private static void SetEllipseParameters(netDxf.Entities.Ellipse ellipse, double startparam, double endparam)
{
//CADability: also set the start and end parameter
//ellipse.StartParameter = startparam;
//ellipse.EndParameter = endparam;
if (MathHelper.IsZero(startparam) && MathHelper.IsEqual(endparam, MathHelper.TwoPI))
{
ellipse.StartAngle = 0.0;
ellipse.EndAngle = 0.0;
}
else
{
double a = ellipse.MajorAxis * 0.5;
double b = ellipse.MinorAxis * 0.5;
Vector2 startPoint = new Vector2(a * Math.Cos(startparam), b * Math.Sin(startparam));
Vector2 endPoint = new Vector2(a * Math.Cos(endparam), b * Math.Sin(endparam));
if (Vector2.Equals(startPoint, endPoint))
{
ellipse.StartAngle = 0.0;
ellipse.EndAngle = 0.0;
}
else
{
ellipse.StartAngle = Vector2.Angle(startPoint) * MathHelper.RadToDeg;
ellipse.EndAngle = Vector2.Angle(endPoint) * MathHelper.RadToDeg;
}
}
}
private EntityObject ExportEllipse(GeoObject.Ellipse elli)
{
netDxf.Entities.EntityObject entity = null;
if (elli.IsArc)
{
Plane dxfPlane;
if (elli.CounterClockWise)
{
dxfPlane = Import.Plane(Vector3(elli.Center), Vector3(elli.Plane.Normal));
}
else
{
dxfPlane = Import.Plane(Vector3(elli.Center), Vector3(-elli.Plane.Normal));
}
if (elli.IsCircle)
{
GeoObject.Ellipse aligned = GeoObject.Ellipse.Construct();
aligned.SetArcPlaneCenterStartEndPoint(dxfPlane, dxfPlane.Project(elli.Center), dxfPlane.Project(elli.StartPoint), dxfPlane.Project(elli.EndPoint), dxfPlane, true);
entity = new netDxf.Entities.Arc(Vector3(aligned.Center), aligned.Radius, aligned.StartParameter / Math.PI * 180, (aligned.StartParameter + aligned.SweepParameter) / Math.PI * 180);
entity.Normal = Vector3(dxfPlane.Normal);
}
else
{
netDxf.Entities.Ellipse expelli = new netDxf.Entities.Ellipse(Vector3(elli.Center), 2 * elli.MajorRadius, 2 * elli.MinorRadius);
entity = expelli;
entity.Normal = Vector3(elli.Plane.Normal);
Plane cdbplane = elli.Plane;
GeoVector2D dir = dxfPlane.Project(cdbplane.DirectionX);
SweepAngle rot = new SweepAngle(GeoVector2D.XAxis, dir);
expelli.Rotation = rot.Degree;
SetEllipseParameters(expelli, elli.StartParameter, elli.StartParameter + elli.SweepParameter);
}
}
else
{
if (elli.IsCircle)
{
entity = new netDxf.Entities.Circle(Vector3(elli.Center), elli.Radius);
entity.Normal = Vector3(elli.Plane.Normal);
}
else
{
netDxf.Entities.Ellipse expelli = new netDxf.Entities.Ellipse(Vector3(elli.Center), 2 * elli.MajorRadius, 2 * elli.MinorRadius);
entity = expelli;
entity.Normal = Vector3(elli.Plane.Normal);
Plane dxfplane = Import.Plane(expelli.Center, expelli.Normal); // this plane is not correct, it has to be rotated
Plane cdbplane = elli.Plane;
GeoVector2D dir = dxfplane.Project(cdbplane.DirectionX);
SweepAngle rot = new SweepAngle(GeoVector2D.XAxis, dir);
expelli.Rotation = rot.Degree;
}
}
return(entity);
}
public System.Windows.Shapes.Ellipse GetCanvasEllipse(netDxf.Entities.Ellipse ellipse, Vector3 startVector,
double canvasHeight)
{
var tempEllipse = new System.Windows.Shapes.Ellipse();
tempEllipse.Height = ellipse.MinorAxis;
tempEllipse.Width = ellipse.MajorAxis;
tempEllipse.StrokeThickness = 1;
tempEllipse.Stroke = Brushes.Black;
tempEllipse.SetValue(Canvas.LeftProperty, -ellipse.MajorAxis / 2 + ellipse.Center.X - startVector.X);
tempEllipse.SetValue(Canvas.TopProperty,
-ellipse.MinorAxis / 2 - ellipse.Center.Y + canvasHeight + startVector.Y);
return(tempEllipse);
}
public Ellipse(netDxf.Entities.Ellipse inputEllipse)
{
MaxXMaxY = new Vector3();
MinXMinY = new Vector3();
InputEllipse = inputEllipse;
var a = inputEllipse.MajorAxis / 2;
var b = inputEllipse.MinorAxis / 2;
MinXMinY.X = inputEllipse.Center.X - a;
MinXMinY.Y = inputEllipse.Center.Y - b;
MaxXMaxY.X = inputEllipse.Center.X + a;
MaxXMaxY.Y = inputEllipse.Center.Y + b;
var h = (a - b) / (a + b);
Length = Math.PI * (a + b) * (1 + 3 * h * h / (10 + Math.Sqrt(4 - 3 * h * h)));
}
private Ellipse ReadEllipse(ref CodeValuePair code)
{
var ellipse = new Ellipse();
Vector3d center = Vector3d.Zero;
Vector3d axisPoint = Vector3d.Zero;
Vector3d normal = Vector3d.UnitZ;
float ratio = 0;
Dictionary<ApplicationRegistry, XData> xData = new Dictionary<ApplicationRegistry, XData>();
code = this.ReadCodePair();
while (code.Code != 0)
{
switch (code.Code)
{
case 5:
ellipse.Handle = code.Value;
code = this.ReadCodePair();
break;
case 8: //layer code
ellipse.Layer = this.GetLayer(code.Value);
code = this.ReadCodePair();
break;
case 62: //aci color code
ellipse.Color = new AciColor(short.Parse(code.Value));
code = this.ReadCodePair();
break;
case 6: //type line code
ellipse.LineType = this.GetLineType(code.Value);
code = this.ReadCodePair();
break;
case 10:
center.X = double.Parse(code.Value);
code = this.ReadCodePair();
break;
case 20:
center.Y = double.Parse(code.Value);
code = this.ReadCodePair();
break;
case 30:
center.Z = double.Parse(code.Value);
code = this.ReadCodePair();
break;
case 11:
axisPoint.X = double.Parse(code.Value);
code = this.ReadCodePair();
break;
case 21:
axisPoint.Y = double.Parse(code.Value);
code = this.ReadCodePair();
break;
case 31:
axisPoint.Z = double.Parse(code.Value);
code = this.ReadCodePair();
break;
case 40:
ratio = float.Parse(code.Value);
code = this.ReadCodePair();
break;
case 41:
ellipse.StartAngle = double.Parse(code.Value)*MathHelper.RadToDeg;
code = this.ReadCodePair();
break;
case 42:
ellipse.EndAngle = double.Parse(code.Value)*MathHelper.RadToDeg;
code = this.ReadCodePair();
break;
case 210:
normal.X = double.Parse(code.Value);
code = this.ReadCodePair();
break;
case 220:
normal.Y = double.Parse(code.Value);
code = this.ReadCodePair();
break;
case 230:
