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4 ?* j9 l" k, _+ m: Y: L0 {这是比较简单的部分了,可以参考现有书籍。在网上下载两个画线的函数: 直线: void LineCreate(AcGePoint3d ptStart,AcGePoint3d ptEnd). D) f6 j' w4 R* R& H O
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AcDbLine * pLine = new AcDbLine( ptStart , ptEnd );9 `. `/ O* T/ I# }5 }9 u3 J6 E+ O
// 获得指向块表的指针4 w o8 u; W# ^) R; w6 S3 N$ C
AcDbBlockTable *pBlockTable; acdbHostApplicationServices()->workingDatabase()
2 J, Q1 H" {; A/ b/ D/ S6 s- C->getBlockTable(pBlockTable, AcDb::kForRead);7 U" Z B' v6 d* ]8 O
// 获得指向特定的块表记录(模型空间)的指针1 K- W- J! S$ x/ H
AcDbBlockTableRecord *pBlockTableRecord;
* X7 k0 ?9 ]. MpBlockTable->getAt(ACDB_MODEL_SPACE, pBlockTableRecord, AcDb::kForWrite);
) F/ h/ {+ Y$ B$ m2 G// 将AcDbLine类的对象添加到块表记录中
' W1 d2 Y( s( e# @9 [AcDbObjectId lineId;
! y# f# j& e2 g; `; z# CpBlockTableRecord->appendAcDbEntity(lineId, pLine);
* Z. K# w( j" ~3 q7 l7 |// 关闭图形数据库的各种对象
+ o0 g: ^9 ?/ }" C; j0 M) [% ppBlockTable->close();
: v: T. t0 D: |" }pBlockTableRecord->close();
5 Z! ^8 j! Z p0 _- X3 G, QpLine->close();. z4 h7 r5 S7 F: ]9 F
}
# a) ~4 |4 Q' K3 |' n/ z9 }多线段:
# E3 i* b, S( kvoid CreatePolyline(AcGePoint2dArray points ,double width)% b) F. W; x+ s: r6 C; ?" `6 S
{
8 F) t% h" F- f$ F* |& f1 Yint numVertices = points.length();# j4 g0 K" [: k
AcDbPolyline *pPoly = new AcDbPolyline(numVertices);
' a$ X5 X. _9 L& ^ P- Y8 e' pfor (int i = 0; i < numVertices; i++)
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* G0 N: O6 O' G0 Y% b& ]pPoly->addVertexAt(i, points.at(i), 0, width, width);
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$ k9 ] {+ n' Q- \$ l. S) m/ G0 VAcDbObjectId polyId;4 \/ H% o) p" x0 L
polyId = PostToModelSpace(pPoly);% T7 e2 `$ V1 V" c# n: i4 a- b+ _
// return polyId;
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static AcDbObjectId PostToModelSpace(AcDbEntity* pEnt)# T8 h. Y% d" z; x) X
{
5 _4 r8 U; q# n' g. ^; c5 |" z% GAcDbBlockTable *pBlockTable;
( R8 ~5 U8 L9 m" y: h; ^, T* ZacdbHostApplicationServices()->workingDatabase() ->getBlockTable(pBlockTable, AcDb::kForRead);& v4 b3 d* i' Y* c" P
AcDbBlockTableRecord *pBlockTableRecord;
8 J5 n+ {! W3 Q1 T' {& t: [9 kpBlockTable->getAt(ACDB_MODEL_SPACE, pBlockTableRecord, AcDb::kForWrite);
" v& d( z8 Q" E bAcDbObjectId entId;
9 u2 X$ z) ~% _+ R/ g0 _9 DpBlockTableRecord->appendAcDbEntity(entId, pEnt);0 A/ Z, E0 N% b) H# n
pBlockTable->close();0 {3 k+ H# Q+ H' t1 b4 U9 _
pBlockTableRecord->close();
' L( [- A' _( O9 b2 e8 A2 M0 GpEnt->close();
3 Q$ |" q$ \% j. {4 r' @) Vreturn entId; }
% B, Q5 H; Y) e( |! X% k5 Z* f- R需要注意的是:创建线段与显示线段需要不同的代码。 参考:http://www.colinchou.com/archives/242$ }' E9 Z+ Y! X
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http://www.3dportal.cn/discuz/source/plugin/sina_xweibo_x3/xwb/images/bgimg/icon_logo.png 该贴已经同步到 colinzhoucn的微博 |