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author | Lars-Dominik Braun <lars@6xq.net> | 2015-05-10 16:28:23 +0200 |
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committer | Lars-Dominik Braun <lars@6xq.net> | 2015-05-10 16:28:23 +0200 |
commit | a83af6c9ed35849821f85267c7e9670ec87ad834 (patch) | |
tree | a574c66655d6ee418d544b0f052dc8ccc07b4bd0 /flam3.c | |
parent | ad199eccf9334c8ee00f52686a0f401b82f402bc (diff) | |
download | pucket-a83af6c9ed35849821f85267c7e9670ec87ad834.tar.gz pucket-a83af6c9ed35849821f85267c7e9670ec87ad834.tar.bz2 pucket-a83af6c9ed35849821f85267c7e9670ec87ad834.zip |
Refactor det_matrix
Diffstat (limited to 'flam3.c')
-rw-r--r-- | flam3.c | 18 |
1 files changed, 6 insertions, 12 deletions
@@ -1242,23 +1242,17 @@ static double round6(double x) { return 1e-6*(int)(x+0.5); } +static double det_matrix(double2 m[3]) { + return m[0][0] * m[1][1] - m[0][1] * m[1][0]; +} + static int compare_xforms(const void *av, const void *bv) { flam3_xform *a = (flam3_xform *) av; flam3_xform *b = (flam3_xform *) bv; - double aa[2][2]; - double bb[2][2]; double ad, bd; - aa[0][0] = a->c[0][0]; - aa[0][1] = a->c[0][1]; - aa[1][0] = a->c[1][0]; - aa[1][1] = a->c[1][1]; - bb[0][0] = b->c[0][0]; - bb[0][1] = b->c[0][1]; - bb[1][0] = b->c[1][0]; - bb[1][1] = b->c[1][1]; - ad = det_matrix(aa); - bd = det_matrix(bb); + ad = det_matrix(a->c); + bd = det_matrix(b->c); if (a->color_speed > b->color_speed) return 1; if (a->color_speed < b->color_speed) return -1; |