[vtkusers] vtkOBJReader example for C++

[shayan moradkhani]

int main(int, char *[])
{
	std::string filename = "Part3.obj";
	vtkSmartPointer<vtkOBJReader> reader =
vtkSmartPointer<vtkOBJReader>::New();
	reader->SetFileName(filename.c_str());
	reader->Update();
	// Visualize
	vtkSmartPointer<vtkPolyDataMapper> mapper =
		vtkSmartPointer<vtkPolyDataMapper>::New();
	mapper->SetInputConnection(reader->GetOutputPort());
	
	vtkSmartPointer<vtkActor> actor =
		vtkSmartPointer<vtkActor>::New();
	actor->SetMapper(mapper);
	actor->GetProperty()->SetColor(1.0000, 0.3882, 0.2784);
	

	vtkSmartPointer<vtkRenderer> renderer =
		vtkSmartPointer<vtkRenderer>::New();
	renderer->AddActor(actor);
	renderer->SetBackground(.1, .3, .3); // Background color green	
	// Zoom in a little by accessing the camera and invoking its "Zoom" method.
	renderer->ResetCamera();
	//renderer->GetActiveCamera()->Zoom(1.5);

	vtkSmartPointer<vtkRenderWindow> renderWindow =
		vtkSmartPointer<vtkRenderWindow>::New();
	renderWindow->SetSize(800, 600);
	renderWindow->AddRenderer(renderer);

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



	renderWindowInteractor->Start();

	return EXIT_SUCCESS;
}

this is what i have. however, when i load in vtk, i have no idead where the
model is loaded (with respect to the global coordinate system). if i could
get its center, it would be easier i guess to apply transformation on the
object



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