RotationAroundLine 模型的旋转

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模型的旋转

二：代码及注释

python 复制代码

import vtkmodules.vtkRenderingOpenGL2
import vtkmodules.vtkInteractionStyle
from vtkmodules.vtkFiltersSources import vtkArrowSource
from vtkmodules.vtkCommonColor import vtkNamedColors
from vtkmodules.vtkCommonTransforms import vtkTransform
from vtkmodules.vtkFiltersGeneral import vtkTransformPolyDataFilter
from vtkmodules.vtkRenderingCore import vtkActor, vtkPolyDataMapper, vtkRenderWindow, vtkRenderWindowInteractor, \
    vtkRenderer


def main():
    colors = vtkNamedColors()

    source = vtkArrowSource() # 原始方向(0,0,1)

    transform = vtkTransform()
    """
    RotateWXYZ  可自行定义所绕的轴以及绕的角度
    """
    transform.RotateWXYZ(45, 0, 0, 1)

    transformFilter = vtkTransformPolyDataFilter()
    transformFilter.SetInputConnection(source.GetOutputPort())
    transformFilter.SetTransform(transform)
    transformFilter.Update() # 旋转之后与X轴的夹角呈45°

    coneMapper1 = vtkPolyDataMapper()
    coneMapper1.SetInputConnection(source.GetOutputPort())

    actor1 = vtkActor()
    actor1.SetMapper(coneMapper1)

    coneMapper2 = vtkPolyDataMapper()
    coneMapper2.SetInputConnection(transformFilter.GetOutputPort())

    actor2 = vtkActor()
    actor2.SetMapper(coneMapper2)

    actor1.GetProperty().SetColor(colors.GetColor3d("LightCoral"))
    actor2.GetProperty().SetColor(colors.GetColor3d("PaleTurquoise"))

    render = vtkRenderer()
    render.AddActor(actor1)
    render.AddActor(actor2)
    render.SetBackground(colors.GetColor3d("SlateGray"))

    renWin = vtkRenderWindow()
    renWin.AddRenderer(render)
    renWin.SetSize(600, 480)
    renWin.SetWindowName("RotationAroundLine")

    iren = vtkRenderWindowInteractor()
    iren.SetRenderWindow(renWin)

    iren.Initialize()
    renWin.Render()
    iren.Start()



if __name__ == '__main__':
    main()