合肥工业大学操作系统绘制前驱图

PAGEPAGE1课程设计设计题目 绘制描述事件先后顺序的前驱图设计题目学生姓名号 学生姓名号学号指导教师学号指导教师专业班级 计算机科学与技术09-22010年6月20日合肥工业大学课程设计任务书第一章课程设计概述1.1设计任务:设计一个可以绘制前驱图的界面程序1.2设计要求：建立前驱图的数据结构描述；建立绘制前驱图的例程，包括结点和有向边；可以删除、添加结点或有向边；可用鼠标在窗口的任意位置指点，确定结点或有向边位置；可以拖动现有结点的位置，与该结点相连的有向边也随之移动；可以将前驱图存入文件，从文件中取出；第二章开发环境Javajdk1.6，eclipse程序算法与实现绘制结点算法简述先绘制一个圆，将数字转化为字符，再在圆中绘制字符绘制带剪头直线算法简述先绘制一条直线，在直线的一端绘制一个三角形程序实现数据结构Vector<Point>利用vector向量容器存放point数据结构第五章程序实现程序清单Node.javapackagecom.draw;importjava.awt.Graphics2D;publicclassNode{ /*绘制结点函数*/ publicvoiddrawNode(intx,inty,intn,Graphics2Dg){ Stringstr=Integer.toString(n); g.drawOval(x,y,20,20); g.drawString(str,x+7,y+15); }}Line.javapackagecom.draw;importjava.awt.Graphics2D;importjava.awt.geom.GeneralPath;publicclassLine{ /*绘制直线函数*/ publicvoiddrawLine(intsx,intsy,intex,intey,Graphics2Dg){ doubleH=10;//箭头高度doubleL=4;//底边的一半intx3=0;inty3=0;intx4=0;inty4=0;doubleawrad=Math.atan(L/H);//箭头角度doublearraow_len=Math.sqrt(L*L+H*H);//箭头的长度double[]arrXY_1=rotateVec(ex-sx,ey-sy,awrad,true,arraow_len);double[]arrXY_2=rotateVec(ex-sx,ey-sy,-awrad,true,arraow_len);doublex_3=ex-arrXY_1[0];//(x3,y3)是第一端点doubley_3=ey-arrXY_1[1];doublex_4=ex-arrXY_2[0];//(x4,y4)是第二端点doubley_4=ey-arrXY_2[1];DoubleX3=newDouble(x_3);x3=X3.intValue();DoubleY3=newDouble(y_3);y3=Y3.intValue();DoubleX4=newDouble(x_4);x4=X4.intValue();DoubleY4=newDouble(y_4);y4=Y4.intValue();//画线g.drawLine(sx,sy,ex,ey);GeneralPathtriangle=newGeneralPath();triangle.moveTo(ex,ey);triangle.lineTo(x3,y3);triangle.lineTo(x4,y4);triangle.closePath();//实心箭头g.fill(triangle);//非实心箭头//g.draw(triangle); } publicstaticdouble[]rotateVec(intpx,intpy,doubleang, booleanisChLen,doublenewLen){ doublemathstr[]=newdouble[2]; //矢量旋转函数，参数含义分别是x分量、y分量、旋转角、是否改变长度、新长度 doublevx=px*Math.cos(ang)-py*Math.sin(ang); doublevy=px*Math.sin(ang)+py*Math.cos(ang); if(isChLen){ doubled=Math.sqrt(vx*vx+vy*vy); vx=vx/d*newLen; vy=vy/d*newLen; mathstr[0]=vx; mathstr[1]=vy; } returnmathstr; } } Recorder.javapackagecom.recorder;importjava.awt.Point;importjava.io.BufferedReader;importjava.io.BufferedWriter;importjava.io.FileReader;importjava.io.FileWriter;importjava.util.Vector;importcom.view.DrawPanel;publicclassRecorder{ FileWriterfw=null; BufferedWriterbw=null; FileReaderfr=null; BufferedReaderbr=null; //保存结点记录 publicvoidkeepNodeRecord(){ try{ //创建 fw=newFileWriter("D://myNodeRecording.txt"); bw=newBufferedWriter(fw); for(inti=0;i<DrawPanel.nodes.size();i++){ Pointp=DrawPanel.nodes.get(i); Stringrecode=p.x+""+p.y; bw.write(recode+"\r\n"); } }catch(Exceptione){ e.printStackTrace(); }finally{ try{ bw.close(); fw.close(); }catch(Exceptione2){ e2.printStackTrace(); } } } //重置nodes的值 publicvoidsetNodes(){ try{ fr=newFileReader("D://myNodeRecording.txt"); br=newBufferedReader(fr); Stringn=""; DrawPanel.nodes.clear(); while((n=br.readLine())!