VTK+Qt带颜色点云显示

   struct PointRGB
{
double x;
double y;
double z;
double r;
double g;
double b;
};

void Vtk_RGB_Point()

{ 

vtkSmartPointer<vtkRenderer> Renderer = vtkSmartPointer<vtkRenderer>::New();

        vector<PointRGB> pointrgb;

vtkSmartPointer<vtkActor> anActor = vtkSmartPointer<vtkActor>::New();
vtkSmartPointer<vtkPolyVertex>polyVertex = vtkSmartPointer<vtkPolyVertex>::New();
vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New();
vtkSmartPointer<vtkLookupTable> lut = vtkSmartPointer<vtkLookupTable>::New();
vtkSmartPointer<vtkFloatArray>pointsScalars = vtkSmartPointer<vtkFloatArray>::New();
vtkSmartPointer<vtkUnstructuredGrid> aGrid = vtk