/*---------------------*/
/* Ex81Behavior.java   */
/*---------------------*/
import java.awt.event.*;
import java.awt.AWTEvent;
import java.util.Enumeration;               //Enumeration
import javax.media.j3d.*;                   //Java3d
import javax.vecmath.*;                     //Point3f,Color3f

public class Ex81Behavior extends Behavior{

    private WakeupCondition wakeupConditon;
    private TransformGroup tg; 
    private PolygonAttributes pa;
    private Transform3D trans = new Transform3D();
    private float move1 = 0;
    private float move2 = 0;                //@ add
    private float direct1 = 1.0f;           //@ add
    private float direct2 = 1.0f;           //@ add
    private boolean wireFlag = false;
    private boolean f1Flag = false;
    private boolean f2Flag = false;         //@ add

    public Ex81Behavior(TransformGroup tg, PolygonAttributes pa){

        this.tg = tg;                //変更対象の幾何ノード
        this.pa = pa;                //変更対象のポリゴン属性
    }

    public void initialize(){

        WakeupCriterion[] event = new WakeupCriterion[2];
        event[0] = new WakeupOnElapsedFrames(0);
        event[1] = new WakeupOnAWTEvent(KeyEvent.KEY_PRESSED);
        wakeupConditon = new WakeupOr(event);
        wakeupOn(wakeupConditon);

        System.out.println("--------------------------------");
        System.out.println(" W  : ワイヤー/ソリッドの切替");
        System.out.println(" F1 : Y軸方向の平行移動ON/OFF");
        System.out.println(" F2 : X軸方向の平行移動ON/OFF");
        System.out.println("--------------------------------");
    }

    public void processStimulus(Enumeration enumeration){

        WakeupCriterion event;
        AWTEvent[] awtEvent;

        while(enumeration.hasMoreElements()){
            event = (WakeupCriterion)enumeration.nextElement();
            if(event instanceof WakeupOnAWTEvent){             //AWTイベント
                awtEvent = ((WakeupOnAWTEvent)event).getAWTEvent();
                processMyKeyEvent(awtEvent);
            }else if(event instanceof WakeupOnElapsedFrames){  //フレーム経過
                processMyFrameEvent();
            }
        }
        wakeupOn(wakeupConditon);
    }

    private void processMyKeyEvent(AWTEvent[] event){

        for(int i=0; i<event.length; i++){
            if(((KeyEvent)(event[i])).getID()==KeyEvent.KEY_PRESSED){
                switch(((KeyEvent)(event[i])).getKeyCode()){
                    case KeyEvent.VK_W:    //ワイヤー・ソリッドの切替
                        System.out.println("W pressed");
                        wireFlag=!wireFlag;
                        break;
                    case KeyEvent.VK_F1:   //Y軸平行移動の開始・停止
                        System.out.println("F1 pressed");
                        f1Flag=!f1Flag;
                        break;
                    case KeyEvent.VK_F2:   //X軸平行移動の開始・停止 @add
                        System.out.println("F2 pressed");
                        f2Flag=!f2Flag;
                        break;
                }
            }
        }
    }

    private void processMyFrameEvent(){

        if(f1Flag==true || f2Flag==true){  //@ chg & add
            if(f1Flag==true){
                if(move1 >  0.80f) direct1 = -1.0f;
                if(move1 < -0.80f) direct1 =  1.0f;
                move1 += 0.01f*direct1;
            }
            if(f2Flag==true){
                if(move2 >  0.80f) direct2 = -1.0f;
                if(move2 < -0.80f) direct2 =  1.0f;
                move2 += 0.01f*direct2;
            }
            trans.setTranslation(new Vector3f(move2, move1, 0.0f));
            tg.setTransform(trans);
        }

        if(wireFlag==true){
            pa.setPolygonMode(PolygonAttributes.POLYGON_LINE);
        }else{
            pa.setPolygonMode(PolygonAttributes.POLYGON_FILL);
        }
    }
}