[vtkusers] vtkFollower doesn't render textures in vtk 7.1 with OpenGL2?

[Roberto Gori]

Hi,

this code isn’t working for me ... The plane is visualized without texture.

#include <vtkImageData.h>
#include <vtkJPEGReader.h>
#include <vtkPolyDataMapper.h>
#include <vtkPolyData.h>
#include <vtkSmartPointer.h>
#include <vtkTextureMapToPlane.h>
#include <vtkPlaneSource.h>
#include <vtkTexture.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkFollower.h>
#include <vtkVersion.h>

int main ( int argc, char *argv[] )
{
// Parse command line arguments
if ( argc != 2 )
{
std::cerr << "Usage: " << argv[0] << " Filename" << std::endl;
return EXIT_FAILURE;
}

std::cout << "VTK version:" << vtkVersion::GetVTKVersion() << std::endl;

std::string inputFilename = argv[1];

// Read the image which will be the texture
vtkSmartPointer<vtkJPEGReader> jPEGReader =
vtkSmartPointer<vtkJPEGReader>::New();
jPEGReader->SetFileName ( inputFilename.c_str() );

// Create a plane
vtkSmartPointer<vtkPlaneSource> plane =
vtkSmartPointer<vtkPlaneSource>::New();
plane->SetCenter(0.0, 0.0, 0.0);
plane->SetNormal(0.0, 0.0, 1.0);

// Apply the texture
vtkSmartPointer<vtkTexture> texture =
vtkSmartPointer<vtkTexture>::New();
texture->SetInputConnection(jPEGReader->GetOutputPort());

vtkSmartPointer<vtkTextureMapToPlane> texturePlane =
vtkSmartPointer<vtkTextureMapToPlane>::New();
texturePlane->SetInputConnection(plane->GetOutputPort());

vtkSmartPointer<vtkPolyDataMapper> planeMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
planeMapper->SetInputConnection(texturePlane->GetOutputPort());

vtkSmartPointer<vtkFollower> texturedPlane =
vtkSmartPointer<vtkFollower>::New();
texturedPlane->SetMapper(planeMapper);
texturedPlane->SetTexture(texture);


// Visualize the textured plane
vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
renderer->AddActor(texturedPlane);

renderer->SetBackground(.1, .2, .3); // Background color dark blue
renderer->ResetCamera();

texturedPlane->SetCamera(renderer->GetActiveCamera());


vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->AddRenderer(renderer);

vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
renderWindowInteractor->SetRenderWindow(renderWindow);

renderWindow->Render();

renderWindowInteractor->Start();

return EXIT_SUCCESS;
}