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0029979: Data Exchange - Crash by reading STEP file

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Added work-around against specific problem of ORIENTED_EDGE referring to another ORIENTED_EDGE instead of EDGE_CURVE.
Added handling of edges with null EDGE_CURVE, to allow passing the translation further instead of exception.

Off-topic: text of warning message is corrected in genproj

Added test bugs step bug29979
This commit is contained in:
abv 2019-07-09 14:47:21 +03:00 committed by bugmaster
parent ba165db3d3
commit fa68c1e116
3 changed files with 47 additions and 17 deletions
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2
adm/genproj.tcl
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@ -936,7 +936,7 @@ proc osutils:collectinc {theModules theIncPath} {
set anIncFiles [glob -tails -nocomplain -dir ${anIncPath} "*"]
foreach anIncFile ${anIncFiles} {
if { [lsearch -exact ${allHeaderFiles} ${anIncFile}] == -1 } {
puts "Warning: file ${anIncPath}/${anIncFile} is not presented in the sources and will be removed from ${theIncPath}!"
puts "Warning: file ${anIncPath}/${anIncFile} is not present in the sources and will be removed from ${theIncPath}"
file delete -force "${theIncPath}/${anIncFile}"
}
}

51
src/StepToTopoDS/StepToTopoDS_TranslateEdgeLoop.cxx
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@ -238,7 +238,6 @@ void StepToTopoDS_TranslateEdgeLoop::Init(const Handle(StepShape_FaceBound)& Fac
Standard_Boolean isSeam, isLikeSeam;
Handle(StepShape_Edge) StepEdge, StepEdge1;
Handle(StepShape_OrientedEdge) OrEdge1, OrEdge2;
Handle(StepGeom_Curve) StepCurve, StepCurve1, StepCurve2;
Handle(StepRepr_DefinitionalRepresentation) DRI, Dri1, Dri2;
@ -284,10 +283,18 @@ void StepToTopoDS_TranslateEdgeLoop::Init(const Handle(StepShape_FaceBound)& Fac
for (j=1; j<=NbEdge; j++) {
OrEdge1 = EL->EdgeListValue(j);
StepEdge = OrEdge1->EdgeElement();
// if(j>1 && StepEdge == StepEdge1) theSame++; //gka 15.12.98
StepEdge1 = StepEdge; //
Handle(StepShape_EdgeCurve) EC = Handle(StepShape_EdgeCurve)::DownCast(StepEdge);
// see bug #29979: oriented edge contains another oriented edge
if (OrEdge1->EdgeElement()->IsKind (STANDARD_TYPE(StepShape_OrientedEdge)))
OrEdge1 = Handle(StepShape_OrientedEdge)::DownCast (OrEdge1->EdgeElement());
Handle(StepShape_EdgeCurve) EC = Handle(StepShape_EdgeCurve)::DownCast(OrEdge1->EdgeElement());
if (EC.IsNull())
{
TP->AddWarning (OrEdge1, "Edge does not contain EDGE_CURVE, skipped");
continue;
}
Handle(StepGeom_Curve) C = EC->EdgeGeometry();
if (!C.IsNull()) {
if (C->IsKind(STANDARD_TYPE(StepGeom_SurfaceCurve))) {
@ -366,6 +373,10 @@ void StepToTopoDS_TranslateEdgeLoop::Init(const Handle(StepShape_FaceBound)& Fac
Handle(StepShape_EdgeCurve)::DownCast (OrEdge1->EdgeElement());
Handle(StepShape_EdgeCurve) EC2 =
Handle(StepShape_EdgeCurve)::DownCast (OrEdge2->EdgeElement());
if (EC1.IsNull() || EC2.IsNull()) // see #29979
{
continue;
}
Handle(StepShape_Vertex) Vs1, Vs2, Vs11, Vs22;
Vs1 = (OrEdge1->Orientation() ? EC1->EdgeEnd() : EC1->EdgeStart());
@ -413,8 +424,16 @@ void StepToTopoDS_TranslateEdgeLoop::Init(const Handle(StepShape_FaceBound)& Fac
#endif
OrEdge1 = EL->EdgeListValue(j);
StepEdge = OrEdge1->EdgeElement();
Handle(StepShape_EdgeCurve) EC = Handle(StepShape_EdgeCurve)::DownCast(StepEdge);
// see bug #29979: oriented edge contains another oriented edge
