void
ArxDbgDbAdeskLogo::getReferenceAttachmentPoint(AcDbEntity* ent, AcGePoint3d& toPt)
{
AcDbCircle* circ;
AcDbArc* arc;
AcDbLine* line;
AcDbPoint* point;
AcDbBlockReference* blkRef;
if ((circ = AcDbCircle::cast(ent)) != NULL)
toPt = circ->center();
else if ((arc = AcDbArc::cast(ent)) != NULL)
toPt = arc->center();
else if ((line = AcDbLine::cast(ent)) != NULL)
toPt = line->startPoint();
else if ((point = AcDbPoint::cast(ent)) != NULL)
toPt = point->position();
else if ((blkRef = AcDbBlockReference::cast(ent)) != NULL)
toPt = blkRef->position();
else {
// can't get anything better so just rely on the ECS. If the
// raw AutoCAD entities would do this, we wouldn't need the above
// switch statement.
AcGeMatrix3d mat;
ent->getEcs(mat);
AcGeVector3d v1, v2, v3;
mat.getCoordSystem(toPt, v1, v2, v3);
}
}
