一：主要的知识点
1、说明
本文只是教程内容的一小段，因博客字数限制，故进行拆分。主教程链接：vtk教程——逐行解析官网所有Python示例-CSDN博客
2、知识点纪要
本段代码主要涉及的有①切割模型并用颜色填充横截面
二：代码及注释
import vtkmodules.vtkRenderingOpenGL2 from vtkmodules.vtkCommonColor import vtkNamedColors from vtkmodules.vtkCommonDataModel import vtkPlane, vtkPolyData from vtkmodules.vtkFiltersSources import vtkSphereSource from vtkmodules.vtkFiltersCore import vtkCutter, vtkFeatureEdges, vtkStripper from vtkmodules.vtkRenderingCore import ( vtkActor, vtkPolyDataMapper, vtkProperty, vtkRenderWindow, vtkRenderWindowInteractor, vtkRenderer ) def main(): colors = vtkNamedColors() sphere = vtkSphereSource() sphere.SetRadius(50) sphere.SetThetaResolution(100) sphere.SetPhiResolution(100) # cubeMapper = vtkPolyDataMapper() # cubeMapper.SetInputConnection(cube.GetOutputPort()) plane = vtkPlane() plane.SetOrigin(20, 0, 0) plane.SetNormal(1, 0, 0) cutter = vtkCutter() cutter.SetCutFunction(plane) cutter.SetInputConnection(sphere.GetOutputPort()) cutter.Update() # FeatureEdges = vtkFeatureEdges() # FeatureEdges.SetInputConnection(cutter.GetOutputPort()) # FeatureEdges.BoundaryEdgesOn() # FeatureEdges.FeatureEdgesOff() # FeatureEdges.ManifoldEdgesOff() # FeatureEdges.NonManifoldEdgesOff() # FeatureEdges.Update() cutStrips = vtkStripper() cutStrips.SetInputConnection(cutter.GetOutputPort()) cutStrips.Update() cutPoly = vtkPolyData() cutPoly.SetPoints(cutStrips.GetOutput().GetPoints()) cutPoly.SetPolys(cutStrips.GetOutput().GetLines()) cutMapper = vtkPolyDataMapper() cutMapper.SetInputData(cutPoly) backface = vtkProperty() backface.SetColor(colors.GetColor3d('Gold')) cutActor = vtkActor() cutActor.SetMapper(cutMapper) cutActor.GetProperty().SetColor(colors.GetColor3d('Yellow')) cutActor.GetProperty().SetEdgeColor(colors.GetColor3d('Red')) cutActor.GetProperty().SetLineWidth(2) cutActor.GetProperty().EdgeVisibilityOn() # cutActor.GetProperty().SetOpacity(0.7) cutActor.SetBackfaceProperty(backface) ren = vtkRenderer() ren.AddActor(cutActor) # Add renderer to renderwindow and render renWin = vtkRenderWindow() renWin.AddRenderer(ren) renWin.SetSize(600, 400) renWin.SetWindowName('FilledPolygon') iren = vtkRenderWindowInteractor() iren.SetRenderWindow(renWin) ren.SetBackground(colors.GetColor3d('DarkSlateGray')) ren.GetActiveCamera().SetPosition(223, -122, -91) renWin.Render() camera = ren.GetActiveCamera() camera.SetPosition(151.519511, 12.795117, -223.586044) camera.SetFocalPoint(12.518283, 1.963242, 7.618042) camera.SetViewUp(0.740690, -0.523767, 0.420769) camera.SetDistance(269.988889) camera.SetClippingRange(175.347580, 366.490816) camera.Zoom(1.5) iren.Start() if __name__ == '__main__': main()
