{"id":1073,"date":"2021-09-19T00:13:17","date_gmt":"2021-09-18T16:13:17","guid":{"rendered":"http:\/\/www.mustenaka.cn\/?p=1073"},"modified":"2021-09-19T00:17:14","modified_gmt":"2021-09-18T16:17:14","slug":"cad-mline-csharp-teigha","status":"publish","type":"post","link":"https:\/\/www.mustenaka.cn\/index.php\/2021\/09\/19\/cad-mline-csharp-teigha\/","title":{"rendered":"CAD Mline \u8bb0\u5f55\uff08Teigha\uff0c\u591a\u7ebf\uff0cC#\u7f16\u7a0b\uff09"},"content":{"rendered":"

\u8fd9\u662f\u4e00\u4e9b\u6bd4\u8f83\u6563\u4e71\u7684\u5173\u4e8eMline\u7684\u8bb0\u5f55\uff0c\u9700\u8981\u7528\u5230C#\u7684Teigha\uff08CAD\uff09\u5e93\u8fdb\u884c\u64cd\u4f5c\uff0c\u6211\u9700\u8981\u5bf9\u4e00\u4e9bMline\u81ea\u52a8\u5224\u9898\u7684\u6548\u679c\uff0c\u628a\u9519\u8bef\u7684\u7ed8\u5236\u5728\u53e6\u4e00\u4e2a\u56fe\u5c42\u663e\u793a\u51fa\u6765\uff0c\u7531\u4e8eTeigha\u9700\u8981using\u7684\u5173\u7cfb\uff0c\u6211\u5728\u8bbe\u8ba1\u7684\u4e00\u5f00\u59cb\u91c7\u7528\u4e86\u81ea\u5efa\u57fa\u672c\u6570\u636e\u7c7b\u578b\uff0c\u591a\u6b21\u8fdb\u884cusing\u8bbf\u95ee\u7684\u65b9\u5f0f\u8fdb\u884c\u6570\u636e\u63d0\u53d6\u64cd\u4f5c\uff0c\u7136\u800c\u8fd9\u6837\u7684\u8bbe\u8ba1\u5728\u53e6\u4e00\u4e2a\u56fe\u5c42\u7ed8\u5236\u7684\u65f6\u5019\uff0cMline\u8fd9\u4e2a\u65b9\u6cd5\u5374\u591a\u6b21\u9020\u6210\u4e86\u6211\u5f00\u53d1\u7684\u56f0\u5883\u3002<\/p>\n

\u56e0\u6b642021.9.16~2021.9.18\u8fd9\u4e09\u5929\u7684\u5de5\u4f5c\u5185\u5bb9\u505a\u4e00\u4e2a\u6c47\u603b\u7684\u7b14\u8bb0\uff1a<\/p>\n

1.\u591a\u7ebf\u548c\u591a\u7ebf\u6bb5\u7684\u533a\u522b<\/h3>\n

\u591a\u7ebf\u6bb5polyline\uff0c\u65e9\u671f\u7684CAD\u7ed8\u5236\u8fde\u7eed\u7ebf\u6bb5\u7684\u6982\u5ff5\uff0c\u53ef\u4ee5\u6dfb\u52a0\u5706\u5f27\uff0c\u4fee\u6539\u7ebf\u6027\u7b49\u64cd\u4f5c\uff0c\u5c5e\u4e8e\u6bd4\u8f83\u65e9\u671f\u7684\u521b\u5efa\u65b9\u5f0f\u3002<\/p>\n

\u591a\u7ebfmline\uff0c\u589e\u52a0\u66f4\u591a\u529f\u80fd\u7684polyline\uff0c\u62e5\u6709\u66f4\u591a\u7684\u529f\u80fd\uff0c\u4f7f\u7528\u9700\u8981\u5b9a\u4e49\u4f7f\u7528\u4e00\u4e2amlineStyle\uff08\u591a\u7ebf\u6837\u5f0f\uff09\uff0c\u8fdb\u884c\u521b\u5efa\uff0c\u6bd4\u5982\u672c\u9879\u76ee\u9700\u8981\u521b\u5efa\u7684\u591a\u7ebf\u5c31\u5fc5\u987b\u7528\u5230mline\uff0c\u5176\u5c5e\u4e8e\u4e00\u4e2a\u591a\u91cd\u7ebf\u6bb5\u6548\u679c\u662f\u8fd9\u6837\uff1a<\/p>\n