normal.Z = double.Parse(code.Value);
code = this.ReadCodePair();
break;
case 1001:
XData xDataItem = this.ReadXDataRecord(code.Value, ref code);
xData.Add(xDataItem.ApplicationRegistry, xDataItem);
break;
default:
if (code.Code >= 1000 && code.Code <= 1071)
throw new DxfInvalidCodeValueEntityException(code.Code, code.Value, this.file,
"The extended data of an entity must start with the application registry code " + this.fileLine);
code = this.ReadCodePair();
break;
}
}
Vector3d ocsAxisPoint = MathHelper.Transform((Vector3d) axisPoint,
(Vector3d) normal,
MathHelper.CoordinateSystem.World,
MathHelper.CoordinateSystem.Object);
double rotation = Vector2d.AngleBetween(Vector2d.UnitX, new Vector2d(ocsAxisPoint.X, ocsAxisPoint.Y));
ellipse.MajorAxis = 2*axisPoint.Modulus();
ellipse.MinorAxis = ellipse.MajorAxis*ratio;
ellipse.Rotation = rotation*MathHelper.RadToDeg;
ellipse.Center = center;
ellipse.Normal = normal;
ellipse.XData = xData;
return ellipse;
}
private void WriteEllipse(Ellipse ellipse)
{
this.chunk.Write(100, SubclassMarker.Ellipse);
this.chunk.Write(10, ellipse.Center.X);
this.chunk.Write(20, ellipse.Center.Y);
this.chunk.Write(30, ellipse.Center.Z);
double sine = 0.5*ellipse.MajorAxis*Math.Sin(ellipse.Rotation*MathHelper.DegToRad);
double cosine = 0.5*ellipse.MajorAxis*Math.Cos(ellipse.Rotation*MathHelper.DegToRad);
Vector3 axisPoint = MathHelper.Transform(new Vector3(cosine, sine, 0),
ellipse.Normal,
CoordinateSystem.Object,
CoordinateSystem.World);
this.chunk.Write(11, axisPoint.X);
this.chunk.Write(21, axisPoint.Y);
this.chunk.Write(31, axisPoint.Z);
this.chunk.Write(210, ellipse.Normal.X);
this.chunk.Write(220, ellipse.Normal.Y);
this.chunk.Write(230, ellipse.Normal.Z);
this.chunk.Write(40, ellipse.MinorAxis/ellipse.MajorAxis);
double[] paramaters = this.GetEllipseParameters(ellipse);
this.chunk.Write(41, paramaters[0]);
this.chunk.Write(42, paramaters[1]);
this.WriteXData(ellipse.XData);
}
private void WriteEllipse(Ellipse ellipse)
{
if (this.activeSection != StringCode.EntitiesSection && !this.isBlockEntities)
{
throw new InvalidDxfSectionException(this.activeSection, this.file);
}
if (this.version == DxfVersion.AutoCad12)
{
this.WriteEllipseAsPolyline(ellipse);
return;
}
this.WriteCodePair(0, ellipse.CodeName);
this.WriteCodePair(5, ellipse.Handle);
this.WriteCodePair(100, SubclassMarker.Entity);
this.WriteEntityCommonCodes(ellipse);
this.WriteCodePair(100, SubclassMarker.Ellipse);
this.WriteCodePair(10, ellipse.Center.X);
this.WriteCodePair(20, ellipse.Center.Y);
this.WriteCodePair(30, ellipse.Center.Z);
double sine = (0.5 * ellipse.MajorAxis * Math.Sin(ellipse.Rotation * MathHelper.DegToRad));
double cosine = (0.5 * ellipse.MajorAxis * Math.Cos(ellipse.Rotation * MathHelper.DegToRad));
Vector3d axisPoint = MathHelper.Transform(new Vector3d(cosine, sine, 0),
ellipse.Normal,
MathHelper.CoordinateSystem.Object,
MathHelper.CoordinateSystem.World);
this.WriteCodePair(11, axisPoint.X);
this.WriteCodePair(21, axisPoint.Y);
this.WriteCodePair(31, axisPoint.Z);
this.WriteCodePair(210, ellipse.Normal.X);
this.WriteCodePair(220, ellipse.Normal.Y);
this.WriteCodePair(230, ellipse.Normal.Z);
this.WriteCodePair(40, ellipse.MinorAxis/ellipse.MajorAxis);
this.WriteCodePair(41, ellipse.StartAngle*MathHelper.DegToRad);
this.WriteCodePair(42, ellipse.EndAngle*MathHelper.DegToRad);
this.WriteXData(ellipse.XData);
}
public override object Clone()
{
Ellipse copy = new Ellipse
{
Center = this.Center,
EndMajorAxis = this.EndMajorAxis,
MinorRatio = this.MinorRatio,
StartAngle = this.StartAngle,
EndAngle = this.EndAngle,
IsCounterclockwise = this.IsCounterclockwise
};
return copy;
}
private static void SetEllipseParameters(Ellipse ellipse, double[] param)
{
if (MathHelper.IsZero(param[0]) && MathHelper.IsEqual(param[1], MathHelper.TwoPI))
{
ellipse.StartAngle = 0.0;
ellipse.EndAngle = 0.0;
}
else
{
double a = ellipse.MajorAxis*0.5;
double b = ellipse.MinorAxis*0.5;
Vector2 startPoint = new Vector2(a*Math.Cos(param[0]), b*Math.Sin(param[0]));
Vector2 endPoint = new Vector2(a*Math.Cos(param[1]), b*Math.Sin(param[1]));
if (Equals(startPoint, endPoint))
{
ellipse.StartAngle = 0.0;
ellipse.EndAngle = 0.0;
}
else
{
ellipse.StartAngle = Vector2.Angle(startPoint)*MathHelper.RadToDeg;
ellipse.EndAngle = Vector2.Angle(endPoint)*MathHelper.RadToDeg;
}
}
}
private static Ellipse ProcessEllipse(Ellipse ellipse, Matrix3 trans, Vector3 pos)
{
ellipse.Center = trans * ellipse.Center + pos;
ellipse.Normal = trans * ellipse.Normal;
return(ellipse);
}
private void SetEllipseParameters(Ellipse ellipse, double[] param)
{
double a = ellipse.MajorAxis*0.5;
double b = ellipse.MinorAxis*0.5;
Vector2 startPoint = new Vector2(a * Math.Cos(param[0]), b * Math.Sin(param[0]));
Vector2 endPoint = new Vector2(a * Math.Cos(param[1]), b * Math.Sin(param[1]));
// trigonometry functions are very prone to round off errors
if (startPoint.Equals(endPoint))
{
ellipse.StartAngle = 0.0;
ellipse.EndAngle = 360.0;
}
else
{
ellipse.StartAngle = Vector2.Angle(startPoint) * MathHelper.RadToDeg;
ellipse.EndAngle = Vector2.Angle(endPoint) * MathHelper.RadToDeg;
}
}
private void SetInternalInfo(IEnumerable <EntityObject> entities)
{
bool containsPolyline = false;
edges.Clear();
foreach (EntityObject entity in entities)
{
if (containsPolyline)
{
throw new ArgumentException("Closed polylines cannot be combined with other entities to make a hatch boundary path.");
}
// it seems that AutoCad does not have problems on creating loops that theoretically does not make sense,
// like, for example, an internal loop that is made of a single arc.
