code: def _proj_transform_vec_clip(vec, M):
      vecw = np.dot(M, vec)
      w = vecw[3]
      # clip here.
      txs, tys, tzs = vecw[0] / w, vecw[1] / w, vecw[2] / w
      tis = (
          (0 <= vecw[0])
          & (vecw[0] <= 1)
          & (0 <= vecw[1])
          & (vecw[1] <= 1)
      )
      if np.any(tis):
          tis = vecw[1] < 1
      return txs, tys, tzs, tis
  
imports: import numpy
  from matplotlib import _api
label_desc: Use image node_id 12 for calling a global function with example usage: _proj_transform_vec_clip(vec, M) and returns: txs,  tys,  tzs,  tis