#include <Adaptor3d_Curve.hxx>
#include <Extrema_CurveTool.hxx>
-#include <Extrema_CCache.hxx>
//=======================================================================
//function : Extrema_ExtCC
const Standard_Real V1,
const Standard_Real V2,
const Standard_Real TolC1,
- const Standard_Real TolC2) :
- myDone (Standard_False)
+ const Standard_Real TolC2)
+: myECC(C1, C2, U1, U2, V1, V2),
+ myDone (Standard_False)
{
SetCurve (1, C1, U1, U2);
SetCurve (2, C2, V1, V2);
Extrema_ExtCC::Extrema_ExtCC(const Adaptor3d_Curve& C1,
const Adaptor3d_Curve& C2,
const Standard_Real TolC1,
- const Standard_Real TolC2) :
- myDone (Standard_False)
+ const Standard_Real TolC2)
+: myECC(C1, C2),
+ myDone (Standard_False)
{
SetCurve (1, C1, C1.FirstParameter(), C1.LastParameter());
SetCurve (2, C2, C2.FirstParameter(), C2.LastParameter());
Standard_OutOfRange_Raise_if (theRank < 1 || theRank > 2, "Extrema_ExtCC::SetCurve()")
Standard_Integer anInd = theRank - 1;
myC[anInd] = (Standard_Address)&C;
-
- //clear the previous cache to rebuild it later in Perform()
- myCacheLists[anInd].Clear();
}
//=======================================================================
void Extrema_ExtCC::Perform()
{
Standard_NullObject_Raise_if (!myC[0] || !myC[1], "Extrema_ExtCC::Perform()")
+ myECC.SetParams(*((Adaptor3d_Curve*)myC[0]),
+ *((Adaptor3d_Curve*)myC[1]), myInf[0], mySup[0], myInf[1], mySup[1]);
myDone = Standard_False;
mypoints.Clear();
mySqDist.Clear();
if (Precision::IsInfinite(U12) || Precision::IsInfinite(U22)) mydist22 = RealLast();
else mydist22 = P1l.SquareDistance(P2l);
- myECC.SetTolerance (Tol);
-
//Depending on the types of curves, the algorithm is chosen:
//- _ExtElC, when one of the curves is a line and the other is elementary,
// or there are two circles;
Results(CCXtrem, U11, U12, U21, U22);
}
else {
- Standard_Integer i;
- Standard_Integer aNbS = 32; //default number of sample points per interval (why 32?)
- for (i = 0; i < 2; i++) {
- TColStd_ListOfTransient& aCacheList = myCacheLists[i];
- if (aCacheList.IsEmpty()) {
- //no caches, build them
- Adaptor3d_Curve& aC = *(Adaptor3d_Curve*)myC[i];
- //single interval from myInf[i] to mySup[i]
- Handle(Extrema_CCache) aCache = new Extrema_CCache(aC, myInf[i], mySup[i], aNbS, Standard_True);
- aCacheList.Append (aCache);
- }
- }
- Handle(Extrema_CCache) aCache1 = Handle(Extrema_CCache)::DownCast (myCacheLists[0].First());
- myECC.SetCurveCache (1, aCache1);
- Handle(Extrema_CCache) aCache2 = Handle(Extrema_CCache)::DownCast (myCacheLists[1].First());
- myECC.SetCurveCache (2, aCache2);
myECC.Perform();
- Results (myECC, U11, U12, U21, U22);
+ Results(myECC, U11, U12, U21, U22);
}
} else {
- //common case - use _GenExtCC
- //1. check and prepare caches
-
- Standard_Integer i;
- Standard_Integer aNbS[2] = {32, 32}, aNbInter[2] = {1, 1};
- Standard_Real Coeff[2] = {1., 1.};
- Standard_Real rf = 0., rl = 0., LL[2] = {-1., -1.};
- Standard_Boolean KnotSampling[2] = {Standard_False, Standard_False};
- for (i = 0; i < 2; i++) {
- TColStd_ListOfTransient& aCacheList = myCacheLists[i];
- if (aCacheList.IsEmpty()) {
- //no caches, build them
- Adaptor3d_Curve& aC = *(Adaptor3d_Curve*)myC[i];
-
- Standard_Real du1 = 0., t = 0.;
- gp_Pnt P1, P2;
- GeomAbs_CurveType aType = aC.GetType();
- switch (aType) {
- case GeomAbs_BezierCurve:
- aNbS[i] = aC.NbPoles() * 2;
- break;
- case GeomAbs_BSplineCurve:
- if (aC.Degree() <= 3 &&
- aC.NbKnots() > 2)
- KnotSampling[i] = Standard_True;
-
- aNbS[i] = aC.NbPoles() * 2;
