0025340: Visualization, AIS_InteractiveContext - properly apply selection filters at Neutral point

Do not use myMainSel->OnePicked() in AIS_InteractiveContext::MoveTo().

Test-case for issue #25340

src/AIS/AIS_InteractiveContext_1.cxx

@@ -157,6 +157,7 @@ AIS_StatusOfDetection AIS_InteractiveContext::MoveTo (const Standard_Integer  th
   // filling of myAISDetectedSeq sequence storing information about detected AIS objects
   // (the objects must be AIS_Shapes)
   const Standard_Integer aDetectedNb = myMainSel->NbPicked();
+  Standard_Integer aNewDetected = 0;
   for (Standard_Integer aDetIter = 1; aDetIter <= aDetectedNb; ++aDetIter)
   {
     Handle(SelectMgr_EntityOwner) anOwner = myMainSel->Picked (aDetIter);
@@ -166,6 +167,10 @@ AIS_StatusOfDetection AIS_InteractiveContext::MoveTo (const Standard_Integer  th
       continue;
     }
 
+    if (aNewDetected < 1)
+    {
+      aNewDetected = aDetIter;
+    }
     Handle(AIS_InteractiveObject) anObj = Handle(AIS_InteractiveObject)::DownCast (anOwner->Selectable());
     if (!anObj.IsNull())
     {
@@ -173,11 +178,11 @@ AIS_StatusOfDetection AIS_InteractiveContext::MoveTo (const Standard_Integer  th
     }
   }
 
-  myMainSel->Init();
+  if (aNewDetected >= 1)
-  if (myMainSel->More())
   {
     // does nothing if previously detected object is equal to the current one
-    if (myMainSel->OnePicked()->Selectable() == myLastPicked)
+    Handle(SelectMgr_EntityOwner) aNewPickedOwner = myMainSel->Picked (aNewDetected);
+    if (aNewPickedOwner->Selectable() == myLastPicked)
     {
       return myLastPicked->State() == 1
            ? AIS_SOD_Selected
@@ -205,7 +210,7 @@ AIS_StatusOfDetection AIS_InteractiveContext::MoveTo (const Standard_Integer  th
     }
 
     // initialize myLastPicked field with currently detected object
-    myLastPicked = Handle(AIS_InteractiveObject)::DownCast (myMainSel->OnePicked()->Selectable());
+    myLastPicked = Handle(AIS_InteractiveObject)::DownCast (aNewPickedOwner->Selectable());
     myLastinMain = myLastPicked;
 
     // highlight detected object if it is not selected or myToHilightSelected flag is true

src/QABugs/QABugs_19.cxx

@@ -2882,6 +2882,22 @@ static Standard_Integer OCC7570 (Draw_Interpretor& di, Standard_Integer n, const
   return 0;
 }
 
+#include <AIS_TypeFilter.hxx>
+static Standard_Integer OCC25340 (Draw_Interpretor& /*theDI*/,
+                                 Standard_Integer  /*theArgNb*/,
+                                 const char** /*theArgVec*/)
+{
+  Handle(AIS_InteractiveContext) aCtx = ViewerTest::GetAISContext();
+  if (aCtx.IsNull())
+  {
+    std::cerr << "Error: No opened viewer!\n";
+    return 1;
+  }
+  Handle(AIS_TypeFilter) aFilter = new AIS_TypeFilter (AIS_KOI_Shape);
+  aCtx->AddFilter (aFilter);
+  return 0;
+}
+
 /*****************************************************************************/
 
 #include <GeomAPI_IntSS.hxx>
@@ -2978,5 +2994,6 @@ void QABugs::Commands_19(Draw_Interpretor& theCommands) {
   theCommands.Add ("OCC25202", "OCC25202 res shape numF1 face1 numF2 face2", __FILE__, OCC25202, group);
   theCommands.Add ("OCC7570", "OCC7570 shape", __FILE__, OCC7570, group);
   theCommands.Add ("OCC25100", "OCC25100 shape", __FILE__, OCC25100, group);
+  theCommands.Add ("OCC25340", "OCC25340", __FILE__, OCC25340, group);
   return;
 }

tests/bugs/vis/bug25340

@@ -0,0 +1,36 @@
+puts "========"
+puts "OCC25340"
+puts "========"
+puts ""
+#############################################################################################
+# Visualization, AIS_InteractiveContext - properly apply selection filters at Neutral point
+#############################################################################################
+
+pload QAcommands
+
+vinit
+
+box b 1 2 3
+vdisplay b
+vfit
+vtrihedron t
+set color_1 [vreadpixel 87 25]
+
+OCC25340
+vselect 87 25
+set color_2 [vreadpixel 87 25]
+
+if {$color_2 != $color_1} {
+  puts "ERROR: OCC25340 is reproduced"
+  puts "       initial color of trihedron is: $color_1"
+  puts "       final color of trihedron is:   $color_2"
+}
+
+if {$color_2 != "0.43137255311012268 0.48235294222831726 0.54509806632995605 1"} {
+  puts "ERROR: OCC25340 is reproduced"
+  puts "       additional investigation is needed"
+  puts "       expected color is: 0.43137255311012268 0.48235294222831726 0.54509806632995605 1"
+  puts "       current color is:  $_color_2"
+}
+
+set only_screen 1