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