/// <summary>
/// Creates a new MLine that is a copy of the current instance.
/// </summary>
/// <returns>A new MLine that is a copy of this instance.</returns>
public override object Clone()
{
MLine entity = new MLine
{
//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,
//MLine properties
Elevation = this.elevation,
Scale = this.scale,
Justification = this.justification,
Style = (MLineStyle)this.style.Clone(),
Flags = this.flags
};
foreach (MLineVertex vertex in this.vertexes)
{
entity.vertexes.Add((MLineVertex)vertex.Clone());
}
foreach (XData data in this.XData.Values)
{
entity.XData.Add((XData)data.Clone());
}
return(entity);
}
/// <summary>
/// Creates a new MLine that is a copy of the current instance.
/// </summary>
/// <returns>A new MLine that is a copy of this instance.</returns>
public override object Clone()
{
List <MLineVertex> copyVertexes = new List <MLineVertex>();
foreach (MLineVertex vertex in this.vertexes)
{
copyVertexes.Add((MLineVertex)vertex.Clone());
}
MLine entity = new MLine
{
//EntityObject properties
Layer = (Layer)this.layer.Clone(),
LineType = (LineType)this.lineType.Clone(),
Color = (AciColor)this.color.Clone(),
Lineweight = (Lineweight)this.lineweight.Clone(),
Transparency = (Transparency)this.transparency.Clone(),
LineTypeScale = this.lineTypeScale,
Normal = this.normal,
//MLine properties
Vertexes = copyVertexes,
Elevation = this.elevation,
Scale = this.scale,
IsClosed = this.isClosed,
NoStartCaps = this.noStartCaps,
NoEndCaps = this.noEndCaps,
Justification = this.justification,
Style = this.style
};
foreach (XData data in this.XData.Values)
{
entity.XData.Add((XData)data.Clone());
}
return(entity);
}
/// <summary>
/// Creates a new MLine that is a copy of the current instance.
/// </summary>
/// <returns>A new MLine that is a copy of this instance.</returns>
public override object Clone()
{
MLine entity = new MLine
{
//EntityObject properties
Layer = (Layer)this.layer.Clone(),
LineType = (LineType)this.lineType.Clone(),
Color = (AciColor)this.color.Clone(),
Lineweight = (Lineweight)this.lineweight.Clone(),
Transparency = (Transparency)this.transparency.Clone(),
LineTypeScale = this.lineTypeScale,
Normal = this.normal,
//MLine properties
Elevation = this.elevation,
Scale = this.scale,
Justification = this.justification,
Style = this.style,
Flags = this.Flags
};
foreach (MLineVertex vertex in this.vertexes)
entity.vertexes.Add((MLineVertex)vertex.Clone());
foreach (XData data in this.XData.Values)
entity.XData.Add((XData)data.Clone());
return entity;
}
private void WriteMLine(MLine mLine)
{
this.chunk.Write(100, SubclassMarker.MLine);
this.chunk.Write(2, this.EncodeNonAsciiCharacters(mLine.Style.Name));
this.chunk.Write(340, mLine.Style.Handle);
this.chunk.Write(40, mLine.Scale);
this.chunk.Write(70, (short) mLine.Justification);
this.chunk.Write(71, (short) mLine.Flags);
this.chunk.Write(72, (short) mLine.Vertexes.Count);
this.chunk.Write(73, (short) mLine.Style.Elements.Count);
// the MLine information is in OCS we need to save it in WCS
// this behavior is similar to the LWPolyline, the info is in OCS because these entities are strictly 2d. Normally they are used in the XY plane whose
// normal is (0, 0, 1) so no transformation is needed, OCS are equal to WCS
List<Vector3> ocsVertexes = new List<Vector3>();
foreach (MLineVertex segment in mLine.Vertexes)
{
ocsVertexes.Add(new Vector3(segment.Location.X, segment.Location.Y, mLine.Elevation));
}
IList<Vector3> vertexes = MathHelper.Transform(ocsVertexes, mLine.Normal, CoordinateSystem.Object, CoordinateSystem.World);
Vector3[] wcsVertexes = new Vector3[vertexes.Count];
vertexes.CopyTo(wcsVertexes, 0);
