mirror of
https://github.com/mangosfour/server.git
synced 2025-12-14 16:37:01 +00:00
136c0ba618
Import Recast Navigation as third party dependency Credits go to Mikko Mononen memon at inside dot org
262 lines
No EOL
3.4 KiB
HTML
262 lines
No EOL
3.4 KiB
HTML
<HTML
|
|
><HEAD
|
|
><TITLE
|
|
>SDL_JoystickGetBall</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_JoystickGetButton"
|
|
HREF="sdljoystickgetbutton.html"><LINK
|
|
REL="NEXT"
|
|
TITLE="SDL_JoystickClose"
|
|
HREF="sdljoystickclose.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="sdljoystickgetbutton.html"
|
|
ACCESSKEY="P"
|
|
>Prev</A
|
|
></TD
|
|
><TD
|
|
WIDTH="80%"
|
|
ALIGN="center"
|
|
VALIGN="bottom"
|
|
></TD
|
|
><TD
|
|
WIDTH="10%"
|
|
ALIGN="right"
|
|
VALIGN="bottom"
|
|
><A
|
|
HREF="sdljoystickclose.html"
|
|
ACCESSKEY="N"
|
|
>Next</A
|
|
></TD
|
|
></TR
|
|
></TABLE
|
|
><HR
|
|
ALIGN="LEFT"
|
|
WIDTH="100%"></DIV
|
|
><H1
|
|
><A
|
|
NAME="SDLJOYSTICKGETBALL"
|
|
></A
|
|
>SDL_JoystickGetBall</H1
|
|
><DIV
|
|
CLASS="REFNAMEDIV"
|
|
><A
|
|
NAME="AEN6433"
|
|
></A
|
|
><H2
|
|
>Name</H2
|
|
>SDL_JoystickGetBall -- Get relative trackball motion</DIV
|
|
><DIV
|
|
CLASS="REFSYNOPSISDIV"
|
|
><A
|
|
NAME="AEN6436"
|
|
></A
|
|
><H2
|
|
>Synopsis</H2
|
|
><DIV
|
|
CLASS="FUNCSYNOPSIS"
|
|
><A
|
|
NAME="AEN6437"
|
|
></A
|
|
><P
|
|
></P
|
|
><PRE
|
|
CLASS="FUNCSYNOPSISINFO"
|
|
>#include "SDL.h"</PRE
|
|
><P
|
|
><CODE
|
|
><CODE
|
|
CLASS="FUNCDEF"
|
|
>int <B
|
|
CLASS="FSFUNC"
|
|
>SDL_JoystickGetBall</B
|
|
></CODE
|
|
>(SDL_Joystick *joystick, int ball, int *dx, int *dy);</CODE
|
|
></P
|
|
><P
|
|
></P
|
|
></DIV
|
|
></DIV
|
|
><DIV
|
|
CLASS="REFSECT1"
|
|
><A
|
|
NAME="AEN6443"
|
|
></A
|
|
><H2
|
|
>Description</H2
|
|
><P
|
|
>Get the <TT
|
|
CLASS="PARAMETER"
|
|
><I
|
|
>ball</I
|
|
></TT
|
|
> axis change.</P
|
|
><P
|
|
>Trackballs can only return relative motion since the last call to <TT
|
|
CLASS="FUNCTION"
|
|
>SDL_JoystickGetBall</TT
|
|
>, these motion deltas a placed into <TT
|
|
CLASS="PARAMETER"
|
|
><I
|
|
>dx</I
|
|
></TT
|
|
> and <TT
|
|
CLASS="PARAMETER"
|
|
><I
|
|
>dy</I
|
|
></TT
|
|
>.</P
|
|
></DIV
|
|
><DIV
|
|
CLASS="REFSECT1"
|
|
><A
|
|
NAME="AEN6451"
|
|
></A
|
|
><H2
|
|
>Return Value</H2
|
|
><P
|
|
>Returns <SPAN
|
|
CLASS="RETURNVALUE"
|
|
>0</SPAN
|
|
> on success or <SPAN
|
|
CLASS="RETURNVALUE"
|
|
>-1</SPAN
|
|
> on failure</P
|
|
></DIV
|
|
><DIV
|
|
CLASS="REFSECT1"
|
|
><A
|
|
NAME="AEN6456"
|
|
></A
|
|
><H2
|
|
>Examples</H2
|
|
><P
|
|
><PRE
|
|
CLASS="PROGRAMLISTING"
|
|
>int delta_x, delta_y;
|
|
SDL_Joystick *joy;
|
|
.
|
|
.
|
|
.
|
|
SDL_JoystickUpdate();
|
|
if(SDL_JoystickGetBall(joy, 0, &delta_x, &delta_y)==-1)
|
|
printf("TrackBall Read Error!\n");
|
|
printf("Trackball Delta- X:%d, Y:%d\n", delta_x, delta_y);</PRE
|
|
></P
|
|
></DIV
|
|
><DIV
|
|
CLASS="REFSECT1"
|
|
><A
|
|
NAME="AEN6460"
|
|
></A
|
|
><H2
|
|
>See Also</H2
|
|
><P
|
|
><A
|
|
HREF="sdljoysticknumballs.html"
|
|
><TT
|
|
CLASS="FUNCTION"
|
|
>SDL_JoystickNumBalls</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="sdljoystickgetbutton.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="sdljoystickclose.html"
|
|
ACCESSKEY="N"
|
|
>Next</A
|
|
></TD
|
|
></TR
|
|
><TR
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="left"
|
|
VALIGN="top"
|
|
>SDL_JoystickGetButton</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_JoystickClose</TD
|
|
></TR
|
|
></TABLE
|
|
></DIV
|
|
></BODY
|
|
></HTML
|
|
> |