Hi, I’m really new in vtk. I need to defining a path inside the RGrid example, by coloring a certain number of specific cells. This is the code
#include <vtkActor.h>
#include <vtkCamera.h>
#include <vtkFloatArray.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkRectilinearGrid.h>
#include <vtkRectilinearGridGeometryFilter.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include
int main()
{
vtkNew colors;
std::array<int, 16> x = {
{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}};
std::array<int, 16> y = {
{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15} };
std::array<int, 16> z = {
{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}};
// Create a rectilinear grid by defining three arrays specifying the
// coordinates in the x-y-z directions.
vtkNew xCoords;
for (auto&& i : x)
{
xCoords->InsertNextValue(i);
}
vtkNew yCoords;
for (auto&& i : y)
{
yCoords->InsertNextValue(i);
}
vtkNew zCoords;
for (auto&& i : z)
{
zCoords->InsertNextValue(i);
}
// The coordinates are assigned to the rectilinear grid. Make sure that
// the number of values in each of the XCoordinates, YCoordinates,
// and ZCoordinates is equal to what is defined in SetDimensions().
//
vtkNew rgrid;
rgrid->SetDimensions(int(x.size()), int(y.size()), int(z.size()));
rgrid->SetXCoordinates(xCoords);
rgrid->SetYCoordinates(yCoords);
rgrid->SetZCoordinates(zCoords);
// Extract a plane from the grid to see what we’ve got.
vtkNew plane;
plane->SetInputData(rgrid);
plane->SetExtent(0, 46, 16, 16, 0, 43);
vtkNew rgridMapper;
rgridMapper->SetInputConnection(plane->GetOutputPort());
vtkNew wireActor;
wireActor->SetMapper(rgridMapper);
wireActor->GetProperty()->SetRepresentationToWireframe();
wireActor->GetProperty()->SetColor(colors->GetColor3d(“Black”).GetData());
// Create the usual rendering stuff.
vtkNew renderer;
vtkNew renWin;
renWin->AddRenderer(renderer);
vtkNew iren;
iren->SetRenderWindow(renWin);
renderer->AddActor(wireActor);
renderer->SetBackground(1, 1, 1);
renderer->ResetCamera();
renderer->GetActiveCamera()->Elevation(30.0);
renderer->GetActiveCamera()->Azimuth(15.0);
renderer->GetActiveCamera()->Zoom(1.0);
renderer->SetBackground(colors->GetColor3d(“Beige”).GetData());
renWin->SetSize(600, 600);
// interact with data
renWin->Render();
iren->Start();
return EXIT_SUCCESS;
}
How can I do it?