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| author | Simon Tatham <anakin@pobox.com> | 2005-06-17 11:51:52 +0000 |
|---|---|---|
| committer | Simon Tatham <anakin@pobox.com> | 2005-06-17 11:51:52 +0000 |
| commit | 552b18a5929a95d0e91fd1d1d3a8b14ae974da2c (patch) | |
| tree | ad964b833e60bc8796d90566a5010aeeb412f849 /cube.c | |
| parent | f2e74bd09138f87f0f42a7bf38c2833848fefa19 (diff) | |
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An email conversation with Chuck Fresno turned up several forms of
symmetry which were not implemented in Solo. Now they are.
In the process I've completely retired symmetry_limit() on the
grounds that some of the new symmetries do not have a rectangular
base region; instead I determine the base region by going through
the grid and finding every square which is not transformed into a
lexicographically lower square by any symmetry operation. This means
that adding new symmetries is now _only_ a matter of encoding the
actual transformation rules.
[originally from svn r5965]
Diffstat (limited to 'cube.c')
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