-----更新和解决方案--------
除非
在renderwindow.Render()
被称为
更新数据()
行为仍然不稳定。 因此renderwindow也需要更新。在
我正在尝试在vtk中可视化非常大的图像。为此,我将它们细分为瓷砖,现在我试着浏览它们,调整相机。在
目前,我已经把WASD键分配给了上下左右移动的功能。 每当我在数据集中上下移动时,视图都会毫无问题地更新,但是每当我左右移动时,图像就不会移动。如果我再上下移动图像就会跳到正确的位置。简言之,只有左右不起作用。这让我很困惑,因为我对运动使用了几乎相同的函数,下面是我的示例代码:
# current position is a list with x y z coordinates as filenames
#reader
metaImageReader = vtk.vtkMetaImageReader()
metaImageReader.SetFileName(filefolder + "%03d_%03d_%03d"%(currentPosition[0],currentPosition[1], currentPosition[2]) + extension)
metaImageReader.SetDataScalarTypeToUnsignedChar()
#metaImageReader.SetFileDimensionality(3)
metaImageReader.Update()
#create renderwindow
renWin = vtk.vtkRenderWindow()
renWin.SetSize(600,300)
#create renderer1
renderer_2d = vtk.vtkRenderer()
renderer_2d.SetViewport(0,0,0.5,1)
renderer_2d.SetBackground(1.0,1.0,1.0)
renWin.AddRenderer(renderer_2d)
#create renderer2
renderer_3d = vtk.vtkRenderer()
renderer_3d.SetViewport(0.5,0,1,1)
renderer_3d.SetBackground(0.0,0.0,0.0)
renWin.AddRenderer(renderer_3d)
mapper = vtk.vtkImageSliceMapper()
mapper.SetInput(metaImageReader.GetOutput())
mapper.Update()
actor = vtk.vtkImageSlice()
actor.SetMapper(mapper)
actor.Update()
renderer_2d.AddActor(actor)
def updateData():
global metaImageReader, actor, mapper, currentPosition, filefolder, extension, viewer, origin
metaImageReader.SetFileName(filefolder + "%03d_%03d_%03d"%(currentPosition[0],currentPosition[1], currentPosition[2]) + extension)
metaImageReader.Update()
mapper.Update()
actor.Update()
def keypress(obj,event):
key = obj.GetKeySym()
print key
if key == "w":
print "w"
moveUp()
elif key == "s":
print "s"
moveDown()
elif key == "d":
print "d"
moveRight()
elif key == "a":
print "a"
moveLeft()
def moveUp():
global currentPosition
x,y,z = currentPosition
y = y-1
currentPosition = x,y,z
updateData()
def moveDown():
global currentPosition
x,y,z = currentPosition
y = y+1
currentPosition = x,y,z
updateData()
def moveRight():
global currentPosition
x,y,z = currentPosition
x = x+1
currentPosition = x,y,z
updateData()
def moveLeft():
global currentPosition
x,y,z = currentPosition
x = x-1
currentPosition = x,y,z
updateData()
#create interactor
iren = vtk.vtkRenderWindowInteractor()
iren.AddObserver("KeyPressEvent", keypress)
iren.SetRenderWindow(renWin)
#visualization pipeline
# Source -> Reader -> Filter -> Mapper -> Actor
iren.Start()
renWin.Render()
除非
在renderwindow.Render()
被称为
更新数据()
行为仍然不稳定。因此renderwindow也需要更新。在
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