【转帖】explode a blockreference
 

explode a blockreference
explode a blockreference
i could not explode a block reference.
i modified the sample code for oddbblockreference_dumper class in exprotocolextension.cpp in example odreadex as following:
class oddbblockreference_dumper : public oddbentity_dumper
{
public:
odrx_declare_members(oddbblockreference_dumper);
oddbblockreference_dumper() {}
void dump(oddbentity* pent, std(ostream) & os) const
{
dumpcommondata(pent, os);
oddbblockreferenceptr pblkref = pent;
//
// added code start here
os << "!!!!!!!!!oddbblockreference_dumper x=" << pblkref->position().x << std(endl);
oddbvoidptrarray entityset;
int array_size;
// explode it
odresult odres;
odres = pblkref->explode( entityset );
if ( odres != eok ) {
os << "!!!!!!!!!explode return odres != eok" << std(endl);
} else {
array_size = entityset.size();
os << "!!!!!!!!!explode size= " << array_size << std(endl);
for (int i = 0; i < array_size; i ++ ) {
oddbentityptr ee = entityset[i];
odsmartptr<oddbentity_dumper> p_ent = entityset[i];
p_ent->dump(ee, os);
os << "!!!!!!!!!explode name= " << ee->blockid() << std(endl);
}
}
// added code end here
//
oddbobjectiteratorptr piter = pblkref->attributeiterator();
for (; !piter->done(); piter->step())
{
oddbattributeptr pattr = piter->entity();
if (!pattr.isnull())
{
os << " " << pattr->isa()->name() << std(endl);
}
}
oddbspatialfilterptr pfilt = oddbindexfiltermanager::getfilter(pblkref,
oddbspatialfilter::desc(), oddb::kforread);
if(pfilt.get())
{
os << " " << "associated spatial filter: " << std(endl);
odgepoint2darray pts;
odgevector3d normal;
double elevation, frontclip, backclip;
bool enabled;
pfilt->getdefinition(pts, normal, elevation, frontclip, backclip, enabled);
os << " " << "points: " << std(endl);
for(odgepoint2darray::iterator ppoint = pts.begin(); ppoint != pts.end(); ++ppoint)
{
os << " " << "(" << ppoint->x << ", "<< ppoint->y << ")" << std(endl);
}
os << " " << "normal: (" << normal.x << ", " << normal.y << ", " << normal.z << ")" << std(endl);
os << " " << "elevation: " << elevation << std(endl);
os << " " << "frontclip: " << frontclip << std(endl);
os << " " << "backclip: " << backclip << std(endl);
os << " " << "enabled: " << enabled << std(endl);
}
}
};
i run odreadex.exe with a simple dxf file ( see attached), i always get ""!!!!!!!!!explode return odres != eok".
has any body had success with od_db_block_reference::_explode ?
hello kate,
i don't see the attachment.
hello walt,
i'm upgrading our opendwg c library to dwgdirect, as you suggested before when i asked for help on insert entity
september 2003. as i understand insert entities now are
accessed through blockreference, i try to use "explode"
to let dd do all transformation work on the inserted blocks.
and i have the problem. your help is appreciated.
i attached the file insert_blocks.dxf (size 14k) again hope it appears ( i did attached before).
kate
attached files (14.0 kb, 3 views)

hello walt,
i'm upgrading our opendwg c library to dwgdirect, as you suggested before when i asked for help on insert entity
september 2003. as i understand insert entities now are
accessed through blockreference, i try to use "explode"
to let dd do all transformation work on the inserted blocks.
and i have the problem. your help is appreciated.
i attached the file insert_blocks.dxf (size 14k) again hope it appears ( i did attached before).
kate
attached files (14.0 kb, 5 views)