| 12
 3
 4
 5
 6
 7
 8
 9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 
 |  
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import com.sun.j3d.utils.behaviors.mouse.*;
 
/**
 * MouseTranslate is a Java3D behavior object that lets users control the
 * translation (X, Y) of an object via a mouse drag motion with the third
 * mouse button (alt-click on PC). See MouseRotate for similar usage info.
 */
 
public class CustomMouseTranslate extends MouseBehavior {
 
    double x_factor = .02;
    double y_factor = .02;
    Vector3d translation = new Vector3d();
 
    private MouseBehaviorCallback callback = null;
 
    /**
     * Creates a mouse translate behavior given the transform group.
     * @param transformGroup The transformGroup to operate on.
     */
    public CustomMouseTranslate(TransformGroup transformGroup) {
    super(transformGroup);
    }
 
    /**
     * Creates a default translate behavior.
     */
    public CustomMouseTranslate(){
    super(0);
    }
 
    /**
     * Creates a translate behavior.
     * Note that this behavior still needs a transform
     * group to work on (use setTransformGroup(tg)) and
     * the transform group must add this behavior.
     * @param flags
     */
    public CustomMouseTranslate(int flags)
           {
           // Cette méthode est appelée    par 'CustomPickTranslateBehavior'.
           super(flags);
           }
 
    /**
     * Creates a translate behavior that uses AWT listeners and behavior
     * posts rather than WakeupOnAWTEvent.  The behavior is added to the
     * specified Component. A null component can be passed to specify
     * the behavior should use listeners.  Components can then be added
     * to the behavior with the addListener(Component c) method.
     * @param c The Component to add the MouseListener
     * and MouseMotionListener to.
     * @since Java 3D 1.2.1
     */
    public CustomMouseTranslate(Component c) {
    super(c, 0);
    }
 
    /**
     * Creates a translate behavior that uses AWT listeners and behavior
     * posts rather than WakeupOnAWTEvent.  The behaviors is added to
     * the specified Component and works on the given TransformGroup.
     * A null component can be passed to specify the behavior should use
     * listeners.  Components can then be added to the behavior with the
     * addListener(Component c) method.
     * @param c The Component to add the MouseListener and
     * MouseMotionListener to.
     * @param transformGroup The TransformGroup to operate on.
     * @since Java 3D 1.2.1
     */
    public CustomMouseTranslate(Component c, TransformGroup transformGroup) {
    super(c, transformGroup);
    }
 
    /**
     * Creates a translate behavior that uses AWT listeners and behavior
     * posts rather than WakeupOnAWTEvent.  The behavior is added to the
     * specified Component.  A null component can be passed to specify
     * the behavior should use listeners.  Components can then be added to
     * the behavior with the addListener(Component c) method.
     * Note that this behavior still needs a transform
     * group to work on (use setTransformGroup(tg)) and the transform
     * group must add this behavior.
     * @param flags interesting flags (wakeup conditions).
     * @since Java 3D 1.2.1
     */
    public CustomMouseTranslate(Component c, int flags) {
    super(c, flags);
    }
 
    public void initialize() {
    super.initialize();
    if ((flags & INVERT_INPUT) == INVERT_INPUT) {
        invert = true;
        x_factor *= -1;
        y_factor *= -1;
    }
    }
 
    /**
     * Return the x-axis movement multipler.
     **/
    public double getXFactor() {
    return x_factor;
    }
 
    /**
     * Return the y-axis movement multipler.
     **/
    public double getYFactor() {
    return y_factor;
    }
 
    /**
     * Set the x-axis amd y-axis movement multipler with factor.
     **/
    public void setFactor( double factor) {
    x_factor = y_factor = factor;
    }
 
    /**
     * Set the x-axis amd y-axis movement multipler with xFactor and yFactor
     * respectively.
     **/
    public void setFactor( double xFactor, double yFactor) {
    x_factor = xFactor;
    y_factor = yFactor;
    }
 
    public void processStimulus (Enumeration criteria) {
    WakeupCriterion wakeup;
    AWTEvent[] events;
     MouseEvent evt;
//     int id;
//     int dx, dy;
 
    while (criteria.hasMoreElements()) {
        wakeup = (WakeupCriterion) criteria.nextElement();
 
        if (wakeup instanceof WakeupOnAWTEvent) {
        events = ((WakeupOnAWTEvent)wakeup).getAWTEvent();
        if (events.length > 0) {
            evt = (MouseEvent) events[events.length-1];
            doProcess(evt);
        }
        }
 
        else if (wakeup instanceof WakeupOnBehaviorPost) {
        while (true) {
            // access to the queue must be synchronized
            synchronized (mouseq) {
            if (mouseq.isEmpty()) break;
            evt = (MouseEvent)mouseq.remove(0);
            // consolodate MOUSE_DRAG events
            while ((evt.getID() == MouseEvent.MOUSE_DRAGGED) &&
                   !mouseq.isEmpty() &&
                   (((MouseEvent)mouseq.get(0)).getID() ==
                MouseEvent.MOUSE_DRAGGED)) {
                evt = (MouseEvent)mouseq.remove(0);
            }
            }
            doProcess(evt);
        }
        }
 
    }
     wakeupOn(mouseCriterion);
    }
 
 void doProcess(MouseEvent evt) {
    int id;
    int dx, dy;
 
    processMouseEvent(evt);
 
    if (((buttonPress)&&((flags & MANUAL_WAKEUP) == 0)) ||
        ((wakeUp)&&((flags & MANUAL_WAKEUP) != 0))){
        id = evt.getID();
        if ((id == MouseEvent.MOUSE_DRAGGED) &&
        !evt.isAltDown() && !evt.isMetaDown()) {
 
        x = evt.getX();
        y = evt.getY();
 
        dx = x - x_last;
        dy = y - y_last;
 
        if ((!reset) && ((Math.abs(dy) < 50) && (Math.abs(dx) < 50))) {
            //System.out.println("dx " + dx + " dy " + dy);
            transformGroup.getTransform(currXform);
 
            translation.x = dx*x_factor;
            translation.y = -dy*y_factor;
 
            transformX.set(translation);
 
            if (invert) {
            currXform.mul(currXform, transformX);
            } else {
            currXform.mul(transformX, currXform);
            }
 
                                   // Ligne suivante désactivée: l'objet cliqué ne sera pas déplacé.
                                   // Car on ne veut traiter que les clics de souris.
            // transformGroup.setTransform(currXform);
 
            transformChanged (currXform);
 
            if (callback!=null) callback.transformChanged (MouseBehaviorCallback.TRANSLATE, currXform );
 
        }
        else {
            reset = false;
        }
        x_last = x;
        y_last = y;
        }
        else if (id == MouseEvent.MOUSE_PRESSED) {
        x_last = evt.getX();
        y_last = evt.getY();
        }
    }
    }
 
    /**
     * Users can overload this method  which is called every time
     * the Behavior updates the transform
     *
     * Default implementation does nothing
     */
    public void transformChanged (Transform3D transform) 
           {
           // Ici on peut réaliser des actions chaque fois que la scène est modifiée.    
           // System.out.println("*");    
           }
 
    /**
     * The transformChanged method in the callback class will
     * be called every time the transform is updated
     */
    public void setupCallback( MouseBehaviorCallback callback ) {
    this.callback = callback;
    }
} | 
Partager