2 This file is part of the graphics core library.
4 Copyright (c) 2004, 2005 John Tsiombikas <nuclear@siggraph.org>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include "timeline.hpp"
24 static inline T wrap(T n, T low, T high) {
36 static inline T bounce(T n, T low, T high) {
37 T interval = high - low;
38 T offs = n % interval;
40 if((n / interval) % 2) {
49 unsigned long get_timeline_time(unsigned long time, unsigned long start, unsigned long end, TimelineMode mode) {
52 time = wrap(time, start, end);
56 time = bounce(time, start, end);
60 if(time < start) time = start;
61 if(time > end) time = end;