This version allows to build a chamfer surface.

diff --git a/src/Blend/Blend_Walking_1.gxx b/src/Blend/Blend_Walking_1.gxx
index 44f18d3643c5e2584e8244caa6fae732800aa3e6..01fd619220446461c260f90cd6461cbfec2620df 100644 (file)
--- a/src/Blend/Blend_Walking_1.gxx
+++ b/src/Blend/Blend_Walking_1.gxx
@@ -200,7 +200,8 @@ Standard_Boolean Blend_Walking::PerformFirstSection(Blend_Function&     Func,
   ParDep = sol;
   Pos1 = domain1->Classify(gp_Pnt2d(sol(1), sol(2)), Min(tolerance(1), tolerance(2)), 0);
   Pos2 = domain2->Classify(gp_Pnt2d(sol(3), sol(4)), Min(tolerance(3), tolerance(4)), 0);
-  if (Pos1 != TopAbs_IN || Pos2 != TopAbs_IN)
+  //if (Pos1 != TopAbs_IN || Pos2 != TopAbs_IN)
+  if (Pos1 == TopAbs_OUT || Pos2 == TopAbs_OUT)
   {
     return Standard_False;
   }

diff --git a/src/Blend/Blend_Walking_4.gxx b/src/Blend/Blend_Walking_4.gxx
index 9cc1ab4f1158f1a158b905155ab9d8f7a01cbe8f..2ba04be8775f0bd308ec9d8eb02056f76df5f258 100644 (file)
--- a/src/Blend/Blend_Walking_4.gxx
+++ b/src/Blend/Blend_Walking_4.gxx
@@ -96,7 +96,9 @@ void Blend_Walking::InternalPerform(Blend_Function& Func,
 {
   Standard_Real Cosi = 0., Cosi2 = 0.;
 
-  Standard_Real stepw = pasmax;
+  Standard_Real stepw = pasmax, SaveStepw = 0.;
+  Standard_Boolean IsAlwaysON = Standard_False;
+  Standard_Boolean IsModeON = Standard_False;
   Standard_Integer nbp = line->NbPoints();
   if(nbp >= 2){ //On reprend le dernier step s'il n est pas trop petit.
     if(sens < 0.){
@@ -204,6 +206,21 @@ void Blend_Walking::InternalPerform(Blend_Function& Func,
     if(bonpoint && line->NbPoints() == 1 && (situ1 != TopAbs_IN || situ2 != TopAbs_IN)){
       State = Blend_StepTooLarge;
       bonpoint = 0;
+      if (situ1 != TopAbs_OUT && situ2 != TopAbs_OUT) //ON or IN
+      {
+        if (IsModeON)
+        {
+          bonpoint = 1;
+          situ1 = situ2 = TopAbs_IN;
+          State = Blend_OK;
+        }
+        else
+        {
+          if (IsAlwaysON == Standard_False)
+            SaveStepw = stepw;
+          IsAlwaysON = Standard_True;
+        }
+      }
     }
     if(bonpoint){
       w1 = w2 = Bound;
@@ -211,6 +228,12 @@ void Blend_Walking::InternalPerform(Blend_Function& Func,
       recad2 = Standard_False;
       echecrecad = Standard_False;
       control = Standard_False;
+      if (IsModeON && situ1 != TopAbs_OUT && situ2 != TopAbs_OUT)
+        situ1 = situ2 = TopAbs_IN;
+
+      if (IsModeON &&
+          (situ1 == TopAbs_OUT || situ2 == TopAbs_OUT))
+        situ1 = situ2 = TopAbs_OUT;
 
       if (situ1 == TopAbs_OUT || situ1 == TopAbs_ON) {
        // pb inverse sur surf1
@@ -516,23 +539,34 @@ void Blend_Walking::InternalPerform(Blend_Function& Func,
       {
        stepw = stepw/2.;
        if (Abs(stepw) < tolgui) {
-         Ext1.SetValue(previousP.PointOnS1(),
-                       sol(1),sol(2),
-                       previousP.Parameter(),tolesp);
-         Ext2.SetValue(previousP.PointOnS2(),
-                       sol(3),sol(4),
-                       previousP.Parameter(),tolesp);
-         if (!previousP.IsTangencyPoint()) {
-           Ext1.SetTangent(previousP.TangentOnS1());
-           Ext2.SetTangent(previousP.TangentOnS2());
-         }
-         Arrive = Standard_True;
-         if (line->NbPoints()>=2) {
-           // Indiquer qu on s arrete en cours de cheminement
-         }
-//       else {
-//         line->Clear();
-//       }
+          if (IsAlwaysON)
+          {
+            IsModeON = Standard_True;
+            stepw = SaveStepw;
+            param = parprec + sens*stepw;  // on ne risque pas de depasser Bound.
+            evalpinit(parinit,previousP,parprec,param,
+                      infbound,supbound, clasonS1, clasonS2);
+          }
+          else
+          {
+            Ext1.SetValue(previousP.PointOnS1(),
+                          sol(1),sol(2),
+                          previousP.Parameter(),tolesp);
+            Ext2.SetValue(previousP.PointOnS2(),
+                          sol(3),sol(4),
+                          previousP.Parameter(),tolesp);
+            if (!previousP.IsTangencyPoint()) {
+              Ext1.SetTangent(previousP.TangentOnS1());
+              Ext2.SetTangent(previousP.TangentOnS2());
+            }
+            Arrive = Standard_True;
+            if (line->NbPoints()>=2) {
+              // Indiquer qu on s arrete en cours de cheminement
+            }
+            //   else {
+            //     line->Clear();
+            //   }
+          }
        }
        else {
          param = parprec + sens*stepw;  // on ne risque pas de depasser Bound.