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/*
* $RCSfile$
*
* Copyright (c) 2006 Sun Microsystems, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any
* kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
* EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
* NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
* USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
* DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
* ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
* CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
* REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
* INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed, licensed or
* intended for use in the design, construction, operation or
* maintenance of any nuclear facility.
*
* $Revision$
* $Date$
* $State$
*/
import java.awt.*;
import java.awt.event.*;
import javax.vecmath.*;
import javax.media.j3d.*;
public class ButtonPositionControls extends Panel implements PositionControls, MouseListener {
private final static int STILL=0;
private final static int MOVING_UP=1;
private final static int MOVING_DOWN=2;
private final static int MOVING_LEFT=3;
private final static int MOVING_RIGHT=4;
private final static int MOVING_FORWARD=5;
private final static int MOVING_BACK=6;
// initial mode
private int mode = STILL;
Vector3f position = new Vector3f();
Vector3f orig_position = new Vector3f();
private Button leftB = new Button("Move Left");
private Button rightB = new Button("Move Right");
private Button upB = new Button("Move Up");
private Button downB = new Button("Move Down");
private Button forwardB = new Button("Move Forward");
private Button backwardB = new Button("Move Back");
private Button reset = new Button("Reset");
private InputDevice device;
private float step_rate = 0.0023f; // movement rate per millisecond
private long time_last_state_change = System.currentTimeMillis();
// the constructor arguments are the intitial X, Y, and Z positions
public ButtonPositionControls( float x, float y, float z ) {
// up, down, right, and left movement buttons
Panel panPanel = new Panel();
panPanel.setLayout( new BorderLayout() );
panPanel.add("North", upB);
panPanel.add("East", rightB);
panPanel.add("South", downB);
panPanel.add("West", leftB);
// forward, backward, and reset buttons
Panel p = new Panel();
p.setLayout( new GridLayout(0,1,0,0) );
p.add(forwardB);
p.add(backwardB);
p.add(reset);
// set the initial position
position.x = x;
position.y = y;
position.z = z;
orig_position.set(position);
// add a mouse listener to each button
upB.addMouseListener(this);
downB.addMouseListener(this);
leftB.addMouseListener(this);
rightB.addMouseListener(this);
forwardB.addMouseListener(this);
backwardB.addMouseListener(this);
reset.addMouseListener(this);
this.setLayout( new BorderLayout() );
add("East", p );
add("West", panPanel );
}
public void setDevice ( InputDevice device) {
this.device = device;
}
public void getPosition(Vector3f pos ) {
calculateMotion();
pos.set(position);
}
public void setPosition(Vector3f pos ) {
position.set(pos);
}
public void setStepRate( float stepRate ) {
step_rate = stepRate;
}
private void calculateMotion() {
long current_time = System.currentTimeMillis();
long elapsed_time = current_time - time_last_state_change;
switch(mode) {
case STILL:
break;
case MOVING_LEFT:
position.x = orig_position.x - step_rate*elapsed_time;
break;
case MOVING_RIGHT:
position.x = orig_position.x + step_rate*elapsed_time;
break;
case MOVING_UP:
position.y = orig_position.y + step_rate*elapsed_time;
break;
case MOVING_DOWN:
position.y = orig_position.y - step_rate*elapsed_time;
break;
case MOVING_FORWARD:
position.z = orig_position.z - step_rate*elapsed_time;
break;
case MOVING_BACK:
position.z = orig_position.z + step_rate*elapsed_time;
break;
default:
throw( new RuntimeException("Unknown motion"));
}
}
public void mouseClicked( MouseEvent e ) {
}
public void mouseEntered( MouseEvent e ) {
}
public void mouseExited( MouseEvent e ) {
}
public void mousePressed( MouseEvent e ) {
if (e.getSource()==leftB && mode != MOVING_LEFT) {
time_last_state_change = System.currentTimeMillis();
mode = MOVING_LEFT;
orig_position.set(position);
} else if (e.getSource()==rightB && mode != MOVING_RIGHT) {
time_last_state_change = System.currentTimeMillis();
mode = MOVING_RIGHT;
orig_position.set(position);
} else if (e.getSource()==upB && mode != MOVING_UP) {
time_last_state_change = System.currentTimeMillis();
mode = MOVING_UP;
orig_position.set(position);
} else if (e.getSource()==downB && mode != MOVING_DOWN) {
time_last_state_change = System.currentTimeMillis();
mode = MOVING_DOWN;
orig_position.set(position);
} else if (e.getSource()==forwardB && mode != MOVING_FORWARD) {
time_last_state_change = System.currentTimeMillis();
mode = MOVING_FORWARD;
orig_position.set(position);
} else if (e.getSource()==backwardB && mode != MOVING_BACK) {
time_last_state_change = System.currentTimeMillis();
mode = MOVING_BACK;
orig_position.set(position);
} else if (e.getSource()==reset) {
device.setNominalPositionAndOrientation();
}
}
public void mouseReleased( MouseEvent e ) {
mode = STILL;
}
}
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