protected virtual MLineStyle OnMLineStyleChangeEvent(MLineStyle oldMLineStyle, MLineStyle newMLineStyle)
{
MLineStyleChangeEventHandler ae = this.MLineStyleChange;
if (ae != null)
{
TableObjectChangeEventArgs<MLineStyle> eventArgs = new TableObjectChangeEventArgs<MLineStyle>(oldMLineStyle, newMLineStyle);
ae(this, eventArgs);
return eventArgs.NewValue;
}
return newMLineStyle;
}
/// <summary>
/// Initializes a new instance of the <c>MLine</c> class.
/// </summary>
/// <param name="vertexes">MLine <see cref="Vector2">vertex</see> location list in object coordinates.</param>
/// <param name="style">MLine <see cref="MLineStyle">style.</see></param>
/// <param name="scale">MLine scale.</param>
/// <param name="isClosed">Sets if the multiline is closed</param>
public MLine(ICollection<Vector2> vertexes, MLineStyle style, double scale, bool isClosed = false)
: base(EntityType.MLine, DxfObjectCode.MLine)
{
this.scale = scale;
if (style == null)
throw new ArgumentNullException("style", "The MLine style cannot be null.");
if (isClosed)
this.flags = MLineFlags.Has | MLineFlags.Closed;
else
this.flags = MLineFlags.Has;
this.style = style;
this.justification = MLineJustification.Zero;
this.elevation = 0.0;
if (vertexes == null)
throw new ArgumentNullException("vertexes");
this.SetVertexes(vertexes);
}
/// <summary>
/// Initializes a new instance of the <c>MLine</c> class.
/// </summary>
/// <param name="vertexes">MLine <see cref="Vector2">vertex</see> location list in object coordinates.</param>
/// <param name="style">MLine <see cref="MLineStyle">style.</see></param>
/// <param name="scale">MLine scale.</param>
/// <param name="isClosed">Sets if the multiline is closed (default: false).</param>
public MLine(IEnumerable<Vector2> vertexes, MLineStyle style, double scale, bool isClosed)
: base(EntityType.MLine, DxfObjectCode.MLine)
{
this.scale = scale;
if (style == null)
throw new ArgumentNullException(nameof(style));
if (isClosed)
this.flags = MLineFlags.Has | MLineFlags.Closed;
else
this.flags = MLineFlags.Has;
this.style = style;
this.justification = MLineJustification.Zero;
this.elevation = 0.0;
if (vertexes == null)
throw new ArgumentNullException(nameof(vertexes));
this.vertexes = new List<MLineVertex>();
foreach (Vector2 point in vertexes)
this.vertexes.Add(new MLineVertex(point, Vector2.Zero, Vector2.Zero, null));
this.Update();
}
private void WriteMLineStyle(MLineStyle style, string ownerHandle)
{
this.chunk.Write(0, style.CodeName);
this.chunk.Write(5, style.Handle);
this.chunk.Write(330, ownerHandle);
this.chunk.Write(100, SubclassMarker.MLineStyle);
this.chunk.Write(2, this.EncodeNonAsciiCharacters(style.Name));
this.chunk.Write(70, (short) style.Flags);
this.chunk.Write(3, this.EncodeNonAsciiCharacters(style.Description));
this.chunk.Write(62, style.FillColor.Index);
if (style.FillColor.UseTrueColor) // && this.doc.DrawingVariables.AcadVer > DxfVersion.AutoCad2000)
this.chunk.Write(420, AciColor.ToTrueColor(style.FillColor));
this.chunk.Write(51, style.StartAngle);
this.chunk.Write(52, style.EndAngle);
this.chunk.Write(71, (short) style.Elements.Count);
foreach (MLineStyleElement element in style.Elements)
{
this.chunk.Write(49, element.Offset);
this.chunk.Write(62, element.Color.Index);
if (element.Color.UseTrueColor) // && this.doc.DrawingVariables.AcadVer > DxfVersion.AutoCad2000)
this.chunk.Write(420, AciColor.ToTrueColor(element.Color));
this.chunk.Write(6, this.EncodeNonAsciiCharacters(element.LineType.Name));
}
}
/// <summary>
/// Initializes a new instance of the <c>MLine</c> class.
/// </summary>
/// <param name="vertexes">MLine <see cref="Vector2">vertex</see> location list in object coordinates.</param>
/// <param name="style">MLine <see cref="MLineStyle">style.</see></param>
/// <param name="scale">MLine scale.</param>
public MLine(IEnumerable<Vector2> vertexes, MLineStyle style, double scale)
: this(vertexes, style, scale, false)
{
}
private MLineStyle ReadMLineStyle()
{
string handle = null;
string name = null;
string description = null;
AciColor fillColor = AciColor.ByLayer;
double startAngle = 90.0;
double endAngle = 90.0;
MLineStyleFlags flags = MLineStyleFlags.None;
List<MLineStyleElement> elements = new List<MLineStyleElement>();
this.chunk.Next();
while (this.chunk.Code != 0)
{
switch (this.chunk.Code)
{
case 5:
handle = this.chunk.ReadHex();
this.chunk.Next();
break;
case 2:
name = this.DecodeEncodedNonAsciiCharacters(this.chunk.ReadString());
this.chunk.Next();
break;
case 3:
description = this.DecodeEncodedNonAsciiCharacters(this.chunk.ReadString());
this.chunk.Next();
break;
case 62:
if (!fillColor.UseTrueColor)
fillColor = AciColor.FromCadIndex(this.chunk.ReadShort());
this.chunk.Next();
break;
case 420:
fillColor = AciColor.FromTrueColor(this.chunk.ReadInt());
this.chunk.Next();
break;
case 70:
flags = (MLineStyleFlags) this.chunk.ReadShort();
this.chunk.Next();
break;
case 51:
startAngle = this.chunk.ReadDouble();
if (startAngle < 10.0 || startAngle > 170.0)
startAngle = 90.0;
this.chunk.Next();
break;
case 52:
endAngle = this.chunk.ReadDouble();
if (endAngle < 10.0 || endAngle > 170.0)
endAngle = 90.0;
this.chunk.Next();
break;
case 71:
short numElements = this.chunk.ReadShort();
elements = this.ReadMLineStyleElements(numElements);
break;
default:
this.chunk.Next();
break;
}
}
if (string.IsNullOrEmpty(name))
return null;
MLineStyle style = new MLineStyle(name, elements, description)
{
Handle = handle,
FillColor = fillColor,
Flags = flags,
StartAngle = startAngle,
EndAngle = endAngle
};
return style;
}
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");
}