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Warning: session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in /var/www/tb-usercake/models/config.php on line 51
static BWImage bwInverted(BWImage bw) { if (bw == null) ret bw; int w = bw.getWidth(), h = bw.getHeight(); BWImage bw2 = new BWImage(w, h); for y to h: for x to w: bw2.setInt(x, y, 255-bw.getInt(x, y)); ret bw2; }