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多渲染窗口的开启(共用一个camera)
二：代码及注释
import vtkmodules.vtkInteractionStyle import vtkmodules.vtkRenderingOpenGL2 from vtkmodules.vtkCommonColor import vtkNamedColors from vtkmodules.vtkInteractionStyle import vtkInteractorStyleTrackballCamera from vtkmodules.vtkFiltersSources import vtkConeSource, vtkCubeSource, vtkCylinderSource, vtkSphereSource from vtkmodules.vtkRenderingCore import ( vtkActor, vtkPolyDataMapper, vtkRenderWindow, vtkRenderWindowInteractor, vtkRenderer ) def get_sources(): sources = list() sphere = vtkSphereSource() sphere.SetCenter(0.0, 0.0, 0.0) sphere.Update() sources.append(sphere) cone = vtkConeSource() cone.SetCenter(0.0, 0.0, 0.0) cone.SetDirection(0, 1, 0) cone.Update() sources.append(cone) cube = vtkCubeSource() cube.SetCenter(0.0, 0.0, 0.0) cube.Update() sources.append(cube) cylinder = vtkCylinderSource() cylinder.SetCenter(0.0, 0.0, 0.0) cylinder.Update() sources.append(cylinder) return sources def main(): simultaneous_update = True # True表示四个窗口一起动 colors = vtkNamedColors() ren_bkg = ['AliceBlue', 'GhostWhite', 'WhiteSmoke', 'Seashell'] actor_color = ['Bisque', 'RosyBrown', 'Goldenrod', 'Chocolate'] width = 300 height = 300 dx = 20 dy = 40 w = width + dx h = height + dy interactors = [] running = [True, True, True, True] camera = None sources = get_sources() kpis = [] for i in range(0, 4): ren_win = vtkRenderWindow() ren_win.SetSize(width, height) renderer = vtkRenderer() if i == 0: camera = renderer.GetActiveCamera() camera.Azimuth(30) camera.Elevation(30) else: renderer.SetActiveCamera(camera) ren_win.AddRenderer(renderer) iren = vtkRenderWindowInteractor() interactors.append(iren) iren.SetRenderWindow(ren_win) ren_win.Render() ren_win.SetWindowName('MultipleRenderWindows {:d}'.format(i)) ren_win.SetPosition((i % 2) * w, h - (i // 2) * h) mapper = vtkPolyDataMapper() mapper.SetInputConnection(sources[i].GetOutputPort()) actor = vtkActor() actor.SetMapper(mapper) actor.GetProperty().SetColor(colors.GetColor3d(actor_color[i])) renderer.AddActor(actor) renderer.SetBackground(colors.GetColor3d(ren_bkg[i])) renderer.ResetCamera() kpis.append(KeyPressInteractorStyle(parent=iren)) interactors[i].SetInteractorStyle(kpis[i]) kpis[i].status = running[i] if simultaneous_update: interactors[0].Initialize() while all(x is True for x in running): # 死循环，一直执行 for i in range(0, 4): running[i] = kpis[i].status if running[i]: interactors[i].ProcessEvents() interactors[i].Render() else: interactors[i].TerminateApp() print('Window', i, 'has stopped running.') else: interactors[0].Start() class KeyPressInteractorStyle(vtkInteractorStyleTrackballCamera): def __init__(self, parent=None, status=True): self.parent = vtkRenderWindowInteractor() self.status = status if parent is not None: self.parent = parent self.AddObserver('KeyPressEvent', self.key_press_event) def key_press_event(self, obj, event): key = self.parent.GetKeySym().lower() if key == 'e' or key == 'q': self.status = False return if __name__ == '__main__': main()
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