Fixing bugs

[ifilot]

• Fix bug that second tessellation uses wrong algorithm
• Adding progress bar when using generator

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 42.45%. Comparing base (3f10b72) to head (9d5f247).

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #10   +/-   ##
=======================================
  Coverage   42.45%   42.45%           
=======================================
  Files           5        5           
  Lines        1166     1166           
  Branches      658      658           
=======================================
  Hits          495      495           
  Misses        157      157           
  Partials      514      514