// so if AutoCAD is OK with that I am too, the program that make use of this information will take care of this inconsistencies
switch (entity.Type)
{
case EntityType.Arc:
edges.Add(Arc.ConvertFrom(entity));
break;
case EntityType.Circle:
edges.Add(Arc.ConvertFrom(entity));
break;
case EntityType.Ellipse:
edges.Add(Ellipse.ConvertFrom(entity));
break;
case EntityType.Line:
edges.Add(Line.ConvertFrom(entity));
break;
case EntityType.LwPolyline:
LwPolyline lwpoly = (LwPolyline)entity;
if (lwpoly.IsClosed)
{
if (edges.Count != 0)
{
throw new ArgumentException("Closed polylines cannot be combined with other entities to make a hatch boundary path.");
}
edges.Add(Polyline.ConvertFrom(entity));
pathType |= HatchBoundaryPathTypeFlags.Polyline;
containsPolyline = true;
}
else
{
SetInternalInfo(lwpoly.Explode()); // open polylines will always be exploded, only one polyline can be present in a path
}
break;
case EntityType.Polyline:
Entities.Polyline poly = (Entities.Polyline)entity;
if (poly.IsClosed)
{
if (edges.Count != 0)
{
throw new ArgumentException("Closed polylines cannot be combined with other entities to make a hatch boundary path.");
}
edges.Add(Polyline.ConvertFrom(entity));
pathType |= HatchBoundaryPathTypeFlags.Polyline;
containsPolyline = true;
}
else
{
SetInternalInfo(poly.Explode()); // open polylines will always be exploded, only one polyline can be present in a path
}
break;
case EntityType.Spline:
edges.Add(Spline.ConvertFrom(entity));
break;
default:
throw new ArgumentException(string.Format("The entity type {0} cannot be part of a hatch boundary. Only Arc, Circle, Ellipse, Line, LwPolyline, and Spline entities are allowed.", entity.Type));
}
}
}
private void FillEllipse(DxfDocument dxf, Layer layer, Ellipse dxfEllipse, Core2D.Style.ArgbColor color)
{
var fill = ToColor(color);
var fillTransparency = ToTransparency(color);
// TODO: The netDxf does not create hatch for Ellipse with end angle equal to 360.
var bounds =
new List<HatchBoundaryPath>
{
new HatchBoundaryPath(
new List<EntityObject>
{
(Ellipse)dxfEllipse.Clone()
})
};
var hatch = new Hatch(HatchPattern.Solid, bounds, false);
hatch.Layer = layer;
hatch.Color = fill;
hatch.Transparency.Value = fillTransparency;
dxf.AddEntity(hatch);
}
private void StrokeEllipse(DxfDocument dxf, Layer layer, Ellipse dxfEllipse, Core2D.Style.ArgbColor color, double thickness)
{
var stroke = ToColor(color);
var strokeTansparency = ToTransparency(color);
var lineweight = ToLineweight(thickness);
dxfEllipse.Layer = layer;
dxfEllipse.Color = stroke;
dxfEllipse.Transparency.Value = strokeTansparency;
dxfEllipse.Lineweight = lineweight;
dxf.AddEntity(dxfEllipse);
}
private void SetInternalInfo(IList <EntityObject> entities)
{
bool containsClosedPolyline = false;
this.edges.Clear();
foreach (EntityObject entity in entities)
{
if ((this.pathTypeFlag & HatchBoundaryPathTypeFlags.Polyline) == HatchBoundaryPathTypeFlags.Polyline)
{
if (this.edges.Count >= 1)
{
throw new ArgumentException("Closed polylines cannot be combined with other entities to make a hatch boundary path.");
}
}
// it seems that AutoCad does not have problems on creating loops that theoretically does not make sense, like, for example an internal loop that is made of a single arc.
// so if AutoCAD is ok with that I am too, the program that make use of this information will take care of this inconsistencies
switch (entity.Type)
{
case EntityType.Arc:
if (containsClosedPolyline)
{
throw new ArgumentException("Closed polylines cannot be combined with other entities to make a hatch boundary path.");
}
this.edges.Add(Arc.ConvertFrom(entity));
break;
case EntityType.Circle:
if (containsClosedPolyline)
{
throw new ArgumentException("Closed polylines cannot be combined with other entities to make a hatch boundary path.");
}
this.edges.Add(Arc.ConvertFrom(entity));
break;
case EntityType.Ellipse:
if (containsClosedPolyline)
{
throw new ArgumentException("Closed polylines cannot be combined with other entities to make a hatch boundary path.");
}
this.edges.Add(Ellipse.ConvertFrom(entity));
break;
case EntityType.Line:
if (containsClosedPolyline)
{
throw new ArgumentException("Closed polylines cannot be combined with other entities to make a hatch boundary path.");
}
this.edges.Add(Line.ConvertFrom(entity));
break;
case EntityType.LightWeightPolyline:
if (containsClosedPolyline)
{
throw new ArgumentException("Closed polylines cannot be combined with other entities to make a hatch boundary path.");
}
LwPolyline poly = (LwPolyline)entity;
if (poly.IsClosed)
{
this.edges.Add(Polyline.ConvertFrom(entity)); // A polyline HatchBoundaryPath must be closed
this.pathTypeFlag |= HatchBoundaryPathTypeFlags.Polyline;
containsClosedPolyline = true;
}
else
{
this.SetInternalInfo(poly.Explode()); // open polylines will always be exploded, only one polyline can be present in a path
}
break;
case EntityType.Spline:
if (containsClosedPolyline)
{
throw new ArgumentException("Closed polylines cannot be combined with other entities to make a hatch boundary path.");
}
this.edges.Add(Spline.ConvertFrom(entity));
break;
default:
throw new ArgumentException(string.Format("The entity type {0} cannot be part of a hatch boundary.", entity.Type));
}
}
}
/// <summary>
/// Explodes the current insert.
