[ACAD 2013] Zoom on object

[gatti.massimo]

Hi,

I need to zoom on an acdbBlockReference object.

I get the lowerleft and the upperright point for the zoom..

But how can I zoom on that area with the zoom command?

Thanks to everybody for your help!

This is my code

//zoom on object
			AcDbHandle			pObjHandle;
			AcDbObjectId		ObjId;
			AcDbObject		*	pObj;
			Acad::ErrorStatus	Err;

			pObjHandle = AcDbHandle(ActualNode->_ObjectHandleLow,ActualNode->_ObjectHandleHigh);
			acdbHostApplicationServices()->workingDatabase()->getAcDbObjectId(ObjId , false, pObjHandle);

			//recupero i dati del pnodedetails già presente
			if (acdbOpenAcDbObject(pObj, ObjId, AcDb::kForRead) != Acad::eOk)
			{
				acutPrintf (_T("\nzoom - acdbOpenAcDbEntity error!"));
				//return;
			}


			AcDbBlockReference * pBlockRef = AcDbBlockReference::cast(pObj);

			AcDbExtents block_extents;

			pBlockRef->getGeomExtents(block_extents);

			AcGePoint3d plLowerLeft, ptUpperRight; //-> it's your object extends coords

			plLowerLeft = block_extents.minPoint();
			ptUpperRight = block_extents.maxPoint();

[oliver253m · Accepted solution]

I believe this should help you: http://forums.autodesk.com/t5/Autodesk-ObjectARX/simulate-AutoCAD-command-quot-zoom-quot/td-p/312226

[owenwengerd]

Object extents are in World coordinates, but you need them in display coordinates for zooming. Just convert your handle to an ads_name (using acdbHandEnt), then use acedCommand to call the _ZOOM coomand's _Object option and provide the entity to zoom to.

[gatti.massimo]

Perfect!

It works!

Thank you for your help!

[minhasp]

   m_ext is ACdbExtern of object;

=>>>>>>

    CString minPtstr;
    CString maxPtStr;

    minPtstr.Format(L"%.3f,%.3f",m_ext.minPoint().x,m_ext.minPoint().y);
    maxPtStr.Format(L"%.3f,%.3f",m_ext.maxPoint().x,m_ext.maxPoint().y);


    acedCommand(RTSTR,L"_ZOOM",RTSTR,L"_W",RTSTR,minPtstr,RTSTR,maxPtStr,RTNONE);