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0032041: Modeling Data - Access violation ExchangeUV in Geom_BezierSurface

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Added missing NULL-checks to Geom_BezierSurface::ExchangeUV() and Geom_BSplineSurface::ExchangeUV().
This commit is contained in:
kgv 2021-01-07 23:10:27 +03:00 committed by bugmaster
parent cfb54c0c0a
commit 83746de803
3 changed files with 60 additions and 57 deletions
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63
src/Geom/Geom_BSplineSurface.cxx
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@ -300,48 +300,37 @@ void Geom_BSplineSurface::ExchangeUV ()
Standard_Integer LR = poles->LowerRow();
Standard_Integer UR = poles->UpperRow();
Handle(TColgp_HArray2OfPnt) npoles =
new TColgp_HArray2OfPnt (LC, UC, LR, UR);
Handle(TColStd_HArray2OfReal) nweights =
new TColStd_HArray2OfReal (LC, UC, LR, UR);
const TColgp_Array2OfPnt & spoles = poles->Array2();
const TColStd_Array2OfReal & sweights = weights->Array2();
TColgp_Array2OfPnt& snpoles = npoles->ChangeArray2();
TColStd_Array2OfReal& snweights = nweights->ChangeArray2();
Standard_Integer i, j;
for (i = LC; i <= UC; i++) {
for (j = LR; j <= UR; j++) {
snpoles (i,j) = spoles (j,i);
snweights (i,j) = sweights (j,i);
}
Handle(TColgp_HArray2OfPnt) npoles = new TColgp_HArray2OfPnt (LC, UC, LR, UR);
Handle(TColStd_HArray2OfReal) nweights;
if (!weights.IsNull())
{
nweights = new TColStd_HArray2OfReal (LC, UC, LR, UR);
}
const TColgp_Array2OfPnt& spoles = poles->Array2();
const TColStd_Array2OfReal* sweights = !weights.IsNull() ? &weights->Array2() : NULL;
TColgp_Array2OfPnt& snpoles = npoles->ChangeArray2();
TColStd_Array2OfReal* snweights = !nweights.IsNull() ? &nweights->ChangeArray2() : NULL;
for (Standard_Integer i = LC; i <= UC; i++)
{
for (Standard_Integer j = LR; j <= UR; j++)
{
snpoles (i, j) = spoles (j, i);
if (snweights != NULL)
{
snweights->ChangeValue (i, j) = sweights->Value (j, i);
}
}
}
poles = npoles;
weights = nweights;
Standard_Boolean temp = urational;
urational = vrational;
vrational = temp;
temp = uperiodic;
uperiodic = vperiodic;
vperiodic = temp;
Standard_Integer tempdeg = udeg;
udeg = vdeg;
vdeg = tempdeg;
Handle(TColStd_HArray1OfReal) tempknots = uknots;
uknots = vknots;
vknots = tempknots;
Handle(TColStd_HArray1OfInteger) tempmults = umults;
umults = vmults;
vmults = tempmults;
std::swap (urational, vrational);
std::swap (uperiodic, vperiodic);
std::swap (udeg, vdeg);
std::swap (uknots, vknots);
std::swap (umults, vmults);
UpdateUKnots();
UpdateVKnots();

42
src/Geom/Geom_BezierSurface.cxx
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@ -505,31 +505,33 @@ void Geom_BezierSurface::ExchangeUV ()
Standard_Integer LR = poles->LowerRow();
Standard_Integer UR = poles->UpperRow();
Handle(TColgp_HArray2OfPnt) npoles =
new TColgp_HArray2OfPnt (LC, UC, LR, UR);
Handle(TColStd_HArray2OfReal) nweights =
new TColStd_HArray2OfReal (LC, UC, LR, UR);
const TColgp_Array2OfPnt & spoles = poles->Array2();
const TColStd_Array2OfReal & sweights = weights->Array2();
TColgp_Array2OfPnt& snpoles = npoles->ChangeArray2();
TColStd_Array2OfReal& snweights = nweights->ChangeArray2();
Standard_Integer i, j;
for (i = LC; i <= UC; i++) {
for (j = LR; j <= UR; j++) {
snpoles (i,j) = spoles (j,i);
snweights (i,j) = sweights (j,i);
}
Handle(TColgp_HArray2OfPnt) npoles = new TColgp_HArray2OfPnt (LC, UC, LR, UR);
Handle(TColStd_HArray2OfReal) nweights;
if (!weights.IsNull())
{
nweights = new TColStd_HArray2OfReal (LC, UC, LR, UR);
}
const TColgp_Array2OfPnt& spoles = poles->Array2();
const TColStd_Array2OfReal* sweights = !weights.IsNull() ? &weights->Array2() : NULL;
TColgp_Array2OfPnt& snpoles = npoles->ChangeArray2();
TColStd_Array2OfReal* snweights = !nweights.IsNull() ? &nweights->ChangeArray2() : NULL;
for (Standard_Integer i = LC; i <= UC; i++)
{
for (Standard_Integer j = LR; j <= UR; j++)
{
snpoles (i, j) = spoles (j, i);
if (snweights != NULL)
{
snweights->ChangeValue (i, j) = sweights->Value (j, i);
}
}
}
poles = npoles;
weights = nweights;
Standard_Boolean temp = urational;
urational = vrational;
vrational = temp;
std::swap (urational, vrational);
}
//=======================================================================

12
tests/bugs/moddata_3/bug32041 Normal file
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@ -0,0 +1,12 @@
puts "========="
puts "0032041: Modeling Data - Access v i o l a t i o n ExchangeUV in Geom_BezierSurface"
puts "========="
puts ""
pload MODELING
beziersurf bs 4 4 0 0 0 4 0 0 8 0 0 12 0 0 0 4 0 4 4 1 8 4 0 12 4 0 0 8 0 4 8 0 8 8 -1 12 8 0 0 12 0 4 12 0 8 12 0 12 12 0
smallview
fit
xwd ${imagedir}/${casename}_1.png
exchuv bs
xwd ${imagedir}/${casename}_2.png