/// </summary>
/// <returns>A list of entities.</returns>
public List <EntityObject> Explode()
{
List <EntityObject> entities = new List <EntityObject>();
Matrix3 transformation = this.GetTransformation();
Vector3 translation = this.Position - transformation * this.block.Origin;
foreach (EntityObject entity in this.block.Entities)
{
Vector3 localScale = MathHelper.Transform(this.Scale, entity.Normal, CoordinateSystem.World, CoordinateSystem.Object);
bool isUniformScale = MathHelper.IsEqual(localScale.X, localScale.Y);
// entities with reactors are associated with other entities they will handle the transformation
if (entity.Reactors.Count > 0)
{
continue;
}
if (!isUniformScale)
{
switch (entity.Type)
{
case EntityType.Circle:
{
Circle circle = (Circle)entity;
Ellipse ellipse = new Ellipse
{
//EntityObject properties
Layer = (Layer)entity.Layer.Clone(),
Linetype = (Linetype)entity.Linetype.Clone(),
Color = (AciColor)entity.Color.Clone(),
Lineweight = entity.Lineweight,
Transparency = (Transparency)entity.Transparency.Clone(),
LinetypeScale = entity.LinetypeScale,
Normal = entity.Normal,
IsVisible = entity.IsVisible,
//Ellipse properties
Center = circle.Center,
MajorAxis = 2 * circle.Radius,
MinorAxis = 2 * circle.Radius,
Thickness = circle.Thickness
};
ellipse.TransformBy(transformation, translation);
entities.Add(ellipse);
break;
}
case EntityType.Arc:
{
Arc arc = (Arc)entity;
Ellipse ellipse = new Ellipse
{
//EntityObject properties
Layer = (Layer)entity.Layer.Clone(),
Linetype = (Linetype)entity.Linetype.Clone(),
Color = (AciColor)entity.Color.Clone(),
Lineweight = entity.Lineweight,
Transparency = (Transparency)entity.Transparency.Clone(),
LinetypeScale = entity.LinetypeScale,
Normal = entity.Normal,
IsVisible = entity.IsVisible,
//Ellipse properties
Center = arc.Center,
MajorAxis = 2 * arc.Radius,
MinorAxis = 2 * arc.Radius,
StartAngle = arc.StartAngle,
EndAngle = arc.EndAngle,
Thickness = arc.Thickness
};
ellipse.TransformBy(transformation, translation);
entities.Add(ellipse);
break;
}
case EntityType.LwPolyline:
{
List <EntityObject> newEntities = ((LwPolyline)entity).Explode();
foreach (EntityObject newEntity in newEntities)
{
if (newEntity.Type == EntityType.Arc)
{
Arc arc = (Arc)newEntity;
Ellipse ellipse = new Ellipse
{
//EntityObject properties
Layer = (Layer)entity.Layer.Clone(),
Linetype = (Linetype)entity.Linetype.Clone(),
Color = (AciColor)entity.Color.Clone(),
Lineweight = entity.Lineweight,
Transparency = (Transparency)entity.Transparency.Clone(),
LinetypeScale = entity.LinetypeScale,
Normal = entity.Normal,
IsVisible = entity.IsVisible,
//Ellipse properties
Center = arc.Center,
MajorAxis = 2 * arc.Radius,
MinorAxis = 2 * arc.Radius,
StartAngle = arc.StartAngle,
EndAngle = arc.EndAngle,
Thickness = arc.Thickness
};
ellipse.TransformBy(transformation, translation);
entities.Add(ellipse);
}
else
{
newEntity.TransformBy(transformation, translation);
entities.Add(newEntity);
}
}
break;
}
case EntityType.MLine:
{
List <EntityObject> newEntities = ((MLine)entity).Explode();
foreach (EntityObject newEntity in newEntities)
{
if (newEntity.Type == EntityType.Arc)
{
Arc arc = (Arc)newEntity;
Ellipse ellipse = new Ellipse
{
//EntityObject properties
Layer = (Layer)entity.Layer.Clone(),
Linetype = (Linetype)entity.Linetype.Clone(),
Color = (AciColor)entity.Color.Clone(),
Lineweight = entity.Lineweight,
Transparency = (Transparency)entity.Transparency.Clone(),
LinetypeScale = entity.LinetypeScale,
Normal = entity.Normal,
IsVisible = entity.IsVisible,
//Ellipse properties
Center = arc.Center,
MajorAxis = 2 * arc.Radius,
MinorAxis = 2 * arc.Radius,
StartAngle = arc.StartAngle,
EndAngle = arc.EndAngle,
Thickness = arc.Thickness
};
ellipse.TransformBy(transformation, translation);
entities.Add(ellipse);
}
else
{
newEntity.TransformBy(transformation, translation);
entities.Add(newEntity);
}
}
break;
}
default:
{
EntityObject newEntity = (EntityObject)entity.Clone();
newEntity.TransformBy(transformation, translation);
entities.Add(newEntity);
break;
}
}
}
else
{
EntityObject newEntity = (EntityObject)entity.Clone();
newEntity.TransformBy(transformation, translation);
entities.Add(newEntity);
}
}
foreach (Attribute attribute in this.attributes)
{
// the attributes will be exploded as a Text entity
Text text = new Text
{
//Attribute properties
Layer = (Layer)attribute.Layer.Clone(),
Linetype = (Linetype)attribute.Linetype.Clone(),
Color = (AciColor)attribute.Color.Clone(),
Lineweight = attribute.Lineweight,
Transparency = (Transparency)attribute.Transparency.Clone(),
LinetypeScale = attribute.LinetypeScale,
Normal = attribute.Normal,
IsVisible = attribute.IsVisible,
Height = attribute.Height,
WidthFactor = attribute.WidthFactor,
ObliqueAngle = attribute.ObliqueAngle,
Value = attribute.Value,
Style = (TextStyle)attribute.Style.Clone(),
Position = attribute.Position,
Rotation = attribute.Rotation,
Alignment = attribute.Alignment,
IsBackward = attribute.IsBackward,
IsUpsideDown = attribute.IsUpsideDown
};
entities.Add(text);
}
return(entities);
}
/// <summary>
/// Explodes the current insert.
/// </summary>
/// <returns>A list of entities.</returns>
/// <remarks>
/// Non-uniform scaling is not supported by all entities. Read the documentation of the entities TranformBy method.
/// </remarks>
public List <EntityObject> Explode()
{
bool isUniformScale = MathHelper.IsEqual(this.scale.X, this.scale.Y) &&
MathHelper.IsEqual(this.scale.Y, this.scale.Z);
List <EntityObject> entities = new List <EntityObject>();
Matrix3 transformation = this.GetTransformation(this.Owner == null ? DrawingUnits.Unitless : this.Block.Record.Owner.Owner.DrawingVariables.InsUnits);
Vector3 translation = this.Position - transformation * this.block.Origin;
foreach (EntityObject entity in this.block.Entities)
{
// TODO: entities with no implemented TransformBy method
if (entity.Type == EntityType.Viewport)
{
continue;
}
// entities with reactors are associated with other entities they will handle the transformation
if (entity.Reactors.Count > 0)
{
continue;
}
if (!isUniformScale)
{
switch (entity.Type)
{
case EntityType.Circle:
{
Circle circle = (Circle)entity;
Ellipse ellipse = new Ellipse
{
//EntityObject properties
Layer = (Layer)entity.Layer.Clone(),
Linetype = (Linetype)entity.Linetype.Clone(),
Color = (AciColor)entity.Color.Clone(),
Lineweight = entity.Lineweight,
Transparency = (Transparency)entity.Transparency.Clone(),
LinetypeScale = entity.LinetypeScale,
Normal = entity.Normal,
IsVisible = entity.IsVisible,
//Ellipse properties
Center = circle.Center,
MajorAxis = 2 * circle.Radius,
MinorAxis = 2 * circle.Radius,
Thickness = circle.Thickness
};
foreach (XData data in this.XData.Values)
{
entity.XData.Add((XData)data.Clone());
}
ellipse.TransformBy(transformation, translation);
entities.Add(ellipse);
break;
}
case EntityType.Arc:
{
Arc arc = (Arc)entity;
Ellipse ellipse = new Ellipse
{
//EntityObject properties
Layer = (Layer)entity.Layer.Clone(),
Linetype = (Linetype)entity.Linetype.Clone(),
Color = (AciColor)entity.Color.Clone(),
Lineweight = entity.Lineweight,
Transparency = (Transparency)entity.Transparency.Clone(),
LinetypeScale = entity.LinetypeScale,
Normal = entity.Normal,
IsVisible = entity.IsVisible,
//Ellipse properties
