claw  1.9.0
tweener_sequence.cpp
1 /*
2  CLAW - a C++ Library Absolutely Wonderful
3 
4  CLAW is a free library without any particular aim but being useful to
5  anyone.
6 
7  Copyright (C) 2005-2011 Julien Jorge
8 
9  This library is free software; you can redistribute it and/or
10  modify it under the terms of the GNU Lesser General Public
11  License as published by the Free Software Foundation; either
12  version 2.1 of the License, or (at your option) any later version.
13 
14  This library is distributed in the hope that it will be useful,
15  but WITHOUT ANY WARRANTY; without even the implied warranty of
16  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  Lesser General Public License for more details.
18 
19  You should have received a copy of the GNU Lesser General Public
20  License along with this library; if not, write to the Free Software
21  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22  contact: julien.jorge@stuff-o-matic.com
23 */
30 
36 {
37  m_tweeners.push_back(t);
38 }
39 
44 {
45  m_tweeners.clear();
46 }
47 
51 claw::tween::tweener_sequence* claw::tween::tweener_sequence::do_clone() const
52 {
53  return new tweener_sequence(*this);
54 }
55 
59 bool claw::tween::tweener_sequence::do_is_finished() const
60 {
61  return m_tweeners.empty();
62 }
63 
68 double claw::tween::tweener_sequence::do_update(double dt)
69 {
70  double result(dt);
71 
72  while((result != 0) && !m_tweeners.empty())
73  {
74  result = m_tweeners.front().update(result);
75 
76  if(m_tweeners.front().is_finished())
77  m_tweeners.erase(m_tweeners.begin());
78  }
79 
80  return result;
81 }
82 
87 {
88  return m_tweeners.empty();
89 }
void clear()
Remove all the tweeners from the sequence.
void insert(const tweener &t)
Add a tweener in the sequence.
The tweener sequence manages several tweeners in a common timeline.
bool empty() const
Tells if there is nothing in this sequence.
A tweener makes a value to evolve through time from a initial value to an end value according to a gi...
Definition: tweener.hpp:47
The tweener sequence manages several tweeners in a common timeline.