Edit the text property of vtkAnnotatedCubeActor

Support
1

I tried to make vtkAnnotatedCubeActor to display Chinese and some other languages, but I found that it’s not realistic to just SetXPlusFaceText(**Other font**) like this. So I refers to use vtkTextActor to display chinese - Support - VTK and try to get the vtkTextActor inside the vtkAnnotatedCubeActor, with code like this:

	vtkSmartPointer<vtkAnnotatedCubeActor> annotated_cube = vtkSmartPointer<vtkAnnotatedCubeActor>::New();
	annotated_cube->SetFaceTextScale(1.0 / 1.6);

	vtkSmartPointer<vtkPropCollection> props = vtkSmartPointer<vtkPropCollection>::New();
	annotated_cube->GetActors(props);
	props->InitTraversal();
	vtkProp* prop;
	while ((prop = props->GetNextProp()) != nullptr) {
		vtkTextActor* actor = vtkTextActor::SafeDownCast(prop);
		if (actor) {
			actor->SetInput("V"); // V just for test if vtkTextActor works
		}
	}

But inside the vtkAnnotatedCubeActor shows:

  vtkActor           *XPlusFaceActor;
  vtkActor           *XMinusFaceActor;
  vtkActor           *YPlusFaceActor;
  vtkActor           *YMinusFaceActor;
  vtkActor           *ZPlusFaceActor;
  vtkActor           *ZMinusFaceActor;

and

 //@{
  /**
   * Set/get the face text.
   */
  vtkSetStringMacro( XPlusFaceText );
  vtkGetStringMacro( XPlusFaceText );
  vtkSetStringMacro( XMinusFaceText );
  vtkGetStringMacro( XMinusFaceText );
  vtkSetStringMacro( YPlusFaceText );
  vtkGetStringMacro( YPlusFaceText );
  vtkSetStringMacro( YMinusFaceText );
  vtkGetStringMacro( YMinusFaceText );
  vtkSetStringMacro( ZPlusFaceText );
  vtkGetStringMacro( ZPlusFaceText );
  vtkSetStringMacro( ZMinusFaceText );
  vtkGetStringMacro( ZMinusFaceText );

I have no idea how to edit the TextProperty. Could you give me some advice? Great Thanks!
(If change the TextProperty won’t work, I also did another solution2 but I have no idea why it didn’t work…)

2

To display in an annotatedcube-like things, I tried to use vtkAssembly as well. This is the solution2 to fix the problem.

I thought that if I defined a cube and just map the pictures to each plane of the cube will work, so I don’t have to worry about the font stuff.

I refered to examples.vtk.org/site/Cxx/Visualization/TextureMapPlane/, and tried to load JPEG/PNG pictures to vtkTextures like heres:

vtkSmartPointer<vtkActor> LoadTextureFace(const char* filename, const std::array<double, 3>& center, const std::array<double, 3>& normal) {

	// create plane
	vtkSmartPointer<vtkPlaneSource> plane = vtkSmartPointer<vtkPlaneSource>::New();
	plane->SetCenter(center[0], center[1], center[2]);
	plane->SetNormal(normal[0], normal[1], normal[2]);
	plane->Update();

	vtkSmartPointer<vtkJPEGReader> reader = vtkSmartPointer<vtkJPEGReader>::New();
	reader->SetFileName(filename);

	// load texture
	vtkSmartPointer<vtkTexture> texture = vtkSmartPointer<vtkTexture>::New();
	texture->SetInputConnection(reader->GetOutputPort());
	texture->Update();

	vtkNew<vtkTextureMapToPlane> texturePlane;
	texturePlane->SetInputConnection(plane->GetOutputPort());
	texturePlane->Update();

	vtkSmartPointer<vtkPolyDataMapper> planeMapper = vtkSmartPointer<vtkPolyDataMapper>::New();
	planeMapper->SetInputConnection(texturePlane->GetOutputPort());

	vtkSmartPointer<vtkActor> faceActor = vtkSmartPointer<vtkActor>::New();
	faceActor->SetMapper(planeMapper);
	faceActor->SetTexture(texture);
	faceActor->Modified();

	return faceActor;
}

Outside the functions, I defined the assembly like here:

	vtkSmartPointer<vtkAssembly> m_pWidget2 = vtkSmartPointer<vtkAssembly>::New();

	double cubeSize = 1;
	m_pWidget2->AddPart(LoadTextureFace(**path1**, { -cubeSize / 2, 0, 0 }, { -cubeSize, 0, 0 }));   // X-
	m_pWidget2->AddPart(LoadTextureFace(**path2**, { cubeSize / 2, 0, 0 }, { cubeSize, 0, 0 }));   // X+
	m_pWidget2->AddPart(LoadTextureFace(**path3**, { 0, -cubeSize / 2, 0 }, { 0, -cubeSize, 0 }));   // Y-
	m_pWidget2->AddPart(LoadTextureFace(**path4**, { 0, cubeSize / 2, 0 }, { 0, cubeSize, 0 }));   // Y+
	m_pWidget2->AddPart(LoadTextureFace(**path5**, { 0, 0, -cubeSize / 2 }, { 0, 0, -cubeSize })); // Z-
	m_pWidget2->AddPart(LoadTextureFace(**path6**, { 0, 0, cubeSize / 2 }, { 0, 0, cubeSize }));  // Z+

	m_pWidget2->DragableOff();

    // TO ACTIVATE IT
	m_pWidget->SetOrientationMarker(m_pWidget2);
	m_pWidget->SetCurrentRenderer(renderer);
	m_pWidget->SetInteractor(renderwindowiterator);
	m_pWidget->SetViewport(0.85, 0, 1, 0.15);
	m_pWidget->SetEnabled(1);
	m_pWidget->On();
	m_pWidget->InteractiveOff();

But as a result, nothing shows. I have no idea if I just ignore to define a vtkCubeSource or something else.

Here is the solution 2 to [display other languages at annotation cube], sorry for the TOO MUCH long issues and great thanks for your patience.
Could you please give me some advice? Best wishes.