blob: 6169f144719d8d0c785bde53bbf0895d9aba2863 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<!-- Copyright (C) 2017-2021 David Thompson davet@gnu.org
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.3
or any later version published by the Free Software Foundation;
with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
A copy of the license is included in the section entitled "GNU
Free Documentation License".
A copy of the license is also available from the Free Software
Foundation Web site at http://www.gnu.org/licenses/fdl.html.
* Chickadee: (chickadee). Game programming toolkit for Guile.
The document was typeset with
http://www.texinfo.org/ (GNU Texinfo).
-->
<!-- Created by GNU Texinfo 6.7, http://www.gnu.org/software/texinfo/ -->
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Easings (The Chickadee Game Toolkit)</title>
<meta name="description" content="Easings (The Chickadee Game Toolkit)">
<meta name="keywords" content="Easings (The Chickadee Game Toolkit)">
<meta name="resource-type" content="document">
<meta name="distribution" content="global">
<meta name="Generator" content="makeinfo">
<link href="index.html" rel="start" title="Top">
<link href="Index.html" rel="index" title="Index">
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
<link href="Math.html" rel="up" title="Math">
<link href="Bezier-Curves.html" rel="next" title="Bezier Curves">
<link href="Quaternions.html" rel="prev" title="Quaternions">
<style type="text/css">
<!--
a.summary-letter {text-decoration: none}
blockquote.indentedblock {margin-right: 0em}
div.display {margin-left: 3.2em}
div.example {margin-left: 3.2em}
div.lisp {margin-left: 3.2em}
kbd {font-style: oblique}
pre.display {font-family: inherit}
pre.format {font-family: inherit}
pre.menu-comment {font-family: serif}
pre.menu-preformatted {font-family: serif}
span.nolinebreak {white-space: nowrap}
span.roman {font-family: initial; font-weight: normal}
span.sansserif {font-family: sans-serif; font-weight: normal}
ul.no-bullet {list-style: none}
@media (min-width: 1140px) {
body {
margin-left: 14rem;
margin-right: 4rem;
max-width: 52rem;
}
}
@media (min-width: 800px) and (max-width: 1140px) {
body {
margin-left: 6rem;
margin-right: 4rem;
max-width: 52rem;
}
}
@media (max-width: 800px) {
body {
margin: 1rem;
}
}
-->
</style>
<link rel="stylesheet" type="text/css" href="https://dthompson.us/css/dthompson.css">
</head>
<body lang="en">
<span id="Easings"></span><div class="header">
<p>
Next: <a href="Bezier-Curves.html" accesskey="n" rel="next">Bezier Curves</a>, Previous: <a href="Quaternions.html" accesskey="p" rel="prev">Quaternions</a>, Up: <a href="Math.html" accesskey="u" rel="up">Math</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index.html" title="Index" rel="index">Index</a>]</p>
</div>
<hr>
<span id="Easings-1"></span><h4 class="subsection">5.2.6 Easings</h4>
<p>Easing functions are essential for animation. Each easing function
provides a different path to go from an initial value to a final
value. These functions make an excellent companion to the
<code>tween</code> procedure (see <a href="Tweening.html">Tweening</a>). Experiment with them to
figure out which function makes an animation look the best.
</p>
<p>Pro tip: <code>smoothstep</code> provides nice results most of the time and
creates smoother animation than using <code>linear</code>.
</p>
<dl>
<dt id="index-linear">Procedure: <strong>linear</strong> <em>t</em></dt>
</dl>
<dl>
<dt id="index-smoothstep">Procedure: <strong>smoothstep</strong> <em>t</em></dt>
</dl>
<dl>
<dt id="index-ease_002din_002dquad">Procedure: <strong>ease-in-quad</strong> <em>t</em></dt>
</dl>
<dl>
<dt id="index-ease_002dout_002dquad">Procedure: <strong>ease-out-quad</strong> <em>t</em></dt>
</dl>
<dl>
<dt id="index-ease_002din_002dout_002dquad">Procedure: <strong>ease-in-out-quad</strong> <em>t</em></dt>
</dl>
<dl>
<dt id="index-ease_002din_002dcubic">Procedure: <strong>ease-in-cubic</strong> <em>t</em></dt>
</dl>
<dl>
<dt id="index-ease_002dout_002dcubic">Procedure: <strong>ease-out-cubic</strong> <em>t</em></dt>
</dl>
<dl>
<dt id="index-ease_002din_002dout_002dcubic">Procedure: <strong>ease-in-out-cubic</strong> <em>t</em></dt>
</dl>
<dl>
<dt id="index-ease_002din_002dquart">Procedure: <strong>ease-in-quart</strong> <em>t</em></dt>
</dl>
<dl>
<dt id="index-ease_002dout_002dquart">Procedure: <strong>ease-out-quart</strong> <em>t</em></dt>
</dl>
<dl>
<dt id="index-ease_002din_002dout_002dquart">Procedure: <strong>ease-in-out-quart</strong> <em>t</em></dt>
</dl>
<dl>
<dt id="index-ease_002din_002dquint">Procedure: <strong>ease-in-quint</strong> <em>t</em></dt>
</dl>
<dl>
<dt id="index-ease_002dout_002dquint">Procedure: <strong>ease-out-quint</strong> <em>t</em></dt>
</dl>
<dl>
<dt id="index-ease_002din_002dout_002dquint">Procedure: <strong>ease-in-out-quint</strong> <em>t</em></dt>
</dl>
<dl>
<dt id="index-ease_002din_002dsine">Procedure: <strong>ease-in-sine</strong> <em>t</em></dt>
</dl>
<dl>
<dt id="index-ease_002dout_002dsine">Procedure: <strong>ease-out-sine</strong> <em>t</em></dt>
</dl>
<dl>
<dt id="index-ease_002din_002dout_002dsine">Procedure: <strong>ease-in-out-sine</strong> <em>t</em></dt>
</dl>
</body>
</html>
|
