如何在同一渲染风中渲染2.vtp切片

Question

我必须以.vtp格式（也是在vtm中）创建一些切片，我希望这些切片能够一起可视化，以便在以后处理它们

我已经设置了读卡器、贴图器、角色、渲染窗口和摄影机坐标，但在渲染图像时，它只提供第一个切片（切片10），而不提供第二个切片（切片11）

import vtk

colors = vtk.vtkNamedColors()
Slice10 = 'Slice10_0_0.vtp'
reader1 = vtk.vtkXMLPolyDataReader()
reader1.SetFileName(Slice10)

Slice11 = 'Slice11_0_0.vtp'
reader2 = vtk.vtkXMLPolyDataReader()
reader2.SetFileName(Slice11)

# mapper
mapper1 = vtk.vtkPolyDataMapper()
mapper1.SetInputConnection(reader1.GetOutputPort())

mapper2 = vtk.vtkPolyDataMapper()
mapper2.SetInputConnection(reader2.GetOutputPort())

# actors
actor1 = vtk.vtkActor() 
actor1.SetMapper(mapper1)

actor2 = vtk.vtkActor()
actor2.SetMapper(mapper1)

'''RENDER'''
renderer = vtk.vtkRenderer()
# Background
renderer.SetBackground(1., 1., 1.)
# Add actor to the scene
renderer.AddActor(actor1)
renderer.AddActor(actor2)

'''Render window'''
renderWindow = vtk.vtkRenderWindow()
renderWindow.AddRenderer(renderer)

'''Interactor'''
renderWindowInteractor = vtk.vtkRenderWindowInteractor()
renderWindowInteractor.SetInteractorStyle(vtk.vtkInteractorStyleTrackballCamera())
renderWindowInteractor.SetRenderWindow(renderWindow)

'''Add camera coordinates'''
axes = vtk.vtkAxesActor()
widget = vtk.vtkOrientationMarkerWidget()
widget.SetOutlineColor(0.9300, 0.5700, 0.1300)
widget.SetOrientationMarker(axes)
widget.SetInteractor(renderWindowInteractor)
widget.SetViewport(0.0, 0.0, 0.4, 0.4)
widget.SetEnabled(1)
widget.InteractiveOn()

# Reset camera
renderer.ResetCamera()

'''Begin interaction'''
renderWindow.Render()
renderWindowInteractor.Initialize()
renderWindowInteractor.Start()
renderWindowInteractor.Start()

我希望两个切片在同一个渲染窗口中，一个在另一个上，可能有一定的距离，但中心相同，以便将它们保存在一起作为一个唯一的图像并进行处理

Answer 1

您的代码基本上是正确的，只是为两个不同的角色设置了相同的映射器，因此实际上显示了两次相同的几何体（第19行到第24行）。更改：

# actors
actor1 = vtk.vtkActor() 
actor1.SetMapper(mapper1)

actor2 = vtk.vtkActor()
actor2.SetMapper(mapper1)

致：

# actors
actor1 = vtk.vtkActor() 
actor1.SetMapper(mapper1)

actor2 = vtk.vtkActor()
actor2.SetMapper(mapper2)

它会起作用的