Mercurial > sdl-ios-xcode
annotate docs/html/sdljoystickgetaxis.html @ 701:aaf3b8af6616
Date: Sat, 30 Aug 2003 16:28:10 +0300
From: "Mike Gorchak"
Subject: Re: SDL 1.2.6
- minor changes about shared library building under QNX6 into README.QNX
- added forgotten libSDLmain.a into distribution, SDL.qpg.in
- added header guards to the all headers.
- fixed fullscreen double buffered mode.
- fixed Photon crashes after/during using fullscreen OpenGL modes.
- added GL_MakeCurrent function.
- added SDL_VIDEOEXPOSE event, when OpenGL window have been resized
- added more HAVE_OPENGL checks to avoid dead code compilation without using OpenGL
- finished code reorganization (began into previous patches).
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sat, 30 Aug 2003 17:07:59 +0000 |
parents | e5bc29de3f0a |
children | 355632dca928 |
rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_JoystickGetAxis</TITLE | |
5 ><META | |
6 NAME="GENERATOR" | |
55
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.64 |
0 | 8 "><LINK |
9 REL="HOME" | |
10 TITLE="SDL Library Documentation" | |
11 HREF="index.html"><LINK | |
12 REL="UP" | |
13 TITLE="Joystick" | |
14 HREF="joystick.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_JoystickUpdate" | |
17 HREF="sdljoystickupdate.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_JoystickGetHat" | |
20 HREF="sdljoystickgethat.html"></HEAD | |
21 ><BODY | |
22 CLASS="REFENTRY" | |
23 BGCOLOR="#FFF8DC" | |
24 TEXT="#000000" | |
25 LINK="#0000ee" | |
26 VLINK="#551a8b" | |
27 ALINK="#ff0000" | |
28 ><DIV | |
29 CLASS="NAVHEADER" | |
30 ><TABLE | |
31 WIDTH="100%" | |
32 BORDER="0" | |
33 CELLPADDING="0" | |
34 CELLSPACING="0" | |
35 ><TR | |
36 ><TH | |
37 COLSPAN="3" | |
38 ALIGN="center" | |
39 >SDL Library Documentation</TH | |
40 ></TR | |
41 ><TR | |
42 ><TD | |
43 WIDTH="10%" | |
44 ALIGN="left" | |
45 VALIGN="bottom" | |
46 ><A | |
47 HREF="sdljoystickupdate.html" | |
48 >Prev</A | |
49 ></TD | |
50 ><TD | |
51 WIDTH="80%" | |
52 ALIGN="center" | |
53 VALIGN="bottom" | |
54 ></TD | |
55 ><TD | |
56 WIDTH="10%" | |
57 ALIGN="right" | |
58 VALIGN="bottom" | |
59 ><A | |
60 HREF="sdljoystickgethat.html" | |
61 >Next</A | |
62 ></TD | |
63 ></TR | |
64 ></TABLE | |
65 ><HR | |
66 ALIGN="LEFT" | |
67 WIDTH="100%"></DIV | |
68 ><H1 | |
69 ><A | |
70 NAME="SDLJOYSTICKGETAXIS" | |
71 >SDL_JoystickGetAxis</A | |
72 ></H1 | |
73 ><DIV | |
74 CLASS="REFNAMEDIV" | |
75 ><A | |
181
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76 NAME="AEN5932" |
0 | 77 ></A |
78 ><H2 | |
79 >Name</H2 | |
80 >SDL_JoystickGetAxis -- Get the current state of an axis</DIV | |
81 ><DIV | |
82 CLASS="REFSYNOPSISDIV" | |
83 ><A | |
181
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84 NAME="AEN5935" |
0 | 85 ></A |
86 ><H2 | |
87 >Synopsis</H2 | |
88 ><DIV | |
89 CLASS="FUNCSYNOPSIS" | |
90 ><A | |
181
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91 NAME="AEN5936" |
0 | 92 ></A |
93 ><P | |
94 ></P | |
95 ><PRE | |
96 CLASS="FUNCSYNOPSISINFO" | |
97 >#include "SDL.h"</PRE | |
98 ><P | |
99 ><CODE | |
100 ><CODE | |
101 CLASS="FUNCDEF" | |
102 >Sint16 <B | |
103 CLASS="FSFUNC" | |
104 >SDL_JoystickGetAxis</B | |
105 ></CODE | |
106 >(SDL_Joystick *joystick, int axis);</CODE | |
107 ></P | |
108 ><P | |
109 ></P | |
110 ></DIV | |
111 ></DIV | |
112 ><DIV | |
113 CLASS="REFSECT1" | |
114 ><A | |
181
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115 NAME="AEN5942" |
