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0025427: Algorithm of building plane from wire hangs

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Test-case for issue #25427
This commit is contained in:
ifv 2014-11-05 16:44:37 +03:00 committed by bugmaster
parent 3908084224
commit 43dbdb15db
2 changed files with 173 additions and 135 deletions
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33
src/BRepLib/BRepLib_FindSurface.cxx
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@ -287,7 +287,11 @@ void BRepLib_FindSurface::Init(const TopoDS_Shape& S,
// Put all poles for bezier // Put all poles for bezier
Handle(Geom_BezierCurve) GC = c.Bezier(); Handle(Geom_BezierCurve) GC = c.Bezier();
Standard_Integer iNbPol = GC->NbPoles(); Standard_Integer iNbPol = GC->NbPoles();
if ( iNbPol < 2) Standard_Real tf = GC->FirstParameter();
Standard_Real tl = GC->LastParameter();
Standard_Real r = (dfUl - dfUf) / (tl - tf);
r *= iNbPol;
if ( iNbPol < 2 || r < 1.)
// Degenerate // Degenerate
continue; continue;
else else
@ -318,20 +322,36 @@ void BRepLib_FindSurface::Init(const TopoDS_Shape& S,
// Put all poles for bspline // Put all poles for bspline
Handle(Geom_BSplineCurve) GC = c.BSpline(); Handle(Geom_BSplineCurve) GC = c.BSpline();
Standard_Integer iNbPol = GC->NbPoles(); Standard_Integer iNbPol = GC->NbPoles();
if ( iNbPol < 2) Standard_Real tf = GC->FirstParameter();
Standard_Real tl = GC->LastParameter();
Standard_Real r = (dfUl - dfUf) / (tl - tf);
r *= iNbPol;
if ( iNbPol < 2 || r < 1.)
// Degenerate // Degenerate
continue; continue;
else else
{ {
const Standard_Integer aNbPolMax = 200;
Standard_Integer incr = 1;
if(iNbPol > aNbPolMax)
{
Standard_Integer nb = iNbPol;
while(nb > aNbPolMax)
{
incr++;
nb = (iNbPol-1) / incr;
}
}
Handle(TColgp_HArray1OfPnt) aPoles = new (TColgp_HArray1OfPnt) (1, iNbPol); Handle(TColgp_HArray1OfPnt) aPoles = new (TColgp_HArray1OfPnt) (1, iNbPol);
GC->Poles(aPoles->ChangeArray1()); GC->Poles(aPoles->ChangeArray1());
gp_Pnt aPolePrev = aPoles->Value(1), aPoleNext; gp_Pnt aPolePrev = aPoles->Value(1), aPoleNext;
Standard_Real dfDistPrev = 0., dfDistNext; Standard_Real dfDistPrev = 0., dfDistNext;
for (Standard_Integer iPol=1; iPol<=iNbPol; iPol++) Standard_Integer iPol;
for (iPol = 1; iPol <= iNbPol; iPol += incr)
{ {
if (iPol<iNbPol) if (iPol <= iNbPol - incr)
{ {
aPoleNext = aPoles->Value(iPol+1); aPoleNext = aPoles->Value(iPol+incr);
dfDistNext = aPolePrev.Distance(aPoleNext); dfDistNext = aPolePrev.Distance(aPoleNext);
} }
else else
@ -450,7 +470,8 @@ void BRepLib_FindSurface::Init(const TopoDS_Shape& S,
if (!isSolved || myTolerance < dfDist) { if (!isSolved || myTolerance < dfDist) {
gp_Pnt aFirstPnt=aPoints(1); gp_Pnt aFirstPnt=aPoints(1);
for (iPoint=2; iPoint<=aPoints.Length(); iPoint++) { for (iPoint=2; iPoint<=aPoints.Length(); iPoint++) {
gp_Vec aDir(aFirstPnt,aPoints(iPoint)); const gp_Pnt& aNextPnt = aPoints(iPoint);
gp_Vec aDir(aFirstPnt, aNextPnt);
Standard_Real dfSide=aDir.Magnitude(); Standard_Real dfSide=aDir.Magnitude();
if (dfSide<myTolerance) { if (dfSide<myTolerance) {
continue; // degeneration continue; // degeneration

17
tests/bugs/modalg_5/bug25427 Normal file
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@ -0,0 +1,17 @@
puts "========"
puts "OCC25427"
puts "========"
puts ""
###############################################
# Algorithm of building plane from wire hangs
###############################################
smallview
restore [locate_data_file bug25427_w.brep] w
mkplane p w 1
fit
set only_screen_axo 1