java版 L-system 源代码

package classes; import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.event.*; public class Lexample extends JFrame implements ActionListener,ItemListener { JButton ok,cancel; JPanel p_1,p_2; JRadioButton box_1,box_2,box_3,box_4,box_5,box_6,box_7; JRadioButton box_8,box_9,box_10,box_11,box_12; ButtonGroup group; JTextArea text; int choice; Lsystem localsystem; Lexample(Lsystem lsystem,String s) { super(s); localsystem=lsystem; Container con=this.getContentPane(); ok=new JButton("确定"); cancel=new JButton("取消"); group=new ButtonGroup(); p_1=new JPanel(); p_2=new JPanel(); con.setLayout(new BorderLayout()); p_1.setLayout(new GridLayout(13,1)); p_2.setLayout(new GridLayout(1,5)); text=new JTextArea(); //文本区初始化为"斜草"规则 text.setText(""); text.setBackground(Color.lightGray); text.append("sStart =G\n"); text.append("sRule[0][0]=G\n"); text.append("sRule[0][1]=GFX[+++++GFG][-----GFG]\n"); text.append("sRule[1][0]=X\n"); text.append("sRule[1][1]=F-XF"); text.setEditable(false); box_1=new JRadioButton("斜草",false); group.add(box_1); box_2=new JRadioButton("树伞",false); group.add(box_2); box_3=new JRadioButton("有花蕾的植物",false); group.add(box_3); box_4=new JRadioButton("枝",false); group.add(box_4); box_5=new JRadioButton("蒲公英",false); group.add(box_5); box_6=new JRadioButton("灌木丛",false); group.add(box_6); box_7=new JRadioButton("棕榈",false); group.add(box_7); box_8=new JRadioButton("开花的草",false); group.add(box_8); box_9=new JRadioButton("斜枝",false); group.add(box_9); box_10=new JRadioButton("杨柳",false); group.add(box_10); box_11=new JRadioButton("树",false); group.add(box_11); box_12=new JRadioButton("对称的树",false); group.add(box_12); choice=localsystem.exampleChoice; //由主窗体获取当前是哪个图形规则,并将这一规则的 //图形名称设置为选种状态 switch(choice) { case 1: box_1.setSelected(true); break; case 2: box_2.setSelected(true); break; case 3: box_3.setSelected(true); break; case 4: box_4.setSelected(true); break; case 5: box_5.setSelected(true); break; case 6: box_6.setSelected(true); break; case 7: box_7.setSelected(true); break; case 8: box_8.setSelected(true); break; case 9: box_9.setSelected(true); break; case 10: box_10.setSelected(true); break; case 11: box_11.setSelected(true); break; case 12: box_12.setSelected(true); break; } p_1.add(box_1); p_1.add(box_2); p_1.add(box_3); p_1.add(box_4); p_1.add(box_5); p_1.add(box_6); p_1.add(box_7); p_1.add(box_8); p_1.add(box_9); p_1.add(box_10); p_1.add(box_11); p_1.add(box_12); p_2.add(new Label()); p_2.add(ok); p_2.add(new Label()); p_2.add(cancel); p_2.add(new Label()); con.add(p_1,"West"); con.add(text,"Center"); con.add(p_2,"South"); box_1.addItemListener(this); box_2.addItemListener(this); box_3.addItemListener(this); box_4.addItemListener(this); box_5.addItemListener(this); box_6.addItemListener(this); box_7.addItemListener(this); box_8.addItemListener(this); box_9.addItemListener(this); box_10.addItemListener(this); box_11.addItemListener(this); box_12.addItemListener(this); ok.addActionListener(this); cancel.addActionListener(this); addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent we) {setVisible(false);} }); setBackground(Color.lightGray); setSize(320,400); setResizable(false); //获取默认显示器的尺寸 Dimension d=Toolkit.getDefaultToolkit().getScreenSize(); //设置窗体显示位置 this.setLocation((d.width-this.getSize().width)/2,(d.height-this.getSize().width)/2); setVisible(false); } public