[vtk-developers] possible bug in vtk 7.1 - OpenGL2
Roberto Gori
r.gori at cineca.it
Fri Aug 12 14:02:09 EDT 2016
wow! it works!
thank you so much!
From: Ken Martin
Sent: Friday, August 12, 2016 7:50 PM
To: Roberto Gori
Cc: VTK Developers
Subject: Re: [vtk-developers] possible bug in vtk 7.1 - OpenGL2
Yes, I suspect the class needs to be fixed. If you have a VTK build you can try editing vtkFollower.cxx to include the following line
this->Device->SetTexture(this->GetTexture());
around line number 272 (right before the ComputeMatrix call)
if that works I can put in a fix
Ken
On Fri, Aug 12, 2016 at 1:37 PM, Roberto Gori <r.gori at cineca.it> wrote:
Hi,
thx for your answer
you are right but the result is the same.
it works using a vtkActor instead of a vtkFollower.
From: Ken Martin
Sent: Friday, August 12, 2016 7:02 PM
To: Roberto Gori
Cc: VTK Developers
Subject: Re: [vtk-developers] possible bug in vtk 7.1 - OpenGL2
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
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28 Corporate Drive
Clifton Park NY 12065
518 371 3971
This communication, including all attachments, contains confidential and legally privileged information, and it is intended only for the use of the addressee. Access to this email by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution or any action taken in reliance on it is prohibited and may be unlawful. If you received this communication in error please notify us immediately and destroy the original message. Thank you.
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