0 | 116 ></A |
117 ><H2 | |
118 >Description</H2 | |
119 ><P | |
120 ><TT | |
121 CLASS="FUNCTION" | |
122 >SDL_JoystickGetAxis</TT | |
123 > returns the current state of the given <TT | |
124 CLASS="PARAMETER" | |
125 ><I | |
126 >axis</I | |
127 ></TT | |
128 > on the given <TT | |
129 CLASS="PARAMETER" | |
130 ><I | |
131 >joystick</I | |
132 ></TT | |
133 >.</P | |
134 ><P | |
135 >On most modern joysticks the X axis is usually represented by <TT | |
136 CLASS="PARAMETER" | |
137 ><I | |
138 >axis</I | |
139 ></TT | |
140 > 0 and the Y axis by <TT | |
141 CLASS="PARAMETER" | |
142 ><I | |
143 >axis</I | |
144 ></TT | |
145 > 1. The value returned by <TT | |
146 CLASS="FUNCTION" | |
147 >SDL_JoystickGetAxis</TT | |
148 > is a signed integer (-32768 to 32768) representing the current position of the <TT | |
149 CLASS="PARAMETER" | |
150 ><I | |
151 >axis</I | |
152 ></TT | |
153 >, it maybe necessary to impose certain tolerances on these values to account for jitter. It is worth noting that some joysticks use axes 2 and 3 for extra buttons.</P | |
154 ></DIV | |
155 ><DIV | |
156 CLASS="REFSECT1" | |
157 ><A | |
181
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158 NAME="AEN5953" |
0 | 159 ></A |
160 ><H2 | |
161 >Return Value</H2 | |
162 ><P | |
163 >Returns a 16-bit signed integer representing the current position of the <TT | |
164 CLASS="PARAMETER" | |
165 ><I | |
166 >axis</I | |
167 ></TT | |
168 >.</P | |
169 ></DIV | |
170 ><DIV | |
171 CLASS="REFSECT1" | |
172 ><A | |
181
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173 NAME="AEN5957" |
0 | 174 ></A |
175 ><H2 | |
176 >Examples</H2 | |
177 ><P | |
178 ><PRE | |
179 CLASS="PROGRAMLISTING" | |
180 >Sint16 x_move, y_move; | |
181 SDL_Joystick *joy1; | |
182 . | |
183 . | |
184 x_move=SDL_JoystickGetAxis(joy1, 0); | |
185 y_move=SDL_JoystickGetAxis(joy1, 1);</PRE | |
186 ></P | |
187 ></DIV | |
188 ><DIV | |
189 CLASS="REFSECT1" | |
190 ><A | |
181
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191 NAME="AEN5961" |
0 | 192 ></A |
193 ><H2 | |
194 >See Also</H2 | |
195 ><P | |
196 ><A | |
197 HREF="sdljoysticknumaxes.html" | |
198 ><TT | |
199 CLASS="FUNCTION" | |
200 >SDL_JoystickNumAxes</TT | |
201 ></A | |
202 ></P | |
203 ></DIV | |
204 ><DIV | |
205 CLASS="NAVFOOTER" | |
206 ><HR | |
207 ALIGN="LEFT" | |
208 WIDTH="100%"><TABLE | |
209 WIDTH="100%" | |
210 BORDER="0" | |
211 CELLPADDING="0" | |
212 CELLSPACING="0" | |
213 ><TR | |
214 ><TD | |
215 WIDTH="33%" | |
216 ALIGN="left" | |
217 VALIGN="top" | |
218 ><A | |
219 HREF="sdljoystickupdate.html" | |
220 >Prev</A | |
221 ></TD | |
222 ><TD | |
223 WIDTH="34%" | |
224 ALIGN="center" | |
225 VALIGN="top" | |
226 ><A | |
227 HREF="index.html" | |
228 >Home</A | |
229 ></TD | |
230 ><TD | |
231 WIDTH="33%" | |
232 ALIGN="right" | |
233 VALIGN="top" | |
234 ><A | |
235 HREF="sdljoystickgethat.html" | |
236 >Next</A | |
237 ></TD | |
238 ></TR | |
239 ><TR | |
240 ><TD | |
241 WIDTH="33%" | |
242 ALIGN="left" | |
243 VALIGN="top" | |
244 >SDL_JoystickUpdate</TD | |
245 ><TD | |
246 WIDTH="34%" | |
247 ALIGN="center" | |
248 VALIGN="top" | |
249 ><A | |
250 HREF="joystick.html" | |
251 >Up</A | |
252 ></TD | |
253 ><TD | |
254 WIDTH="33%" | |
255 ALIGN="right" | |
256 VALIGN="top" | |
257 >SDL_JoystickGetHat</TD | |
258 ></TR | |
259 ></TABLE | |
260 ></DIV | |
261 ></BODY | |
262 ></HTML | |
263 > |