CombinePolyData

Description¶

This example reads two .vtp files (or produces them if not specified as command line arguments), combines them, and displays the result to the screen.

Other languages

See (Cxx)

Question

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Code¶

CombinePolyData.py

#!/usr/bin/env python

# noinspection PyUnresolvedReferences
import vtkmodules.vtkInteractionStyle
# noinspection PyUnresolvedReferences
import vtkmodules.vtkRenderingOpenGL2
from vtkmodules.vtkCommonColor import vtkNamedColors
from vtkmodules.vtkCommonDataModel import vtkPolyData
from vtkmodules.vtkFiltersCore import (
    vtkAppendPolyData,
    vtkCleanPolyData
)
from vtkmodules.vtkFiltersSources import (
    vtkConeSource,
    vtkSphereSource
)
from vtkmodules.vtkRenderingCore import (
    vtkActor,
    vtkPolyDataMapper,
    vtkRenderWindow,
    vtkRenderWindowInteractor,
    vtkRenderer
)


def main():
    colors = vtkNamedColors()

    # Set the background color.
    colors.SetColor('BkgColor', [0.3, 0.2, 0.1, 1.0])

    input1 = vtkPolyData()
    input2 = vtkPolyData()

    sphereSource = vtkSphereSource()
    sphereSource.SetCenter(5, 0, 0)
    sphereSource.Update()

    input1.ShallowCopy(sphereSource.GetOutput())

    coneSource = vtkConeSource()
    coneSource.Update()

    input2.ShallowCopy(coneSource.GetOutput())

    # Append the two meshes
    appendFilter = vtkAppendPolyData()
    appendFilter.AddInputData(input1)
    appendFilter.AddInputData(input2)

    appendFilter.Update()

    #  Remove any duplicate points.
    cleanFilter = vtkCleanPolyData()
    cleanFilter.SetInputConnection(appendFilter.GetOutputPort())
    cleanFilter.Update()

    # Create a mapper and actor
    mapper = vtkPolyDataMapper()
    mapper.SetInputConnection(cleanFilter.GetOutputPort())

    actor = vtkActor()
    actor.SetMapper(mapper)

    # Create a renderer, render window, and interactor
    renderer = vtkRenderer()
    renderWindow = vtkRenderWindow()
    renderWindow.AddRenderer(renderer)
    renderWindowInteractor = vtkRenderWindowInteractor()
    renderWindowInteractor.SetRenderWindow(renderWindow)

    # Add the actors to the scene
    renderer.AddActor(actor)

    # Render and interact
    renderWindowInteractor.Initialize()
    renderWindow.Render()
    renderWindow.SetWindowName('CombinePolyData')
    renderer.SetBackground(colors.GetColor3d('deep_ochre'))
    renderer.GetActiveCamera().Zoom(0.9)
    renderWindow.Render()
    renderWindowInteractor.Start()


if __name__ == '__main__':
    main()