0024016: Test case bugs moddata_2 bug324 works not correct after integration of the...

[occt.git] / src / IntPatch / IntPatch_ImpImpIntersection_2.gxx

diff --git a/src/IntPatch/IntPatch_ImpImpIntersection_2.gxx b/src/IntPatch/IntPatch_ImpImpIntersection_2.gxx
index ecf851f..3984ca5 100755 (executable)
--- a/src/IntPatch/IntPatch_ImpImpIntersection_2.gxx
+++ b/src/IntPatch/IntPatch_ImpImpIntersection_2.gxx
@@ -101,7 +101,12 @@ void IntPatch_ImpImpIntersection::Perform(const Handle(Adaptor3d_HSurface)&  S1,
       case GeomAbs_Cylinder:
        {
          quad2.SetValue(S2->Cylinder());
-          Standard_Real H = S1->LastVParameter() - S1->FirstVParameter();
+          Standard_Real VMin, VMax, H;
+          //
+          VMin = S1->FirstVParameter();
+          VMax = S1->LastVParameter();
+          H = (Precision::IsNegativeInfinite(VMin) || 
+               Precision::IsPositiveInfinite(VMax)) ? 0 : (VMax - VMin);
          if (!IntPCy(quad1,quad2,Tolang,TolTang,Standard_False,empt,slin,H)) {
            return;
          }
@@ -158,7 +163,12 @@ void IntPatch_ImpImpIntersection::Perform(const Handle(Adaptor3d_HSurface)&  S1,
       case GeomAbs_Plane:
        {
          quad2.SetValue(S2->Plane());
-          Standard_Real H = S1->LastVParameter() - S1->FirstVParameter();
+          Standard_Real VMin, VMax, H;
+          //
+          VMin = S1->FirstVParameter();
+          VMax = S1->LastVParameter();
+          H = (Precision::IsNegativeInfinite(VMin) || 
+               Precision::IsPositiveInfinite(VMax)) ? 0 : (VMax - VMin);
          if (!IntPCy(quad1,quad2,Tolang,TolTang,Standard_True,empt,slin,H)) {
            return;
          }