view Meerwald/bruyn_common.c @ 22:d8551fb39a5e default tip

Added tag v0.6 for changeset 1c4ccd635a68
author Peter Meerwald-Stadler <pmeerw@pmeerw.net>
date Sat, 28 Jan 2023 23:57:51 +0100
parents be303a3f5ea8
children
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#include "bruyn_common.h"

gray lookup_pattern(int pattern, int c, int r) {
#define A CATEGORY_A
#define B CATEGORY_B

  gray pattern1[4][4] =
    {{A, A, B, B},
     {A, A, B, B},
     {B, B, A, A},
     {B, B, A, A}};

  gray pattern2[8][8] =
    {{B, B, B, B, A, A, A, A},
     {B, B, B, B, A, A, A, A},
     {B, B, B, B, A, A, A, A},
     {B, B, B, B, A, A, A, A},
     {A, A, A, A, B, B, B, B},
     {A, A, A, A, B, B, B, B},
     {A, A, A, A, B, B, B, B},
     {A, A, A, A, B, B, B, B}};

  gray pattern3[2][2] =
    {{A, B}, {B, A}};

#undef A
#undef B

  switch (pattern) {
    case 1:
      return pattern1[r % 4][c % 4];
      break;
    case 2:
      return pattern2[r % 8][c % 8];
      break;
    case 3:
      return pattern3[r % 2][c % 2];
      break;
  }

  return CATEGORY_VOID;
}


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