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0025898: Wrong result obtained by intersection algorithm.

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The reason of the exception has been eliminated.

Test case for issue CR25898
This commit is contained in:
nbv 2015-03-19 15:45:54 +03:00 committed by bugmaster
parent 7f0b39bec9
commit c4af16fbf3
2 changed files with 70 additions and 2 deletions
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47
src/IntWalk/IntWalk_PWalking.cxx
View File

@ -1374,6 +1374,9 @@ void IntWalk_PWalking::Perform(const TColStd_Array1OfReal& ParDep,
if (previoustg)
{
//There are three consecutive points:
//previousPointSave -> ParamPnt -> curPnt.
Standard_Real prevU1, prevV1, prevU2, prevV2;
previousPointSave.Parameters(prevU1, prevV1, prevU2, prevV2);
gp_Pnt2d prevPntOnS1(prevU1, prevV1), prevPntOnS2(prevU2, prevV2);
@ -1383,9 +1386,49 @@ void IntWalk_PWalking::Perform(const TColStd_Array1OfReal& ParDep,
gp_Vec2d PrevToParamOnS2(prevPntOnS2, ParamPntOnS2);
gp_Vec2d PrevToCurOnS2(prevPntOnS2, curPntOnS2);
Standard_Real MaxAngle = 3*M_PI/4;
Standard_Real anAngleS1 = 0.0, anAngleS2 = 0.0;
const Standard_Real aSQMParS1 = PrevToParamOnS1.SquareMagnitude();
const Standard_Real aSQMParS2 = PrevToParamOnS2.SquareMagnitude();
const Standard_Real aSQMCurS1 = PrevToCurOnS1.SquareMagnitude();
const Standard_Real aSQMCurS2 = PrevToCurOnS2.SquareMagnitude();
if (Abs(PrevToParamOnS1.Angle(PrevToCurOnS1)) > MaxAngle &&
Abs(PrevToParamOnS2.Angle(PrevToCurOnS2)) > MaxAngle)
if(aSQMCurS1 < gp::Resolution())
{
//We came back to the one of previos point.
//Therefore, we must break;
anAngleS1 = M_PI;
}
else if(aSQMParS1 < gp::Resolution())
{
//We are walking along tangent zone.
//It should be continued.
anAngleS1 = 0.0;
}
else
{
anAngleS1 = Abs(PrevToParamOnS1.Angle(PrevToCurOnS1));
}
if(aSQMCurS2 < gp::Resolution())
{
//We came back to the one of previos point.
//Therefore, we must break;
anAngleS2 = M_PI;
}
else if(aSQMParS2 < gp::Resolution())
{
//We are walking along tangent zone.
//It should be continued;
anAngleS2 = 0.0;
}
else
{
anAngleS2 = Abs(PrevToParamOnS2.Angle(PrevToCurOnS2));
}
if ((anAngleS1 > MaxAngle) && (anAngleS2 > MaxAngle))
{
Arrive = Standard_True;
break;

25
tests/bugs/modalg_5/bug25898 Executable file
View File

@ -0,0 +1,25 @@
puts "================"
puts "OCC25898"
puts "================"
puts ""
#######################################################################
# Wrong result obtained by intersection algorithm.
#######################################################################
# Before fix intersection algorithm threw an exception.
restore [locate_data_file bug25898_x001_1.draw] s1
restore [locate_data_file bug25898_x001_2.draw] s2
set CurveNumb [intersect i s1 s2]
if { [llength ${CurveNumb}] != 2 } {
puts "Error : Wrong result obtained by intersection algorithm."
} else {
puts "OK : Good result obtained by intersection algorithm."
}
smallview
fit
set only_screen_axo 1