From d039af74697e68af191f5ab9b005c7bb7116cd5f Mon Sep 17 00:00:00 2001 From: Stefano Ceccherini Date: Mon, 13 Jun 2005 15:29:08 +0000 Subject: [PATCH] Reverted to the previous algorithm, which is just another version of the same one: they produce slightly different results, but this one should be faster as it doesn't use divisions. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13097 a95241bf-73f2-0310-859d-f6bbb57e9c96 --- src/servers/app/SystemPalette.cpp | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/src/servers/app/SystemPalette.cpp b/src/servers/app/SystemPalette.cpp index a04b606ea4..56a3f39ac3 100644 --- a/src/servers/app/SystemPalette.cpp +++ b/src/servers/app/SystemPalette.cpp @@ -148,9 +148,12 @@ color_distance(uint8 red1, uint8 green1, uint8 blue1, // distance according to psycho-visual tests int rmean = ((int)red1 + (int)red2) / 2; - return (2 + rmean / 256) * rd * rd + /*return (2 + rmean / 256) * rd * rd + 4 * gd * gd - + (2 + (255 - rmean) / 256) * bd * bd; + + (2 + (255 - rmean) / 256) * bd * bd;*/ + return (((512 + rmean) * rd * rd) >> 8) + + 4 * gd * gd + + (((767 - rmean) * bd * bd) >> 8); }