使用ARX缩短一组AutoCAD线条
此//...
template inline void destroy(T*& p) { delete p; p = 0; }
//...
static AcGeVector3d delta (AcGePoint3d sp,AcGePoint3d ep)
{
acdbWcs2Ucs(asDblArray(sp),asDblArray(sp),false);
acdbWcs2Ucs(asDblArray(ep),asDblArray(ep),false);
return AcGeVector3d(ep.x - sp.x,ep.y - sp.y,ep.z - sp.z);
}
static Acad::ErrorStatus selectLines(AcDbObjectIdArray &ids)
{
Acad::ErrorStatus es = Acad::eOk;
// ssname
ads_name ssname = {0,0};
//build our filter on the stack so we don't have a ptr to free
resbuf filter = {NULL,RTDXF0};
filter.resval.rstring = _T("LINE");
// a nice happy message
const TCHAR *msg[] = {_T("\nSelect Lines: "), _T("\nRemove Lines: ")};
// get set, note the :$
if(acedSSGet(_T(":$"),msg,0,&filter,ssname)!= RTNORM)
return Acad::eNullObjectPointer;
// get the ids
es = acedGetCurrentSelectionSet(ids);
acedSSFree(ssname);
return es;
}
// - ArxExLine._exl command (do not rename)
static void ArxExLine_exl(void)
{
AcDbObjectIdArray objectIds;
if(selectLines(objectIds) != eOk)
return;
AcGePoint3d startPoint,endPoint;
//Paul this is a loop of objectIds
for(int idx = 0; idxpLn(objectIds, AcDb::kForWrite);
if(pLn.openStatus() == eOk)
{
// get the start and end points
pLn->getStartPoint(startPoint);
pLn->getEndPoint(endPoint);
// We'll extend our line by a quarter of the
// existing length in each direction
AcGeVector3d vext = delta(startPoint,endPoint) / 4;
// extend the line
pLn->extend(true, startPoint - vext);
// extend the line, but don't extend the start
pLn->extend(false, endPoint + vext);
}
}
}
// - ArxExLine._shl command (do not rename)
static void ArxExLine_shl(void)
{
AcDbObjectIdArray objectIds;
if(selectLines(objectIds) != eOk)
return;
double startParam=0;
double endParam=0;
double delta=0;
AcGeDoubleArray paramArray;
AcGeVoidPointerArray entPtrArray;
//Paul this is a loop of objectIds
for(int idx = 0; idxpCurve(objectIds, AcDb::kForWrite);
if(pCurve.openStatus() == eOk)
{
// get the start and end params
pCurve->getStartParam(startParam);
pCurve->getEndParam(endParam);
delta = (endParam-startParam) * 0.25;
// add the params to our array for getSplitCurves
paramArray.append(startParam + delta);
paramArray.append(endParam - delta);
if(pCurve->getSplitCurves(paramArray,entPtrArray)== eOk)
{
if (entPtrArray.length() == 3)
{
// See the arx docs for handOverTo
AcDbEntity *newent = (AcDbEntity*)entPtrArray;
pCurve->handOverTo(newent, true, true);
newent->close();
// delete the other new entities we don't need
AcDbEntity *tmpent = (AcDbEntity*)entPtrArray;
destroy(tmpent);
tmpent = (AcDbEntity*)entPtrArray;
destroy(tmpent);
pCurve.release((AcDbLine*&)tmpent);
destroy(tmpent);
}
else
{
// just-in-case do clean up
for(int i = 0; i : "), rStr);
int rVal;
acedInitGet(RSG_NOZERO + RSG_NONEG, _T(""));
rVal = acedGetDist(NULL, prompt, &perc);
switch (rVal)
{
case RTNORM:
acdbRToS(perc, -1, -1, rStr);
defPerc = perc;
break;
case RTNONE:
perc = defPerc;
acdbRToS(perc, -1, -1, rStr);
break;
case RTCAN:
return;
break;
}
for (int i = 0; ipLine(objId, AcDb::kForWrite);
if (pLine.openStatus() != Acad::eOk) continue;
AcGePoint3d sp, ep;
sp = pLine->startPoint();
ep = pLine->endPoint();
AcGeLineSeg3d line(sp, ep);
AcGePoint3d midPt = sp + 0.5 * (ep - sp);
line.scaleBy(perc, midPt);
pLine->setStartPoint(line.startPoint());
pLine->setEndPoint(line.endPoint());
}
acedSSFree(ss);
}
和类似的东西 不错！
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