import java.applet.*; import java.awt.*; import java.awt.event.*; public class m0104418 extends Applet { static int WIDTH, HEIGHT; // 画面サイズ Point point[][]; // 制御点 int point_num = 0; // 制御点の番号 int captured_point = -1; // つかんでいる制御点の番号 //（-1のときつかんでいない） boolean capture_mode_FLG; // 線を制御できるかを表すフラグ static final int point_data[][][] = // 点情報 { //鳥 {{190,130},{240,120}},//くちばし {{240,120},{200,105}}, {{200,105},{190,80},{150,95}},//頭部 {{150,95},{125,110},{110,115}}, {{110,115},{120,118}}, {{120,118},{130,140},{105,165}}, {{105,165},{55,240},{80,315},{220,345}},//腹 {{220,345},{250,350},{270,330},{295,310},{320,325}}, {{320,325},{360,345},{390,355},{420,350}},//尾 {{420,350},{390,350},{350,315}}, {{350,315},{410,325},{470,360}}, {{470,360},{420,310},{340,290}}, {{340,290},{320,210},{225,190}},//背（羽） {{225,190},{200,165},{185,160}}, {{185,160},{175,145},{190,130}}, //足 {{220,345},{190,380},{185,410}},//右 {{185,410},{175,425}}, {{175,425},{173,400}}, {{173,400},{140,455},{158,405}}, {{158,405},{185,385},{200,355},{205,343}}, {{160,330},{80,360},{95,380}},//左 {{95,380},{80,365},{65,370}}, {{65,370},{45,365},{65,363}}, {{65,363},{85,370},{150,320}}, //枝 {{350,480},{230,440},{120,390},{70,330}}, {{70,330},{5,260},{60,340}}, {{60,340},{75,360},{0,350}}, {{0,360},{70,360},{85,380}}, {{85,380},{190,440},{250,480}}, //木 {{210,0},{230,35},{260,35}}, {{250,20},{260,70},{305,65}}, {{280,60},{305,140},{385,140}}, {{375,125},{420,190},{480,170}}, //花びら {{65,35},{50,30},{40,45}},//左上 {{40,45},{50,50},{65,35}}, {{50,130},{40,130},{30,135}},//左中 {{30,135},{43,145},{50,130}}, {{240,75},{245,65},{255,65}},//中上 {{255,65},{250,75},{240,75}}, {{380,200},{390,185},{405,190}},//右中 {{405,190},{395,200},{380,200}}, {{417,245},{425,230},{435,235}}, {{435,235},{420,245},{417,245}}, {{415,400},{430,390},{445,390}},//右下 {{445,390},{425,410},{415,400}}, //模様 {{225,190},{180,180},{200,230}},//羽 {{200,230},{235,275},{350,305}}, {{350,305},{345,295},{340,290}}, {{250,270},{295,320},{310,320}},//尾 {{350,315},{340,305},{330,300}}, {{195,220},{195,190},{170,160}},//首 {{180,155},{120,140},{90,245}}, }; Label tf; Graphics offg, backg; Image offi, backi; public void initialize() // 制御点の設定 { int i; point = new Point[point_data.length][]; for(i = 0; i < point.length; i++) { point[i] = new Point[point_data[i].length]; for(int j = 0; j < point_data[i].length; j++) point[i][j] = new Point(point_data[i][j][0], point_data[i][j][1]); } } public void init() { WIDTH = 480; HEIGHT = 480; Button increment, decrement, modify; increment = new Button("線を選ぶ(+)"); // 画面設定 decrement = new Button("線を選ぶ(-)"); modify = new Button("制御点を移動する"); tf = new Label(Integer.toString(point_num)); add(modify); add(increment); add(decrement); add(tf); increment.addActionListener(new ActionListener() // 制御点番号を増やす { public void actionPerformed(ActionEvent ae) { point_num++; if(point_num >= point.length) point_num = 0; tf.setText(Integer.toString(point_num)); repaint(); } }); decrement.addActionListener(new ActionListener() // 制御点番号を減らす { public void actionPerformed(ActionEvent ae) { point_num--; if(point_num < 0) point_num = point.length-1; tf.setText(Integer.toString(point_num)); repaint(); } }); modify.addActionListener(new ActionListener() // モード変更 { public void actionPerformed(ActionEvent ae) { capture_mode_FLG = !capture_mode_FLG; repaint(); } }); addMouseListener(new MouseAdapter() { public void mousePressed(MouseEvent me) // 制御点をつかむ { int i, mx = me.getX(), my = me.getY(); for(i = 0; i < point[point_num].length; i++) { if(point[point_num][i].x-3 <= mx && point[point_num][i].x+3 >= mx && point[point_num][i].y-3 <= my && point[point_num][i].y+3 >= my) break; } if(i < point[point_num].length) captured_point = i; } public void mouseReleased(MouseEvent me) { captured_point = -1; } }); addMouseMotionListener(new MouseMotionAdapter() // 制御点を動かす { public void mouseDragged(MouseEvent me) { if(captured_point == -1) return; point[point_num][captured_point].setLocation(me.getX(), me.getY()); repaint(); } }); initialize(); offi = createImage(WIDTH, HEIGHT); offg = offi.getGraphics(); backi = createImage(WIDTH, HEIGHT); backg = backi.getGraphics(); setBackImage(backg); // test! addKeyListener(new KeyAdapter() { public void keyPressed(KeyEvent ke) { int c = ke.getKeyCode(); if(c == 'P') { System.out.println("{"); for(int i = 0; i < point[point_num].length; i++) System.out.println(""+point[point_num][i].x +", "+point[point_num][i].y); System.out.println("},"); } else if(c == 'B') { // BezierCurve(backg, Color.black); repaint(); } } }); } public void setBackImage(Graphics g) // 背景の用意 { g.setColor(Color.white); g.fillRect(0, 0, WIDTH, HEIGHT); g.setColor(Color.black); g.drawRect(0, 0, WIDTH-1, HEIGHT-1); // 枠描画 } public int kaijyo(int num) // 階乗を計算 { int total = 1; if(num == 0) return 1; for(; num > 1; num--) total *= num; return total; } public void BezierCurve(Graphics g, Color color, Point point[]) // 曲線描画 { int i, j; double x1, x2, y1, y2; double bernstein[] = new double[point.length]; x1 = point[0].x; y1 = point[0].y; g.setColor(color); for(double t = 0; t <= 1; t += 0.01) { for(i = 0; i < point.length; i++) // bernstein関数を計算 { bernstein[i] = (double)kaijyo(point.length-1) / (kaijyo(i)*kaijyo(point.length-1-i)); for(j = 1; j <= i; j++) bernstein[i] *= t; for(j = 1; j <= point.length-1-i; j++) bernstein[i] *= (1-t); } x2 = y2 = 0; for(i = 0; i < point.length; i++) { x2 += point[i].x * bernstein[i]; y2 += point[i].y * bernstein[i]; } g.drawLine((int)x1, (int)y1, (int)x2, (int)y2); x1 = x2; y1 = y2; } } public void paint(Graphics g) { requestFocus(); offg.drawImage(backi, 0, 0, this); // 背景の描画 if(capture_mode_FLG) // 制御点の描画 { offg.setColor(Color.red); for(int i = 0; i < point[point_num].length; i++) { offg.fillRect(point[point_num][i].x-3, point[point_num][i].y-3, 7, 7); offg.drawString(Integer.toString(i+1), point[point_num][i].x-3, point[point_num][i].y-6); } } for(int i = 0; i < point.length; i++) // 曲線描画 { if(capture_mode_FLG && point_num == i) BezierCurve(offg, Color.blue, point[i]); else BezierCurve(offg, Color.black, point[i]); } g.drawImage(offi, 0, 0, this); } public void update(Graphics g) { paint(g); } }