VTK中包含可以执行布尔操作的接口有vtkImplicitBoolean，vtkBooleanOperationPolyDataFilter，vtkLoopBooleanPolyDataFilter。

布尔操作包括：布尔加，布尔减和布尔交。

 

 

 

code:

#!/usr/bin/env python"""
This example demonstrates how to use boolean combinations of implicitfunctions to create a model of an ice cream cone."""
# noinspection PyUnresolvedReferences
import vtkmodules.vtkInteractionStyle
# noinspection PyUnresolvedReferences
import vtkmodules.vtkRenderingOpenGL2
from vtkmodules.vtkCommonColor import vtkNamedColors
from vtkmodules.vtkCommonDataModel import (vtkCone,vtkImplicitBoolean,vtkPlane,vtkSphere
)
from vtkmodules.vtkFiltersCore import vtkContourFilter
from vtkmodules.vtkImagingHybrid import vtkSampleFunction
from vtkmodules.vtkRenderingCore import (vtkActor,vtkPolyDataMapper,vtkRenderWindow,vtkRenderWindowInteractor,vtkRenderer
)def main():colors = vtkNamedColors()# Create implicit function primitives. These have been carefully placed to# give the effect that we want. We are going to use various combinations of# these functions to create the shape we want for example, we use planes# intersected with a cone (which is infinite in extent) to get a finite# cone.#cone = vtkCone()cone.SetAngle(20)vertPlane = vtkPlane()vertPlane.SetOrigin(.1, 0, 0)vertPlane.SetNormal(-1, 0, 0)basePlane = vtkPlane()basePlane.SetOrigin(1.2, 0, 0)basePlane.SetNormal(1, 0, 0)iceCream = vtkSphere()iceCream.SetCenter(1.333, 0, 0)iceCream.SetRadius(0.5)bite = vtkSphere()bite.SetCenter(1.5, 0, 0.5)bite.SetRadius(0.25)# Combine primitives to build ice-cream cone. Clip the cone with planes.theCone = vtkImplicitBoolean()theCone.SetOperationTypeToIntersection()theCone.AddFunction(cone)theCone.AddFunction(vertPlane)theCone.AddFunction(basePlane)# Take a bite out of the ice cream.theCream = vtkImplicitBoolean()theCream.SetOperationTypeToDifference()theCream.AddFunction(iceCream)theCream.AddFunction(bite)# The sample function generates a distance function from the# implicit function (which in this case is the cone). This is# then contoured to get a polygonal surface.#theConeSample = vtkSampleFunction()theConeSample.SetImplicitFunction(theCone)theConeSample.SetModelBounds(-1, 1.5, -1.25, 1.25, -1.25, 1.25)theConeSample.SetSampleDimensions(128, 128, 128)theConeSample.ComputeNormalsOff()theConeSurface = vtkContourFilter()theConeSurface.SetInputConnection(theConeSample.GetOutputPort())theConeSurface.SetValue(0, 0.0)coneMapper = vtkPolyDataMapper()coneMapper.SetInputConnection(theConeSurface.GetOutputPort())coneMapper.ScalarVisibilityOff()coneActor = vtkActor()coneActor.SetMapper(coneMapper)coneActor.GetProperty().SetColor(colors.GetColor3d('Chocolate'))# The same here for the ice cream.#theCreamSample = vtkSampleFunction()theCreamSample.SetImplicitFunction(theCream)theCreamSample.SetModelBounds(0, 2.5, -1.25, 1.25, -1.25, 1.25)theCreamSample.SetSampleDimensions(128, 128, 128)theCreamSample.ComputeNormalsOff()theCreamSurface = vtkContourFilter()theCreamSurface.SetInputConnection(theCreamSample.GetOutputPort())theCreamSurface.SetValue(0, 0.0)creamMapper = vtkPolyDataMapper()creamMapper.SetInputConnection(theCreamSurface.GetOutputPort())creamMapper.ScalarVisibilityOff()creamActor = vtkActor()creamActor.SetMapper(creamMapper)creamActor.GetProperty().SetDiffuseColor(colors.GetColor3d('Mint'))creamActor.GetProperty().SetSpecular(.6)creamActor.GetProperty().SetSpecularPower(50)# Create the usual rendering stuff.#ren1 = vtkRenderer()renWin = vtkRenderWindow()renWin.AddRenderer(ren1)iren = vtkRenderWindowInteractor()iren.SetRenderWindow(renWin)# Add the actors to the renderer, set the background and size.#ren1.AddActor(coneActor)ren1.AddActor(creamActor)ren1.SetBackground(colors.GetColor3d('SlateGray'))renWin.SetSize(640, 480)renWin.SetWindowName('IceCream')ren1.ResetCamera()ren1.GetActiveCamera().Roll(90)ren1.GetActiveCamera().Dolly(1.25)ren1.ResetCameraClippingRange()iren.Initialize()# render the image#renWin.Render()iren.Start()if __name__ == '__main__':main()