\"\"<\/p>\n

\uff08\u5982\u56fe\u6548\u679c\uff0c\u591a\u6761\u5e73\u884c\u7ebf\u6784\u6210\u7684\u591a\u7ebf\u6548\u679c\uff09<\/p>\n

\u4e2d\u6587\u7f51\u4e0a\u5173\u4e8e\u591a\u7ebf\u7684\u8d44\u6e90\u5f80\u5f80\u63cf\u8ff0\u4e3apolyline<\/strong>\u800c\u4e0d\u662fmline\uff0c\u8fd9\u4f7f\u5f97\u6211\u5728\u627e\u76f8\u5173\u8d44\u6599\u7684\u65f6\u5019\u53d8\u5f97\u5341\u5206\u96be\u53d7\u3002<\/p>\n

2.\u5b98\u65b9\u5bf9\u4e8emline\u4e00\u4e9b\u5e38\u7528\u529f\u80fd\u7684\u63cf\u8ff0<\/h3>\n

\u53c2\u8003\u94fe\u63a5\uff0c\u4e0b\u9762\u5185\u5bb9\u4e3a\u673a\u68b0\u7ffb\u8bd1 + \u4e00\u4e9b\u81ea\u5df1\u7684\u89c1\u89e3\uff1a<\/p>\n

https:\/\/knowledge.autodesk.com\/support\/autocad\/learn-explore\/caas\/CloudHelp\/cloudhelp\/2016\/ENU\/AutoCAD-Core\/files\/GUID-A6839A41-0D81-44F2-953A-220307F9380A-htm.html<\/a><\/p>\n

\u521b\u5efa\u591a\u6761\u5e73\u884c\u7ebf\u6bb5<\/p>\n

\n
\n

Start point\uff1a\u8d77\u70b9<\/p>\n

\u6307\u5b9a\u591a\u7ebf\u7684\u4e0b\u4e00\u4e2a\u9876\u70b9\u3002\u5982\u679c\u521b\u952e\u5177\u6709\u591a\u4e2a\u7ebf\u6bb5\u7684\u591a\u7ebf\uff0c\u63d0\u793a\u5c06\u4f1a\u5305\u62ecClose\uff08\u95ed\u5408\uff09\u9009\u9879<\/p>\n

<\/div>\n
\n
Next point\uff1a\u4e0b\u4e00\u4e2a\u70b9<\/dt>\n
\u5c06\u4e0b\u4e00\u4e2a\u70b9\u4f5c\u4e3a\u7ee7\u7eed\u8f93\u5165\u7684\u70b9<\/dt>\n
<\/dt>\n
Undo: \u64a4\u9500Next Point\u64cd\u4f5c<\/dt>\n
Close: \u95ed\u5408\uff0c\u5c06\u6240\u521b\u5efa\u7684\u70b9\u81ea\u52a8\u95ed\u5408<\/dt>\n
<\/dt>\n<\/dl>\n<\/div>\n
\n

Justification<\/p>\n

\u786e\u5b9a\u5982\u4f55\u5728\u6307\u5b9a\u7684\u70b9\u4e4b\u95f4\u7ed8\u5236\u591a\u7ebf\uff0c\u5206\u522b\u6709\u5982\u4e0b\u65b9\u6cd5\u6784\u6210\uff1a<\/p>\n

    \n
  • Top<\/li>\n
  • Zero<\/li>\n
  • Bottom<\/li>\n<\/ul>\n
    \n
    Top: \u5728\u5149\u6807\u4e0b\u65b9\u7ed8\u5236\u591a\u7ebf\uff0c\u4ee5\u4fbf\u5177\u6709\u6700\u5927\u6b63\u504f\u79fb\u7684\u7ebf\u4f4d\u4e8e\u6307\u5b9a\u70b9\u5904\u3002<\/dt>\n
    \n

