| 1 | /* $Id: glut_joy.c,v 1.2 2000-02-09 08:46:13 jeroen Exp $ */
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| 2 | /* Copyright (c) Mark J. Kilgard, 1997, 1998. */
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| 3 |
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| 4 | /* This program is freely distributable without licensing fees
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| 5 | and is provided without guarantee or warrantee expressed or
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| 6 | implied. This program is -not- in the public domain. */
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| 7 |
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| 8 | #ifdef _WIN32
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| 9 | #include <windows.h>
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| 10 | #include <mmsystem.h> /* Win32 Multimedia API header. */
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| 11 | #endif
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| 12 |
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| 13 | #include "glutint.h"
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| 14 |
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| 15 | /* CENTRY */
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| 16 | void APIENTRY
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| 17 | glutJoystickFunc(GLUTjoystickCB joystickFunc, int pollInterval)
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| 18 | {
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| 19 | #ifdef _WIN32
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| 20 | if (joystickFunc && (pollInterval > 0)) {
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| 21 | if (__glutCurrentWindow->entryState == WM_SETFOCUS) {
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| 22 | MMRESULT result;
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| 23 |
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| 24 | /* Capture joystick focus if current window has
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| 25 | focus now. */
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| 26 | result = joySetCapture(__glutCurrentWindow->win,
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| 27 | JOYSTICKID1, 0, TRUE);
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| 28 | if (result == JOYERR_NOERROR) {
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| 29 | (void) joySetThreshold(JOYSTICKID1, pollInterval);
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| 30 | }
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| 31 | }
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| 32 | __glutCurrentWindow->joyPollInterval = pollInterval;
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| 33 | } else {
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| 34 | /* Release joystick focus if current window has
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| 35 | focus now. */
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| 36 | if (__glutCurrentWindow->joystick
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| 37 | && (__glutCurrentWindow->joyPollInterval > 0)
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| 38 | && (__glutCurrentWindow->entryState == WM_SETFOCUS)) {
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| 39 | (void) joyReleaseCapture(JOYSTICKID1);
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| 40 | }
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| 41 | __glutCurrentWindow->joyPollInterval = 0;
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| 42 | }
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| 43 | __glutCurrentWindow->joystick = joystickFunc;
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| 44 | #else
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| 45 | /* XXX No support currently for X11 joysticks. */
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| 46 | #endif
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| 47 | }
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| 48 |
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| 49 | void APIENTRY
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| 50 | glutForceJoystickFunc(void)
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| 51 | {
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| 52 | #ifdef _WIN32
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| 53 | if (__glutCurrentWindow->joystick) {
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| 54 | JOYINFOEX jix;
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| 55 | MMRESULT res;
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| 56 | int x, y, z;
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| 57 |
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| 58 | /* Poll the joystick. */
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| 59 | jix.dwSize = sizeof(jix);
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| 60 | jix.dwFlags = JOY_RETURNALL;
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| 61 | res = joyGetPosEx(JOYSTICKID1,&jix);
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| 62 | if (res == JOYERR_NOERROR) {
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| 63 |
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| 64 | /* Convert to int for scaling. */
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| 65 | x = jix.dwXpos;
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| 66 | y = jix.dwYpos;
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| 67 | z = jix.dwZpos;
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| 68 |
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| 69 | #define SCALE(v) ((int) ((v - 32767)/32.768))
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| 70 |
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| 71 | __glutCurrentWindow->joystick(jix.dwButtons,
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| 72 | SCALE(x), SCALE(y), SCALE(z));
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| 73 | }
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| 74 | }
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| 75 | #else
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| 76 | /* XXX No support currently for X11 joysticks. */
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| 77 | #endif
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| 78 | }
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| 79 |
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| 80 | /* ENDCENTRY */
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