/*
TUIO Java backend - part of the reacTIVision project
http://reactivision.sourceforge.net/
Copyright (c) 2005-2009 Martin Kaltenbrunner <mkalten@iua.upf.edu>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package TUIO;
/**
* The TuioObject class encapsulates /tuio/2Dobj TUIO objects.
*
* @author Martin Kaltenbrunner
* @version 1.4
*/
public class TuioObject extends TuioContainer {
/**
* The individual symbol ID number that is assigned to each TuioObject.
*/
protected int symbol_id;
/**
* The rotation angle value.
*/
protected float angle;
/**
* The rotation speed value.
*/
protected float rotation_speed;
/**
* The rotation acceleration value.
*/
protected float rotation_accel;
/**
* Defines the ROTATING state.
*/
public static final int TUIO_ROTATING = 5;
/**
* This constructor takes a TuioTime argument and assigns it along with the provided
* Session ID, Symbol ID, X and Y coordinate and angle to the newly created TuioObject.
*
* @param ttime the TuioTime to assign
* @param si the Session ID to assign
* @param sym the Symbol ID to assign
* @param xp the X coordinate to assign
* @param yp the Y coordinate to assign
* @param a the angle to assign
*/
public TuioObject (TuioTime ttime, long si, int sym, float xp, float yp, float a) {
super(ttime, si,xp,yp);
symbol_id = sym;
angle = a;
rotation_speed = 0.0f;
rotation_accel = 0.0f;
}
/**
* This constructor takes the provided Session ID, Symbol ID, X and Y coordinate
* and angle, and assigs these values to the newly created TuioObject.
*
* @param si the Session ID to assign
* @param sym the Symbol ID to assign
* @param xp the X coordinate to assign
* @param yp the Y coordinate to assign
* @param a the angle to assign
*/
public TuioObject (long si, int sym, float xp, float yp, float a) {
super(si,xp,yp);
symbol_id = sym;
angle = angle;
rotation_speed = 0.0f;
rotation_accel = 0.0f;
}
/**
* This constructor takes the atttibutes of the provided TuioObject
* and assigs these values to the newly created TuioObject.
*
* @param tobj the TuioObject to assign
*/
public TuioObject (TuioObject tobj) {
super(tobj);
symbol_id = tobj.getSymbolID();
angle = tobj.getAngle();
rotation_speed = 0.0f;
rotation_accel = 0.0f;
}
/**
* Takes a TuioTime argument and assigns it along with the provided
* X and Y coordinate, angle, X and Y velocity, motion acceleration,
* rotation speed and rotation acceleration to the private TuioObject attributes.
*
* @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
* @param xs the X velocity to assign
* @param ys the Y velocity to assign
* @param rs the rotation velocity to assign
* @param ma the motion acceleration to assign
* @param ra the rotation acceleration to assign
*/
public void update (TuioTime ttime, float xp, float yp, float a, float xs, float ys, float rs, float ma, float ra) {
super.update(ttime,xp,yp,xs,ys,ma);
angle = a;
rotation_speed = rs;
rotation_accel = ra;
if ((rotation_accel!=0) && (state!=TUIO_STOPPED)) state = TUIO_ROTATING;
}
/**
* Assigns the provided X and Y coordinate, angle, X and Y velocity, motion acceleration
* rotation velocity and rotation acceleration to the private TuioContainer attributes.
* The TuioTime time stamp remains unchanged.
*
* @param xp the X coordinate to assign
* @param yp the Y coordinate to assign
* @param a the angle coordinate to assign
* @param xs the X velocity to assign
* @param ys the Y velocity to assign
* @param rs the rotation velocity to assign
* @param ma the motion acceleration to assign
* @param ra the rotation acceleration to assign
*/
public void update (float xp, float yp, float a, float xs, float ys, float rs, float ma, float ra) {
super.update(xp,yp,xs,ys,ma);
angle = a;
rotation_speed = rs;
rotation_accel = ra;
if ((rotation_accel!=0) && (state!=TUIO_STOPPED)) state = TUIO_ROTATING;
}
/**
* 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.lastElement();
super.update(ttime,xp,yp);
TuioTime diffTime = currentTime.subtract(lastPoint.getTuioTime());
float dt = diffTime.getTotalMilliseconds()/1000.0f;
float last_angle = angle;
float last_rotation_speed = rotation_speed;
angle = a;
float da = (this.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;
}
/**
* Takes the atttibutes of the provided TuioObject
* and assigs these values to this TuioObject.
* The TuioTime time stamp of this TuioContainer remains unchanged.
*
* @param tobj the TuioContainer to assign
*/
public void update (TuioObject tobj) {
super.update(tobj);
angle = tobj.getAngle();
rotation_speed = tobj.getRotationSpeed();
rotation_accel = tobj.getRotationAccel();
if ((rotation_accel!=0) && (state!=TUIO_STOPPED)) state = TUIO_ROTATING;
}
/**
* This method is used to calculate the speed and acceleration values of a
* TuioObject with unchanged position and angle.
*
* @param ttime the TuioTime to assign
*/
public void stop (TuioTime ttime) {
update(ttime,xpos,ypos, angle);
}
/**
* Returns the symbol ID of this TuioObject.
* @return the symbol ID of this TuioObject
*/
public int getSymbolID() {
return symbol_id;
}
/**
* Returns the rotation angle of this TuioObject.
* @return the rotation angle of this TuioObject
*/
public float getAngle() {
return angle;
}
/**
* Returns the rotation angle in degrees of this TuioObject.
* @return the rotation angle in degrees of this TuioObject
*/
public float getAngleDegrees() {
return angle/(float)Math.PI*180.0f;
}
/**
* Returns the rotation speed of this TuioObject.
* @return the rotation speed of this TuioObject
*/
public float getRotationSpeed() {
return rotation_speed;
}
/**
* Returns the rotation acceleration of this TuioObject.
* @return the rotation acceleration of this TuioObject
*/
public float getRotationAccel() {
return rotation_accel;
}
/**
* Returns true of this TuioObject is moving.
* @return true of this TuioObject is moving
*/
public boolean isMoving() {
if ((state==TUIO_ACCELERATING) || (state==TUIO_DECELERATING) || (state==TUIO_ROTATING)) return true;
else return false;
}
}