private void UpdateStateEyeGaze(int numNearPointersActive, int numFarPointersActive)
{
// Only enable eye gaze as a pointer if there are no other near or far pointers active.
bool isEyeGazePointerActive = numFarPointersActive == 0 && numNearPointersActive == 0;
gazePointerState = isEyeGazePointerActive ?
GazePointerState.GazePointerActive :
GazePointerState.GazePointerInactive;
}
private void UpdateStateEyeGaze(int numNearPointersActive, int numFarPointersActive)
{
// If there are any far pointers active while eye gaze is valid, then
// eye gaze should be disabled.
bool isEyeGazePointerActive = numFarPointersActive == 0;
gazePointerState = isEyeGazePointerActive ?
GazePointerState.GazePointerActive :
GazePointerState.GazePointerInactive;
}
/// <summary>
/// Updates the state machine based on the number of near pointers, the number of far pointers,
/// and whether or not eye gaze is valid.
/// </summary>
public void UpdateState(int numNearPointersActive, int numFarPointersActive, int numFarPointersWithoutCursorActive, bool isEyeGazeValid)
{
if (eyeGazeValid != isEyeGazeValid)
{
activateGazeKeywordIsSet = false;
eyeGazeValid = isEyeGazeValid;
}
bool canGazeCursorShow = numFarPointersActive == 0 && numNearPointersActive == 0;
switch (gazePointerState)
{
case GazePointerState.Initial:
if (!canGazeCursorShow)
{
// There is some pointer other than the gaze pointer in the scene, assume
// this is from a motion controller or articulated hand, and that we should
// hide the gaze pointer
gazePointerState = GazePointerState.GazePointerInactive;
}
break;
case GazePointerState.GazePointerActive:
if (!canGazeCursorShow)
{
activateGazeKeywordIsSet = false;
gazePointerState = GazePointerState.GazePointerInactive;
}
break;
case GazePointerState.GazePointerInactive:
// Go from inactive to active if we say the word "select"
if (activateGazeKeywordIsSet)
{
activateGazeKeywordIsSet = false;
gazePointerState = GazePointerState.GazePointerActive;
}
if (canGazeCursorShow && numFarPointersWithoutCursorActive > 0)
{
activateGazeKeywordIsSet = false;
gazePointerState = GazePointerState.GazePointerActive;
}
break;
default:
break;
}
}
public void UpdateState(int numNearPointersActive, int numFarPointersActive)
{
GazePointerState newState = gazePointerState;
bool isMotionControllerOrHandUp = numFarPointersActive > 0 || numNearPointersActive > 0;
switch (gazePointerState)
{
case GazePointerState.Initial:
if (isMotionControllerOrHandUp)
{
// There is some pointer other than the gaze pointer in the scene, assume
// this is from a motion controller or articulated hand, and that we should
// hide the gaze pointer
newState = GazePointerState.GazePointerInactive;
}
break;
case GazePointerState.GazePointerActive:
if (isMotionControllerOrHandUp)
{
newState = GazePointerState.GazePointerInactive;
activateGazeKeywordIsSet = false;
}
break;
case GazePointerState.GazePointerInactive:
// Go from inactive to active if we say the word "select"
if (activateGazeKeywordIsSet)
{
newState = GazePointerState.GazePointerActive;
activateGazeKeywordIsSet = false;
}
break;
default:
break;
}
gazePointerState = newState;
}
