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⇤ ← Revision 1 as of 2010-03-17 21:34:56
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Comment: create page, add content (Rev 5540)
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| ||'''axis'''||the axis indices^;^ start^s^ at index 0|| | ||'''axis'''||^the axis to query; the axis indices start at index 0; see [[#Remarks|Remarks]] for details|| |
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| *<<BR>>Returns a 16-bit signed integer representing the current position of the axis.<<BR>>* |
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| You can add your code example here | Sint16 x_move, y_move; SDL_Joystick *joy1; . . x_move=SDL_JoystickGetAxis(joy1, 0); y_move=SDL_JoystickGetAxis(joy1, 1); |
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| ''You can add useful comments here'' | *<<BR>>On most modern joysticks the X axis is usually represented by '''axis''' 0 and the Y axis by '''axis''' 1. The value returned by [[SDL_JoystickGetAxis]]() is a signed integer (-32768 to 32767) representing the current position of the axis. It may be necessary to impose certain tolerances on these values to account for jitter. Some joysticks use axes 2 and 3 for extra buttons.<<BR>>* |
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| .[[SDL_JoystickNumAxes]] * |
DRAFT |
SDL_JoystickGetAxis
Use this function to get the current state of an axis control on a joystick.
Contents
Syntax
Sint16 SDL_JoystickGetAxis(SDL_Joystick* joystick,
int axis)
Function Parameters
joystick |
a pointer to a structure containing joystick information ??? |
axis |
^the axis to query; the axis indices start at index 0; see Remarks for details |
Return Value
*
Returns a 16-bit signed integer representing the current position of the axis.
*
The state is a value ranging from -32768 to 32767. green
Code Examples
Sint16 x_move, y_move;
SDL_Joystick *joy1;
.
.
x_move=SDL_JoystickGetAxis(joy1, 0);
y_move=SDL_JoystickGetAxis(joy1, 1);
Remarks
*
On most modern joysticks the X axis is usually represented by axis 0 and the Y axis by axis 1. The value returned by SDL_JoystickGetAxis() is a signed integer (-32768 to 32767) representing the current position of the axis. It may be necessary to impose certain tolerances on these values to account for jitter.
Some joysticks use axes 2 and 3 for extra buttons.
*
