pyqt 使用openglwidget导入obj模型

可以使用PyOpenGL库来导入obj模型，然后在PyQt中使用OpenGLWidget来显示模型。以下是一个简单的示例代码：

from PyQt5.QtWidgets import QApplication, QMainWindow, QOpenGLWidget
from PyQt5.QtGui import QOpenGLShader, QOpenGLShaderProgram, QOpenGLVertexArrayObject, QOpenGLBuffer
from PyQt5.QtCore import QFile, QTextStream
from OpenGL.GL import *

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()

        # 创建OpenGLWidget
        self.gl_widget = OpenGLWidget(self)
        self.setCentralWidget(self.gl_widget)

class OpenGLWidget(QOpenGLWidget):
    def __init__(self, parent=None):
        super().__init__(parent)

        # 加载obj文件
        self.vertices = []
        self.normals = []
        self.tex_coords = []
        with open('model.obj', 'r') as f:
            for line in f:
                if line.startswith('v '):
                    self.vertices.append(list(map(float, line.split()[1:])))
                elif line.startswith('vn '):
                    self.normals.append(list(map(float, line.split()[1:])))
                elif line.startswith('vt '):
                    self.tex_coords.append(list(map(float, line.split()[1:])))

        # 创建OpenGLShaderProgram
        self.shader_program = QOpenGLShaderProgram()
        self.shader_program.addShaderFromSourceFile(QOpenGLShader.Vertex, 'vertex_shader.glsl')
        self.shader_program.addShaderFromSourceFile(QOpenGLShader.Fragment, 'fragment_shader.glsl')
        self.shader_program.link()

        # 创建OpenGLVertexArrayObject和OpenGLBuffer
        self.vao = QOpenGLVertexArrayObject()
        self.vbo = QOpenGLBuffer(QOpenGLBuffer.VertexBuffer)
        self.vbo.create()
        self.vbo.bind()
        self.vbo.allocate(len(self.vertices) * 8 * 4)
        self.vbo.write(0, bytes(self.vertices + self.normals + self.tex_coords))
        self.vao.create()
        self.vao.bind()
        self.shader_program.enableAttributeArray(0)
        self.shader_program.setAttributeBuffer(0, GL_FLOAT, 0, 3, 8 * 4)
        self.shader_program.enableAttributeArray(1)
        self.shader_program.setAttributeBuffer(1, GL_FLOAT, 3 * 4, 3, 8 * 4)
        self.shader_program.enableAttributeArray(2)
        self.shader_program.setAttributeBuffer(2, GL_FLOAT, 6 * 4, 2, 8 * 4)

    def initializeGL(self):
        glClearColor(0.2, 0.3, 0.3, 1.0)
        glEnable(GL_DEPTH_TEST)

    def paintGL(self):
        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
        self.shader_program.bind()
        self.vao.bind()
        glDrawArrays(GL_TRIANGLES, 0, len(self.vertices))

if __name__ == '__main__':
    app = QApplication([])
    window = MainWindow()
    window.show()
    app.exec_()

其中，vertex_shader.glsl和fragment_shader.glsl是OpenGL的着色器代码，用于渲染模型。