vtk-u3dexporter is a VTK module for exporting a VTK 3D scene to the U3D file format, which can be embedded into PDF files.
It is available as both C++ class and a Python package.
You can install vtk-u3dexporter via pip:
pip install vtk-u3dexporterHere is a brief example of how to use vtk-u3dexporter to export a simple cube scene:
import os
import vtk
from vtk import vtkU3DExporter
# Define the cube source
cube = vtk.vtkCubeSource()
# Define the cube mapper
cubeMapper = vtk.vtkPolyDataMapper()
cubeMapper.SetInputConnection(cube.GetOutputPort())
# Define the cube actor
cubeActor = vtk.vtkActor()
cubeActor.SetMapper(cubeMapper)
# Define the render window and renderer
renderWindow = vtk.vtkRenderWindow()
renderWindow.OffScreenRenderingOn()
renderer = vtk.vtkRenderer()
renderWindow.AddRenderer(renderer)
# Add the cube to the renderer
renderer.AddActor(cubeActor)
# Automatically reset the camera
renderer.ResetCamera()
# Define the output file name, which will have the ".u3d" extension appended automatically
filePath = "cube"
# Export to U3D
u3dExporter = vtkU3DExporter.vtkU3DExporter()
u3dExporter.SetFileName(filePath)
u3dExporter.SetInput(renderWindow)
u3dExporter.Write()
# Check that the file exists
assert os.path.exists(f"{filePath}.u3d")In this example, we create a simple cube scene using VTK, add it to a renderer, and then export it to U3D format using vtk-u3dexporter. We then verify that the output file exists.
vtk-u3dexporter is distributed under the Apache License 2.0. Please see the LICENSE file for details.