[求助]请教一个填充的问题？

ydp_00769

该图是我做的一个自定义块（由一椭圆、一条直线、一段圆弧封闭组成），块定义代码如下：

2. public ObjectId CreateStation(Database db, string strBlockName, double dRadius, double dLength, Point3d pt1, double dZxlc, double dStartAngle, double dEndAngle)
   
3. {
   
4. ObjectId blockId = ObjectId.Null;
   
5. BlockTableRecord record = new BlockTableRecord();
   
6. record.Name = strBlockName;
   
7. using (Transaction trans = db.TransactionManager.StartTransaction())
   
8. {
   
9. Point3d pStart = new Point3d(0, 0, 0);//块基点
   
10. Point3d pEnd = new Point3d(0, dLength, 0);//结束点
    
11. Point3d ptCir = new Point3d(0, dLength - dRadius, 0);
    
12. 
    
13. Vector3d vec1 = new Vector3d(0, dRadius, 0);
    
14. //Vector3d vec2 = new Vector3d(-6, 0, 0);
    
15. Ellipse eLL = new Ellipse(ptCir, Vector3d.ZAxis, vec1, 0.7, 0, 0);
    
16. Line lLen = new Line(pStart, pEnd);
    
17. 
    
18. //车站图例上文字标注
    
19. Point3d ptText = new Point3d(pt1.X, pt1.Y - dRadius * 2,0);
    
20. DBText txt = new DBText();
    
21. txt.TextString = Public.PublicClass.ConvertDmlc(CGlobal.GC, dZxlc);
    
22. txt.WidthFactor = 1;
    
23. txt.Height = 3;
    
24. //txt.ColorIndex = iColor;
    
25. txt.VerticalMode = TextVerticalMode.TextVerticalMid;
    
26. txt.HorizontalMode = TextHorizontalMode.TextMid;
    
27. txt.AlignmentPoint = ptText;
    
28. //txt.LayerId = layerId;
    
29. txt.Rotation = 90 * CMath.dConvertAngle;
    
30. 
    
31. //加入半圆
    
32. Arc objArc = new Arc(ptCir, dRadius * 0.5, dStartAngle, dEndAngle);
    
33. 
    
34. //块记录定义
    
35. record.Origin = pStart;//设置块基点
    
36. record.AppendEntity(eLL);
    
37. record.AppendEntity(lLen);
    
38. record.AppendEntity(txt);
    
39. record.AppendEntity(objArc);
    
40. BlockTable bt = (BlockTable)trans.GetObject(db.BlockTableId, OpenMode.ForWrite);
    
41. if (!bt.Has(strBlockName))//判断是否存在同名块
    
42. {
    
43. blockId = bt.Add(record);
    
44. trans.AddNewlyCreatedDBObject(record, true);
    
45. 
    
46. //========图块填充============
    
47. BlockTableRecordEnumerator enume = record.GetEnumerator();//获取块中图元对象计数器
    
48. ObjectIdCollection ids1 = new ObjectIdCollection();
    
49. int i = 0;
    
50. while (enume.MoveNext())
    
51. {
    
52. DBObject dbobj = trans.GetObject(enume.Current, OpenMode.ForRead);
    
53. 
    
54. ids1.Add(dbobj.ObjectId);
    
55. }
    
56. 
    
57. List<ObjectIdCollection> IDS = new List<ObjectIdCollection>();
    
58. IDS.Add(ids1);
    
59. //填充图块
    
60. //CDraw.HatchObject(db, trans, record, IDS, "SOLID", eColor.White);
    
61. //============================
    
62. 
    
63. trans.Commit();
    
64. }
    
65. }
    
66. return blockId;
    
67. }

public ObjectId CreateStation(Database db, string strBlockName, double dRadius, double dLength, Point3d pt1, double dZxlc, double dStartAngle, double dEndAngle)<br /> {<br /> ObjectId blockId = ObjectId.Null;<br /> BlockTableRecord record = new BlockTableRecord();<br /> record.Name = strBlockName;<br /> using (Transaction trans = db.TransactionManager.StartTransaction())<br /> {<br /> Point3d pStart = new Point3d(0, 0, 0);//块基点<br /> Point3d pEnd = new Point3d(0, dLength, 0);//结束点<br /> Point3d ptCir = new Point3d(0, dLength - dRadius, 0);<br /> <br /> Vector3d vec1 = new Vector3d(0, dRadius, 0);<br /> //Vector3d vec2 = new Vector3d(-6, 0, 0);<br /> Ellipse eLL = new Ellipse(ptCir, Vector3d.ZAxis, vec1, 0.7, 0, 0);<br /> Line lLen = new Line(pStart, pEnd);<br /> <br /> //车站图例上文字标注<br /> Point3d ptText = new Point3d(pt1.X, pt1.Y - dRadius * 2,0);<br /> DBText txt = new DBText();<br /> txt.TextString = Public.PublicClass.ConvertDmlc(CGlobal.GC, dZxlc);<br /> txt.WidthFactor = 1;<br /> txt.Height = 3;<br /> //txt.ColorIndex = iColor;<br /> txt.VerticalMode = TextVerticalMode.TextVerticalMid;<br /> txt.HorizontalMode = TextHorizontalMode.TextMid;<br /> txt.AlignmentPoint = ptText;<br /> //txt.LayerId = layerId;<br /> txt.Rotation = 90 * CMath.dConvertAngle;<br /> <br /> //加入半圆<br /> Arc objArc = new Arc(ptCir, dRadius * 0.5, dStartAngle, dEndAngle);<br /> <br /> //块记录定义<br /> record.Origin = pStart;//设置块基点<br /> record.AppendEntity(eLL);<br /> record.AppendEntity(lLen);<br /> record.AppendEntity(txt);<br /> record.AppendEntity(objArc);<br /> BlockTable bt = (BlockTable)trans.GetObject(db.BlockTableId, OpenMode.ForWrite);<br /> if (!bt.Has(strBlockName))//判断是否存在同名块<br /> {<br /> blockId = bt.Add(record);<br /> trans.AddNewlyCreatedDBObject(record, true);<br /> <br /> //========图块填充============<br /> BlockTableRecordEnumerator enume = record.GetEnumerator();//获取块中图元对象计数器<br /> ObjectIdCollection ids1 = new ObjectIdCollection();<br /> int i = 0;<br /> while (enume.MoveNext())<br /> {<br /> DBObject dbobj = trans.GetObject(enume.Current, OpenMode.ForRead);<br /> <br /> ids1.Add(dbobj.ObjectId);<br /> }<br /> <br /> List<ObjectIdCollection> IDS = new List<ObjectIdCollection>();<br /> IDS.Add(ids1);<br /> //填充图块<br /> //CDraw.HatchObject(db, trans, record, IDS, "SOLID", eColor.White);<br /> //============================<br /> <br /> trans.Commit();<br /> }<br /> }<br /> return blockId;<br /> }

请问，如果实现阴影部分的填充？我把该块的组成图元：圆弧、直线、椭圆添加到objectidcollection中，填充时则报错：eillegalityinput。

ydp_00769

着急啊，请求大家的帮助，自已顶一下

ydp_00769

搞定了，由一个内圈的弧、一个外圈的弧、两个弧中间的两个线段组成的封闭区间，这种情况下，可以填充。

雪山飞狐_lzh

没错，填充区域必须是首尾相连的封闭区间

chpmould

楼主可以将你修正好的代码贴上来学习以下吗。。。