pyqt 使用openglwidget导入obj模型

可以使用PyOpenGL库来实现这个功能，具体实现方法可以参考以下代码：

from PyQt5.QtWidgets import QApplication, QMainWindow, QOpenGLWidget
from PyQt5.QtGui import QOpenGLShader, QOpenGLShaderProgram, QOpenGLTexture
from PyQt5.QtCore import Qt
import sys

class OpenGLWidget(QOpenGLWidget):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.vertices = []
        self.indices = []
        self.texture_coords = []
        self.texture = None

    def initializeGL(self):
        self.initializeOpenGLFunctions()
        self.loadObjModel('model.obj')
        self.loadTexture('texture.png')

    def paintGL(self):
        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
        glLoadIdentity()
        glTranslatef(0.0, 0.0, -5.0)
        glRotatef(30, 1.0, 0.0, 0.0)
        glRotatef(30, 0.0, 1.0, 0.0)
        glEnable(GL_TEXTURE_2D)
        self.texture.bind()
        glBegin(GL_TRIANGLES)
        for i in range(0, len(self.indices), 3):
            v1 = self.vertices[self.indices[i]]
            v2 = self.vertices[self.indices[i+1]]
            v3 = self.vertices[self.indices[i+2]]
            t1 = self.texture_coords[self.indices[i]]
            t2 = self.texture_coords[self.indices[i+1]]
            t3 = self.texture_coords[self.indices[i+2]]
            glTexCoord2f(t1[0], t1[1])
            glVertex3f(v1[0], v1[1], v1[2])
            glTexCoord2f(t2[0], t2[1])
            glVertex3f(v2[0], v2[1], v2[2])
            glTexCoord2f(t3[0], t3[1])
            glVertex3f(v3[0], v3[1], v3[2])
        glEnd()

    def resizeGL(self, width, height):
        glViewport(0, 0, width, height)
        glMatrixMode(GL_PROJECTION)
        glLoadIdentity()
        aspect_ratio = width / height
        gluPerspective(45.0, aspect_ratio, 0.1, 100.0)
        glMatrixMode(GL_MODELVIEW)

    def loadObjModel(self, filename):
        with open(filename, 'r') as f:
            for line in f:
                if line.startswith('v '):
                    self.vertices.append(list(map(float, line.split()[1:])))
                elif line.startswith('vt '):
                    self.texture_coords.append(list(map(float, line.split()[1:])))
                elif line.startswith('f '):
                    self.indices.extend([int(i.split('/')[0])-1 for i in line.split()[1:]])

    def loadTexture(self, filename):
        self.texture = QOpenGLTexture(QImage(filename))

if __name__ == '__main__':
    app = QApplication(sys.argv)
    window = QMainWindow()
    glWidget = OpenGLWidget(window)
    window.setCentralWidget(glWidget)
    window.resize(800, 600)
    window.show()
    sys.exit(app.exec_())

这段代码实现了使用PyQt和PyOpenGL加载obj模型并显示纹理的功能。其中，loadObjModel()函数用于解析obj文件，loadTexture()函数用于加载纹理图片，paintGL()函数用于绘制模型。