// Although it is not recommended the vertex list might have 0 entries
if (wcsVertexes.Length == 0)
{
this.chunk.Write(10, 0.0);
this.chunk.Write(20, 0.0);
this.chunk.Write(30, 0.0);
}
else
{
this.chunk.Write(10, wcsVertexes[0].X);
this.chunk.Write(20, wcsVertexes[0].Y);
this.chunk.Write(30, wcsVertexes[0].Z);
}
this.chunk.Write(210, mLine.Normal.X);
this.chunk.Write(220, mLine.Normal.Y);
this.chunk.Write(230, mLine.Normal.Z);
for (int i = 0; i < wcsVertexes.Length; i++)
{
this.chunk.Write(11, wcsVertexes[i].X);
this.chunk.Write(21, wcsVertexes[i].Y);
this.chunk.Write(31, wcsVertexes[i].Z);
// the directions are written in world coordinates
Vector2 dir = mLine.Vertexes[i].Direction;
Vector3 wcsDir = MathHelper.Transform(new Vector3(dir.X, dir.Y, mLine.Elevation), mLine.Normal, CoordinateSystem.Object, CoordinateSystem.World);
this.chunk.Write(12, wcsDir.X);
this.chunk.Write(22, wcsDir.Y);
this.chunk.Write(32, wcsDir.Z);
Vector2 mitter = mLine.Vertexes[i].Miter;
Vector3 wcsMitter = MathHelper.Transform(new Vector3(mitter.X, mitter.Y, mLine.Elevation), mLine.Normal, CoordinateSystem.Object, CoordinateSystem.World);
this.chunk.Write(13, wcsMitter.X);
this.chunk.Write(23, wcsMitter.Y);
this.chunk.Write(33, wcsMitter.Z);
foreach (List<double> distances in mLine.Vertexes[i].Distances)
{
this.chunk.Write(74, (short) distances.Count);
foreach (double distance in distances)
{
this.chunk.Write(41, distance);
}
this.chunk.Write(75, (short) 0);
}
}
this.WriteXData(mLine.XData);
}
private void MLine_MLineStyleChanged(MLine sender, TableObjectChangedEventArgs<MLineStyle> e)
{
this.mlineStyles.References[e.OldValue.Name].Remove(sender);
e.NewValue = this.mlineStyles.Add(e.NewValue);
this.mlineStyles.References[e.NewValue.Name].Add(sender);
}
private MLine ReadMLine()
{
string styleName = null;
double scale = 1.0;
MLineJustification justification = MLineJustification.Zero;
MLineFlags flags = MLineFlags.Has;
int numVertexes = 0;
int numStyleElements = 0;
double elevation = 0.0;
Vector3 normal = Vector3.UnitZ;
List<MLineVertex> segments = new List<MLineVertex>();
List<XData> xData = new List<XData>();
this.chunk.Next();
while (this.chunk.Code != 0)
{
switch (this.chunk.Code)
{
case 2:
// the MLineStyle is defined in the objects sections after the definition of the entity, something similar happens with the image entity
// the MLineStyle will be applied to the MLine after parsing the whole file
styleName = this.DecodeEncodedNonAsciiCharacters(this.chunk.ReadString());
if (string.IsNullOrEmpty(styleName))
styleName = this.doc.DrawingVariables.CMLStyle;
this.chunk.Next();
break;
case 40:
scale = this.chunk.ReadDouble();
this.chunk.Next();
break;
case 70:
justification = (MLineJustification) this.chunk.ReadShort();
this.chunk.Next();
break;
case 71:
flags = (MLineFlags) this.chunk.ReadShort();
this.chunk.Next();
break;
case 72:
numVertexes = this.chunk.ReadShort();
this.chunk.Next();
break;
case 73:
numStyleElements = this.chunk.ReadShort();
this.chunk.Next();
break;
case 10:
// this info is not needed it is repeated in the vertexes list
this.chunk.Next();
break;
case 20:
// this info is not needed it is repeated in the vertexes list
this.chunk.Next();
break;
case 30:
// this info is not needed it is repeated in the vertexes list
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 11:
// the info that follows contains the information on the vertexes of the MLine
segments = this.ReadMLineSegments(numVertexes, numStyleElements, normal, out elevation);
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;
}
}
MLine mline = new MLine
{
Elevation = elevation,
Scale = scale,
Justification = justification,
