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eeshow/misc.c (matrix_to_angle, matrix_is_mirrored): add matrix 0, -1, 1, 0

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Probably mirrored + 270 deg.
This commit is contained in:
Werner Almesberger 2016-08-11 02:35:56 -03:00
parent 06d5a924c6
commit bddbad65f1
1 changed files with 11 additions and 4 deletions
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15
eeshow/misc.c
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@ -35,12 +35,16 @@ unsigned matrix_to_angle(const int m[6])
return 180;
if (eq(m, 0, 1, 1, 0))
return 270;
if (eq(m, -1, 0, 0, -1))
return 0;
if (eq(m, 1, 0, 0, 1)) /* x-flipped */
return 180;
if (eq(m, 0, 1, -1, 0)) /* x-flipped, 90 deg */
return 90;
if (eq(m, 1, 0, 0, 1)) /* x-flipped */
return 180;
if (eq(m, 0, -1, 1, 0)) /* x-flipped, 270 deg */
return 270;
fprintf(stderr, "unrecognized matrix %d %d %d %d\n",
m[1], m[2], m[4], m[5]);
exit(1);
@ -60,10 +64,13 @@ bool matrix_is_mirrored(const int m[6])
if (eq(m, -1, 0, 0, -1))
return 1;
if (eq(m, 1, 0, 0, 1))
return 1;
if (eq(m, 0, 1, -1, 0))
return 1;
if (eq(m, 1, 0, 0, 1))
return 1;
if (eq(m, 0, -1, 1, 0))
return 1;
assert(0);
}