- rf = (Extrema_CurveTool::BSpline(*((Adaptor3d_Curve*)myC[i])))->FirstParameter();
- rl = (Extrema_CurveTool::BSpline(*((Adaptor3d_Curve*)myC[i])))->LastParameter();
- aNbS[i] = (Standard_Integer) ( aNbS[i] * ((mySup[i] - myInf[i]) / (rl - rf)) + 1 );
- case GeomAbs_OtherCurve:
- case GeomAbs_Line:
- //adjust number of sample points for Lines, B-Splines and Other curves
- aNbInter[i] = aC.NbIntervals (GeomAbs_C2);
- aNbS[i] = Max(aNbS[i] / aNbInter[i], 3);
- LL[i] = 0.;
- du1 = (mySup[i] - myInf[i]) / ((aNbS[i]-1)*aNbInter[i]);
- P1 = Extrema_CurveTool::Value(*((Adaptor3d_Curve*)myC[i]), myInf[i]);
- for(t = myInf[i] + du1; t <= mySup[i]; t += du1) {
- P2 = Extrema_CurveTool::Value(*((Adaptor3d_Curve*)myC[i]), t);
- LL[i] += P1.Distance(P2);
- P1 = P2;
- }
- LL[i] /= ((aNbS[i]-1)*aNbInter[i]);
- break;
- default:
- break;
- }
- }
- }
-
- if(LL[0] > 0. && LL[1] > 0.) {
- if(LL[0] > 4.*LL[1]) {
- Coeff[0] = LL[0]/LL[1]/2.;
- if (aNbS[0] * Coeff[0] <= 10000.0)
- aNbS[0] = (Standard_Integer) ( aNbS[0] * Coeff[0] );
- }
- else if(LL[1] > 4.*LL[0]) {
- Coeff[1] = LL[1]/LL[0]/2.;
- if (aNbS[1] * Coeff[1] <= 10000.0)
- aNbS[1] = (Standard_Integer) (aNbS[1] * Coeff[1] );
- }
- }
- //modified by NIZNHY-PKV Tue Apr 17 10:01:32 2012f
- Standard_Integer aNbSTresh;
- //
- aNbSTresh=10000;
- //
- for (i = 0; i < 2; ++i) {
- if (aNbS[i]>aNbSTresh) {
- aNbS[i]=aNbSTresh;
- }
- }
- //modified by NIZNHY-PKV Tue Apr 17 10:01:34 2012t
- for (i = 0; i < 2; i++) {
- TColStd_ListOfTransient& aCacheList = myCacheLists[i];
- if (aCacheList.IsEmpty()) {
- //no caches, build them
- Adaptor3d_Curve& aC = *(Adaptor3d_Curve*)myC[i];
-
- if (aC.GetType() >= GeomAbs_BSplineCurve)
- {
- //can be multiple intervals, one cache per one C2 interval
- TColStd_Array1OfReal anArr (1, aNbInter[i] + 1);
- aC.Intervals (anArr, GeomAbs_C2);
-
- if (KnotSampling[i])
- {
- Standard_Integer NbIntervCN = aC.NbIntervals(GeomAbs_CN);
- TColStd_Array1OfReal IntervalsCN(1, NbIntervCN + 1);
- aC.Intervals(IntervalsCN, GeomAbs_CN);
-
- Standard_Integer j = 1, start_j = 1, k;
- Standard_Real NextKnot;
- for (k = 1; k <= aNbInter[i]; k++)
- {
- do
- {
- NextKnot = IntervalsCN(j+1);
- j++;
- }
- while (NextKnot != anArr(k+1));
-
- Handle(Extrema_CCache) aCache =
- new Extrema_CCache(aC, anArr(k), anArr(k+1),
- IntervalsCN, start_j, j, Coeff[i]);
- aCacheList.Append (aCache);
-
- start_j = j;
- }
- }
- else
- {
- for (Standard_Integer k = 1; k <= aNbInter[i]; k++) {
- Handle(Extrema_CCache) aCache =
- new Extrema_CCache(aC, anArr(k), anArr(k+1), aNbS[i], Standard_True);
- aCacheList.Append (aCache);
- }
- }
- }
- else
- {
- //single interval from myInf[i] to mySup[i]
- Handle(Extrema_CCache) aCache = new Extrema_CCache (aC,
- myInf[i], mySup[i], aNbS[i], Standard_True);
- aCacheList.Append (aCache);
- }
- }
- }
-
- //2. process each cache from one list with each cache from the other
- TColStd_ListIteratorOfListOfTransient anIt1 (myCacheLists[0]);
- for (; anIt1.More(); anIt1.Next()) {
- Handle(Extrema_CCache) aCache1 = Handle(Extrema_CCache)::DownCast (anIt1.Value());
- myECC.SetCurveCache (1, aCache1);
- TColStd_ListIteratorOfListOfTransient anIt2 (myCacheLists[1]);
- for (; anIt2.More(); anIt2.Next()) {
- Handle(Extrema_CCache) aCache2 = Handle(Extrema_CCache)::DownCast (anIt2.Value());
- myECC.SetCurveCache (2, aCache2);
- myECC.Perform();
- Results(myECC, U11, U12, U21, U22);
- }
- }
+ myECC.Perform();
+ Results(myECC, U11, U12, U21, U22);
}
}
projects / occt.git / blobdiff