    <\/p>\n<\/dd>\n

    Zero: \u4ee5\u5149\u6807\u4e3a\u4e2d\u5fc3\u7ed8\u5236\u591a\u7ebf\uff0c\u4f7f MLSTYLE \u5143\u7d20\u5c5e\u6027\u504f\u79fb\u91cf\u4e3a 0.0 \u4f4d\u4e8e\u6307\u5b9a\u70b9\u3002<\/dt>\n
    \n

    <\/p>\n<\/dd>\n

    Bottom: \u5728\u5149\u6807\u4e0a\u65b9\u7ed8\u5236\u591a\u7ebf\uff0c\u4ee5\u4fbf\u5177\u6709\u6700\u5927\u8d1f\u504f\u79fb\u7684\u7ebf\u4f4d\u4e8e\u6307\u5b9a\u70b9\u5904\u3002<\/dt>\n
    \n
    <\/div>\n<\/dd>\n<\/dl>\n<\/div>\n
    \n

    Scale\uff1a\uff08\u7f29\u653e\uff09<\/p>\n

    \u5728\u4e00\u4e9b\u7f51\u4e0a\u641c\u7d22\u5173\u4e8emline\u7684\u4f8b\u5b50\uff0c\u57fa\u672c\u4e0a\u6bcf\u4e00\u4e2amline\u7684\u521b\u5efa\u90fd\u9700\u8981\u624b\u52a8\u6307\u5b9a<\/p>\n

    mline.scale = 0; \/\/ \u8868\u793a\u5355\u6839\u7ebf<\/p>\n

    mline.scale = 1; \/\/ \u8868\u793a\u5df2\u88ab\u7684\u7ebf\u5bbd<\/p><\/blockquote>\n

    \u539f\u6587\uff1a<\/p>\n

    \n

    Controls the overall width of the multiline. This scale does not affect linetype scale.<\/p>\n

     <\/p>\n

    The scale factor is based on the width established in the multiline style definition. A scale factor of 2 produces a multiline twice as wide as the style definition. A negative scale factor flips the order of the offset line\u2014the smallest on top when the multiline is drawn from left to right. A negative scale value also alters the scale by the absolute value. A scale factor of 0 collapses the multiline into a single line.<\/p>\n<\/blockquote>\n

    \u63a7\u5236\u591a\u7ebf\u7684\u603b\u5bbd\u5ea6\u3002 \u6b64\u6bd4\u4f8b\u4e0d\u4f1a\u5f71\u54cd\u7ebf\u578b\u6bd4\u4f8b\u3002<\/p>\n

    \u6bd4\u4f8b\u56e0\u5b50\u57fa\u4e8e\u591a\u7ebf\u6837\u5f0f\u5b9a\u4e49\u4e2d\u5efa\u7acb\u7684\u5bbd\u5ea6\u3002 \u6bd4\u4f8b\u56e0\u5b50\u4e3a 2 \u4f1a\u4ea7\u751f\u4e24\u500d\u4e8e\u6837\u5f0f\u5b9a\u4e49\u5bbd\u5ea6\u7684\u591a\u884c\u3002 \u8d1f\u6bd4\u4f8b\u56e0\u5b50\u4f1a\u7ffb\u8f6c\u504f\u79fb\u7ebf\u7684\u987a\u5e8f\u2014\u2014\u5f53\u4ece\u5de6\u5230\u53f3\u7ed8\u5236\u591a\u7ebf\u65f6\uff0c\u504f\u79fb\u7ebf\u7684\u987a\u5e8f\u662f\u6700\u5c0f\u7684\u3002 \u8d1f\u6bd4\u4f8b\u503c\u4e5f\u4f1a\u6309\u7edd\u5bf9\u503c\u6539\u53d8\u6bd4\u4f8b\u3002 \u6bd4\u4f8b\u56e0\u5b50\u4e3a 0 \u4f1a\u5c06\u591a\u884c\u6298\u53e0\u4e3a\u5355\u884c\u3002<\/p>\n

    <\/div>\n<\/div>\n
    \n

    Style :\u6307\u5b9a\u7528\u4e8e\u591a\u7ebf\u7684\u6837\u5f0f\u3002<\/p>\n<\/div>\n

