PolarAxesActor
Repository source: PolarAxesActor
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See (PythonicAPI)
Question
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Code¶
PolarAxesActor.cxx
#include <vtkActor.h>
#include <vtkCamera.h>
#include <vtkCameraOrientationWidget.h>
#include <vtkInteractorStyleSwitch.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkParametricEnneper.h>
#include <vtkParametricFunctionSource.h>
#include <vtkPolarAxesActor.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkProperty2D.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <cmath>
#include <numeric>
#include <vector>
int main(int, char*[])
{
vtkNew<vtkNamedColors> colors;
// The source will be a parametric function.
vtkNew<vtkParametricEnneper> src;
vtkNew<vtkParametricFunctionSource> fnSrc;
fnSrc->SetParametricFunction(src);
fnSrc->Update();
// Create a mapper and actor.
vtkNew<vtkPolyDataMapper> mapper;
mapper->SetInputConnection(fnSrc->GetOutputPort());
vtkNew<vtkActor> actor;
actor->SetMapper(mapper);
actor->GetProperty()->SetColor(
colors->GetColor3d("CornflowerBlue").GetData());
// Create a renderer, render window, and interactor.
vtkNew<vtkRenderer> renderer;
vtkNew<vtkRenderWindow> renderWindow;
renderWindow->AddRenderer(renderer);
renderWindow->SetWindowName("PolarAxesActor");
renderWindow->SetSize(600, 600);
vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
renderWindowInteractor->SetRenderWindow(renderWindow);
auto is = vtkInteractorStyleSwitch::SafeDownCast(
renderWindowInteractor->GetInteractorStyle());
if (is)
{
is->SetCurrentStyleToTrackballCamera();
}
double* bounds;
bounds = fnSrc->GetOutput()->GetBounds();
std::vector<double> p1{bounds[0], bounds[2]};
std::vector<double> p2{bounds[1], bounds[3]};
auto radius =
std::inner_product(std::cbegin(p1), std::cend(p1), std::begin(p2), 0.0);
radius = std::sqrt(std::abs(radius));
std::vector<double> pole{0.0, 0.0, bounds[5]};
vtkNew<vtkPolarAxesActor> polarAxesActor;
polarAxesActor->SetPole(pole.data());
polarAxesActor->SetMaximumRadius(radius);
polarAxesActor->SetRequestedNumberOfPolarAxes(5);
polarAxesActor->SetMinimumAngle(-45.0);
polarAxesActor->SetMaximumAngle(135.0);
auto axesProp = polarAxesActor->GetPolarAxisProperty();
axesProp->SetColor(colors->GetColor3d("Red").GetData());
auto arcsProp = polarAxesActor->GetPolarArcsProperty();
arcsProp->SetColor(colors->GetColor3d("Yellow").GetData());
arcsProp->SetLineWidth(1.0);
polarAxesActor->SetSecondaryRadialAxesProperty(axesProp);
polarAxesActor->SetLastRadialAxisProperty(axesProp);
polarAxesActor->SetSecondaryPolarArcsProperty(arcsProp);
// Add the actor to the scene.
renderer->AddActor(actor);
renderer->AddActor(polarAxesActor);
renderer->GetActiveCamera()->ParallelProjectionOn();
polarAxesActor->SetCamera(renderer->GetActiveCamera());
renderer->ResetCamera();
vtkNew<vtkCameraOrientationWidget> cow;
cow->SetParentRenderer(renderer);
// Enable the widget.
cow->On();
renderer->SetBackground(colors->GetColor3d("MidnightBlue").GetData());
// Render and interact.
renderWindow->Render();
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.12 FATAL_ERROR)
project(PolarAxesActor)
find_package(VTK COMPONENTS
CommonColor
CommonComputationalGeometry
CommonCore
FiltersSources
InteractionStyle
InteractionWidgets
RenderingAnnotation
RenderingContextOpenGL2
RenderingCore
RenderingFreeType
RenderingGL2PSOpenGL2
RenderingOpenGL2
)
if (NOT VTK_FOUND)
message(FATAL_ERROR "PolarAxesActor: Unable to find the VTK build folder.")
endif()
# Prevent a "command line is too long" failure in Windows.
set(CMAKE_NINJA_FORCE_RESPONSE_FILE "ON" CACHE BOOL "Force Ninja to use response files.")
add_executable(PolarAxesActor MACOSX_BUNDLE PolarAxesActor.cxx )
target_link_libraries(PolarAxesActor PRIVATE ${VTK_LIBRARIES}
)
# vtk_module_autoinit is needed
vtk_module_autoinit(
TARGETS PolarAxesActor
MODULES ${VTK_LIBRARIES}
)
Download and Build PolarAxesActor¶
Click here to download PolarAxesActor and its CMakeLists.txt file. Once the tarball PolarAxesActor.tar has been downloaded and extracted,
cd PolarAxesActor/build
If VTK is installed:
cmake ..
If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..
Build the project:
make
and run it:
./PolarAxesActor
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.