質問編集履歴
3
回答をいただいたあとの修正版
test
CHANGED
File without changes
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test
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@@ -397,3 +397,303 @@
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現在、実行した段階でなぜか毎回決まった線が描画されてしまっています。
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修正後
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404
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405
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Turtle.java
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406
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407
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```lang-<Java>
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408
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409
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public class Turtle{
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411
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412
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//インスタンス変数の宣言
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415
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417
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int x, y;
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double angle = 0;
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421
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422
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ArrayList<Point> points = new ArrayList<Point>();
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425
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427
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//コンストラクタの定義
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431
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Turtle(int i, int j){
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x = i;
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y = j;
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points.add(new Point(x, y));
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}
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//各種メソッドの定義
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446
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447
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public void move(double x, double y){
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int i = points.size() - 1;
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Point pt = points.get(i);
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453
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points.add(new Point( (int)x+pt.x, (int)y+pt.y));
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}
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459
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//亀の軌跡の描画
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462
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463
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public void paint(Graphics g){
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g.setColor(pencolor);
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int i;
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int px[] = new int[points.size()];
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int py[] = new int[points.size()];
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for( i = 0; i < points.size(); i++){
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Point p_i = points.get(i);
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px[i] = p_i.x;
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py[i] = p_i.y;
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}
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g.drawPolyline(px, py, points.size());
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}
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}
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```
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Turtle2.java
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```lang-<Java>
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public class Turtle2{
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Turtle kame[] = new Turtle[4];
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Turtle2(Turtle k[]){
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kame = k;
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}
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void move(double x, double y){
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kame[1].move(x/2, y/2);
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kame[2].move(x/3, y/3);
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kame[3].move(x*2, y*2);
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void paint(Graphics g){
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for(int i = 0; i < 4; i++){
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kame[i].paint(g);
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}
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}
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}
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```
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Rabbit.java
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```lang-<Java>
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public class Rabbit extends Applet implements MouseListener, MouseMotionListener{
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int current_x; //マウスの現在のx座標
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int current_y; //マウスの現在のy座標
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Turtle kame[] = new Turtle[4];
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Turtle2 Usagi = new Turtle2(kame);
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Image imgs;
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566
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public void init(){
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setBackground(Color.white);
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imgs= getImage(getDocumentBase(), "kame2.gif");
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573
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kame[0] = new Turtle(100, 100);
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kame[1] = new Turtle(300, 100);
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kame[2] = new Turtle(100, 300);
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kame[3] = new Turtle(300, 300);
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addMouseListener(this);
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addMouseMotionListener(this);
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}
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public void mouseDragged(MouseEvent e){
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599
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int size = kame[0].points.size() - 1;
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Point p_0 = kame[0].points.get(size);
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if(current_x >= p_0.x && current_x <= p_0.x+68 && current_y >= p_0.y && current_y <= p_0.y + 48){
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current_x = e.getX();
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current_y = e.getY();
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kame[0].points.add(new Point(current_x, current_y));
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repaint();
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}
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}
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public void mouseMoved(MouseEvent e){
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}
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public void mouseClicked(MouseEvent e){
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}
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public void mouseEntered(MouseEvent e){
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}
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public void mouseExited(MouseEvent e){
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}
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public void mousePressed(MouseEvent e){
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}
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public void mouseReleased(MouseEvent e){
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}
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662
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663
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664
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public void paint(Graphics g){
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for(int i = 0; i < 4; i++){
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670
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671
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int size = kame[i].points.size() - 1;
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673
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675
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Point p_cur = kame[i].points.get(size - 1);
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Point p_prev = kame[i].points.get(size - 1);
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double dx = p_cur.x - p_prev.x;
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680
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681
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double dy = p_cur.y - p_prev.y;
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683
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Usagi.move(dx, dy);
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685
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g.drawImage(imgs, kame[i].points.get(size).x, kame[i].points.get(size).y,this);
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686
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}
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688
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689
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g.setColor(Color.black);
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690
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691
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Usagi.paint(g);
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693
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}
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}
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696
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697
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```
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698
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699
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こんなかんじになりました。現在実行時エラーです(´;ω;`)
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2
追記
test
CHANGED
File without changes
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test
CHANGED
@@ -390,6 +390,10 @@
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390
390
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391
391
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```
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392
392
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393
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-
現在は実行時エラーです。
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393
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解決「現在は実行時エラーです。
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394
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-
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394
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+
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395
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-
また、実行時エラーにならずとも、足跡が描画されなかったり、右下にしか亀が動かなかったりします。
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395
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+
また、実行時エラーにならずとも、足跡が描画されなかったり、右下にしか亀が動かなかったりします。」
|
396
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+
|
397
|
+
|
398
|
+
|
399
|
+
現在、実行した段階でなぜか毎回決まった線が描画されてしまっています。
|
1
式の修正
test
CHANGED
File without changes
|
test
CHANGED
@@ -362,7 +362,7 @@
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|
362
362
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|
363
363
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deg = Math.atan2(dy, dx);
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364
364
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365
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-
if( deg =
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365
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if( deg != 0 || deg != pi || deg != -pi){
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366
366
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367
367
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length = dx;
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368
368
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|
@@ -386,8 +386,10 @@
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386
386
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387
387
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388
388
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389
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+
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390
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+
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391
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```
|
392
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+
|
389
393
|
現在は実行時エラーです。
|
390
394
|
|
391
395
|
また、実行時エラーにならずとも、足跡が描画されなかったり、右下にしか亀が動かなかったりします。
|
392
|
-
|
393
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-
```
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