Center = arc.Center,
MajorAxis = 2 * arc.Radius,
MinorAxis = 2 * arc.Radius,
StartAngle = arc.StartAngle,
EndAngle = arc.EndAngle,
Thickness = arc.Thickness
};
ellipse.TransformBy(transformation, translation);
entities.Add(ellipse);
break;
}
case EntityType.LwPolyline:
{
List <EntityObject> newEntities = ((LwPolyline)entity).Explode();
foreach (EntityObject newEntity in newEntities)
{
newEntity.TransformBy(transformation, translation);
entities.Add(newEntity);
}
break;
}
case EntityType.MLine:
{
List <EntityObject> newEntities = ((MLine)entity).Explode();
foreach (EntityObject newEntity in newEntities)
{
newEntity.TransformBy(transformation, translation);
entities.Add(newEntity);
}
break;
}
default:
{
EntityObject newEntity = (EntityObject)entity.Clone();
newEntity.TransformBy(transformation, translation);
entities.Add(newEntity);
break;
}
}
}
else
{
EntityObject newEntity = (EntityObject)entity.Clone();
newEntity.TransformBy(transformation, translation);
entities.Add(newEntity);
}
}
return(entities);
}
private Ellipse ReadEllipse()
{
Vector3 center = Vector3.Zero;
Vector3 axisPoint = Vector3.Zero;
Vector3 normal = Vector3.UnitZ;
double[] param = new double[2];
double ratio = 0.0;
List<XData> xData = new List<XData>();
this.chunk.Next();
while (this.chunk.Code != 0)
{
switch (this.chunk.Code)
{
case 10:
center.X = this.chunk.ReadDouble();
this.chunk.Next();
break;
case 20:
center.Y = this.chunk.ReadDouble();
this.chunk.Next();
break;
case 30:
center.Z = this.chunk.ReadDouble();
this.chunk.Next();
break;
case 11:
axisPoint.X = this.chunk.ReadDouble();
this.chunk.Next();
break;
case 21:
axisPoint.Y = this.chunk.ReadDouble();
this.chunk.Next();
break;
case 31:
axisPoint.Z = this.chunk.ReadDouble();
this.chunk.Next();
break;
case 40:
ratio = this.chunk.ReadDouble();
this.chunk.Next();
break;
case 41:
param[0] = this.chunk.ReadDouble();
this.chunk.Next();
break;
case 42:
param[1] = this.chunk.ReadDouble();
this.chunk.Next();
break;
case 210:
normal.X = this.chunk.ReadDouble();
this.chunk.Next();
break;
case 220:
normal.Y = this.chunk.ReadDouble();
this.chunk.Next();
break;
case 230:
normal.Z = this.chunk.ReadDouble();
this.chunk.Next();
break;
case 1001:
string appId = this.DecodeEncodedNonAsciiCharacters(this.chunk.ReadString());
XData data = this.ReadXDataRecord(this.GetApplicationRegistry(appId));
xData.Add(data);
break;
default:
if (this.chunk.Code >= 1000 && this.chunk.Code <= 1071)
throw new Exception("The extended data of an entity must start with the application registry code.");
this.chunk.Next();
break;
}
}
Vector3 ocsAxisPoint = MathHelper.Transform(axisPoint, normal, CoordinateSystem.World, CoordinateSystem.Object);
double rotation = Vector2.Angle(new Vector2(ocsAxisPoint.X, ocsAxisPoint.Y));
double majorAxis = 2*axisPoint.Modulus();
double minorAxis = majorAxis*ratio;
Ellipse ellipse = new Ellipse
{
MajorAxis = majorAxis,
MinorAxis = minorAxis,
Rotation = rotation*MathHelper.RadToDeg,
Center = center,
Normal = normal
};
ellipse.XData.AddRange(xData);
SetEllipseParameters(ellipse, param);
return ellipse;
}
private static void PaperSpace()
{
// Sample on how to work with Layouts
DxfDocument dxf = new DxfDocument();
// A new DxfDocument will create the default "Model" layout that is associated with the ModelSpace block. This layout cannot be erased or renamed.
Line line = new Line(new Vector2(0), new Vector2(100));
// The line will be added to the "Model" layout since this is the active one by default.
dxf.AddEntity(line);
// Create a new Layout, all new layouts will be associated with different PaperSpace blocks,
// while there can be only one ModelSpace multiple PaperSpace blocks might exist in the document
Layout layout1 = new Layout("Layout1");
// When the layout is added to the list, a new PaperSpace block will be created automatically
dxf.Layouts.Add(layout1);
// Set this new Layout as the active one. All entities will now be added to this layout.
dxf.ActiveLayout = layout1.Name;
// Create a viewport, this is the window to the ModelSpace
Viewport viewport1 = new Viewport
{
Width = 100,
Height = 100,
Center = new Vector3(50, 50, 0),
};
// Add it to the "Layout1" since this is the active one
dxf.AddEntity(viewport1);
// Also add a circle
Circle circle = new Circle(new Vector2(150), 25);
dxf.AddEntity(circle);
// Create a second Layout, add it to the list, and set it as the active one.
Layout layout2 = new Layout("Layout2");
dxf.Layouts.Add(layout2);
dxf.ActiveLayout = layout2.Name;
// viewports might have a non rectangular boundary, in this case we will use an ellipse.
Ellipse ellipse = new Ellipse(new Vector2(100), 200, 150);
Viewport viewport2 = new Viewport
{
ClippingBoundary = ellipse,
};
// Add the viewport to the document. This will also add the ellipse to the document.
dxf.AddEntity(viewport2);
Layout layout3 = new Layout("AnyName");
dxf.Layouts.Add(layout3);
//layout can also be renamed
layout3.Name = "Layout3";
//dxf.Layouts.Remove(layout2.Name);
ShowDxfDocumentInformation(dxf);
// Save the document as always.
dxf.Save("PaperSpace.dxf");
#region CAUTION - This is subject to change in the future, use it with care
// You cannot directly remove the ellipse from the document since it has been attached to a viewport
bool ok = dxf.RemoveEntity(ellipse); // OK = false
// If an entity has been attached to another, its reactor will point to its owner
// This information is subject to change in the future to become a list, an entity can be attached to multiple objects;
// but at the moment only the viewport clipping boundary make use of this.
// This is the way AutoCad also handles hatch and dimension associativity, that I might implement in the future
DxfObject reactor = ellipse.Reactors[0]; // in this case reactor points to viewport2
// You need to delete the viewport instead. This deletes the viewport and the ellipse
//dxf.RemoveEntity(viewport2);
// another way of deleting the ellipse, is first to assign another clipping boundary to the viewport or just set it to null
viewport2.ClippingBoundary = null;
// now it will be possible to delete the ellipse. This will not delete the viewport.
ok = dxf.RemoveEntity(ellipse); // OK = true
// Save the document if you want to test the changes
dxf.Save("PaperSpace.dxf");
#endregion
DxfDocument dxfLoad = DxfDocument.Load("PaperSpace.dxf");
// For every entity you can check its layout
// The entity Owner will return the block to which it belongs, it can be a *Model_Space, *Paper_Space, ... or a common block if the entity is part of its geometry.
// The block record stores information about the block and one of them is the layout, this mimics the way the dxf stores this information.
// Remember only the internal blocks *Model_Space, *Paper_Space, *Paper_Space0, *Paper_Space1, ... have an associated layout,
// all other blocks will return null is asked for block.Record.Layout
Layout associatedLayout = dxfLoad.Lines[0].Owner.Record.Layout;
// or you can get the complete list of entities of a layout
foreach (Layout layout in dxfLoad.Layouts)
{
List<DxfObject> entities = dxfLoad.Layouts.GetReferences(layout.Name);
}
// You can also remove any layout from the list, except the "Model".
// Remember all entities that has been added to this layout will also be removed.
