I have a function working well in 2-D View, but in 3-D view , the "zoom" funtion dose not give me the corrent result.
the code below is the fuction, can anyone tell me what's wrong in this function, or give me some example?
void Zoom(const ads_point pt1,const ads_point pt2)
{
// ads_command(RTSTR,_T("_zoom"),RTSTR,_T("w"),RT3DPOINT,pt1,RT3DPOINT,pt2,RTNONE);
// return;
//CS cs;
//acedTrans(pt1,&cs.ucs,&cs.wcs,0,pt1);
//acedTrans(pt2,&cs.ucs,&cs.wcs,0,pt2);
//HINSTANCE hAcad = acedGetAcadResourceInstance();
//HINSTANCE hCur = AfxGetResourceHandle();
//AfxSetResourceHandle(hAcad);//在对话框的函数中，使用Zoom时，由于资料问题，下面的函数会崩溃。 设置CAD资源，这样可以解决方案问题。
AcDbViewTableRecord view;
struct resbuf rb;
struct resbuf wcs, dcs, ccs; // acedTrans coord system flags
ads_point vpDir;
ads_point ptmax;
AcGeVector3d viewDir;
AcGePoint2d cenPt;
ads_real lenslength, viewtwist, frontz, backz;
ads_point target;
int tilemode, cvport; // Get window to zoom to:
wcs.restype = RTSHORT; // WORLD coord system flag
wcs.resval.rint = 0;
ccs.restype = RTSHORT; // CURRENT coord system flag
ccs.resval.rint = 1;
dcs.restype = RTSHORT; // DEVICE coord system flag
dcs.resval.rint = 2; // Get the 'VPOINT' direction vector
acedGetVar(_T("VIEWDIR"), &rb);
acedTrans(rb.resval.rpoint, &ccs, &wcs, 0, vpDir);
viewDir.set(vpDir[X], vpDir[Y], vpDir[Z]);
ads_point pt;
pt[X] = (pt1[X] + pt2[X])/2;
pt[Y] = (pt1[Y] + pt2[Y])/2;
pt[Z] = (pt1[Z] + pt2[Z])/2;
acedTrans(pt, &ccs, &dcs, 0, ptmax);
// set center point of view
cenPt[X] = ptmax[X];
cenPt[Y] = ptmax[Y];
view.setCenterPoint(cenPt);
{
ads_point pt11,pt22;
acedTrans(pt1, &ccs, &dcs, 0, pt11);
acedTrans(pt2, &ccs, &dcs, 0, pt22);
view.setHeight(fabs(pt11[Y]-pt22[Y]));
view.setWidth(fabs(pt11[X]-pt22[X]));
}
view.setViewDirection(viewDir);
// get and set other properties
acedGetVar(_T("LENSLENGTH"), &rb);
lenslength = rb.resval.rreal;
view.setLensLength(lenslength);
acedGetVar(_T("VIEWTWIST"), &rb);
viewtwist = rb.resval.rreal;
view.setViewTwist(viewtwist);//当前视图的转角,只能是平面的转,不能三维的
acedGetVar(_T("FRONTZ"), &rb);
frontz = rb.resval.rreal;
acedGetVar(_T("BACKZ"), &rb);
backz = rb.resval.rreal;
view.setPerspectiveEnabled(false);
view.setFrontClipEnabled(false);
view.setBackClipEnabled(false);
view.setFrontClipAtEye(false);
acedGetVar(_T("TILEMODE"), &rb);
tilemode = rb.resval.rint;
acedGetVar(_T("CVPORT"), &rb);
cvport = rb.resval.rint;
// Paperspace flag
bool paperspace = ((tilemode == 0) && (cvport == 1)) ? Adesk::kTrue
:Adesk::kFalse;
view.setIsPaperspaceView(paperspace);
if (Adesk::kFalse == paperspace) {
view.setFrontClipDistance(frontz);
view.setBackClipDistance(backz);
}
else {
view.setFrontClipDistance(0.0);
view.setBackClipDistance(0.0);
}
acedGetVar(_T("TARGET"), &rb);
acedTrans(rb.resval.rpoint, &ccs, &wcs, 0, target);
view.setTarget(AcGePoint3d(target[X], target[Y], target[Z]));
// update view
//AcDbObjectId id=acedGetCurViewportObjectId();//这个函数只能在图纸空间中使用。
//AcDbObjectId id = acedActiveViewportId();
//AcDbObjectPointer<AcDbViewport> pVP(id,AcDb::kForRead);
acedSetCurrentView(&view,NULL);
//AfxSetResourceHandle(hCur);
}
