} // end CheckLayers()
// Convert2DPolyToLWPoly: Convert to "LWPOLYLINE" for performance reasons
public static Polyline Convert2DPolyToLWPoly(Entity ent)
{
// Select the currently open AutoCAD drawing and...
Document doc = Application.DocumentManager.MdiActiveDocument;
// Open the Drawing Database of Objects in the current drawing
Database db = doc.Database;
try
{
Polyline poly = new Polyline();
using (Transaction tr = db.TransactionManager.StartTransaction())
{
// Open the Block table for read
BlockTable bt = tr.GetObject(db.BlockTableId, OpenMode.ForRead) as BlockTable;
// Open the Block table record Model space for write
BlockTableRecord btr = tr.GetObject(bt[BlockTableRecord.ModelSpace],
OpenMode.ForWrite) as BlockTableRecord;
Polyline2d poly2d = (Polyline2d)ent;
poly2d.UpgradeOpen();
poly.ConvertFrom(poly2d, false);
btr.AppendEntity(poly);
tr.AddNewlyCreatedDBObject(poly, true);
tr.Commit();
} // End Transaction
return(poly);
}
catch
{
throw new ApplicationException("2D Polyline to LWPolyline conversion failure");
}
} // End Convert2DPolyToLWPoly()
public static Polyline GetProjectedPolyline(this Polyline2d pline, [NotNull] Plane plane, Vector3d direction)
{
var tol = new Tolerance(1e-9, 1e-9);
if (plane.Normal.IsPerpendicularTo(direction, tol))
{
return(null);
}
if (pline.Normal.IsPerpendicularTo(direction, tol))
{
var dirPlane = new Plane(Point3d.Origin, direction);
if (!pline.IsWriteEnabled)
{
// ReSharper disable once UpgradeOpen
pline.UpgradeOpen();
}
pline.TransformBy(Matrix3d.WorldToPlane(dirPlane));
var extents = pline.GeometricExtents;
pline.TransformBy(Matrix3d.PlaneToWorld(dirPlane));
return(GeomExt.ProjectExtents(extents, plane, direction, dirPlane));
}
return(GeomExt.ProjectPolyline(pline, plane, direction));
}
public void MyCommand() // This method can have any name
{
// Put your command code here
Document doc = Application.DocumentManager.MdiActiveDocument;
Database db = doc.Database;
Editor ed = doc.Editor;
using (Transaction Trans = db.TransactionManager.StartTransaction())
{
try
{
TypedValue[] Filter = new TypedValue[]
{
new TypedValue((int)DxfCode.Operator, "<and"),
new TypedValue((int)DxfCode.LayoutName, "Model"),
new TypedValue((int)DxfCode.Operator, "<or"),
new TypedValue((int)DxfCode.Start, "POLYLINE"),
new TypedValue((int)DxfCode.Start, "POLYLINE3D"),
new TypedValue((int)DxfCode.Start, "POLYLINE2D"),
new TypedValue((int)DxfCode.Start, "LWPOLYLINE"),
new TypedValue((int)DxfCode.Operator, "or>"),
new TypedValue((int)DxfCode.Operator, "and>"),
};
PromptSelectionResult selresult = ed.SelectAll(new SelectionFilter(Filter));
ObjectId[] Ids;
if (selresult.Status == PromptStatus.OK)
{
Ids = selresult.Value.GetObjectIds();
}
else
{
ed.WriteMessage("\n未找到任何多段线！");
return;
}
#region testcode
ed.WriteMessage("\n搜索到>{0}<个对象！", selresult.Value.Count);
#endregion
int counter = 0;
foreach (ObjectId Id in Ids)
{
Curve cur = Trans.GetObject(Id, OpenMode.ForRead) as Curve;
switch (cur.GetType().Name)
{
case "Polyline":
{
Polyline PL = cur as Polyline;
if (PL.Length == 0)
{
break;
}
if (PL.HasWidth)
{
PL.UpgradeOpen();
for (int i = 0; i < PL.NumberOfVertices; i++)
{
PL.SetStartWidthAt(i, 0);
PL.SetEndWidthAt(i, 0);
}
counter++;
}
break;
}
case "Polyline2d":
{
Polyline2d PL2d = cur as Polyline2d;
if (PL2d.Length == 0)
{
break;
}
if (PL2d.DefaultEndWidth != 0 || PL2d.DefaultStartWidth != 0)
{
PL2d.UpgradeOpen();
PL2d.ConstantWidth = 0;
counter++;
}
break;
}
}
}
ed.WriteMessage("\n共将{0}条多段线的全局宽度调整为0.", counter);
Trans.Commit();
}
catch (Autodesk.AutoCAD.Runtime.Exception Ex)
{
ed.WriteMessage("出错啦！{0}", Ex.ToString());
}
finally
{
Trans.Dispose();
}
}
}