[求助]自定义块的填充问题

ydp_00769

自已定义了一个块，将其画出并返回ObjectId。
根据返回的块ID，进行填充操作，代码如下：

2. public static void SetHatchPattern(Database acCurDb,ObjectId objEnt)
3. {
5. // Start a transaction
6. using (Transaction acTrans = acCurDb.TransactionManager.StartTransaction())
7. {
8. // Open the Block table for read
9. BlockTable acBlkTbl;
10. acBlkTbl = acTrans.GetObject(acCurDb.BlockTableId,
11. OpenMode.ForRead) as BlockTable;
13. // Open the Block table record Model space for write
14. BlockTableRecord acBlkTblRec;
15. acBlkTblRec = acTrans.GetObject(acBlkTbl[BlockTableRecord.ModelSpace],
16. OpenMode.ForWrite) as BlockTableRecord;
18. // Adds the arc and line to an object id collection
19. ObjectIdCollection acObjIdColl = new ObjectIdCollection();
20. acObjIdColl.Add(objEnt);
22. // Create the hatch object and append it to the block table record
23. Hatch acHatch = new Hatch();
24. acBlkTblRec.AppendEntity(acHatch);
25. acTrans.AddNewlyCreatedDBObject(acHatch, true);
27. acHatch.SetDatabaseDefaults();
28. acHatch.ColorIndex = 1;
30. //acHatch.SetHatchPattern(HatchPatternType.PreDefined, "ANSI31");
31. acHatch.SetHatchPattern(HatchPatternType.PreDefined, "SOLID");//实心填充，直接用设置的颜色
32. acHatch.Associative = true;
33. acHatch.AppendLoop(HatchLoopTypes.Outermost, acObjIdColl);
35. // Evaluate the hatch
36. acHatch.EvaluateHatch(true);
38. // Increase the pattern scale by 2 and re-evaluate the hatch
39. acHatch.PatternScale = acHatch.PatternScale + 2;
40. acHatch.SetHatchPattern(acHatch.PatternType, acHatch.PatternName);
41. acHatch.EvaluateHatch(true);
43. // Save the new object to the database
44. acTrans.Commit();
45. }
46. }

public static void SetHatchPattern(Database acCurDb,ObjectId objEnt) { // Start a transaction using (Transaction acTrans = acCurDb.TransactionManager.StartTransaction()) { // Open the Block table for read BlockTable acBlkTbl; acBlkTbl = acTrans.GetObject(acCurDb.BlockTableId, OpenMode.ForRead) as BlockTable; // Open the Block table record Model space for write BlockTableRecord acBlkTblRec; acBlkTblRec = acTrans.GetObject(acBlkTbl[BlockTableRecord.ModelSpace], OpenMode.ForWrite) as BlockTableRecord; // Adds the arc and line to an object id collection ObjectIdCollection acObjIdColl = new ObjectIdCollection(); acObjIdColl.Add(objEnt); // Create the hatch object and append it to the block table record Hatch acHatch = new Hatch(); acBlkTblRec.AppendEntity(acHatch); acTrans.AddNewlyCreatedDBObject(acHatch, true); acHatch.SetDatabaseDefaults(); acHatch.ColorIndex = 1; //acHatch.SetHatchPattern(HatchPatternType.PreDefined, "ANSI31"); acHatch.SetHatchPattern(HatchPatternType.PreDefined, "SOLID");//实心填充，直接用设置的颜色 acHatch.Associative = true; acHatch.AppendLoop(HatchLoopTypes.Outermost, acObjIdColl); // Evaluate the hatch acHatch.EvaluateHatch(true); // Increase the pattern scale by 2 and re-evaluate the hatch acHatch.PatternScale = acHatch.PatternScale + 2; acHatch.SetHatchPattern(acHatch.PatternType, acHatch.PatternName); acHatch.EvaluateHatch(true); // Save the new object to the database acTrans.Commit(); } }

当执行
acHatch.AppendLoop(HatchLoopTypes.Outermost, acObjIdColl);
时，总是报错，不知是为什么啊？请高手指教！！！急

sieben

图块？填充？

为什么不用一个封闭曲线测试一下你的代码？

ydp_00769

这个图块是由封闭曲线组成的啊，

之所以用图块，是因为所绘图形由一批这种自定义的图块组成。

就是想在这些图块插入后，给它们的封闭区间填充，然后就出错

雪山飞狐_lzh

Hatch的边界只能是曲线集合或多义线

chpmould

现在还看不懂，但一定要顶

ydp_00769

问题解决了，搞了好久，ObjectIdCollection集合中加入line，只要封闭是可以填充的。polyline加入到集合中也不能填，问题虽解决，但还是没搞懂这一点：

1. //========图块填充============
2. BlockTableRecordEnumerator enume = record.GetEnumerator();//获取块中图元对象计数器
3. ObjectIdCollection ids = new ObjectIdCollection();
4. while (enume.MoveNext())
5. {
6. DBObject dbobj = trans.GetObject(enume.Current, OpenMode.ForRead);
7. if (dbobj.GetType() == typeof(Line))
8. {
9. ids.Add(dbobj.ObjectId);
10. }
11. }
13. List<ObjectIdCollection> IDS = new List<ObjectIdCollection>();
14. IDS.Add(ids);
15. //填充图块
16. CDraw.HatchObject(db, trans, record, IDS, "SOLID", eColor.Red);
17. //============================
19. //填充指定实体
20. public static void HatchObject(Database db,Transaction trans,BlockTableRecord btr,List<ObjectIdCollection> IDS,string strHatchPattern,eColor color)
21. {
22. Hatch acHatch = new Hatch();
23. acHatch.SetDatabaseDefaults();
24. acHatch.ColorIndex = (int)color;
25. acHatch.SetHatchPattern(HatchPatternType.PreDefined, strHatchPattern);//实心填充，直接用设置的颜色
26. //acHatch.Associative = true;
27. foreach (ObjectIdCollection ids in IDS)
28. {
29. acHatch.InsertLoopAt(0, HatchLoopTypes.Default, ids);
30. }
32. BlockTable bt1 = trans.GetObject(db.BlockTableId, OpenMode.ForRead) as BlockTable;
33. BlockTableRecord btr1 = trans.GetObject(bt1[BlockTableRecord.ModelSpace], OpenMode.ForWrite) as BlockTableRecord;
35. btr.AppendEntity(acHatch);
36. trans.AddNewlyCreatedDBObject(acHatch, true);
37. }

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