void SbButtonReleaseEvent(int button, void *appdata)
{
SpaceballControlStruct *scs = (SpaceballControlStruct *)appdata;
SpaceballAppDataStruct *ads = (SpaceballAppDataStruct *)(scs->appData);
static char *BeepString = "CcC";
switch(button)
{
case SI_PICK_BUTTON:
{
/*
* Reset view and center of rotation.
*
* We do the "pick" button reset here, on release, so we
* get less motion artifact, since the button is on the
* ball itself for the Spaceball 2003.
*/
float *appCTM = (ads->CTM);
ResetWidgetView( (float(*)[4])appCTM, ads->center);
SiBeep(scs->devHdl, BeepString);
ads->redraw = TRUE;
ads->centerRot.Coord[0] = Spw_WindowWidth / (float)2.0;
ads->centerRot.Coord[1] = Spw_WindowHeight / (float)2.0;
}
break;
default:
break;
}
} /* end of SbButtonReleaseEvent */
// SpaceBallState():
XCALL_ (int) SpaceBallState( long version, GlobalFunc *global,
void *local, void *serverData, bool new_state ) {
if( version != LWLAYOUTGENERIC_VERSION )
return AFUNC_BADVERSION;
if( new_state == enable_spaceball )
return AFUNC_OK;
if( new_state == true ) {
SiBeep( hdl, "aAaAc" );
} else {
SiBeep( hdl, "cAcAf" );
}
enable_spaceball = new_state;
return AFUNC_OK;
}
// Windows code to talk to Spaceball device
static void vmd_setupwin32spaceball(wgldata *glwsrv) {
SiOpenData oData;
enum SpwRetVal res;
// init the sball pointer to NULL by default, used to determine if we
// had a healthy init later on.
glwsrv->sball = NULL;
switch (SiInitialize()) {
case SPW_NO_ERROR:
break;
case SPW_DLL_LOAD_ERROR:
msgInfo << "Spaceball driver not installed. Spaceball interface disabled." << sendmsg;
return;
default:
msgInfo << "Spaceball did not initialize properly. Spaceball interface disabled." << sendmsg;
return;
}
SiOpenWinInit(&oData, glwsrv->hWnd); // init win platform data
SiSetUiMode(glwsrv->sball, SI_UI_ALL_CONTROLS); // config softbutton display
// actually start a connection to the device now that the UI mode
// and window system data are setup.
glwsrv->sball = SiOpen("VMD", SI_ANY_DEVICE, SI_NO_MASK, SI_EVENT, &oData);
if ((glwsrv->sball == NULL) || (glwsrv->sball == SI_NO_HANDLE)) {
SiTerminate(); // shutdown spaceware input library
msgInfo << "Spaceball is unresponsive. Spaceball interface disabled." << sendmsg;
glwsrv->sball = NULL; // NULL out the handle for sure.
return;
}
res = SiBeep(glwsrv->sball, "CcCc"); // beep the spaceball
if ((glwsrv->sball != NULL) && (glwsrv->sball != SI_NO_HANDLE))
msgInfo << "Spaceball found, software interface initialized." << sendmsg;
}
void
SbButtonPressEvent(int button, void *appdata)
{
SpaceballControlStruct *scs = (SpaceballControlStruct *)appdata;
/*
* C - 3/16 sec delay
* c - 3/16 sec tone
* This is done in case the server should bunch our beep events
* together, we'll still get our beeps.
*/
static char *BeepString = "CcC";
switch(button)
{
case 1:
scs->sbAllowTranslation = !scs->sbAllowTranslation;
if (scs->sbAllowTranslation == TRUE)
{
SiBeep(scs->devHdl, BeepString);
}
/* We don't want both trans and rotate off at the same time! */
if (scs->sbAllowRotation == FALSE && scs->sbAllowRotation == FALSE)
{
scs->sbAllowRotation = TRUE;
}
break;
case 2:
scs->sbAllowRotation = !scs->sbAllowRotation;
if (scs->sbAllowRotation == TRUE)
{
SiBeep(scs->devHdl, BeepString);
}
/* We don't want both trans and rotate off at the same time! */
if (scs->sbAllowRotation == FALSE && scs->sbAllowRotation == FALSE)
{
scs->sbAllowTranslation = TRUE;
}
break;
case 3:
scs->sbDominant = !scs->sbDominant;
if (scs->sbDominant == TRUE)
SiBeep(scs->devHdl, BeepString);
break;
case 5:
scs->sbScale /= (float)2.0;
SiBeep(scs->devHdl, BeepString);
break;
case 6:
scs->sbScale *= (float)2.0;
SiBeep(scs->devHdl, BeepString);
break;
case 7:
scs->sbScale = (float)1.0;
scs->sbDominant = FALSE;
scs->sbAllowTranslation = TRUE;
scs->sbAllowRotation = TRUE;
SiBeep(scs->devHdl, BeepString);
break;
case 8:
SiRezero(scs->devHdl);
SiBeep(scs->devHdl, BeepString);
break;
default:
break;
}
}