void actionPerformed(ActionEvent ae) { if(ae.getSource()==ok) { if(choice==1)//"斜草" { localsystem.startX=340; localsystem.startY=20; localsystem.initDirection=60; localsystem.lengthF=3.3; localsystem.rotation=-3; localsystem.startDepth=7; localsystem.ruleNumber=2; localsystem.sStart="G"; localsystem.sRule[0][0]="G"; localsystem.sRule[0][1]="GFX[+++++GFG][-----GFG]"; localsystem.sRule[1][0]="X"; localsystem.sRule[1][1]="F-XF"; localsystem.exampleChoice=1; } if(choice==2)//"树伞" { localsystem.startX=240; localsystem.startY=10; localsystem.initDirection=90; localsystem.lengthF=4.5; localsystem.rotation=30; localsystem.startDepth=5; localsystem.ruleNumber=1; localsystem.sStart="F"; localsystem.sRule[0][0]="F"; localsystem.sRule[0][1]="F[+F[+F][-F]F][-F[+F][-F]F]F[+F][-F]F"; localsystem.exampleChoice=2; } if(choice==3)//"有花蕾的植物" { localsystem.startX=240; localsystem.startY=210; localsystem.initDirection=-90; localsystem.lengthF=9.5; localsystem.rotation=-18; localsystem.startDepth=13; localsystem.ruleNumber=4; localsystem.sStart="K"; localsystem.sRule[0][0]="S"; localsystem.sRule[0][1]="[+++G][---H]FFS"; localsystem.sRule[1][0]="G"; localsystem.sRule[1][1]="+G[-FH]F"; localsystem.sRule[2][0]="H"; localsystem.sRule[2][1]="-H[+FG]F"; localsystem.sRule[3][0]="K"; localsystem.sRule[3][1]="FSF"; localsystem.exampleChoice=3; } if(choice==4)//"枝" { localsystem.startX=240; localsystem.startY=5; localsystem.initDirection=90; localsystem.lengthF=1.5; localsystem.rotation=-25.7341; localsystem.startDepth=6; localsystem.ruleNumber=1; localsystem.sStart="F"; localsystem.sRule[0][0]="F"; localsystem.sRule[0][1]="F[+F]F[-F]F"; localsystem.exampleChoice=4; } if(choice==5)//"蒲公英" { localsystem.startX=240; localsystem.startY=10; localsystem.initDirection=90; localsystem.lengthF=0.37; localsystem.rotation=30; localsystem.startDepth=10; localsystem.ruleNumber=2; localsystem.sStart="Y"; localsystem.sRule[0][0]="X"; localsystem.sRule[0][1]="X[-FFF][+FFF]FX"; localsystem.sRule[1][0]="Y"; localsystem.sRule[1][1]="YFX[+Y][-Y]"; localsystem.exampleChoice=5; } if(choice==6)//"灌木丛" { localsystem.startX=300; localsystem.startY=20; localsystem.initDirection=90; localsystem.lengthF=3.5; localsystem.rotation=-30; localsystem.startDepth=6; localsystem.ruleNumber=1; localsystem.sStart="F"; localsystem.sRule[0][0]="F"; localsystem.sRule[0][1]="FF-[-F+F+F]+[+F-F-F]"; localsystem.exampleChoice=6; } if(choice==7)//"棕榈" { localsystem.startX=240; localsystem.startY=20; localsystem.initDirection=90; localsystem.lengthF=5.6; localsystem.rotation=-18; localsystem.startDepth=12; localsystem.ruleNumber=5; localsystem.sStart="SLFFF"; localsystem.sRule[0][0]="S"; localsystem.sRule[0][1]="[+++H][---G]TS"; localsystem.sRule[1][0]="G"; localsystem.sRule[1][1]="+H[-G]L"; localsystem.sRule[2][0]="H"; localsystem.sRule[2][1]="-G[+H]L"; localsystem.sRule[3][0]="T"; localsystem.sRule[3][1]="TL"; localsystem.sRule[4][0]="L"; localsystem.sRule[4][1]="[-FFF][+FFF]F"; localsystem.exampleChoice=7; } if(choice==8)//"开花的草" { localsystem.startX=240; localsystem.startY=10; localsystem.initDirection=90; localsystem.lengthF=3; localsystem.rotation=-30; localsystem.startDepth=8; localsystem.ruleNumber=2; localsystem.sStart="G"; localsystem.sRule[0][0]="G"; localsystem.sRule[0][1]="[+FGF][-FGF]XG"; localsystem.sRule[1][0]="X"; localsystem.sRule[1][1]="XFX";