[vtkusers] Help with VTK on Xcode

[Paulo Alexandre Neves]

Hello all.

My name is Paulo Neves, I am a PhD student at University of Beira Interior.

I am trying to use VTK with Xcode 4 on Mac OS X 10.6.8. For the moment I only want to access the features it provides, not for extension.
I installed VTK 5.6.1 through Macports. As expected, I get a bunch of include files and dylib files.

I create a new project in Xcode (command line, C++) to run a simple
example code:

#include "vtkSphereSource.h"
#include "vtkPolyDataMapper.h"
#include "vtkProperty.h"
#include "vtkActor.h"
#include "vtkRenderWindow.h"
#include "vtkRenderer.h"
#include "vtkRenderWindowInteractor.h"

int main ()
{

	// create sphere geometry
	vtkSphereSource *sphere = vtkSphereSource::New();
	sphere->SetRadius(1.0);
	sphere->SetThetaResolution(18);
	sphere->SetPhiResolution(18);

	// map to graphics library
	vtkPolyDataMapper *map = vtkPolyDataMapper::New();
	map->SetInput(sphere->GetOutput());

	// actor coordinates geometry, properties, transformation
	vtkActor *aSphere = vtkActor::New();
	aSphere->SetMapper(map);
	aSphere->GetProperty()->SetColor(0,0,1); // sphere color blue

	// a renderer and render window
	vtkRenderer *ren1 = vtkRenderer::New();
	vtkRenderWindow *renWin = vtkRenderWindow::New();
	renWin->AddRenderer(ren1);

	// an interactor
	vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();
	iren->SetRenderWindow(renWin);

	// add the actor to the scene
	ren1->AddActor(aSphere);
	ren1->SetBackground(1,1,1); // Background color white

	// render an image (lights and cameras are created automatically)
	renWin->Render();

	// begin mouse interaction
	iren->Start();
	// release memory and return
	sphere->Delete();
	map->Delete();
	aSphere->Delete();
	ren1->Delete();
	renWin->Delete();
	iren->Delete();
	return EXIT_SUCCESS;
}

The project compiles fine, but gives linking errors. This is the first
time I am using dylibs on Xcode, previously only used static ones.

My question is how can I make Xcode recognize the code inside the
libraries, namely the code referenced by the header files of the example?
I tried copying the /opt/local/lib/vtk-5.6 directory where all dylibs are
to the project, add -L/opt/local/lib/vtk5.6 to other linker flags, to no
avail.

I get the following errors:
"
Undefined symbols for architecture x86_64:
 "vtkSphereSource::New()", referenced from:
     _main in main.o
 "vtkPolyDataMapper::New()", referenced from:
     _main in main.o
 "vtkPolyDataAlgorithm::GetOutput()", referenced from:
     _main in main.o
 "vtkPolyDataMapper::SetInput(vtkPolyData*)", referenced from:
     _main in main.o
 "vtkActor::New()", referenced from:
     _main in main.o
 "vtkActor::GetProperty()", referenced from:
     _main in main.o
 "vtkProperty::SetColor(double, double, double)", referenced from:
     _main in main.o
 "vtkRenderer::New()", referenced from:
     _main in main.o
 "vtkRenderWindow::New()", referenced from:
     _main in main.o
 "vtkRenderWindowInteractor::New()", referenced from:
     _main in main.o
 "vtkRenderWindowInteractor::SetRenderWindow(vtkRenderWindow*)",
referenced from:
     _main in main.o
 "vtkRenderer::AddActor(vtkProp*)", referenced from:
     _main in main.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see
invocation)
"
Sorry for the long post, but I am searching for a solution in the web for
3 days now... It's driving me mad :(. Any help will be much appreciated.

Kind regards.
___________________________________________________________________
Paulo Alexandre Neves


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