// This mimics the behavior in AutoCad, when a layout is deleted all entities in it will also be deleted.
dxfLoad.Layouts.Remove(layout1.Name);
Layout layout4 = (Layout) layout2.Clone("Layout4");
dxfLoad.Layouts.Add(layout4);
ShowDxfDocumentInformation(dxfLoad);
dxfLoad.Save("PaperSpace removed.dxf");
}
private static Ellipse ProcessEllipse(Ellipse ellipse, Matrix3 trans, Vector3 pos)
{
ellipse.Center = trans*ellipse.Center + pos;
ellipse.Normal = trans*ellipse.Normal;
return ellipse;
}
private static void CheckReferences()
{
DxfDocument dxf = new DxfDocument();
Layer layer1 = new Layer("Layer1");
layer1.Color = AciColor.Blue;
layer1.LineType = LineType.Center;
Layer layer2 = new Layer("Layer2");
layer2.Color = AciColor.Red;
LwPolyline poly = new LwPolyline();
poly.Vertexes.Add(new LwPolylineVertex(0, 0));
poly.Vertexes.Add(new LwPolylineVertex(10, 10));
poly.Vertexes.Add(new LwPolylineVertex(20, 0));
poly.Vertexes.Add(new LwPolylineVertex(30, 10));
poly.Layer = layer1;
dxf.AddEntity(poly);
Ellipse ellipse = new Ellipse(new Vector3(2, 2, 0), 5, 3);
ellipse.Rotation = 30;
ellipse.Layer = layer1;
dxf.AddEntity(ellipse);
Line line = new Line(new Vector2(10, 5), new Vector2(-10, -5));
line.Layer = layer2;
line.LineType = LineType.DashDot;
dxf.AddEntity(line);
dxf.Save("test.dxf");
dxf = DxfDocument.Load("sample.dxf");
foreach (ApplicationRegistry registry in dxf.ApplicationRegistries)
{
foreach (DxfObject o in dxf.ApplicationRegistries.GetReferences(registry))
{
if (o is EntityObject)
{
foreach (KeyValuePair<string, XData> data in ((EntityObject)o).XData)
{
if (data.Key == registry.Name)
if (!ReferenceEquals(registry, data.Value.ApplicationRegistry))
Console.WriteLine("Application registry {0} not equal entity to {1}", registry.Name, o.CodeName);
}
}
}
}
foreach (Block block in dxf.Blocks)
{
foreach (DxfObject o in dxf.Blocks.GetReferences(block))
{
if (o is Insert)
if (!ReferenceEquals(block, ((Insert)o).Block))
Console.WriteLine("Block {0} not equal entity to {1}", block.Name, o.CodeName);
}
}
foreach (ImageDefinition def in dxf.ImageDefinitions)
{
foreach (DxfObject o in dxf.ImageDefinitions.GetReferences(def))
{
if (o is Image)
if (!ReferenceEquals(def, ((Image)o).Definition))
Console.WriteLine("Image definition {0} not equal entity to {1}", def.Name, o.CodeName);
}
}
foreach (DimensionStyle dimStyle in dxf.DimensionStyles)
{
foreach (DxfObject o in dxf.DimensionStyles.GetReferences(dimStyle))
{
if (o is Dimension)
if (!ReferenceEquals(dimStyle, ((Dimension)o).Style))
Console.WriteLine("Dimension style {0} not equal entity to {1}", dimStyle.Name, o.CodeName);
}
}
foreach (Group g in dxf.Groups)
{
foreach (DxfObject o in dxf.Groups.GetReferences(g))
{
// no references
}
}
foreach (UCS u in dxf.UCSs)
{
foreach (DxfObject o in dxf.UCSs.GetReferences(u))
{
}
}
foreach (TextStyle style in dxf.TextStyles)
{
foreach (DxfObject o in dxf.TextStyles.GetReferences(style))
{
if (o is Text)
if (!ReferenceEquals(style, ((Text)o).Style))
Console.WriteLine("Text style {0} not equal entity to {1}", style.Name, o.CodeName);
if (o is MText)
if (!ReferenceEquals(style, ((MText)o).Style))
Console.WriteLine("Text style {0} not equal entity to {1}", style.Name, o.CodeName);
if (o is DimensionStyle)
if (!ReferenceEquals(style, ((DimensionStyle)o).DIMTXSTY))
Console.WriteLine("Text style {0} not equal entity to {1}", style.Name, o.CodeName);
}
}
foreach (Layer layer in dxf.Layers)
{
foreach (DxfObject o in dxf.Layers.GetReferences(layer))
{
if (o is Block)
if (!ReferenceEquals(layer, ((Block)o).Layer))
Console.WriteLine("Layer {0} not equal entity to {1}", layer.Name, o.CodeName);
if (o is EntityObject)
if (!ReferenceEquals(layer, ((EntityObject)o).Layer))
Console.WriteLine("Layer {0} not equal entity to {1}", layer.Name, o.CodeName);
}
}
foreach (LineType lType in dxf.LineTypes)
{
foreach (DxfObject o in dxf.LineTypes.GetReferences(lType))
{
if (o is Layer)
if (!ReferenceEquals(lType, ((Layer)o).LineType))
Console.WriteLine("Line type {0} not equal to {1}", lType.Name, o.CodeName);
if (o is MLineStyle)
{
foreach (MLineStyleElement e in ((MLineStyle)o).Elements)
{
if (!ReferenceEquals(lType, e.LineType))
Console.WriteLine("Line type {0} not equal to {1}", lType.Name, o.CodeName);
}
}
if (o is EntityObject)
if (!ReferenceEquals(lType, ((EntityObject)o).LineType))
Console.WriteLine("Line type {0} not equal entity to {1}", lType.Name, o.CodeName);
}
}
Console.WriteLine("Press a key to continue...");
Console.ReadKey();
}
public void WriteProject(WaveguideDesignerProjectData project)
{
if( project == null ) return;
Type type;
EntityObject obj = null;
DxfDocument doc = new DxfDocument();
doc.Name = project.Name;
Layer dxfLayer;
LayerData layerData;
foreach( VirtualLayer vLayer in project.VirtualGraphics.Layers )
{
layerData = null;
foreach( LayerData tmp in project.Layers )
if( tmp.VirtualLayer == vLayer )
{
layerData = tmp;
break;
}
if( layerData == null ) continue;
dxfLayer = new Layer( layerData.Name );
dxfLayer.Color.Index = (short)layerData.LayerNumber;
doc.Layers.Add( dxfLayer );
foreach( VirtualShapeBase vShape in vLayer.Shapes )
{
type = vShape.GetType();
if( type == typeof( VirtualRectangle ) )
{
VirtualRectangle rect = (VirtualRectangle)vShape;
Polyline dxfrect = new Polyline();
obj = new Polyline();
dxfrect.IsClosed = true;
dxfrect.Vertexes.Add( new PolylineVertex( rect.Location.X, rect.Location.Y, 0 ) );
dxfrect.Vertexes.Add( new PolylineVertex( rect.Location.X + rect.Size.W, rect.Location.Y, 0 ) );
dxfrect.Vertexes.Add( new PolylineVertex( rect.Location.X + rect.Size.W, rect.Location.Y + rect.Size.H, 0 ) );
dxfrect.Vertexes.Add( new PolylineVertex( rect.Location.X, rect.Location.Y + rect.Size.H, 0 ) );
dxfrect.Vertexes.Add( new PolylineVertex( rect.Location.X, rect.Location.Y, 0 ) );
obj = dxfrect;
}
else if( type == typeof( VirtualPolygon ) )
