26 February 2022 01:27:25 PM

SPHERE_STEREOGRAPH_TEST
  C version
  Test the SPHERE_STEREOGRAPH library.

TEST01
  SPHERE_STEREOGRAPH maps from sphere to plane.
  SPHERE_STEREOGRAPH_INVERSE is the inverse map.
  Check that these two functions are inverses.

  Map points from sphere to plane to sphere.
  RMS difference for 100 points was 2.27002e-17

  Map points from plane to sphere to plane.
  RMS difference for 100 points was 6.98086e-18

TEST02
  SPHERE_STEREOGRAPH standard mapping from sphere to plane.
  SPHERE_STEREOGRAPH2 generalized mapping:
  (focus and center are arbitrary)
  Check that these two functions can agree.

  Map points from sphere to plane.
  RMS difference for 100 points was 2.66338e-17

  Map points from plane to sphere.
  RMS difference for 100 points was 1.12771e-17

TEST03
  SPHERE_STEREOGRAPH2 maps from sphere to plane.
  SPHERE_STEREOGRAPH2_INVERSE is the inverse map.
  Check that these two functions are inverses.

  Using radius = 0.996643

  Center:
      0.561695      0.415307     0.0661187

  Focus:
      0.218418      0.956318      0.829509

  Map points from sphere to plane to sphere.
  RMS difference for 100 points was 3.23851e-17

  Map points from plane to sphere to plane.
  RMS difference for 100 points was 3.32351e-17

SPHERE_STEREOGRAPH_TEST
  Normal end of execution.

26 February 2022 01:27:25 PM