feat: beaching of particles

particle-track-and-trace/src/commands/SpawnPointCallback.cpp

@@ -42,9 +42,11 @@ void SpawnPointCallback::Execute(vtkObject *caller, unsigned long evId, void *ca
     inverseCartographicProjection->MultiplyPoint(worldPos, worldPos);
 
     points->InsertNextPoint(worldPos[0], worldPos[1], 0);
+    this->particlesBeached->InsertNextValue(0);
 
     // FIXME:  The below lines cause some weird interaction with our vtkTimer. 
     // see github issue  https://github.com/MakeNEnjoy/interactive-track-and-trace/issues/28
+    this->particlesBeached->Modified();
     this->points->Modified();
     ren->GetRenderWindow()->Render();
 }
@@ -76,3 +78,7 @@ void SpawnPointCallback::setUVGrid(const std::shared_ptr<UVGrid> &uvGrid) {
   inverseCartographicProjection = getCartographicTransformMatrix(uvGrid);
   inverseCartographicProjection->Invert();
 }
+
+void SpawnPointCallback::setBeached(const vtkSmartPointer<vtkIntArray> &ints) {
+  this->particlesBeached = ints;
+}

particle-track-and-trace/src/commands/SpawnPointCallback.h

@@ -23,12 +23,15 @@ public:
 
   void setRen(const vtkSmartPointer<vtkRenderer> &ren);
 
+  void setBeached(const vtkSmartPointer<vtkIntArray> &parts);
+
   void setUVGrid(const std::shared_ptr<UVGrid> &uvGrid);
 
 private:
   vtkSmartPointer<vtkPolyData> data;
   vtkSmartPointer<vtkPoints> points;
   vtkSmartPointer<vtkRenderer> ren;
+  vtkSmartPointer<vtkIntArray> particlesBeached;
   std::shared_ptr<UVGrid> uvGrid;
   vtkSmartPointer<vtkMatrix4x4> inverseCartographicProjection;