XCLIP xrefs using ObjectARX

LoveArx

AcDbSpatialFilter 类设计用来做这个的，在AutoCAD重新生成图形（REGEN）的时候，通过 spatial filter 来决定要处理哪些对象。

下面代码是个简单的演示，注意：命令需要用 ACRX_CMD_NOINTERNALLOCK 选项 定义。

[it618postdisplay>0]

ACED_ARXCOMMAND_ENTRY_AUTO(CMyTestApp,
                           MyTestApp,
                           _MyClip, MyClip,
                           ACRX_CMD_TRANSPARENT |
                           ACRX_CMD_NOINTERNALLOCK,
                           NULL)

[/it618postdisplay]

1. static void MyTestApp_MyClip()
   
2. {
   
3.     ads_point pt1,pt2;
   
4.     ads_name ent;
   
5.     if (acedEntSel(_T("Select xref:"),ent,pt1)!=RTNORM)
   
6.         return;
   
7.     AcDbObjectId idXref;
   
8.     if (acdbGetObjectId(idXref,ent)!=Acad::eOk)
   
9.         return;
   
10.     AcDbObjectPointer<AcDbBlockReference> pRef(idXref,AcDb::kForRead);
    
11.     if (pRef.openStatus()!=Acad::eOk)
    
12.     {
    
13.         acutPrintf(_T("Not an xref!\n"));
    
14.         return;
    
15.     }
    
16.     AcGePoint2dArray pts;
    
17.     if (acedGetPoint(NULL,_T("First point:"),pt1)!=RTNORM)
    
18.         return;
    
19.     //the ECS of the vertices must be defined in the
    
20.     //coordinate system of the _block_ so let's calculate
    
21.     //transform all points to that coordinate system
    
22. 
    
23.     AcGeMatrix3d mat(pRef->blockTransform());
    
24.     mat.invert();
    
25. 
    
26.     AcGePoint3d pt3d(asPnt3d(pt1));
    
27.     pt3d.transformBy(mat);
    
28.     pts.append(AcGePoint2d(pt3d.x,pt3d.y));
    
29.     while (acedGetPoint(pt1,_T("Next point:"),pt2)==RTNORM)
    
30.     {
    
31.         acedGrDraw(pt1,pt2,1,1);
    
32.         pt3d = asPnt3d(pt2);
    
33.         pt3d.transformBy(mat);
    
34.         pts.append(AcGePoint2d(pt3d.x,pt3d.y));
    
35.         memcpy(pt1,pt2,sizeof(ads_point));
    
36.     }
    
37.     acedRedraw(NULL,0);
    
38.     AcDbDatabase* pDb = acdbHostApplicationServices()->workingDatabase();
    
39.     AcGeVector3d normal;
    
40.     double elev;
    
41.     if (pDb->tilemode())
    
42.     {
    
43.         normal = pDb->ucsxdir().crossProduct(pDb->ucsydir());
    
44.         elev = pDb->elevation();
    
45.     }
    
46.     else
    
47.     {
    
48.         normal = pDb->pucsxdir().crossProduct(pDb->pucsydir());
    
49.         elev = pDb->pelevation();
    
50.     }
    
51.     normal.normalize();
    
52.     Acad::ErrorStatus es = pRef.object()->upgradeOpen();
    
53.     if (es !=Acad::eOk)
    
54.         return;
    
55.     //create the filter
    
56.     AcDbSpatialFilter* pFilter = new AcDbSpatialFilter;
    
57.     if (pFilter->setDefinition(pts,normal,elev,
    
58.         ACDB_INFINITE_XCLIP_DEPTH,-ACDB_INFINITE_XCLIP_DEPTH,true)!=Acad::eOk)
    
59.     {
    
60.         delete pFilter;
    
61.         return;
    
62.     }
    
63.     //add it to the extension dictionary of the block reference
    
64.     //the AcDbIndexFilterManger class provides convenient utility functions
    
65.     if (AcDbIndexFilterManager::addFilter(pRef.object(),pFilter)!=Acad::eOk)
    
66.         delete pFilter;
    
67.     else
    
68.     {
    
69.         acutPrintf(_T("Filter has been succesfully added!\n"));
    
70.         pFilter->close();
    
71.     }
    
72. 
    
