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lbb resampler tweak

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This commit is contained in:
Nicolas Robidoux 2010-03-26 01:47:24 +00:00
parent 3b66ef1c51
commit 4f5bf235fe
1 changed files with 41 additions and 41 deletions
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82
libvips/resample/lbb.cpp
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@ -545,82 +545,82 @@ lbbicubic( const double c00,
\ \
const double xp1over2 = relative_x; \ const double xp1over2 = relative_x; \
const double xm1over2 = xp1over2 - 1.0; \ const double xm1over2 = xp1over2 - 1.0; \
const double onemx = 1.5 - xp1over2; \
const double onepx = 0.5 + xp1over2; \ const double onepx = 0.5 + xp1over2; \
const double onemx = 1.5 - xp1over2; \
const double xp1over2sq = xp1over2 * xp1over2; \ const double xp1over2sq = xp1over2 * xp1over2; \
\ \
const double yp1over2 = relative_y; \ const double yp1over2 = relative_y; \
const double ym1over2 = yp1over2 - 1.0; \ const double ym1over2 = yp1over2 - 1.0; \
const double onemy = 1.5 - yp1over2; \
const double onepy = 0.5 + yp1over2; \ const double onepy = 0.5 + yp1over2; \
const double onemy = 1.5 - yp1over2; \
const double yp1over2sq = yp1over2 * yp1over2; \ const double yp1over2sq = yp1over2 * yp1over2; \
\ \
const double xm1over2sq = xm1over2 * xm1over2; \ const double xm1over2sq = xm1over2 * xm1over2; \
const double ym1over2sq = ym1over2 * ym1over2; \ const double ym1over2sq = ym1over2 * ym1over2; \
\ \
const double twice1mx = onemx + onemx; \
const double twice1px = onepx + onepx; \ const double twice1px = onepx + onepx; \
const double twice1my = onemy + onemy; \
const double twice1py = onepy + onepy; \ const double twice1py = onepy + onepy; \
const double twice1mx = onemx + onemx; \
const double twice1my = onemy + onemy; \
\ \
const double xm1over2sq_times_ym1over2sq = xm1over2sq * ym1over2sq; \ const double xm1over2sq_times_ym1over2sq = xm1over2sq * ym1over2sq; \
const double xp1over2sq_times_ym1over2sq = xp1over2sq * ym1over2sq; \ const double xp1over2sq_times_ym1over2sq = xp1over2sq * ym1over2sq; \
const double xp1over2sq_times_yp1over2sq = xp1over2sq * yp1over2sq; \ const double xp1over2sq_times_yp1over2sq = xp1over2sq * yp1over2sq; \
const double xm1over2sq_times_yp1over2sq = xm1over2sq * yp1over2sq; \ const double xm1over2sq_times_yp1over2sq = xm1over2sq * yp1over2sq; \
\ \
const double xm1over2_times_ym1over2 = xm1over2 * ym1over2; \ const double four_times_1px_times_1py = twice1px * twice1py; \
const double xp1over2_times_ym1over2 = xp1over2 * ym1over2; \ const double four_times_1mx_times_1py = twice1mx * twice1py; \
const double twice_1mx_times_ym1over2 = twice1mx * ym1over2; \ const double twice_xp1over2_times_1py = xp1over2 * twice1py; \
const double twice_1px_times_ym1over2 = twice1px * ym1over2; \ const double twice_xm1over2_times_1py = xm1over2 * twice1py; \
\
const double xm1over2_times_yp1over2 = xm1over2 * yp1over2; \
const double xp1over2_times_yp1over2 = xp1over2 * yp1over2; \
const double twice_1mx_times_yp1over2 = twice1mx * yp1over2; \
const double twice_1px_times_yp1over2 = twice1px * yp1over2; \
\ \
const double twice_xm1over2_times_1my = xm1over2 * twice1my; \ const double twice_xm1over2_times_1my = xm1over2 * twice1my; \
const double twice_xp1over2_times_1my = xp1over2 * twice1my; \ const double twice_xp1over2_times_1my = xp1over2 * twice1my; \
const double four_times_1mx_times_1my = twice1mx * twice1my; \ const double four_times_1mx_times_1my = twice1mx * twice1my; \