{
VirtualPolygon poly = (VirtualPolygon)vShape;
Polyline dxfpoly = new Polyline();
dxfpoly.IsClosed = true;
foreach( PointD p in poly.Vertices )
dxfpoly.Vertexes.Add( conv( p ) );
dxfpoly.Vertexes.Add( conv( poly.Vertices[0] ) );
obj = dxfpoly;
}
else if( type == typeof( VirtualEllipse ) )
{
VirtualEllipse elli = (VirtualEllipse)vShape;
Ellipse dxfelli = new Ellipse();
dxfelli.Center = new netDxf.Vector3( elli.Center.X, elli.Center.Y, 0 );
dxfelli.StartAngle = 0;
dxfelli.EndAngle = 360;
dxfelli.MajorAxis = Math.Max( elli.Radius.W, elli.Radius.H );
dxfelli.MinorAxis = Math.Min( elli.Radius.W, elli.Radius.H );
dxfelli.Rotation = elli.Radius.W >= elli.Radius.H ? 0 : 90;
obj = dxfelli;
}
else if( type == typeof( VirtualPie ) )
{
VirtualPie pie = (VirtualPie)vShape;
Ellipse dxfelli = new Ellipse();
dxfelli.Center = new netDxf.Vector3( pie.Center.X, pie.Center.Y, 0 );
dxfelli.StartAngle = pie.StartAngle;
dxfelli.EndAngle = pie.EndAngle;
dxfelli.MajorAxis = Math.Max( pie.Radius.W, pie.Radius.H );
dxfelli.MinorAxis = Math.Min( pie.Radius.W, pie.Radius.H );
dxfelli.Rotation = pie.Radius.W >= pie.Radius.H ? 0 : 90;
obj = dxfelli;
}
else obj = null;
if( obj == null )
continue;
obj.Layer = dxfLayer;
doc.AddEntity( obj );
}
}
doc.Save( FileName );
}
private static void LayerAndLineTypesUsesAndRemove()
{
DxfDocument dxf = new DxfDocument();
Layer layer1 = new Layer("Layer1");
layer1.Color = AciColor.Blue;
layer1.LineType = LineType.Center;
Layer layer2 = new Layer("Layer2");
layer2.Color = AciColor.Red;
LwPolyline poly = new LwPolyline();
poly.Vertexes.Add(new LwPolylineVertex(0, 0));
poly.Vertexes.Add(new LwPolylineVertex(10, 10));
poly.Vertexes.Add(new LwPolylineVertex(20, 0));
poly.Vertexes.Add(new LwPolylineVertex(30, 10));
poly.Layer = layer1;
dxf.AddEntity(poly);
Ellipse ellipse = new Ellipse(new Vector3(2, 2, 0), 5, 3);
ellipse.Rotation = 30;
ellipse.Layer = layer1;
dxf.AddEntity(ellipse);
Line line = new Line(new Vector2(10, 5), new Vector2(-10, -5));
line.Layer = layer2;
line.LineType = LineType.DashDot;
dxf.AddEntity(line);
bool ok;
// this will return false since layer1 is not empty
ok = dxf.Layers.Remove(layer1.Name);
List<DxfObject> entities = dxf.Layers.GetReferences(layer1.Name);
foreach (DxfObject o in entities)
{
dxf.RemoveEntity(o as EntityObject);
}
// now this should return true since layer1 is empty
ok = dxf.Layers.Remove(layer1.Name);
// blocks needs an special attention
Layer layer3 = new Layer("Layer3");
layer3.Color = AciColor.Yellow;
Circle circle = new Circle(Vector3.Zero, 15);
// it is always recommended that all block entities will be located in layer 0, but this is up to the user.
circle.Layer = new Layer("circle");
circle.Layer.Color = AciColor.Green;
Block block = new Block("MyBlock");
block.Entities.Add(circle);
block.Layer = new Layer("blockLayer");
AttributeDefinition attdef = new AttributeDefinition("NewAttribute");
attdef.Layer = new Layer("attDefLayer");
attdef.LineType = LineType.Center;
block.AttributeDefinitions.Add(attdef);
Insert insert = new Insert(block, new Vector2(5, 5));
insert.Layer = layer3;
insert.Attributes[0].Layer = new Layer("attLayer");
insert.Attributes[0].LineType = LineType.Dashed;
dxf.AddEntity(insert);
dxf.Save("test.dxf");
DxfDocument dxf2 = DxfDocument.Load("test.dxf");
// this list will contain the circle entity
List<DxfObject> dxfObjects;
dxfObjects = dxf.Layers.GetReferences("circle");
// but we cannot removed since it is part of a block
ok = dxf.RemoveEntity(circle);
// we need to remove first the block, but to do this we need to make sure there are no references of that block in the document
dxfObjects = dxf.Blocks.GetReferences(block.Name);
foreach (DxfObject o in dxfObjects)
{
dxf.RemoveEntity(o as EntityObject);
}
// now it is safe to remove the block since we do not have more references in the document
ok = dxf.Blocks.Remove(block.Name);
// now it is safe to remove the layer "circle", the circle entity was removed with the block since it was part of it
ok = dxf.Layers.Remove("circle");
// purge all document layers, only empty layers will be removed
dxf.Layers.Clear();
// purge all document line types, only line types without references will be removed
dxf.LineTypes.Clear();
dxf.Save("test2.dxf");
}
private void WriteEllipseAsPolyline(Ellipse ellipse)
{
//we will draw the ellipse as a polyline, it is not supported in AutoCad12 dxf files
this.WriteCodePair(0, DxfObjectCode.Polyline);
this.WriteEntityCommonCodes(ellipse);
//closed polyline
this.WriteCodePair(70, 1);
//dummy point
this.WriteCodePair(10, 0.0);
this.WriteCodePair(20, 0.0);
this.WriteCodePair(30, ellipse.Center.Z);
this.WriteCodePair(39, ellipse.Thickness);
this.WriteCodePair(210, ellipse.Normal.X);
this.WriteCodePair(220, ellipse.Normal.Y);
this.WriteCodePair(230, ellipse.Normal.Z);
//Obsolete; formerly an “entities follow flag” (optional; ignore if present)
//but its needed to load the dxf file in AutoCAD
this.WriteCodePair(66, "1");
this.WriteXData(ellipse.XData);
List<Vector2d> points = ellipse.PolygonalVertexes(ellipse.CurvePoints);
foreach (Vector2d v in points)
{
this.WriteCodePair(0, DxfObjectCode.Vertex);
this.WriteCodePair(8, ellipse.Layer);
this.WriteCodePair(70, 0);
this.WriteCodePair(10, v.X);
this.WriteCodePair(20, v.Y);
}
this.WriteCodePair(0, StringCode.EndSequence);
}
private static void ToPolyline()
{
DxfDocument dxf = new DxfDocument();
Vector3 center = new Vector3(1, 8, -7);
Vector3 normal = new Vector3(1, 1, 1);
Circle circle = new Circle(center, 7.5);
circle.Normal = normal;
Arc arc = new Arc(center, 5, -45, 45);
arc.Normal = normal;
Ellipse ellipse = new Ellipse(center, 15, 7.5);
ellipse.Rotation = 35;
ellipse.Normal = normal;
Ellipse ellipseArc = new Ellipse(center, 10, 5);
ellipseArc.StartAngle = 315;
ellipseArc.EndAngle = 45;
ellipseArc.Rotation = 35;
ellipseArc.Normal = normal;