if (OrEdge1->EdgeElement()->IsKind (STANDARD_TYPE(StepShape_OrientedEdge)))
OrEdge1 = Handle(StepShape_OrientedEdge)::DownCast (OrEdge1->EdgeElement());
Handle(StepShape_EdgeCurve) EC = Handle(StepShape_EdgeCurve)::DownCast(OrEdge1->EdgeElement());
if (EC.IsNull())
{
continue;
}
// ----------------
// Map the StepEdge
@ -491,9 +510,9 @@ void StepToTopoDS_TranslateEdgeLoop::Init(const Handle(StepShape_FaceBound)& Fac
// --- or is like a seam curve ---
// --- (see CATIA cylinder) ---
// -------------------------------------------
isLikeSeam = StepToTopoDS_GeometricTool::IsLikeSeam(SurfCurve, StepSurf, StepEdge, EL);
isLikeSeam = StepToTopoDS_GeometricTool::IsLikeSeam(SurfCurve, StepSurf, EC, EL);
isSeam = StepToTopoDS_GeometricTool::IsSeamCurve(SurfCurve, StepSurf, StepEdge, EL);
isSeam = StepToTopoDS_GeometricTool::IsSeamCurve(SurfCurve, StepSurf, EC, EL);
if (isSeam || isLikeSeam) {
// isLikeSeam = Two faces on the same Surface
@ -570,7 +589,7 @@ void StepToTopoDS_TranslateEdgeLoop::Init(const Handle(StepShape_FaceBound)& Fac
Standard_Integer forwardPC =
ShapeAnalysis_Curve().SelectForwardSeam(C2d1, C2d2);
if (forwardPC == 0) {
TP->AddFail(StepEdge, " Seam curve not mapped");
TP->AddFail(EC, " Seam curve not mapped");
done = Standard_False;
myError = StepToTopoDS_TranslateEdgeLoopOther;
continue;
@ -602,7 +621,7 @@ void StepToTopoDS_TranslateEdgeLoop::Init(const Handle(StepShape_FaceBound)& Fac
}
}
else {
TP->AddFail(StepEdge, " Seam curve not mapped");
TP->AddFail(EC, " Seam curve not mapped");
done = Standard_False;
myError = StepToTopoDS_TranslateEdgeLoopOther;
continue;
@ -619,7 +638,7 @@ void StepToTopoDS_TranslateEdgeLoop::Init(const Handle(StepShape_FaceBound)& Fac
B.UpdateEdge(E, C2d, Face, 0.);
}
else {
TP->AddFail(StepEdge, " Edge: Trimming of 2D curve failed");
TP->AddFail(EC, " Edge: Trimming of 2D curve failed");
done = Standard_False;
myError = StepToTopoDS_TranslateEdgeLoopOther;
continue;
@ -628,13 +647,13 @@ void StepToTopoDS_TranslateEdgeLoop::Init(const Handle(StepShape_FaceBound)& Fac
}
if (E.IsNull()) {
TP->AddFail(StepEdge, " an Edge not mapped");
TP->AddFail(EC, " an Edge not mapped");
done = Standard_False;
myError = StepToTopoDS_TranslateEdgeLoopOther;
}
}
else { // The Edge is Not mapped => switch to next wire ?
TP->AddFail(StepEdge, " an Edge not mapped");
TP->AddFail(EC," an Edge not mapped");
done = Standard_False;
myError = StepToTopoDS_TranslateEdgeLoopOther;
}
@ -642,8 +661,8 @@ void StepToTopoDS_TranslateEdgeLoop::Init(const Handle(StepShape_FaceBound)& Fac
if (done) B.Add (W, E); // on le fait ici. Sauf si erreur rencontree ... !
else {
Handle(StepShape_Vertex) Vs1, Vs2;
Vs1 = StepEdge->EdgeStart();
Vs2 = StepEdge->EdgeEnd();
Vs1 = EC->EdgeStart();
Vs2 = EC->EdgeEnd();
if (!Vs1.IsNull() && !Vs2.IsNull() && Vs1==Vs2) {
done = Standard_True;
TP->AddFail(EL, " Edge with equal vertices failed, scipped");

11
tests/bugs/step/bug29979 Normal file
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@ -0,0 +1,11 @@
puts "==============================================================="
puts "0029979: Data Exchange - Crash by reading STEP file"
puts "==============================================================="
puts ""
puts "Read only the solid that contains broken edges"
stepread [locate_data_file bug29979_firetherm_12.step] a #10154
tpstat c
puts "\nCheck that result is not empty"
checknbshapes a_1 -solid 1 -face 1565