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/*
/osxptb/trunk/PsychSourceGL/Source/OSX/Eyelink/EyelinkTargetCheck.c
PROJECTS: Eyelink
AUTHORS:
f.w.cornelissen@rug.nl fwc
E.Peters@ai.rug.nl emp
PLATFORMS: Currently only OS X
HISTORY:
15/06/06 fwc Adapted from early alpha version by emp.
TARGET LOCATION:
Eyelink.mexmac resides in:
EyelinkToolbox
*/
#include "PsychEyelink.h"
static char useString[] = "[result, tx, ty] = Eyelink('TargetCheck')";
static char synopsisString[] =
"gets pixel X, Y of target\n"
"returns 1 if visible, 0 if not";
static char seeAlsoString[] = "";
/*
ROUTINE: EYELINKtargetcheck
PURPOSE:
uses INT16 CALLTYPE eyelink_target_check(INT16 FARTYPE *x, INT16 FARTYPE *y);
gets pixel X, Y of target
returns 1 if visible, 0 if not*/
PsychError EyelinkTargetCheck(void)
{
INT16 tx;
INT16 ty;
int result;
//all sub functions should have these two lines
PsychPushHelp(useString, synopsisString, seeAlsoString);
if(PsychIsGiveHelp()){PsychGiveHelp();return(PsychError_none);};
//check to see if the user supplied superfluous arguments
PsychErrorExit(PsychCapNumInputArgs(0));
PsychErrorExit(PsychRequireNumInputArgs(0));
PsychErrorExit(PsychCapNumOutputArgs(3));
// Verify eyelink is up and running
EyelinkSystemIsConnected();
EyelinkSystemIsInitialized();
result = eyelink_target_check(&tx, &ty);
PsychCopyOutDoubleArg(1, TRUE, result);
PsychCopyOutDoubleArg(2, TRUE, (int)tx);
PsychCopyOutDoubleArg(3, TRUE, (int)ty);
return(PsychError_none);
}
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