Normal = normal,
Flags = flags
};
mline.Vertexes.AddRange(segments);
mline.XData.AddRange(xData);
// save the referenced style name for post processing
this.mLineToStyleNames.Add(mline, styleName);
return mline;
}
public static void ModifyingMLineStyles()
{
DxfDocument doc = new DxfDocument(DxfVersion.AutoCad2010);
doc.DrawingVariables.LtScale = 10;
List<Vector2> vertexes = new List<Vector2>
{
new Vector2(0, 0),
new Vector2(0, 150),
new Vector2(150, 150),
new Vector2(150, 0)
};
MLine mline = new MLine(vertexes);
mline.Scale = 20;
mline.Justification = MLineJustification.Zero;
MLineStyle style = new MLineStyle("MyStyle", "Personalized style.");
style.Elements.Add(new MLineStyleElement(0.25));
style.Elements.Add(new MLineStyleElement(-0.25));
// if we add new elements directly to the list we need to sort the list,
style.Elements.Sort();
style.Flags = MLineStyleFlags.EndInnerArcsCap | MLineStyleFlags.EndRoundCap | MLineStyleFlags.StartInnerArcsCap | MLineStyleFlags.StartRoundCap;
// AutoCad2000 dxf version does not support true colors for MLineStyle elements
style.Elements[0].Color = new AciColor(180, 230, 147);
doc.AddEntity(mline);
// change the multi line style after it has been added to the document
mline.Style = style;
Debug.Assert(ReferenceEquals(mline.Style, doc.MlineStyles[mline.Style.Name]), "Reference not equals.");
// VERY IMPORTANT: We have modified the MLine after setting its vertexes so we need to manually call this method.
// It is also necessary when manually editing the vertex distances.
mline.Update();
// the line type will be automatically added to the document
foreach (MLineStyleElement e in style.Elements)
{
// making changes after the MLineStyle has been added to the document
e.LineType = LineType.Dashed;
Debug.Assert(ReferenceEquals(e.LineType, doc.LineTypes[e.LineType.Name]), "Reference not equals.");
}
MLine copy = (MLine) mline.Clone();
copy.Scale = 100;
doc.AddEntity(copy);
// once the entity has been added to the document, changing its style requires that the new style is also present in the document.
copy.Style = doc.MlineStyles["standard"];
// VERY IMPORTANT: We have modified the MLine after setting its vertexes so we need to manually call this method.
// It is also necessary when manually editing the vertex distances.
copy.Update();
doc.Save("ModifyingMLineStyle.dxf");
Test("ModifyingMLineStyle.dxf");
}
private static void WriteMLine()
{
DxfDocument dxf = new DxfDocument();
//MLineStyle style = MLineStyle.Default;
//dxf.AddMLineStyle(style);
List<Vector2> vertexes = new List<Vector2>
{
new Vector2(0, 0),
new Vector2(0, 150),
new Vector2(150, 150),
new Vector2(150, 0)
};
MLine mline = new MLine(vertexes);
mline.Scale = 20;
mline.Justification = MLineJustification.Zero;
//mline.IsClosed = true;
MLineStyle style = new MLineStyle("MyStyle", "Personalized style.");
style.Elements.Add(new MLineStyleElement(0.25));
style.Elements.Add(new MLineStyleElement(-0.25));
// if we add new elements directly to the list we need to sort the list,
style.Elements.Sort();
style.Flags = MLineStyleFlags.EndInnerArcsCap | MLineStyleFlags.EndRoundCap | MLineStyleFlags.StartInnerArcsCap | MLineStyleFlags.StartRoundCap;
//style.StartAngle = 25.0;
//style.EndAngle = 160.0;
// AutoCad2000 dxf version does not support true colors for MLineStyle elements
style.Elements[0].Color = new AciColor(180, 230, 147);
mline.Style = style;
// we have modified the multiline after setting its vertexes so we need to manually call this method.
// also when manually editing the vertex distances
mline.Update();
// we can manually create cuts or gaps in the individual elements that made the multiline.
