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搞笑幽默网站源码最新,做我的世界缩略图的网站,灌南住房和城乡建设局网站,网站开发能用到的ps知识一#xff1a;主要的知识点 1、说明 本文只是教程内容的一小段#xff0c;因博客字数限制#xff0c;故进行拆分。主教程链接#xff1a;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①vtkImplicitPolyDataDistance计算任意点到…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①vtkImplicitPolyDataDistance计算任意点到几何体表面的符号距离二代码及注释import numpy as np import vtkmodules.vtkRenderingOpenGL2 import vtkmodules.vtkInteractionStyle from vtkmodules.vtkCommonColor import vtkNamedColors from vtkmodules.vtkCommonCore import vtkFloatArray, vtkPoints from vtkmodules.vtkFiltersSources import vtkSphereSource from vtkmodules.vtkFiltersCore import vtkImplicitPolyDataDistance from vtkmodules.vtkCommonDataModel import vtkPolyData from vtkmodules.vtkFiltersGeneral import vtkVertexGlyphFilter from vtkmodules.vtkRenderingCore import ( vtkActor, vtkPolyDataMapper, vtkRenderWindow, vtkRenderWindowInteractor, vtkRenderer ) def main(): colors vtkNamedColors() sphereSource vtkSphereSource() sphereSource.SetCenter(0, 0, 0) sphereSource.SetRadius(1.0) sphereSource.Update() sphereMapper vtkPolyDataMapper() sphereMapper.SetInputConnection(sphereSource.GetOutputPort()) sphereMapper.ScalarVisibilityOff() sphereActor vtkActor() sphereActor.SetMapper(sphereMapper) # SetOpacity 设置模型是否透明1完全不透明0完全透明 sphereActor.GetProperty().SetOpacity(0.3) sphereActor.GetProperty().SetColor(1, 0, 0) vtkImplicitPolyDataDistance 计算空间中任意一点到这个多边形几何体表面的符号距离 implicitPolyDataDistance vtkImplicitPolyDataDistance() implicitPolyDataDistance.SetInput(sphereSource.GetOutput()) # 设置隐式距离函数 points vtkPoints() step 0.1 for x in np.arange(-2, 2, step): for y in np.arange(-2, 2, step): for z in np.arange(-2, 2, step): points.InsertNextPoint(x, y, z) signedDistance vtkFloatArray() signedDistance.SetNumberOfComponents(1) signedDistance.SetName() for pointId in range(points.GetNumberOfPoints()): p points.GetPoint(pointId) dist_ implicitPolyDataDistance.EvaluateFunction(p) signedDistance.InsertNextValue(dist_) polyData vtkPolyData() polyData.SetPoints(points) polyData.GetPointData().SetScalars(signedDistance) vtkVertexGlyphFilter 把点集转换成可渲染的几何体 vertexGlyphFilter vtkVertexGlyphFilter() vertexGlyphFilter.SetInputData(polyData) vertexGlyphFilter.Update() signedDistanceMapper vtkPolyDataMapper() signedDistanceMapper.SetInputConnection(vertexGlyphFilter.GetOutputPort()) signedDistanceMapper.ScalarVisibilityOn() # 根据标量进行着色 signedDistanceActor vtkActor() signedDistanceActor.SetMapper(signedDistanceMapper) renderer vtkRenderer() renderer.AddViewProp(sphereActor) renderer.AddViewProp(signedDistanceActor) renderer.SetBackground(colors.GetColor3d(SlateGray)) renderWindow vtkRenderWindow() renderWindow.AddRenderer(renderer) renderWindow.SetWindowName(ImplicitPolyDataDistance) renWinInteractor vtkRenderWindowInteractor() renWinInteractor.SetRenderWindow(renderWindow) renderWindow.Render() renWinInteractor.Start() if __name__ __main__: main()