/**
* Takes a TuioTime argument and assigns it along with the provided
* X and Y coordinate to the private TuioContainer attributes.
* The speed and accleration values are calculated accordingly.
*
* @param ttime the TuioTime to assign
* @param xp the X coordinate to assign
* @param yp the Y coordinate to assign
*/
public new void update(TuioTime ttime, float xp, float yp)
{
TuioPoint lastPoint = path[path.Count - 1];
base.update(ttime, xp, yp);
TuioTime diffTime = currentTime - lastPoint.getTuioTime();
float dt = diffTime.getTotalMilliseconds() / 1000.0f;
float dx = this.xpos - lastPoint.getX();
float dy = this.ypos - lastPoint.getY();
float dist = (float)Math.Sqrt(dx * dx + dy * dy);
float last_motion_speed = this.motion_speed;
this.x_speed = dx / dt;
this.y_speed = dy / dt;
this.motion_speed = dist / dt;
this.motion_accel = (motion_speed - last_motion_speed) / dt;
path.Add(new TuioPoint(currentTime, xpos, ypos));
if (motion_accel > 0)
{
state = TUIO_ACCELERATING;
}
else if (motion_accel < 0)
{
state = TUIO_DECELERATING;
}
else
{
state = TUIO_STOPPED;
}
}
/**
* This constructor takes a TuioPoint argument and sets its coordinate attributes
* to the coordinates of the provided TuioPoint and its time stamp to the current session time.
*
* @param tpoint the TuioPoint to assign
*/
public TuioPoint(TuioPoint tpoint)
{
xpos = tpoint.getX();
ypos = tpoint.getY();
currentTime = TuioTime.getSessionTime();
startTime = new TuioTime(currentTime);
}
/**
* Takes a TuioTime argument and assigns it along with the provided
* X and Y coordinate and angle to the private TuioObject attributes.
* The speed and accleration values are calculated accordingly.
*
* @param ttime the TuioTime to assign
* @param xp the X coordinate to assign
* @param yp the Y coordinate to assign
* @param a the angle coordinate to assign
*/
public void update(TuioTime ttime, float xp, float yp, float a)
{
TuioPoint lastPoint = path[path.Count - 1];
base.update(ttime, xp, yp);
TuioTime diffTime = currentTime - lastPoint.getTuioTime();
float dt = diffTime.getTotalMilliseconds() / 1000.0f;
float last_angle = angle;
float last_rotation_speed = rotation_speed;
angle = a;
float da = (angle - last_angle) / (2.0f * (float)Math.PI);
if (da > 0.75f)
{
da -= 1.0f;
}
else if (da < -0.75f)
{
da += 1.0f;
}
rotation_speed = da / dt;
rotation_accel = (rotation_speed - last_rotation_speed) / dt;
if ((rotation_accel != 0) && (state != TUIO_STOPPED))
{
state = TUIO_ROTATING;
}
}
/**
* Returns the angle in degrees to the provided TuioPoint
*
* @param tpoint the distant TuioPoint
* @return the angle in degrees to the provided TuioPoint
*/
public float getAngleDegrees(TuioPoint tpoint)
{
return((getAngle(tpoint) / (float)Math.PI) * 180.0f);
}
/**
* Returns the angle to the provided TuioPoint
*
* @param tpoint the distant TuioPoint
* @return the angle to the provided TuioPoint
*/
public float getAngle(TuioPoint tpoint)
{
return(getAngle(tpoint.getX(), tpoint.getY()));
}
/**
* Returns the distance to the provided TuioPoint
*
* @param tpoint the distant TuioPoint
* @return the distance to the provided TuioPoint
*/
public float getDistance(TuioPoint tpoint)
{
return(getDistance(tpoint.getX(), tpoint.getY()));
}
/**
* Takes a TuioPoint argument and updates its coordinate attributes
* to the coordinates of the provided TuioPoint and leaves its time stamp unchanged.
*
* @param tpoint the TuioPoint to assign
*/
public void update(TuioPoint tpoint)
{
xpos = tpoint.getX();
ypos = tpoint.getY();
}