// the cuts are defined as distances from the start point of the element along its direction.
mline.Vertexes[0].Distances[0].Add(50);
mline.Vertexes[0].Distances[0].Add(100);
mline.Vertexes[0].Distances[mline.Style.Elements.Count-1].Add(50);
mline.Vertexes[0].Distances[mline.Style.Elements.Count-1].Add(100);
dxf.AddEntity(mline);
dxf.DrawingVariables.AcadVer = DxfVersion.AutoCad2004;
dxf.Save("MLine.dxf");
//dxf = DxfDocument.Load("Drawing1.dxf");
//dxf.Save("Drawing1 copy.dxf");
//dxf = DxfDocument.Load("Drawing3.dxf");
//dxf.Save("Drawing3 copy.dxf");
//dxf = DxfDocument.Load("Drawing2.dxf");
//dxf.Save("Drawing2 copy.dxf");
// empty mline
//List<Vector2> vertexes2 = new List<Vector2>
// {
// new Vector2(0, 0),
// new Vector2(100, 100),
// new Vector2(100, 100),
// new Vector2(200, 0)
// };
//MLine mline2 = new MLine(vertexes2){Scale = 20};
//mline2.CalculateVertexesInfo();
//DxfDocument dxf2 = new DxfDocument();
//dxf2.AddEntity(mline2);
////dxf2.Save("void mline.dxf");
//MLine mline3 = new MLine();
//dxf2.AddEntity(mline3);
////dxf2.Save("void mline.dxf");
//Polyline pol = new Polyline();
//LwPolyline lwPol = new LwPolyline();
//dxf2.AddEntity(pol);
//dxf2.AddEntity(lwPol);
//dxf2.Save("void mline.dxf");
//dxf2 = DxfDocument.Load("void mline.dxf");
}
private static void MLineStyleUsesAndRemove()
{
DxfDocument dxf = new DxfDocument();
//MLineStyle style = MLineStyle.Default;
//dxf.AddMLineStyle(style);
List<Vector2> vertexes = new List<Vector2>
{
new Vector2(0, 0),
new Vector2(0, 150),
new Vector2(150, 150),
new Vector2(150, 0)
};
MLine mline = new MLine(vertexes);
mline.Scale = 20;
mline.Justification = MLineJustification.Zero;
//mline.IsClosed = true;
MLineStyle style = new MLineStyle("MyStyle", "Personalized style.");
style.Elements.Add(new MLineStyleElement(0.25));
style.Elements.Add(new MLineStyleElement(-0.25));
// if we add new elements directly to the list we need to sort the list,
style.Elements.Sort();
style.Flags = MLineStyleFlags.EndInnerArcsCap | MLineStyleFlags.EndRoundCap | MLineStyleFlags.StartInnerArcsCap | MLineStyleFlags.StartRoundCap;
//style.StartAngle = 25.0;
//style.EndAngle = 160.0;
// AutoCad2000 dxf version does not support true colors for MLineStyle elements
style.Elements[0].Color = new AciColor(180, 230, 147);
mline.Style = style;
// we have modified the mline after setting its vertexes so we need to manually call this method.
// also when manually editting the vertex distances
mline.Update();
// we can manually create cuts or gaps in the individual elements that made the multiline.
// the cuts are defined as distances from the start point of the element along its direction.
mline.Vertexes[0].Distances[0].Add(50);
mline.Vertexes[0].Distances[0].Add(100);
mline.Vertexes[0].Distances[mline.Style.Elements.Count - 1].Add(50);
mline.Vertexes[0].Distances[mline.Style.Elements.Count - 1].Add(100);
dxf.AddEntity(mline);
dxf.DrawingVariables.AcadVer = DxfVersion.AutoCad2004;
dxf.Save("MLine.dxf");
DxfDocument dxf2 = DxfDocument.Load("MLine.dxf");
// "MyStyle" is used only once
List<DxfObject> uses;
uses = dxf.MlineStyles.GetReferences(mline.Style.Name);
// if we try to get the LineTypeUses, we will find out that "MyStyle" appears several times,
// this is due to that each MLineStyleElement of a MLineStyle has an associated LineType
uses = dxf.LineTypes.GetReferences(LineType.ByLayerName);
bool ok;
ok = dxf.RemoveEntity(mline);
// "MyStyle" is not used its reference has been deleted
uses = dxf.MlineStyles.GetReferences(mline.Style.Name);
// we can safely remove it
dxf.MlineStyles.Remove(mline.Style.Name);
dxf.Save("MLine2.dxf");
dxf.Layers.Clear();
dxf.Save("MLine2.dxf");
}