    3.\u76f8\u5173\u7684\u4ee3\u7801<\/h3>\n

    \u5728\u4e00\u4e2a\u6848\u4f8b\u4e2d\uff0cmline\u521b\u5efa\u4e3a\uff1a<\/p>\n<\/div>\n

    Mline mine = (Mline)TemporaryEnt;  \/\/ \u4ece\u4e34\u65f6\u5b9e\u4f53\u4e2d\u521b\u5efa\r\nmine.Scale = 0;\r\nif (mine.NumberOfVertices <= 1)\r\n{\r\n    mine.AppendSegment(toEyeToWorld(X, Y));\r\n}\r\nelse\r\n{\r\n    Point3d po = mine.VertexAt(mine.NumberOfVertices - 1);\r\n    mine.RemoveLastSegment(out po);\r\n    mine.AppendSegment(toEyeToWorld(X, Y));\r\n}\r\n\/\/toEyeToWorld \u4e3a\u901a\u8fc7\u663e\u793a\u754c\u9762\u8fd4\u56de\u5b9e\u9645\u753b\u5e03\u7684\u4e09\u7ef4\u5750\u6807\u503c\uff08Z\u4e3a0\uff09<\/code><\/pre>\n
    \u6211\u9700\u8981\u521b\u5efa\u56db\u6761\u7ebf\u7684\u6570\u636e\uff0c\u83b7\u53d6\u591a\u7ebf\u7ebf\u6570\u7684\u65b9\u5f0f\u662f mline.Elements.Count; \u7136\u800c\u5c31\u5982\u540cList\u65b9\u6cd5\u4e00\u6837\uff0c\u8fd9\u662f\u53ea\u80fdget\u7684\uff0c\u56e0\u800c\uff0c\u5177\u4f53\u521b\u5efa\u591a\u7ebf\u6570\u7684\u8868\u793a\u65b9\u6cd5\u5c31\u9700\u8981\u624b\u52a8\u521b\u5efaELements\u7684\u7ec6\u8282\u5b9e\u73b0\uff0c\u7136\u800c\u8fd9\u4e2a\u975e\u5e38\u7684\u56f0\u96be\uff08\u7f3a\u5c11\u5177\u4f53\u6548\u679c\u7684\u8d44\u6599\uff09\uff0c\u4ece\u800c\u6211\u6539\u6210\uff0c\u57fa\u4e8e\u539f\u59cb\u9519\u8bef\u7684\u591a\u7ebf\u8fdb\u884c\u590d\u5236\u3002<\/p>\n
    \u63a5\u4e0b\u6765\u7684\u95ee\u9898\u5c31\u51fa\u73b0\u4e86\uff0c\u5f53\u521d\u4e3a\u4e86\u83b7\u53d6\u4fe1\u606f\u7684\u7b80\u7565\uff0c\u6211\u91c7\u7528\u81ea\u5df1\u521b\u5efa\u6570\u636e\u57fa\u7c7b\u7684\u65b9\u5f0f\u5b58\u50a8\u6570\u636e\uff0c\uff08\u53ea\u4fdd\u5b58\u6211\u9700\u8981\u7b5b\u9009\u7684\u5173\u952e\u6570\u636e\uff09\u800c\u907f\u514d\u591a\u6b21\u904d\u5386\u9020\u6210\u7684\u4ee3\u7801\u5197\u4f59\uff0c\u800c\u5728\u6b64\u65f6\u7ed8\u5236\u7684\u65f6\u5019\uff0c\u5df2\u7ecf\u8131\u79bb\u4e86\u539f\u6709\u7684using\u7a7a\u95f4\u533a\u57df\u4e86\uff0c\u540e\u7eed\uff0c\u6211\u60f3\u4e86\u4e00\u4e2a\u529e\u6cd5\uff0c\u5b58\u50a8\u6bcf\u4e00\u4e2avet_point\uff08\u591a\u7ebf\u7684\u7aef\u70b9\uff09\u7684\u5750\u6807\uff0c\u904d\u5386\u4e24\u6b21\u8fdb\u884c\u6bd4\u5bf9\uff0c\u8fd9\u6837\u7684\u7f3a\u70b9\u662f\u4f7f\u7528\u4e86\u66f4\u591a\u7684\u5185\u5b58\uff0c\u548cCPU\u4f7f\u7528\uff0c\u4f46\u662f\u4f5c\u4e3a\u4e00\u4e2a\u53d6\u5de7\u7684\u65b9\u5f0f\uff0c\u6700\u7ec8\u8fd8\u662f\u5b9e\u73b0\u4e86\u9519\u8bef\u591a\u7ebf\u7684\u5b9a\u4f4d\u5e76\u4e14\u5728\u5176\u4ed6\u7684\u56fe\u5c42\u7ed8\u5236\u51fa\u6765\u6548\u679c\u3002<\/p>\n
    \u53c2\u8003\u7684\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
