code: def pts2dots(d, a, b, c):
      """Convert point coordinates to dot products"""
      D00 = np.dot(d, d)
      D01 = np.dot(d, a)
      D02 = np.dot(d, b)
      D03 = np.dot(d, c)
      D11 = np.dot(a, a)
      D12 = np.dot(a, b)
      D13 = np.dot(a, c)
      D22 = np.dot(b, b)
      D23 = np.dot(b, c)
      D33 = np.dot(c, c)
      return D00, D01, D02, D03, D11, D12, D13, D22, D23, D33
  
imports: from itertools import combinations
  import numpy
  import numpy.linalg
  import pytest
  from numpy.testing import assert_almost_equal, assert_array_equal
  from ..None import intvol
label_desc: Use image node_id 7 for calling a global function with example usage: pts2dots(d, a, b, c) and returns: D00,  D01,  D02,  D03,  D11,  D12,  D13,  D22,  D23,  D33