smbinterp/bin/parse_gmsh3D.py

#!/usr/bin/env python

import sys

import numpy as np

import interp.bootstrap
from   interp.grid.gmsh import gmsh_grid3D
from   interp.tools import exact_func_3D, improved_answer, log

from interp.grid import grid

def exact(X):
  x = X[0]
  y = X[1]
  z = X[2]
  return 1+ x*x + y*y + z*z



if __name__ == '__main__':
  if len(sys.argv) != 2:
    print >> sys.stderr, "usage: %s <gmsh file>" % sys.argv[0]
    sys.exit(1)

  g = gmsh_grid3D(sys.argv[1])
  g.q = np.array([exact(x) for x in g.verts])

  X = np.array([0.2, 0.5, 0.01])
  R = g.get_containing_simplex(X)
  R, S = g.get_simplex_and_nearest_points(X, 10)
  print R
  print "r", R
  print "s", S

  results = {True:0, False:0}
  for i in xrange(1000):
    X = np.random.random((1,3))[0]

    a = g.run_baker(X, order = 4, extra_points = 32)
    e = exact_func_3D(X)
    results[improved_answer(a, e)] += 1

  print results
  g.normalize_q()
  # print g.toxml()

  igg = grid(g.verts, g.q)