const double four_times_1px_times_1my = twice1px * twice1my; \ const double four_times_1px_times_1my = twice1px * twice1my; \
\ \
const double twice_xm1over2_times_1py = xm1over2 * twice1py; \ const double twice_1px_times_ym1over2 = twice1px * ym1over2; \
const double twice_xp1over2_times_1py = xp1over2 * twice1py; \ const double twice_1mx_times_ym1over2 = twice1mx * ym1over2; \
const double four_times_1mx_times_1py = twice1mx * twice1py; \ const double xp1over2_times_ym1over2 = xp1over2 * ym1over2; \
const double four_times_1px_times_1py = twice1px * twice1py; \ const double xm1over2_times_ym1over2 = xm1over2 * ym1over2; \
\ \
const double c00 = \ const double xm1over2_times_yp1over2 = xm1over2 * yp1over2; \
const double xp1over2_times_yp1over2 = xp1over2 * yp1over2; \
const double twice_1mx_times_yp1over2 = twice1mx * yp1over2; \
const double twice_1px_times_yp1over2 = twice1px * yp1over2; \
\
const double c00 = \
four_times_1px_times_1py * xm1over2sq_times_ym1over2sq; \ four_times_1px_times_1py * xm1over2sq_times_ym1over2sq; \
const double c00dx = \ const double c10 = \
four_times_1mx_times_1py * xp1over2sq_times_ym1over2sq; \
const double c01 = \
four_times_1px_times_1my * xm1over2sq_times_yp1over2sq; \
const double c11 = \
four_times_1mx_times_1my * xp1over2sq_times_yp1over2sq; \
\
const double c00dx = \
twice_xp1over2_times_1py * xm1over2sq_times_ym1over2sq; \ twice_xp1over2_times_1py * xm1over2sq_times_ym1over2sq; \
const double c00dy = \ const double c10dx = \
twice_xm1over2_times_1py * xp1over2sq_times_ym1over2sq; \
const double c01dx = \
twice_xp1over2_times_1my * xm1over2sq_times_yp1over2sq; \
const double c11dx = \
twice_xm1over2_times_1my * xp1over2sq_times_yp1over2sq; \
\
const double c00dy = \
twice_1px_times_yp1over2 * xm1over2sq_times_ym1over2sq; \ twice_1px_times_yp1over2 * xm1over2sq_times_ym1over2sq; \
const double c10dy = \
twice_1mx_times_yp1over2 * xp1over2sq_times_ym1over2sq; \
const double c01dy = \
twice_1px_times_ym1over2 * xm1over2sq_times_yp1over2sq; \
const double c11dy = \
twice_1mx_times_ym1over2 * xp1over2sq_times_yp1over2sq; \
\
const double c00dxdy = \ const double c00dxdy = \
xp1over2_times_yp1over2 * xm1over2sq_times_ym1over2sq; \ xp1over2_times_yp1over2 * xm1over2sq_times_ym1over2sq; \
\
const double c10 = \
four_times_1mx_times_1py * xp1over2sq_times_ym1over2sq; \
const double c10dx = \
twice_xm1over2_times_1py * xp1over2sq_times_ym1over2sq; \
const double c10dy = \
twice_1mx_times_yp1over2 * xp1over2sq_times_ym1over2sq; \
const double c10dxdy = \ const double c10dxdy = \
xm1over2_times_yp1over2 * xp1over2sq_times_ym1over2sq; \ xm1over2_times_yp1over2 * xp1over2sq_times_ym1over2sq; \
\
const double c01 = \
four_times_1px_times_1my * xm1over2sq_times_yp1over2sq; \
const double c01dx = \
twice_xp1over2_times_1my * xm1over2sq_times_yp1over2sq; \
const double c01dy = \
twice_1px_times_ym1over2 * xm1over2sq_times_yp1over2sq; \
const double c01dxdy = \ const double c01dxdy = \
xp1over2_times_ym1over2 * xm1over2sq_times_yp1over2sq; \ xp1over2_times_ym1over2 * xm1over2sq_times_yp1over2sq; \
\
const double c11 = \
four_times_1mx_times_1my * xp1over2sq_times_yp1over2sq; \
const double c11dx = \
twice_xm1over2_times_1my * xp1over2sq_times_yp1over2sq; \
const double c11dy = \
twice_1mx_times_ym1over2 * xp1over2sq_times_yp1over2sq; \
const double c11dxdy = \ const double c11dxdy = \
xm1over2_times_ym1over2 * xp1over2sq_times_yp1over2sq; \ xm1over2_times_ym1over2 * xp1over2sq_times_yp1over2sq; \
\ \