                using (var trans = database.TransactionManager.StartTransaction())\r\n            {\r\n                BlockTableRecord btrec = trans.GetObject(database.CurrentSpaceId, OpenMode.ForWrite) as BlockTableRecord;\r\n                \/\/ \u8f6c\u6362\u6210\u5b9e\u4f53\r\n                foreach(ObjectId objid in btrec)\r\n                {\r\n                    Entity ent = trans.GetObject(objid, OpenMode.ForWrite) as Entity;\r\n                    if (ent.GetType().Name.Contains(\"Mline\"))\r\n                    {\r\n                        Mline dbtxta = (Mline)ent;\r\n                        if (dbtxta.Layer != ori_layer) continue;\r\n                        MlineStyle mlsta = ((MlineStyle)dbtxta.Style.GetObject(OpenMode.ForRead));  \/\/ \u591a\u7ebf\u6837\u5f0f\r\n                        bool flag = true;\r\n                        for (int i = 0; i < dbtxta.NumberOfVertices && xyz.Count == dbtxta.NumberOfVertices; i++)\r\n                        {\r\n                            \/\/ \u5982\u679c\u5b58\u5728\u4e00\u4e2a\u4e0d\u6ee1\u8db3,\u5219\u7f6eflag\u4e3a\u5426\r\n                            if(xyz[i].X != dbtxta.VertexAt(i).X || \r\n                                xyz[i].Y != dbtxta.VertexAt(i).Y ||\r\n                                xyz[i].Z != dbtxta.VertexAt(i).Z)\r\n                            {\r\n                                flag = false;\r\n                            }\r\n                        }\r\n                        \/\/ \u5982\u679c\u8be5\u7ebf\u6bb5\u6ee1\u8db3\u4f4d\u7f6e\u8981\u6c42\uff0c\u5219\u590d\u5236\u4e00\u4e2a\u65b0\u7684\u653e\u5728\u9519\u8bef\u56fe\u5c42\u4e2d\r\n                        if (flag)\r\n                        {\r\n                            \/\/ \u901a\u8fc7\u62f7\u8d1d\u7684\u65b9\u5f0f\u5728\u65b0\u56fe\u5c42\u521b\u5efa\u8fd9\u4e2a\u53d8\u91cf\r\n                            Mline mline = dbtxta.Clone() as Mline;\r\n                            btrec.AppendEntity(mline);\r\n                            mline.Layer = LayerName;    \/\/ \u6dfb\u52a0\u5230\u56fe\u5c42\r\n                            trans.AddNewlyCreatedDBObject(mline, true);\r\n                        }\r\n                    }\r\n\r\n                }\r\n                \/\/ \u4e8b\u52a1\u63d0\u4ea4\r\n                trans.Commit();\r\n                \/\/ \u4fdd\u5b58\r\n                database.Save();\r\n            }<\/code><\/pre>\n
    xyz\u7ed3\u6784\uff0c\u53ea\u662f\u81ea\u5df1\u8bbe\u8ba1\u7684\u5feb\u6377\u5b58\u50a8\u4e86double x,double y,double z\u8fd9\u4e09\u4e2a\u53d8\u91cf\uff0c\u6ca1\u6709\u76f4\u63a5\u4f7f\u7528Point3D<\/p>\n
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