Question

我试图创建一个简单的GUI，其中包含用于查看STL文件的嵌入式mplot3d小部件。我目前正在使用PyQt4和Qt Designer来创建布局和python 3.6.2。我已经使用this post作为起点，并且我已经能够成功实现自定义的mplot3d小部件。但是，我希望能够动态更新mplot3d小部件（例如，单击按钮以加载新的stl文件并更新图形/小部件）。我知道这对于使用

的2D matplotlib数字是可能的

manager = matplotlib.get_current_fig_manager()

manager.canvas.draw()

更新常规的matplotlib图。但这对于嵌入式matplotlib小部件是否可行？还是mplot3d自定义小部件？

我应该在QtMplCanvas（FigureCanvas）类中编写新方法吗？我似乎无法从

中找到答案

FigureCanvasQTAgg

docs如何从matplotlibs后端更新小部件。我的代码有点长，但我会尝试包含相关位：

from PyQt4 import QtCore, QtGui
import os
import sys

from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.backends.backend_qt4 import NavigationToolbar2QT as NavigationToolbar

from matplotlib.figure import Figure
from mpl_toolkits.mplot3d import Axes3D

from stl import mesh
import matplotlib.pyplot as plt
from mpl_toolkits import mplot3d
plt.switch_backend('Qt4Agg')

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName(_fromUtf8("MainWindow"))
        MainWindow.resize(1007, 607)
        self.centralwidget = QtGui.QWidget(MainWindow)
        self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
        self.gridLayout = QtGui.QGridLayout(self.centralwidget)
        self.gridLayout.setObjectName(_fromUtf8("gridLayout"))
        self.line = QtGui.QFrame(self.centralwidget)
        self.line.setFrameShape(QtGui.QFrame.VLine)
        self.line.setFrameShadow(QtGui.QFrame.Sunken)
        self.line.setObjectName(_fromUtf8("line"))
        self.gridLayout.addWidget(self.line, 2, 1, 1, 1)

        # STL VIEWER       
        self.graphicsView_STL = MPL_WIDGET_3D(self.centralwidget)
        self.graphicsView_STL.setObjectName(_fromUtf8("graphicsView_STL"))
        self.gridLayout.addWidget(self.graphicsView_STL, 2, 0, 1, 1)

        # File load btn
        self.import_tlbtn = QtGui.QToolButton(self.centralwidget)
        self.import_tlbtn.setObjectName(_fromUtf8("import_tlbtn"))
        self.gridLayout.addWidget(self.import_tlbtn, 1, 0, 1, 1)

#... More Widgets, layouts, etc.

    def retranslateUi(self, MainWindow):
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow", None))
        self.import_tlbtn.setText(_translate("MainWindow", "...", None))
        self.label_slice.setText(_translate("MainWindow", "Slice", None))
        self.label_import.setText(_translate("MainWindow", "Import STL File", None))

......来自链接的代码

....用于连接方法的新文件..

from PyQt4 import QtCore, QtGui
import UI_DED

import sys
import os
import matplotlib.pyplot as plt
from mpl_toolkits import mplot3d
from stl import mesh

''' CONNECTING METHODS HERE '''

def open_file():
        # Open a new file selection window
        widget_f = QtGui.QWidget()
        widget_f.resize(320, 240)
        widget_f.setWindowTitle("Select a file")
        filename = QtGui.QFileDialog.getOpenFileName(widget_f, 'Open File', '/')
        if filename == '':
                pass
        else:
                your_mesh = mesh.Mesh.from_file(filename)
                stl_update(your_mesh)

# Some sort of method for updating the widget                
def stl_update():
        pass
        # Some method for updating canvas....

if __name__ == "__main__":

        plt.switch_backend('Qt4Agg')
        # Set window from UI_DED
        app = QtGui.QApplication(sys.argv)
        MainWindow = UI_DED.QtGui.QMainWindow()
        ui = UI_DED.Ui_MainWindow()
        ui.setupUi(MainWindow)
        MainWindow.show()

        # Connect widgets here

        # Import STL File
        ui.import_tlbtn.clicked.connect(open_file)


        # Exit
        sys.exit(app.exec_())

使用PyQt Designer进行mplot3d动态更新

0 个答案: