[vtk-developers] possible bug in vtk 7.1 - OpenGL2

[Ken Martin]

What happens if you remove the TextureMapToPlane? PlaneSource generates
texture coordinate by default. So connect that directly to the mapper and
what happens?

On Fri, Aug 12, 2016 at 12:21 PM, Roberto Gori <r.gori at cineca.it> wrote:

> Hi,
>
> sorry for cross-posting but no one is answering to my question on the
> vtkusers list.
>
> As you can see running this code the plane is visualized without texture.
>
> I think the problem is in rendering a texture on a vtkFollower.
> Can someone open a bug on Mantis?
>
>
> #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;
> }
>
>
>
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-- 
Ken Martin PhD
Chairman & CFO
Kitware Inc.
28 Corporate Drive
Clifton Park NY 12065
518 371 3971

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