71 lines
2.4 KiB
C++
71 lines
2.4 KiB
C++
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#include <vtkActor.h>
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#include <vtkCamera.h>
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#include <vtkCylinderSource.h>
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#include <vtkNamedColors.h>
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#include <vtkNew.h>
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#include <vtkPolyDataMapper.h>
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#include <vtkProperty.h>
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#include <vtkRenderWindow.h>
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#include <vtkRenderWindowInteractor.h>
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#include <vtkRenderer.h>
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#include <array>
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int main(int, char*[]) {
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vtkNew<vtkNamedColors> colors;
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// Set the background color.
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std::array<unsigned char, 4> bkg{{26, 51, 102, 255}};
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colors->SetColor("BkgColor", bkg.data());
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// This creates a polygonal cylinder model with eight circumferential facets
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// (i.e, in practice an octagonal prism).
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vtkNew<vtkCylinderSource> cylinder;
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cylinder->SetResolution(8);
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// The mapper is responsible for pushing the geometry into the graphics
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// library. It may also do color mapping, if scalars or other attributes are
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// defined.
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vtkNew<vtkPolyDataMapper> cylinderMapper;
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cylinderMapper->SetInputConnection(cylinder->GetOutputPort());
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// The actor is a grouping mechanism: besides the geometry (mapper), it
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// also has a property, transformation matrix, and/or texture map.
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// Here we set its color and rotate it around the X and Y axes.
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vtkNew<vtkActor> cylinderActor;
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cylinderActor->SetMapper(cylinderMapper);
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cylinderActor->GetProperty()->SetColor(
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colors->GetColor4d("Tomato").GetData());
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cylinderActor->RotateX(30.0);
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cylinderActor->RotateY(-45.0);
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// The renderer generates the image
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// which is then displayed on the render window.
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// It can be thought of as a scene to which the actor is added
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vtkNew<vtkRenderer> renderer;
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renderer->AddActor(cylinderActor);
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renderer->SetBackground(colors->GetColor3d("BkgColor").GetData());
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// Zoom in a little by accessing the camera and invoking its "Zoom" method.
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renderer->ResetCamera();
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renderer->GetActiveCamera()->Zoom(1.5);
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// The render window is the actual GUI window
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// that appears on the computer screen
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vtkNew<vtkRenderWindow> renderWindow;
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renderWindow->SetSize(300, 300);
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renderWindow->AddRenderer(renderer);
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renderWindow->SetWindowName("Cylinder");
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// The render window interactor captures mouse events
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// and will perform appropriate camera or actor manipulation
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// depending on the nature of the events.
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vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
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renderWindowInteractor->SetRenderWindow(renderWindow);
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// This starts the event loop and as a side effect causes an initial render.
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renderWindow->Render();
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renderWindowInteractor->Start();
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return EXIT_SUCCESS;
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}
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