1.py

import sys
from PyQt5 import QtWidgets
from PyQt5.QtOpenGL import QGLWidget
from OpenGL.GL import *
from OpenGL.GLUT import *
from OpenGL.GLU import *
import numpy as np

class MainWindow(QtWidgets.QMainWindow):

    def __init__(self, parent=None):
        super(MainWindow, self).__init__(parent)
        self.widget = GLWidget(self)
        self.setCentralWidget(self.widget)
        self.show()

class GLWidget(QGLWidget):

    def __init__(self, parent):
        QGLWidget.__init__(self, parent)
        self.setMinimumSize(500, 500)

    def initializeGL(self):
        glClearColor(0.0, 0.0, 0.0, 1.0)
        glEnable(GL_DEPTH_TEST)

    def paintGL(self):
        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
        self.draw_func()

    def draw_func(self):
        x = np.linspace(-5, 5, 400)
        y = np.linspace(-5, 5, 400)
        X, Y = np.meshgrid(x, y)
        Z =  np.sin(X*2)

        glPushMatrix()
        glRotatef(60, 1.0, 0.0, 0.0)
        glRotatef(-20, 0.0, 0.0, 1.0)

        for i in range(Z.shape[0]-1):
            glBegin(GL_TRIANGLE_STRIP)
            for j in range(Z.shape[1]):
                glVertex3f(X[i,j], Y[i,j], Z[i,j])
                glVertex3f(X[i+1,j], Y[i+1,j], Z[i+1,j])
            glEnd()

        glPopMatrix()

    def resizeGL(self, w, h):
        glViewport(0, 0, w, h)
        glMatrixMode(GL_PROJECTION)
        glLoadIdentity()
        gluPerspective(60.0, w/h, 1.0, 100.0)
        glMatrixMode(GL_MODELVIEW)
        glLoadIdentity()
        gluLookAt(0.0, -10.0, 10.0, 0.0, 0.0, 0.0, 0.0, 0.0, 1.0)

if __name__ == '__main__':
    app = QtWidgets.QApplication(sys.argv)
    window = MainWindow()
    sys.exit(app.exec_())