有没有办法在Pygame中更改导入的.obj文件的位置和大小？

pip install PyOpenGL

import pygame
from pygame.locals import *
from OpenGL.GL import *
from OpenGL.GLU import *

pygame.init()
display = (800, 600)
pygame.display.set_mode(display, DOUBLEBUF | OPENGL)
glClearColor(0.0, 0.0, 0.0, 0.0)
glEnable(GL_DEPTH_TEST)
glEnable(GL_LIGHTING)
glEnable(GL_LIGHT0)
glLightfv(GL_LIGHT0, GL_POSITION, (0, 1, 1, 0))

def load_obj(filename):
    vertices = []
    normals = []
    texcoords = []
    faces = []
    with open(filename, "r") as file:
        for line in file:
            if line.startswith("v "):
                vertex = list(map(float, line.split()[1:]))
                vertices.append(vertex)
            elif line.startswith("vn "):
                normal = list(map(float, line.split()[1:]))
                normals.append(normal)
            elif line.startswith("vt "):
                texcoord = list(map(float, line.split()[1:]))
                texcoords.append(texcoord)
            elif line.startswith("f "):
                face = []
                for face_vertex in line.split()[1:]:
                    indices = face_vertex.split("/")
                    vertex_index = int(indices[0]) - 1
                    texcoord_index = int(indices[1]) - 1
                    normal_index = int(indices[2]) - 1
                    face.append((vertex_index, texcoord_index, normal_index))
                faces.append(face)

    glBegin(GL_TRIANGLES)
    for face in faces:
        for vertex_index, texcoord_index, normal_index in face:
            glNormal3fv(normals[normal_index])
            glTexCoord2fv(texcoords[texcoord_index])
            glVertex3fv(vertices[vertex_index])
    glEnd()

def render_obj(filename, position, scale):
    glPushMatrix()
    glTranslatef(*position)
    glScalef(*scale)
    load_obj(filename)
    glPopMatrix()

position = [0, 0, -5]
scale = [1, 1, 1]

while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            quit()
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                position[0] -= 0.1
            elif event.key == pygame.K_RIGHT:
                position[0] += 0.1
            elif event.key == pygame.K_UP:
                position[1] += 0.1
            elif event.key == pygame.K_DOWN:
                position[1] -= 0.1
            elif event.key == pygame.K_KP_PLUS:
                scale[0] += 0.1
                scale[1] += 0.1
                scale[2] += 0.1
            elif event.key == pygame.K_KP_MINUS:
                scale[0] -= 0.1
                scale[1] -= 0.1
                scale[2] -= 0.1

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
    render_obj("filename.obj", position, scale)
    pygame.display.flip()
    pygame.time.wait(10)