vtkParticleTracerBase: Fix MeshOverTime not being set

Filters/FlowPaths/vtkParticleTracerBase.cxx

@@ -370,10 +370,25 @@ int vtkParticleTracerBase::RequestUpdateExtent(vtkInformation* vtkNotUsed(reques
   return 1;
 }
 
+//------------------------------------------------------------------------------
+void vtkParticleTracerBase::SetMeshOverTime(int meshOverTime)
+{
+  if (this->MeshOverTime !=
+    (meshOverTime < DIFFERENT ? DIFFERENT
+                              : (meshOverTime > SAME_TOPOLOGY ? SAME_TOPOLOGY : meshOverTime)))
+  {
+    this->MeshOverTime =
+      (meshOverTime < DIFFERENT ? DIFFERENT
+                                : (meshOverTime > SAME_TOPOLOGY ? SAME_TOPOLOGY : meshOverTime));
+    this->Modified();
+    // Needed since the value needs to be set at the same time.
+    this->Interpolator->SetMeshOverTime(this->MeshOverTime);
+  }
+}
+
 //------------------------------------------------------------------------------
 void vtkParticleTracerBase::SetInterpolatorType(int interpolatorType)
 {
-  this->Interpolator->SetMeshOverTime(this->MeshOverTime);
   if (interpolatorType == INTERPOLATOR_WITH_CELL_LOCATOR)
   {
     // create an interpolator equipped with a cell locator (by default)
@@ -431,7 +446,7 @@ int vtkParticleTracerBase::InitializeInterpolator()
     return VTK_ERROR;
   }
 
-  // create Interpolator if needed
+  // set strategy if needed
   if (this->Interpolator->GetFindCellStrategy() == nullptr)
   {
     // cell locator is the default;

Filters/FlowPaths/vtkParticleTracerBase.h

@@ -229,7 +229,9 @@ public:
    * LINEAR_TRANSFORMATION = 2
    * SAME_TOPOLOGY = 3
    */
-  vtkSetClampMacro(MeshOverTime, int, DIFFERENT, LINEAR_TRANSFORMATION);
+  virtual void SetMeshOverTime(int meshOverTime);
+  virtual int GetMeshOverTimeMinValue() { return DIFFERENT; }
+  virtual int GetMeshOverTimeMaxValue() { return SAME_TOPOLOGY; }
   void SetMeshOverTimeToDifferent() { this->SetMeshOverTime(DIFFERENT); }
   void SetMeshOverTimeToStatic() { this->SetMeshOverTime(STATIC); }
   void SetMeshOverTimeToLinearTransformation() { this->SetMeshOverTime(LINEAR_TRANSFORMATION); }

Filters/FlowPaths/vtkTemporalInterpolatedVelocityField.h

@@ -108,7 +108,7 @@ public:
    * LINEAR_TRANSFORMATION = 2
    * SAME_TOPOLOGY = 3
    */
-  vtkSetClampMacro(MeshOverTime, int, DIFFERENT, LINEAR_TRANSFORMATION);
+  vtkSetClampMacro(MeshOverTime, int, DIFFERENT, SAME_TOPOLOGY);
   void SetMeshOverTimeToDifferent() { this->SetMeshOverTime(DIFFERENT); }
   void SetMeshOverTimeToStatic() { this->SetMeshOverTime(STATIC); }
   void SetMeshOverTimeToLinearTransformation() { this->SetMeshOverTime(LINEAR_TRANSFORMATION); }