@seanm
Thank you very much. I’ve got some good progress over here! I successfully compiled VTK 8.2.0 using clang.
Now, I tried to run the Cylinder Example with Qt Creator, which works like a charm as long as I compile it with clang as well.
However, in our project we are using GCC, so I tried to compile the example with the latter (using the VTK library compiled with clang) and it indeed compiles and links. Unfortunately, I only get a black screen as output then.
Do you have any idea or hint to solve that?
This is the *.pro file I used (which I created by myself):
TEMPLATE = app
SOURCES += CylinderExample.cxx
INCLUDEPATH += /Users/Shared/Development/VTK-8.2.0_clang/install/include/vtk-8.2
LIBS += \
-L/Users/Shared/Development/VTK-8.2.0_clang/install/lib \
-lvtkCommonColor-8.2 \
-lvtkCommonCore-8.2 \
-lvtkFiltersSources-8.2 \
-lvtkInteractionStyle-8.2 \
-lvtkRenderingContextOpenGL2-8.2 \
-lvtkRenderingCore-8.2 \
-lvtkRenderingFreeType-8.2 \
-lvtkRenderingGL2PSOpenGL2-8.2 \
-lvtkRenderingOpenGL2-8.2 \
-lvtkCommonExecutionModel-8.2 \
This is the CylinderExample.cxx with an added define in the beginning to make it work:
#define vtkRenderingCore_AUTOINIT 2(vtkRenderingOpenGL2, vtkInteractionStyle)
#include <vtkActor.h>
#include <vtkCamera.h>
#include <vtkCylinderSource.h>
#include <vtkNamedColors.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkSmartPointer.h>
#include <array>
int main(int, char *[]) {
vtkSmartPointer<vtkNamedColors> colors =
vtkSmartPointer<vtkNamedColors>::New();
// Set the background color.
std::array<unsigned char, 4> bkg{{26, 51, 102, 255}};
colors->SetColor("BkgColor", bkg.data());
// This creates a polygonal cylinder model with eight circumferential facets
// (i.e, in practice an octagonal prism).
vtkSmartPointer<vtkCylinderSource> cylinder =
vtkSmartPointer<vtkCylinderSource>::New();
cylinder->SetResolution(8);
// The mapper is responsible for pushing the geometry into the graphics
// library. It may also do color mapping, if scalars or other attributes are
// defined.
vtkSmartPointer<vtkPolyDataMapper> cylinderMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
cylinderMapper->SetInputConnection(cylinder->GetOutputPort());
// The actor is a grouping mechanism: besides the geometry (mapper), it
// also has a property, transformation matrix, and/or texture map.
// Here we set its color and rotate it around the X and Y axes.
vtkSmartPointer<vtkActor> cylinderActor = vtkSmartPointer<vtkActor>::New();
cylinderActor->SetMapper(cylinderMapper);
cylinderActor->GetProperty()->SetColor(
colors->GetColor4d("Tomato").GetData());
cylinderActor->RotateX(30.0);
cylinderActor->RotateY(-45.0);
// The renderer generates the image
// which is then displayed on the render window.
// It can be thought of as a scene to which the actor is added
vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();
renderer->AddActor(cylinderActor);
renderer->SetBackground(colors->GetColor3d("BkgColor").GetData());
// Zoom in a little by accessing the camera and invoking its "Zoom" method.
renderer->ResetCamera();
renderer->GetActiveCamera()->Zoom(1.5);
// The render window is the actual GUI window
// that appears on the computer screen
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->SetSize(300, 300);
renderWindow->AddRenderer(renderer);
renderWindow->SetWindowName("Cylinder");
// The render window interactor captures mouse events
// and will perform appropriate camera or actor manipulation
// depending on the nature of the events.
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
renderWindowInteractor->SetRenderWindow(renderWindow);
// This starts the event loop and as a side effect causes an initial render.
renderWindow->Render();
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}