Polyline2dHardwired()
{
m_db = Utils.Db.GetCurDwg();
using (CompBldrCurSpace compBldr = new CompBldrCurSpace(m_db)) {
compBldr.Start();
compBldr.PushXform(Utils.Db.GetUcsMatrix(m_db));
Polyline2d pline2d = new Polyline2d();
pline2d.Color = Color.FromRgb(42, 184, 185);
// polyline2d needs to be in database before the vertices
// can be added to it. The polyline2d owns the vertices.
compBldr.AddToDb(pline2d);
Point3d[] pts = new Point3d[4];
pts[0] = new Point3d(0.0, 0.0, 0.0);
pts[1] = new Point3d(15.0, 0.0, 0.0);
pts[2] = new Point3d(15.0, 8.0, 0.0);
pts[3] = new Point3d(0.0, 8.0, 0.0);
Vertex2d vertX2d;
for (int i = 0; i < pts.Length; i++)
{
vertX2d = new Vertex2d(pts[i], 0.0, 0.0, 0.0, 0.0);
pline2d.AppendVertex(vertX2d);
compBldr.Transaction.AddNewlyCreatedDBObject(vertX2d, true);
}
pline2d.Closed = true;
compBldr.Commit();
}
}
public static ObjectId?addPolyline(List <Point3d> plist, ObjectId layerId)
{
try
{
Document acDoc = Application.DocumentManager.MdiActiveDocument;
Database acCurDb = acDoc.Database;
using (Transaction tran = acCurDb.TransactionManager.StartTransaction())
{
BlockTable bt = tran.GetObject(acCurDb.BlockTableId, OpenMode.ForRead) as BlockTable;
BlockTableRecord modelSpace = tran.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite) as BlockTableRecord;
Polyline2d b = new Polyline2d();
ObjectId oid = modelSpace.AppendEntity(b);
for (int i = 0; i < plist.Count; i++)
{
b.AppendVertex(new Vertex2d(plist[i], 0, 0, 0, 0));
}
b.Closed = true;
if (layerId != ObjectId.Null)
{
b.LayerId = layerId;
}
tran.AddNewlyCreatedDBObject(b, true);
tran.Commit();
return(oid);
}
}
catch (System.Exception ex)
{
}
return(null);
}
public static void TranslateCoordinates()
{
// 获取当前文档和数据库，启动事务
var acDoc = Autodesk.AutoCAD.ApplicationServices.Core.Application.DocumentManager.MdiActiveDocument;
var acCurDb = acDoc.Database;
using (var acTrans = acCurDb.TransactionManager.StartTransaction())
{
// 以读模式打开块表
BlockTable acBlkTbl;
acBlkTbl = acTrans.GetObject(acCurDb.BlockTableId,
OpenMode.ForRead) as BlockTable;
// 以写模式打开块表记录模型空间
BlockTableRecord acBlkTblRec;
acBlkTblRec = acTrans.GetObject(acBlkTbl[BlockTableRecord.ModelSpace],
OpenMode.ForWrite) as BlockTableRecord;
// 创建2D多段线
var acPoly2d = new Polyline2d();
// 将新对象添加到块表记录和事务
acBlkTblRec.AppendEntity(acPoly2d);
acTrans.AddNewlyCreatedDBObject(acPoly2d, true);
// 先将多段线添加到块表记录，然后才能给它添加顶点
var acPts2dPoly = new Point3dCollection();
acPts2dPoly.Add(new Point3d(1, 1, 0));
acPts2dPoly.Add(new Point3d(1, 2, 0));
acPts2dPoly.Add(new Point3d(2, 2, 0));
acPts2dPoly.Add(new Point3d(3, 2, 0));
acPts2dPoly.Add(new Point3d(4, 4, 0));
foreach (Point3d acPt3d in acPts2dPoly)
{
var acVer2d = new Vertex2d(acPt3d, 0, 0, 0, 0);
acPoly2d.AppendVertex(acVer2d);
acTrans.AddNewlyCreatedDBObject(acVer2d, true);
}
// Set the normal of the 2D polyline
acPoly2d.Normal = new Vector3d(0, 1, 2);
// Get the first coordinate of the 2D polyline
var acPts3d = new Point3dCollection();
Vertex2d acFirstVer = null;
foreach (ObjectId acObjIdVert in acPoly2d)
{
acFirstVer = acTrans.GetObject(acObjIdVert,
OpenMode.ForRead) as Vertex2d;
acPts3d.Add(acFirstVer.Position);
break;
}
// Get the first point of the polyline and
// use the elevation for the Z value
var pFirstVer = new Point3d(acFirstVer.Position.X,
acFirstVer.Position.Y,
acPoly2d.Elevation);
// Translate the OCS to WCS
var mWPlane = Matrix3d.WorldToPlane(acPoly2d.Normal);
var pWCSPt = pFirstVer.TransformBy(mWPlane);
Autodesk.AutoCAD.ApplicationServices.Core.Application.ShowAlertDialog(
"The first vertex has the following " +
"coordinates:" +
"\nOCS: " + pFirstVer +
"\nWCS: " + pWCSPt);
// 提交事务
acTrans.Commit();
}
}
