CubeAxesActor 为几何体添加边框和坐标轴

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①vtkCubeAxesActor立方体坐标轴

二：代码及注释

import vtkmodules.vtkRenderingOpenGL2 import vtkmodules.vtkInteractionStyle from vtkmodules.vtkFiltersSources import vtkSuperquadricSource from vtkmodules.vtkRenderingAnnotation import vtkCubeAxesActor from vtkmodules.vtkCommonColor import vtkNamedColors from vtkmodules.vtkRenderingCore import ( vtkActor, vtkPolyDataMapper, vtkRenderWindow, vtkRenderWindowInteractor, vtkRenderer ) def main(): colors = vtkNamedColors() backgroundColor = colors.GetColor3d("DarkSlateGray") actorColor = colors.GetColor3d("Tomato") axis1Color = colors.GetColor3d("Salmon") axis2Color = colors.GetColor3d("PaleGreen") axis3Color = colors.GetColor3d("LightSkyBlue") superquadricSource = vtkSuperquadricSource() superquadricSource.SetPhiRoundness(3.1) superquadricSource.SetThetaRoundness(1.0) superquadricSource.Update() # needed to GetBounds later renderer = vtkRenderer() mapper = vtkPolyDataMapper() mapper.SetInputConnection(superquadricSource.GetOutputPort()) superquadricActor = vtkActor() superquadricActor.SetMapper(mapper) superquadricActor.GetProperty().SetDiffuseColor(actorColor) superquadricActor.GetProperty().SetDiffuse(.7) superquadricActor.GetProperty().SetSpecular(.7) superquadricActor.GetProperty().SetSpecularPower(50.0) """ vtkCubeAxesActor 在三维场景中绘制立方体坐标轴（带刻度、标签、标题），帮助用户理解模型的空间范围和方向 """ cubeAxesActor = vtkCubeAxesActor() cubeAxesActor.SetUseTextActor3D(1) # 使用3D文本，确保刻度标签使用3D文本 Actor 渲染，以便它们在3D空间中正确旋转和缩放 cubeAxesActor.SetBounds(superquadricSource.GetOutput().GetBounds()) cubeAxesActor.SetCamera(renderer.GetActiveCamera()) # 确保坐标轴始终围绕相机进行调整，即使相机移动，轴线框看起来仍然像是正确的3D边界 cubeAxesActor.GetTitleTextProperty(0).SetColor(axis1Color) cubeAxesActor.GetTitleTextProperty(0).SetFontSize(18) cubeAxesActor.GetLabelTextProperty(0).SetColor(axis1Color) cubeAxesActor.DrawXGridlinesOn() # 刻画刻度线 cubeAxesActor.XAxisMinorTickVisibilityOff() # 禁用X坐标轴上的次要刻度线的显示 cubeAxesActor.GetTitleTextProperty(1).SetColor(axis2Color) cubeAxesActor.GetTitleTextProperty(1).SetFontSize(18) cubeAxesActor.GetLabelTextProperty(1).SetColor(axis2Color) cubeAxesActor.DrawYGridlinesOn() cubeAxesActor.YAxisMinorTickVisibilityOff() cubeAxesActor.GetTitleTextProperty(2).SetColor(axis3Color) cubeAxesActor.GetTitleTextProperty(2).SetFontSize(18) cubeAxesActor.GetLabelTextProperty(2).SetColor(axis3Color) cubeAxesActor.DrawZGridlinesOn() cubeAxesActor.ZAxisMinorTickVisibilityOff() cubeAxesActor.SetGridLineLocation(cubeAxesActor.VTK_GRID_LINES_FURTHEST) # 设置网格线位置，这里是设置网格线位于立方体轴线框最远端 cubeAxesActor.SetFlyModeToStaticEdges() # 稳定边缘，确保坐标轴标签和刻度保持稳定，即使相机移动，轴线也不会“乱飞”或突然切换位置 renderer.AddActor(cubeAxesActor) renderer.AddActor(superquadricActor) renderer.GetActiveCamera().Azimuth(30) renderer.GetActiveCamera().Elevation(30) renderer.ResetCamera() renderer.SetBackground(backgroundColor) renderWindow = vtkRenderWindow() renderWindow.AddRenderer(renderer) renderWindow.SetSize(640, 480) renderWindow.SetWindowName('CubeAxesActor') renderWindowInteractor = vtkRenderWindowInteractor() renderWindowInteractor.SetRenderWindow(renderWindow) renderWindow.Render() renderer.GetActiveCamera().Zoom(0.8) renderWindowInteractor.Start() if __name__ == '__main__': main()