public void MyCommand() // This method can have any name
{
LayerStateManager LayerState = db.LayerStateManager;
int viewnum = 0;
ObjectId SaveTableID = InitialSave();
if (SaveTableID == ObjectId.Null)
{
ed.WriteMessage("\n遇到问题，无法创建存档...");
return;
}
int SaveNum = GetSave(SaveTableID);
if (SaveNum != InitialNum)
{
PromptIntegerOptions InputOption = new PromptIntegerOptions("\n回车继续上次的编号，或者输入新的视图起始编号");
InputOption.AllowNone = true;
InputOption.DefaultValue = SaveNum;
PromptIntegerResult InputRes = ed.GetInteger(InputOption);
if (InputRes.Status != PromptStatus.OK)
{
return;
}
viewnum = InputRes.Value;
}
else
{
PromptIntegerResult numres = ed.GetInteger("\n输入视图起始编号");
if (numres.Status != PromptStatus.OK)
{
return;
}
viewnum = numres.Value;
}
int counter = 0;
while (true)
{
inputstart:
PromptEntityOptions ops = new PromptEntityOptions("\n选择视图框");
ops.SetRejectMessage("\n只能选择封闭的矩形！");
ops.AddAllowedClass(typeof(Polyline), true);
ops.AllowNone = false;
ops.AllowObjectOnLockedLayer = true;
PromptEntityResult res = ed.GetEntity(ops);
if (res.Status != PromptStatus.OK)
{
if (counter != 0)
{
UpdateSave(SaveTableID, viewnum);
}
ed.WriteMessage("\n共创建{0}个视图。", counter);
break;
}
using (Transaction trans = db.TransactionManager.StartTransaction())
{
try
{
Polyline PL = trans.GetObject(res.ObjectId, OpenMode.ForRead) as Polyline;
if (PL.NumberOfVertices != 4 && !PL.Closed)
{
ed.WriteMessage("\n选择的不是封闭的矩形！");
goto inputstart;
}
Point3d P1 = PL.GetPoint3dAt(0);
Point3d P2 = PL.GetPoint3dAt(1);
Point3d P3 = PL.GetPoint3dAt(2);
Point3d P4 = PL.GetPoint3dAt(3);
Vector3d V1 = P1.GetVectorTo(P2);
Vector3d V2 = P2.GetVectorTo(P3);
Vector3d V3 = P3.GetVectorTo(P4);
Vector3d V4 = P4.GetVectorTo(P1);
if (!(V1.IsPerpendicularTo(V2) && V2.IsPerpendicularTo(V3) && V3.IsPerpendicularTo(V4)))
{
ed.WriteMessage("\n选择的不是封闭的矩形！");
goto inputstart;
}
Point2d CT = new Point2d((P1.X + P3.X) / 2, (P1.Y + P3.Y) / 2);
double H = 1;
double W = 1;
if (V1.Length > V4.Length)
{
H = V4.Length;
W = V1.Length;
}
else
{
H = V1.Length;
W = V4.Length;
}
Vector2d UserXaxix = new Vector2d(db.Ucsxdir.X, db.Ucsxdir.Y);
Vector2d WXaxix = new Vector2d(1, 0);
double TwistAngle = WXaxix.GetAngleTo(UserXaxix);
if (db.Ucsxdir.Y > 0)
{
TwistAngle = Math.PI * 2 - WXaxix.GetAngleTo(UserXaxix);
}
//Matrix2d WCS2DCS = Matrix2d.Rotation(new Vector2d(1, 0).GetAngleTo(UserXaxix),new Point2d(0,0));
Matrix2d WCS2DCS = Matrix2d.Rotation(TwistAngle, new Point2d(0, 0));
Point3d UcsCenter = db.Ucsorg;
//Point2d DcsCenter = new Point2d(UcsCenter.X, UcsCenter.Y).TransformBy(TransWCSToDCS);
Point2d DcsCenter = CT.TransformBy(WCS2DCS);
/*
* ed.WriteMessage("\n计算旋转角：{0}", WXaxix.GetAngleTo(UserXaxix));
* ed.WriteMessage("\nTwistAngle：{0}", TwistAngle);
* ed.WriteMessage("\nWCS的中点：{0}", CT.ToString());
* ed.WriteMessage("\nUCS的中点:{0}", new Point3d(CT.X,CT.Y,0).TransformBy(ed.CurrentUserCoordinateSystem).ToString());
* ed.WriteMessage("\nDCS的中点：{0}", DcsCenter.ToString());
*/
SymbolTable VT = trans.GetObject(db.ViewTableId, OpenMode.ForWrite) as SymbolTable;
if (VT.Has(viewnum.ToString()))
{
foreach (ObjectId viewid in VT)
{
ViewTableRecord VR = trans.GetObject(viewid, OpenMode.ForWrite) as ViewTableRecord;
if (VR.Name == viewnum.ToString())
{
VR.Erase();
break;
}
}
}
ViewTableRecord NewVr = new ViewTableRecord();
NewVr.Name = viewnum.ToString();
NewVr.CenterPoint = DcsCenter;
NewVr.Height = H;
NewVr.Width = W;
NewVr.ViewTwist = TwistAngle;
NewVr.SetUcs(db.Ucsorg, db.Ucsxdir, db.Ucsydir);
VT.Add(NewVr);
trans.AddNewlyCreatedDBObject(NewVr, true);
//添加图层快照属性要在把view添加到数据库里后再操作，要不会报错eNoDataBase...
string LayerStateName = string.Format("ACAD_VIEWS_{0}", NewVr.Name);
//已有同名那就删掉
if (LayerState.HasLayerState(LayerStateName))
{
LayerState.DeleteLayerState(LayerStateName);
}
LayerState.SaveLayerState(LayerStateName, LayerStateMasks.None, new ObjectId());
NewVr.LayerState = LayerStateName;
trans.Commit();
ed.WriteMessage("\n成功创建编号为{0}的视图。", viewnum);
viewnum++;
counter++;
}
catch (Autodesk.AutoCAD.Runtime.Exception EX)
{
ed.WriteMessage("\n出错了！{0}", EX.ToString());
}
finally
{
trans.Dispose();
}
}
}
}
