TriangleStrip连续三角带

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连续三角带

二：代码及注释

import vtkmodules.vtkRenderingOpenGL2
from vtkmodules.vtkCommonCore import vtkPoints
from vtkmodules.vtkCommonColor import vtkNamedColors
from vtkmodules.vtkCommonDataModel import vtkCellArray, vtkPolyData, vtkTriangleStrip
from vtkmodules.vtkRenderingCore import vtkActor, vtkRenderer, vtkDataSetMapper, vtkRenderWindow, \
    vtkRenderWindowInteractor


def main():
    colors = vtkNamedColors()

    points = vtkPoints()
    points.InsertNextPoint(0, 0, 0)
    points.InsertNextPoint(0, 1, 0)
    points.InsertNextPoint(1, 0, 0)
    points.InsertNextPoint(1.5, 1, 0)

    triangleStrip = vtkTriangleStrip()
    triangleStrip.GetPointIds().SetNumberOfIds(4)
    for i in range(0, 4):
        triangleStrip.GetPointIds().SetId(i, i)
    """
    另外一种写法
    不需要SetNumberOfIds
    for i in range(0, 4):
        triangleStrip.GetPointIds().InsertNextId(i)
    """


    cells = vtkCellArray()
    cells.InsertNextCell(triangleStrip)

    polydata = vtkPolyData()
    polydata.SetPoints(points)
    polydata.SetStrips(cells)

    # Create an actor and mapper
    mapper = vtkDataSetMapper()
    mapper.SetInputData(polydata)
    actor = vtkActor()
    actor.SetMapper(mapper)
    actor.GetProperty().SetColor(colors.GetColor3d('PeachPuff'))
    actor.GetProperty().SetRepresentationToWireframe()

    # Create a renderer, render window, and interactor
    renderer = vtkRenderer()
    renderWindow = vtkRenderWindow()
    renderWindow.SetWindowName('TriangleStrip')
    renderWindow.AddRenderer(renderer)
    renderWindowInteractor = vtkRenderWindowInteractor()
    renderWindowInteractor.SetRenderWindow(renderWindow)

    renderer.AddActor(actor)
    renderer.SetBackground(colors.GetColor3d('DarkGreen'))
    renderWindow.Render()
    renderWindowInteractor.Start()


if __name__ == '__main__':
    main()