dxf.AddEntity(circle);
dxf.AddEntity(circle.ToPolyline(10));
dxf.AddEntity(arc);
dxf.AddEntity(arc.ToPolyline(10));
dxf.AddEntity(ellipse);
dxf.AddEntity(ellipse.ToPolyline(10));
dxf.AddEntity(ellipseArc);
dxf.AddEntity(ellipseArc.ToPolyline(10));
dxf.Save("to polyline.dxf");
dxf = DxfDocument.Load("to polyline.dxf");
dxf.Save("to polyline2.dxf");
}
private double[] GetEllipseParameters(Ellipse ellipse)
{
double atan1;
double atan2;
if (ellipse.IsFullEllipse)
{
atan1 = 0.0;
atan2 = MathHelper.TwoPI;
}
else
{
Vector2 startPoint = new Vector2(ellipse.Center.X, ellipse.Center.Y) + ellipse.PolarCoordinateRelativeToCenter(ellipse.StartAngle);
Vector2 endPoint = new Vector2(ellipse.Center.X, ellipse.Center.Y) + ellipse.PolarCoordinateRelativeToCenter(ellipse.EndAngle);
double a = ellipse.MajorAxis*0.5;
double b = ellipse.MinorAxis*0.5;
double px1 = (startPoint.X - ellipse.Center.X)/a;
double py1 = (startPoint.Y - ellipse.Center.Y)/b;
double px2 = (endPoint.X - ellipse.Center.X)/a;
double py2 = (endPoint.Y - ellipse.Center.Y)/b;
atan1 = Math.Atan2(py1, px1);
atan2 = Math.Atan2(py2, px2);
}
return new[] {atan1, atan2};
}
private static void HatchTest2()
{
DxfDocument dxf = new DxfDocument();
LwPolyline poly = new LwPolyline();
poly.Vertexes.Add(new LwPolylineVertex(-10, -10));
poly.Vertexes.Add(new LwPolylineVertex(10, -10));
poly.Vertexes.Add(new LwPolylineVertex(10, 10));
poly.Vertexes.Add(new LwPolylineVertex(-10, 10));
poly.Vertexes[2].Bulge = 1;
poly.IsClosed = true;
Circle circle = new Circle(Vector3.Zero, 5);
Ellipse ellipse = new Ellipse(Vector3.Zero,16,10);
ellipse.Rotation = 30;
List<HatchBoundaryPath> boundary = new List<HatchBoundaryPath>{
new HatchBoundaryPath(new List<EntityObject>{poly}),
new HatchBoundaryPath(new List<EntityObject>{circle}),
new HatchBoundaryPath(new List<EntityObject>{ellipse})
};
Hatch hatch = new Hatch(HatchPattern.Line, boundary, false);
hatch.Pattern.Angle = 150;
hatch.Pattern.Scale = 5;
//hatch.Normal = new Vector3(1,1,1);
//hatch.Elevation = 23;
//dxf.AddEntity(poly);
//dxf.AddEntity(circle);
//dxf.AddEntity(ellipse);
dxf.AddEntity(hatch);
hatch.CreateBoundary(true);
dxf.Save("hatchTest2.dxf");
dxf = DxfDocument.Load("hatchTest2.dxf");
dxf.Save("hatchTest2 copy.dxf");
}
private static void HatchTest3()
{
DxfDocument dxf = new DxfDocument();
LwPolyline poly = new LwPolyline();
poly.Vertexes.Add(new LwPolylineVertex(-10, -10));
poly.Vertexes.Add(new LwPolylineVertex(10, -10));
poly.Vertexes.Add(new LwPolylineVertex(10, 10));
poly.Vertexes.Add(new LwPolylineVertex(-10, 10));
poly.Vertexes[2].Bulge = 1;
poly.IsClosed = true;
Ellipse ellipse = new Ellipse(Vector3.Zero, 16, 10);
ellipse.Rotation = 0;
ellipse.StartAngle = 0;
ellipse.EndAngle = 180;
LwPolyline poly2 = new LwPolyline();
poly2.Vertexes.Add(new LwPolylineVertex(-8, 0));
poly2.Vertexes.Add(new LwPolylineVertex(0, -4));
poly2.Vertexes.Add(new LwPolylineVertex(8, 0));
//Arc arc = new Arc(Vector3.Zero,8,180,0);
//Line line =new Line(new Vector3(8,0,0), new Vector3(-8,0,0));
List<HatchBoundaryPath> boundary = new List<HatchBoundaryPath>{
new HatchBoundaryPath(new List<EntityObject>{poly}),
new HatchBoundaryPath(new List<EntityObject>{poly2, ellipse})
};
Hatch hatch = new Hatch(HatchPattern.Line, boundary, true);
hatch.Pattern.Angle = 45;
//dxf.AddEntity(poly);
//dxf.AddEntity(ellipse);
////dxf.AddEntity(arc);
////dxf.AddEntity(line);
//dxf.AddEntity(poly2);
dxf.AddEntity(hatch);
dxf.Save("hatchTest3.dxf");
}
private static void Ellipse()
{
DxfDocument dxf = new DxfDocument();
//Line line = new Line(new Vector3(0, 0, 0), new Vector3(2 * Math.Cos(Math.PI / 4),2 * Math.Cos(Math.PI / 4), 0));
//dxf.AddEntity(line);
//Line line2 = new Line(new Vector3(0, 0, 0), new Vector3(0, -2, 0));
//dxf.AddEntity(line2);
//Arc arc=new Arc(Vector3.Zero,2,45,270);
//dxf.AddEntity(arc);
Ellipse ellipse = new Ellipse(new Vector3(2,2,0), 5,3);
ellipse.Rotation = 30;
ellipse.Normal=new Vector3(1,1,1);
ellipse.Thickness = 2;
dxf.AddEntity(ellipse);
Ellipse ellipseArc = new Ellipse(new Vector3(2, 10, 0), 5, 3);
ellipseArc.StartAngle = -45;
ellipseArc.EndAngle = 45;
dxf.AddEntity(ellipseArc);
dxf.Save("ellipse.dxf");
dxf = new DxfDocument();
dxf = DxfDocument.Load("ellipse.dxf");
DxfDocument load = DxfDocument.Load("test ellipse.dxf");
load.Save("saved test ellipse.dxf");
}
/// <summary>
/// Creates a new Ellipse that is a copy of the current instance.
/// </summary>
/// <returns>A new Ellipse that is a copy of this instance.</returns>
public override object Clone()
{
Ellipse entity = new Ellipse
{
//EntityObject properties
Layer = (Layer) this.Layer.Clone(),
Linetype = (Linetype) this.Linetype.Clone(),
Color = (AciColor) this.Color.Clone(),
Lineweight = this.Lineweight,
Transparency = (Transparency) this.Transparency.Clone(),
LinetypeScale = this.LinetypeScale,
Normal = this.Normal,
IsVisible = this.IsVisible,
//Ellipse properties
Center = this.center,
MajorAxis = this.majorAxis,
MinorAxis = this.minorAxis,
Rotation = this.rotation,
StartAngle = this.startAngle,
EndAngle = this.endAngle,
Thickness = this.thickness
};
foreach (XData data in this.XData.Values)
entity.XData.Add((XData) data.Clone());
return entity;
}
private static void Ellipse()
{
DxfDocument dxf = new DxfDocument();
Line line = new Line(new Vector3d(0, 0, 0), new Vector3d((2 * Math.Cos(Math.PI / 4)), (2 * Math.Cos(Math.PI / 4)), 0));
dxf.AddEntity(line);
Line line2 = new Line(new Vector3d(0, 0, 0), new Vector3d(0, -2, 0));
dxf.AddEntity(line2);
Arc arc=new Arc(Vector3d.Zero,2,45,270);
dxf.AddEntity(arc);
// ellipses are saved as polylines
Ellipse ellipse = new Ellipse(new Vector3d(2,2,0), 5,3);
ellipse.Rotation = 30;
ellipse.Normal=new Vector3d(1,1,1);
ellipse.Thickness = 2;
dxf.AddEntity(ellipse);
dxf.Save("ellipse.dxf", DxfVersion.AutoCad2000);
dxf = new DxfDocument();
dxf.Load("ellipse.dxf");
}