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authorJesse Hall <jessehall@google.com>2012-07-23 10:12:30 -0700
committerandroid code review <noreply-gerritcodereview@google.com>2012-07-23 10:12:30 -0700
commit2b3a42e7d0b441f71fc2e2b07269dd1f8151c977 (patch)
treeded6ee18c4e1f33df235e53615a6d65e2d64f4ef /distrib/sdl-1.2.15/docs/html/sdljoystickgetaxis.html
parent3dcbebfd43e409c3bbff7fc79288e40666a947fd (diff)
parent9682c8870b8ff5e4ac2e4c70b759f791c6f38c1f (diff)
downloadexternal_qemu-2b3a42e7d0b441f71fc2e2b07269dd1f8151c977.zip
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Merge changes I505c4aea,I2ae0529c
* changes: Import SDL release-1.2.15 Handle SDL windows with BGRA color
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+<HTML
+><HEAD
+><TITLE
+>SDL_JoystickGetAxis</TITLE
+><META
+NAME="GENERATOR"
+CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
+"><LINK
+REL="HOME"
+TITLE="SDL Library Documentation"
+HREF="index.html"><LINK
+REL="UP"
+TITLE="Joystick"
+HREF="joystick.html"><LINK
+REL="PREVIOUS"
+TITLE="SDL_JoystickUpdate"
+HREF="sdljoystickupdate.html"><LINK
+REL="NEXT"
+TITLE="SDL_JoystickGetHat"
+HREF="sdljoystickgethat.html"></HEAD
+><BODY
+CLASS="REFENTRY"
+BGCOLOR="#FFF8DC"
+TEXT="#000000"
+LINK="#0000ee"
+VLINK="#551a8b"
+ALINK="#ff0000"
+><DIV
+CLASS="NAVHEADER"
+><TABLE
+SUMMARY="Header navigation table"
+WIDTH="100%"
+BORDER="0"
+CELLPADDING="0"
+CELLSPACING="0"
+><TR
+><TH
+COLSPAN="3"
+ALIGN="center"
+>SDL Library Documentation</TH
+></TR
+><TR
+><TD
+WIDTH="10%"
+ALIGN="left"
+VALIGN="bottom"
+><A
+HREF="sdljoystickupdate.html"
+ACCESSKEY="P"
+>Prev</A
+></TD
+><TD
+WIDTH="80%"
+ALIGN="center"
+VALIGN="bottom"
+></TD
+><TD
+WIDTH="10%"
+ALIGN="right"
+VALIGN="bottom"
+><A
+HREF="sdljoystickgethat.html"
+ACCESSKEY="N"
+>Next</A
+></TD
+></TR
+></TABLE
+><HR
+ALIGN="LEFT"
+WIDTH="100%"></DIV
+><H1
+><A
+NAME="SDLJOYSTICKGETAXIS"
+></A
+>SDL_JoystickGetAxis</H1
+><DIV
+CLASS="REFNAMEDIV"
+><A
+NAME="AEN6320"
+></A
+><H2
+>Name</H2
+>SDL_JoystickGetAxis&nbsp;--&nbsp;Get the current state of an axis</DIV
+><DIV
+CLASS="REFSYNOPSISDIV"
+><A
+NAME="AEN6323"
+></A
+><H2
+>Synopsis</H2
+><DIV
+CLASS="FUNCSYNOPSIS"
+><A
+NAME="AEN6324"
+></A
+><P
+></P
+><PRE
+CLASS="FUNCSYNOPSISINFO"
+>#include "SDL.h"</PRE
+><P
+><CODE
+><CODE
+CLASS="FUNCDEF"
+>Sint16 <B
+CLASS="FSFUNC"
+>SDL_JoystickGetAxis</B
+></CODE
+>(SDL_Joystick *joystick, int axis);</CODE
+></P
+><P
+></P
+></DIV
+></DIV
+><DIV
+CLASS="REFSECT1"
+><A
+NAME="AEN6330"
+></A
+><H2
+>Description</H2
+><P
+><TT
+CLASS="FUNCTION"
+>SDL_JoystickGetAxis</TT
+> returns the current state of the given <TT
+CLASS="PARAMETER"
+><I
+>axis</I
+></TT
+> on the given <TT
+CLASS="PARAMETER"
+><I
+>joystick</I
+></TT
+>.</P
+><P
+>On most modern joysticks the X axis is usually represented by <TT
+CLASS="PARAMETER"
+><I
+>axis</I
+></TT
+> 0 and the Y axis by <TT
+CLASS="PARAMETER"
+><I
+>axis</I
+></TT
+> 1. The value returned by <TT
+CLASS="FUNCTION"
+>SDL_JoystickGetAxis</TT
+> is a signed integer (-32768 to 32768) representing the current position of the <TT
+CLASS="PARAMETER"
+><I
+>axis</I
+></TT
+>, 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
+></DIV
+><DIV
+CLASS="REFSECT1"
+><A
+NAME="AEN6341"
+></A
+><H2
+>Return Value</H2
+><P
+>Returns a 16-bit signed integer representing the current position of the <TT
+CLASS="PARAMETER"
+><I
+>axis</I
+></TT
+>.</P
+></DIV
+><DIV
+CLASS="REFSECT1"
+><A
+NAME="AEN6345"
+></A
+><H2
+>Examples</H2
+><P
+><PRE
+CLASS="PROGRAMLISTING"
+>Sint16 x_move, y_move;
+SDL_Joystick *joy1;
+.
+.
+x_move=SDL_JoystickGetAxis(joy1, 0);
+y_move=SDL_JoystickGetAxis(joy1, 1);</PRE
+></P
+></DIV
+><DIV
+CLASS="REFSECT1"
+><A
+NAME="AEN6349"
+></A
+><H2
+>See Also</H2
+><P
+><A
+HREF="sdljoysticknumaxes.html"
+><TT
+CLASS="FUNCTION"
+>SDL_JoystickNumAxes</TT
+></A
+></P
+></DIV
+><DIV
+CLASS="NAVFOOTER"
+><HR
+ALIGN="LEFT"
+WIDTH="100%"><TABLE
+SUMMARY="Footer navigation table"
+WIDTH="100%"
+BORDER="0"
+CELLPADDING="0"
+CELLSPACING="0"
+><TR
+><TD
+WIDTH="33%"
+ALIGN="left"
+VALIGN="top"
+><A
+HREF="sdljoystickupdate.html"
+ACCESSKEY="P"
+>Prev</A
+></TD
+><TD
+WIDTH="34%"
+ALIGN="center"
+VALIGN="top"
+><A
+HREF="index.html"
+ACCESSKEY="H"
+>Home</A
+></TD
+><TD
+WIDTH="33%"
+ALIGN="right"
+VALIGN="top"
+><A
+HREF="sdljoystickgethat.html"
+ACCESSKEY="N"
+>Next</A
+></TD
+></TR
+><TR
+><TD
+WIDTH="33%"
+ALIGN="left"
+VALIGN="top"
+>SDL_JoystickUpdate</TD
+><TD
+WIDTH="34%"
+ALIGN="center"
+VALIGN="top"
+><A
+HREF="joystick.html"
+ACCESSKEY="U"
+>Up</A
+></TD
+><TD
+WIDTH="33%"
+ALIGN="right"
+VALIGN="top"
+>SDL_JoystickGetHat</TD
+></TR
+></TABLE
+></DIV
+></BODY
+></HTML
+> \ No newline at end of file