如何在同一渲染器中渲染 2 个 .vtp 切片 Window

Question

我需要一些 .vtp 格式的切片（也是 vtm），我想将它们一起可视化以便之后处理它们。

我已经设置了读取器、映射器、演员、渲染器 window 和相机坐标，但是当图像被渲染时，它只给我第一个切片 (Slice10) 而不是第二个 (Slice11)

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()

我希望在同一个渲染中有两个切片 window 一个在另一个之上可能有一些距离但中心相同，以便将它们一起保存为一个独特的图像并对其进行处理

Answer 1

您的代码大部分是正确的，只是您为两个不同的演员设置了相同的映射器，所以实际上您显示了两次相同的几何图形（第 19 到 24 行）。变化：

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

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

至：

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

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

它会起作用。

如何在同一渲染器中渲染 2 个 .vtp 切片 Window

How to render 2 .vtp slices in the same render Window

python

rendering

vtk

actor