#include <vtkActor.h>
#include <vtkCamera.h>
#include <vtkCylinderSource.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>

#include <array>

int main(int, char*[]) {
	vtkNew<vtkNamedColors> colors;

	// 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).
	vtkNew<vtkCylinderSource> cylinder;
	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.
	vtkNew<vtkPolyDataMapper> cylinderMapper;
	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.
	vtkNew<vtkActor> cylinderActor;
	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
	vtkNew<vtkRenderer> renderer;
	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
	vtkNew<vtkRenderWindow> renderWindow;
	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.
	vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
	renderWindowInteractor->SetRenderWindow(renderWindow);

	// This starts the event loop and as a side effect causes an initial render.
	renderWindow->Render();
	renderWindowInteractor->Start();

	return EXIT_SUCCESS;
}