立即在python vtk中翻译

如何解决立即在python vtk中翻译

我使用下面的代码旋转和平移对象，但是每次查看结果都需要运行程序。我添加了一个滑块，但是每次更改滑块的位置时，都需要运行它以查看结果。

有什么办法可以立即旋转和平移？

transform = vtk.vtkTransform()
transform.Translate(-30,150,0)
transform.Scale(1,1,1)
transform.RotateWXYZ(-90,0)

transformFilter = vtk.vtkTransformPolyDataFilter()
transformFilter.SetTransform(transform)
transformFilter.SetInputConnection(reader.GetOutputPort())
transformFilter.Update()

解决方法

import sys
import vtk
from PyQt5 import QtGui
from PyQt5.QtCore import Qt
from PyQt5 import QtWidgets
from PyQt5.QtWidgets import QHBoxLayout,QDialog,QGridLayout,QApplication,QWidget,QSlider,QLabel
from vtk.qt.QVTKRenderWindowInteractor import QVTKRenderWindowInteractor


filename = "F:\Amir\STL\example.stl"
filename1 = "F:\Amir\STL\wetenschap_ct_w._r_femur_5_001_mesh.stl"


class Window(QWidget):
    def __init__(self):
        super().__init__()
        global size

        self.title = "PyQt5 Slider"
        self.top = 200
        self.left = 500
        self.width = 400
        self.height = 300
        self.setWindowIcon(QtGui.QIcon("icon.png"))
        self.setWindowTitle(self.title)
        self.setGeometry(self.left,self.top,self.width,self.height)
        hbox = QHBoxLayout()
        self.slider = QSlider()
        self.slider.setOrientation(Qt.Vertical)
        self.slider.setTickPosition(QSlider.TicksBelow)
        self.slider.setTickInterval(5)
        self.slider.setMinimum(-100)
        self.slider.setMaximum(100)
        self.slider.valueChanged.connect(self.changedValue)
        self.label = QLabel("0")
        self.label.setFont(QtGui.QFont("Sanserif",15))
        hbox.addWidget(self.slider)
        hbox.addWidget(self.label)
        self.setLayout(hbox)


    def changedValue(self):
        global size

        self.size = self.slider.value()
        print(self.size)
        self.label.setText(str(self.size))


        
class MainWindow(QtWidgets.QMainWindow):

    def __init__(self):
        super().__init__()
        global size

        self.widget = QtWidgets.QWidget()
        self.gridLayout = QtWidgets.QGridLayout()

        #First STL file
        reader = vtk.vtkSTLReader()
        reader.SetFileName(filename)


        #self.size1 = Window()
        #size2 = self.size1.size

        transform = vtk.vtkTransform()
        transform.Translate(**self.size**,0)
        transform.Scale(1,1,1)


        transformFilter = vtk.vtkTransformPolyDataFilter()
        transformFilter.SetTransform(transform)
        transformFilter.SetInputConnection(reader.GetOutputPort())
        transformFilter.Update()

        mapper = vtk.vtkPolyDataMapper()
        if vtk.VTK_MAJOR_VERSION <= 5:
            mapper.SetInput(transformFilter.GetOutput())
        else:
            mapper.SetInputConnection(transformFilter.GetOutputPort())

        actor = vtk.vtkActor()
        actor.SetMapper(mapper)


        #Second STL File
        reader1 = vtk.vtkSTLReader()
        reader1.SetFileName(filename1)

        mapper1 = vtk.vtkPolyDataMapper()
        if vtk.VTK_MAJOR_VERSION <= 5:
            mapper1.SetInput(reader1.GetOutput())
        else:
            mapper1.SetInputConnection(reader1.GetOutputPort())

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

        self.vtkwidget = QVTKRenderWindowInteractor(self.widget)
        self.gridLayout.addWidget(self.vtkwidget,3,3)
        
        # Create a rendering window and renderer
        self.ren = vtk.vtkRenderer()
        self.vtkwidget.GetRenderWindow().AddRenderer(self.ren)
        
        self.iren = self.vtkwidget.GetRenderWindow().GetInteractor()

        self.ren.AddActor(actor)
        self.ren.AddActor(actor1)

        self.iren.Initialize()


        # Enable user interface interactor

        self.widget.setLayout(self.gridLayout)
        self.setCentralWidget(self.widget)

        self.ren.ResetCamera()



if __name__ == "__main__":
 
    app = QtWidgets.QApplication(sys.argv)
 
    window = MainWindow()
    window.show()

    window1 = Window()
    window1.show()
    
    sys.exit(app.exec_())