
break;
case EntityType.LwPolyline:
entity = ProcessLwPolyline((LwPolyline)entity, Normal, Elevation);
break;
case EntityType.Spline:
entity = ProcessSpline((Spline)entity, transOW, transOW * new Vector3(0.0, 0.0, Elevation));
break;
}
entity.TransformBy(transformation, translation);
data.Add(entity);
}
paths.Add(new HatchBoundaryPath(data));
}
Vector3 position = transOW * new Vector3(0.0, 0.0, Elevation);
position = transformation * position + translation;
position = transWO * position;
Vector2 refAxis = Vector2.Rotate(Vector2.UnitX, Pattern.Angle * MathHelper.DegToRad);
refAxis = Pattern.Scale * refAxis;
Vector3 v = transOW * new Vector3(refAxis.X, refAxis.Y, 0.0);
v = transformation * v;
v = transWO * v;
Vector2 axis = new Vector2(v.X, v.Y);
newAngle = Vector2.Angle(axis) * MathHelper.RadToDeg;
newScale = axis.Modulus();
newScale = MathHelper.IsZero(newScale) ? MathHelper.Epsilon : newScale;
Pattern.Scale = newScale;
Pattern.Angle = newAngle;
Elevation = position.Z;
Normal = newNormal;
BoundaryPaths.Clear();
BoundaryPaths.AddRange(paths);
}
