0026914: [Regression 7.0alpha] Hang in surface approximation

Change a constructor of evaluator for offset surfaces

Test-case for issue #26914

src/GeomEvaluator/GeomEvaluator_OffsetSurface.cxx

@@ -65,22 +65,9 @@ GeomEvaluator_OffsetSurface::GeomEvaluator_OffsetSurface(
         const Handle(Geom_OsculatingSurface)& theOscSurf)
   : GeomEvaluator_Surface(),
     myBaseAdaptor(theBase),
-    myOffset(theOffset)
+    myOffset(theOffset),
+    myOscSurf(theOscSurf)
 {
-  if (theOscSurf.IsNull())
-    return; // osculating surface already exists
-
-  // Create osculating surface for B-spline and Besier surfaces only
-  Handle(Geom_Surface) aBSurf;
-  if (myBaseAdaptor->GetType() == GeomAbs_BSplineSurface)
-    aBSurf = myBaseAdaptor->BSpline();
-  else if (myBaseAdaptor->GetType() == GeomAbs_BezierSurface)
-    aBSurf = myBaseAdaptor->Bezier();
-  if (!aBSurf.IsNull())
-  {
-    myBaseSurf = aBSurf;
-    myOscSurf = new Geom_OsculatingSurface(aBSurf, Precision::Confusion());
-  }
 }
 
 void GeomEvaluator_OffsetSurface::D0(

tests/bugs/modalg_6/bug26914

@@ -0,0 +1,25 @@
+puts "========"
+puts "OCC26914"
+puts "========"
+puts ""
+#################################
+# Hang in surface approximation
+#################################
+
+set max_time 2
+
+restore [locate_data_file OCC26914-a_2773_draw.draw] s
+
+dchrono cr reset
+dchrono cr start
+approxsurf rs s 5e-5 0 0 15 15 100 0
+
+dchrono cr stop
+
+set chrono_info [dchrono cr show]
+regexp {CPU user time: ([-0-9.+eE]+) seconds} $chrono_info full CPU_time
+if { $CPU_time > ${max_time} } {
+  puts "Elapsed time of surface approximation is more than ${max_time} seconds - Error"
+} else {
+  puts "Elapsed time of surface approximation is less than ${max_time} seconds - OK"
+}