code: def generate_mask_uv(self, mask, positions):
      uv_size = (self.uv_size[1], self.uv_size[0], 3)
      h, w, c = uv_size
      uv = np.zeros(
          shape=(self.uv_size[1], self.uv_size[0], 3), dtype=np.uint8
      )
      stxr, styr = positions[0], positions[1]
      etxr, etyr = positions[2], positions[3]
      stx, sty = int(w * stxr), int(h * styr)
      etx, ety = int(w * etxr), int(h * etyr)
      height = ety - sty
      width = etx - stx
      mask = cv2.resize(mask, (width, height))
      uv[sty:ety, stx:etx] = mask
      return uv
  
imports: import os, sys, datetime
  import numpy
  import os.path
  import albumentations
  from albumentations.core.transforms_interface import ImageOnlyTransform
  from .face_analysis import FaceAnalysis
  from ..utils import get_model_dir
  from ..thirdparty import face3d
  from ..data import get_image
  from ..utils import DEFAULT_MP_NAME
  import cv2
label_desc: Use image node_id 9 for calling the MaskRenderer obj's underlying member method code with example usage: obj.generate_mask_uv(mask, positions) and returns: uv