如何裁剪在具有旋转QGraphicsRectItem的场景上设置的QPixmap？

from PyQt5.QtWidgets import QGraphicsScene, QGraphicsView
from PyQt5.QtGui import QPixmap
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QApplication
import sys

if __name__ == '__main__':
    app = QApplication(sys.argv)
    
    # 创建场景和视图
    scene = QGraphicsScene()
    view = QGraphicsView(scene)
    
    # 创建旋转的矩形项
    rect_item = scene.addRect(0, 0, 200, 200)
    rect_item.setRotation(45)  # 设置旋转角度
    
    # 创建要设置的图像
    pixmap = QPixmap('image.jpg')
    
    # 裁剪图像
    rect = rect_item.boundingRect()
    cropped_pixmap = pixmap.copy(rect.toRect())
    
    # 创建图像项并设置图像
    pixmap_item = scene.addPixmap(cropped_pixmap)
    
    view.show()
    sys.exit(app.exec_())