Glyph3DMapper
Repository source: Glyph3DMapper
Question
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Code¶
Glyph3DMapper.cxx
#include <vtkActor.h>
#include <vtkCamera.h>
#include <vtkCubeSource.h>
#include <vtkFloatArray.h>
#include <vtkGlyph3DMapper.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkPointData.h>
#include <vtkPoints.h>
#include <vtkPolyData.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkUnsignedCharArray.h>
int main(int, char*[])
{
vtkNew<vtkPoints> points;
points->InsertNextPoint(0, 0, 0);
points->InsertNextPoint(1, 1, 1);
points->InsertNextPoint(2, 2, 2);
vtkNew<vtkFloatArray> scaleFactors;
scaleFactors->SetNumberOfComponents(3);
scaleFactors->SetName("Scale Factors");
scaleFactors->InsertNextTuple3(0.7, 1.0, 1.0);
scaleFactors->InsertNextTuple3(1.0, 0.7, 1.0);
scaleFactors->InsertNextTuple3(1.0, 1.0, 0.7);
vtkNew<vtkNamedColors> namedColors;
vtkNew<vtkUnsignedCharArray> colors;
colors->SetName("Colors");
colors->SetNumberOfComponents(3);
colors->InsertNextTypedTuple(namedColors->GetColor3ub("Red").GetData());
colors->InsertNextTypedTuple(namedColors->GetColor3ub("Green").GetData());
colors->InsertNextTypedTuple(namedColors->GetColor3ub("Blue").GetData());
vtkNew<vtkPolyData> polydata;
polydata->SetPoints(points);
polydata->GetPointData()->AddArray(colors);
polydata->GetPointData()->AddArray(scaleFactors);
// Create anything you want here, we will use a cube for the demo.
vtkNew<vtkCubeSource> cubeSource;
vtkNew<vtkGlyph3DMapper> glyph3Dmapper;
glyph3Dmapper->SetSourceConnection(cubeSource->GetOutputPort());
glyph3Dmapper->SetInputData(polydata);
glyph3Dmapper->SetScalarModeToUsePointFieldData();
glyph3Dmapper->SetScaleArray("Scale Factors");
glyph3Dmapper->SetScaleModeToScaleByVectorComponents();
glyph3Dmapper->SelectColorArray("Colors");
glyph3Dmapper->Update();
vtkNew<vtkActor> actor;
actor->SetMapper(glyph3Dmapper);
// Create a renderer, render window, and interactor.
vtkNew<vtkRenderer> renderer;
vtkNew<vtkRenderWindow> renderWindow;
renderWindow->AddRenderer(renderer);
renderWindow->SetWindowName("Glyph3DMapper");
vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
renderWindowInteractor->SetRenderWindow(renderWindow);
// Add the actor to the scene.
renderer->AddActor(actor);
renderer->SetBackground(namedColors->GetColor3d("SlateGray").GetData());
// Position the camera.
renderer->GetActiveCamera()->SetPosition(-10, 5, 0);
renderer->GetActiveCamera()->SetFocalPoint(1, 1, 1);
// Render and interact.
renderWindow->Render();
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.12 FATAL_ERROR)
project(Glyph3DMapper)
find_package(VTK COMPONENTS
CommonColor
CommonCore
CommonDataModel
FiltersSources
InteractionStyle
RenderingContextOpenGL2
RenderingCore
RenderingFreeType
RenderingGL2PSOpenGL2
RenderingOpenGL2
)
if (NOT VTK_FOUND)
message(FATAL_ERROR "Glyph3DMapper: 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(Glyph3DMapper MACOSX_BUNDLE Glyph3DMapper.cxx )
target_link_libraries(Glyph3DMapper PRIVATE ${VTK_LIBRARIES}
)
# vtk_module_autoinit is needed
vtk_module_autoinit(
TARGETS Glyph3DMapper
MODULES ${VTK_LIBRARIES}
)
Download and Build Glyph3DMapper¶
Click here to download Glyph3DMapper and its CMakeLists.txt file. Once the tarball Glyph3DMapper.tar has been downloaded and extracted,
cd Glyph3DMapper/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:
./Glyph3DMapper
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.