73. }
    

static void MyTestApp_MyClip()<br /> {<br />     ads_point pt1,pt2;<br />     ads_name ent;<br />     if (acedEntSel(_T("Select xref:"),ent,pt1)!=RTNORM)<br />         return;<br />     AcDbObjectId idXref;<br />     if (acdbGetObjectId(idXref,ent)!=Acad::eOk)<br />         return;<br />     AcDbObjectPointer<AcDbBlockReference> pRef(idXref,AcDb::kForRead);<br />     if (pRef.openStatus()!=Acad::eOk)<br />     {<br />         acutPrintf(_T("Not an xref!\n"));<br />         return;<br />     }<br />     AcGePoint2dArray pts;<br />     if (acedGetPoint(NULL,_T("First point:"),pt1)!=RTNORM)<br />         return;<br />     //the ECS of the vertices must be defined in the<br />     //coordinate system of the _block_ so let's calculate<br />     //transform all points to that coordinate system<br /> <br />     AcGeMatrix3d mat(pRef->blockTransform());<br />     mat.invert();<br /> <br />     AcGePoint3d pt3d(asPnt3d(pt1));<br />     pt3d.transformBy(mat);<br />     pts.append(AcGePoint2d(pt3d.x,pt3d.y));<br />     while (acedGetPoint(pt1,_T("Next point:"),pt2)==RTNORM)<br />     {<br />         acedGrDraw(pt1,pt2,1,1);<br />         pt3d = asPnt3d(pt2);<br />         pt3d.transformBy(mat);<br />         pts.append(AcGePoint2d(pt3d.x,pt3d.y));<br />         memcpy(pt1,pt2,sizeof(ads_point));<br />     }<br />     acedRedraw(NULL,0);<br />     AcDbDatabase* pDb = acdbHostApplicationServices()->workingDatabase();<br />     AcGeVector3d normal;<br />     double elev;<br />     if (pDb->tilemode())<br />     {<br />         normal = pDb->ucsxdir().crossProduct(pDb->ucsydir());<br />         elev = pDb->elevation();<br />     }<br />     else<br />     {<br />         normal = pDb->pucsxdir().crossProduct(pDb->pucsydir());<br />         elev = pDb->pelevation();<br />     }<br />     normal.normalize();<br />     Acad::ErrorStatus es = pRef.object()->upgradeOpen();<br />     if (es !=Acad::eOk)<br />         return;<br />     //create the filter<br />     AcDbSpatialFilter* pFilter = new AcDbSpatialFilter;<br />     if (pFilter->setDefinition(pts,normal,elev,<br />         ACDB_INFINITE_XCLIP_DEPTH,-ACDB_INFINITE_XCLIP_DEPTH,true)!=Acad::eOk)<br />     {<br />         delete pFilter;<br />         return;<br />     }<br />     //add it to the extension dictionary of the block reference<br />     //the AcDbIndexFilterManger class provides convenient utility functions<br />     if (AcDbIndexFilterManager::addFilter(pRef.object(),pFilter)!=Acad::eOk)<br />         delete pFilter;<br />     else<br />     {<br />         acutPrintf(_T("Filter has been succesfully added!\n"));<br />         pFilter->close();<br />     }<br /> <br /> }<br />

819534890

回复学习学习

炫翔

回复学习

LL_zZ

来看看这个xclip

xgr669

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cable2004

回复就是为了学习学习

liaotaofan

学习了 老铁

lhg

来看看这个xclip,有啥用途？

zeqi1991

回复学习学习

xinxirong

AcDbSpatialFilter

phi03c

thank sharing