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0026647: BRepTools::UVBounds() computes zero range by V

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Calculation of bounding box on conic 2d curves corrected to work properly if specified parametric range is in negative values.

Test case added
This commit is contained in:
abv
2015-09-06 16:46:08 +03:00
parent 4c15f1799b
commit 61b0059a45
2 changed files with 27 additions and 35 deletions
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45
src/BndLib/BndLib_Add2dCurve.cxx
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@@ -584,7 +584,7 @@ void BndLib_Box2dCurve::Compute(const Handle(Geom2d_Conic)& aConic2D,
Bnd_Box2d& aBox2D)
{
Standard_Integer i, aNbT;
Standard_Real pT[10], aT, aTwoPI, aT1x, aT2x, dT, aT1z, aT2z, aEps;
Standard_Real pT[10], aT, aTwoPI, dT, aEps;
gp_Pnt2d aP2D;
//
aNbT=Compute(aConic2D, aType, pT);
@@ -605,53 +605,28 @@ void BndLib_Box2dCurve::Compute(const Handle(Geom2d_Conic)& aConic2D,
aTwoPI=2.*M_PI;
dT=aT2-aT1;
//
aT1z=aT1;
aT2z=aT2;
if (aT1z>=aTwoPI) {
aT1z=AdjustToPeriod(aT1z, aTwoPI);
aT2z=aT1z+dT;
}
Standard_Real aT1z = AdjustToPeriod (aT1, aTwoPI);
if (fabs(aT1z)<aEps) {
aT1z=0.;
}
//
Standard_Real aT2z = aT1z + dT;
if (fabs(aT2z-aTwoPI)<aEps) {
aT2z=aTwoPI;
}
//
//
for (i=0; i<aNbT; ++i) {
aT=pT[i];
if (aT>=aT1z && aT<=aT2z) {
aT = pT[i];
// adjust aT to range [aT1z, aT1z + 2*PI]; note that pT[i] and aT1z
// are adjusted to range [0, 2*PI], but aT2z can be greater than 2*PI
aT = (aT < aT1z ? aT + aTwoPI : aT);
if (aT <= aT2z) {
D0(aT, aP2D);
aBox2D.Add(aP2D);
}
}
//
aT1x=AdjustToPeriod(aT1, aTwoPI);
aT2x=aT1x+dT;
//
if (aT1x < aTwoPI && aT2x > aTwoPI) {
aT1z=aT1x;
aT2z=aTwoPI;
for (i=0; i<aNbT; ++i) {
aT=pT[i];
if (aT>=aT1z && aT<=aT2z) {
D0(aT, aP2D);
aBox2D.Add(aP2D);
}
}
//
aT1z=0.;
aT2z=aT2x-aTwoPI;
for (i=0; i<aNbT; ++i) {
aT=pT[i];
if (aT>=aT1z && aT<=aT2z) {
D0(aT, aP2D);
aBox2D.Add(aP2D);
}
}
}
}
//=======================================================================
//function : Compute
//purpose :