=null){ String[]xy=n.split(""); Pointp=newPoint(Integer.parseInt(xy[0]),Integer.parseInt(xy[1])); DrawPanel.nodes.add(p); } }catch(Exceptione){ e.printStackTrace(); }finally{ try{ br.close(); fr.close(); }catch(Exceptione2){ e2.printStackTrace(); } } } //保存point记录 publicvoidkeepPointRecord(){ try{ //创建 fw=newFileWriter("D://myPointRecording.txt"); bw=newBufferedWriter(fw); for(inti=0;i<DrawPanel.point2.size();i++){ Pointp1=DrawPanel.point1.get(i); Pointp2=DrawPanel.point2.get(i); Stringrecode=p1.x+""+p1.y+""+p2.x+""+p2.y; bw.write(recode+"\r\n"); } }catch(Exceptione){ e.printStackTrace(); }finally{ try{ bw.close(); fw.close(); }catch(Exceptione2){ e2.printStackTrace(); } } } //设置point1的值 publicvoidsetPoint(){ try{ fr=newFileReader("D://myPointRecording.txt"); br=newBufferedReader(fr); Stringn=""; DrawPanel.point1.clear(); DrawPanel.point2.clear(); while((n=br.readLine())!=null){ String[]x1y1x2y2=n.split(""); Pointp1=newPoint(Integer.parseInt(x1y1x2y2[0]),Integer.parseInt(x1y1x2y2[1])); DrawPanel.point1.add(p1); Pointp2=newPoint(Integer.parseInt(x1y1x2y2[2]),Integer.parseInt(x1y1x2y2[3])); DrawPanel.point2.add(p2); } }catch(Exceptione){ e.printStackTrace(); }finally{ try{ br.close(); fr.close(); }catch(Exceptione2){ e2.printStackTrace(); } } }}DrawPanel.javapackagecom.view;importjava.awt.Color;importjava.awt.Graphics;importjava.awt.Graphics2D;importjava.awt.Point;importjava.awt.event.MouseEvent;importjava.awt.event.MouseListener;importjava.awt.event.MouseMotionListener;importjava.util.Vector;importjavax.swing.JPanel;importcom.draw.Line;importcom.draw.Node;publicclassDrawPanelextendsJPanelimplementsMouseMotionListener,MouseListener{ staticintcommand; //被选中索引 intselectNode=-1; intselectLine=-1; //定义结点向量组 publicstaticVector<Point>nodes=newVector<Point>(); //第一直线点向量组 publicstaticVector<Point>point1=newVector<Point>(); publicstaticVector<Point>point2=newVector<Point>(); ToolPaneltoolPanel=newToolPanel(); Linel=newLine(); Noden=newNode(); DrawPanel(){ addMouseMotionListener(this); addMouseListener(this); setBackground(Color.WHITE);//设置drawpanel背景色 } publicvoidpaint(Graphicsg){ super.paint(g); Graphics2Dg2=(Graphics2D)g; if(nodes!=null){ for(inti=0;i<nodes.size();i++){ Pointnodestmp=nodes.get(i); n.drawNode(nodestmp.x,nodestmp.y,i,g2); } } if(point1!=null&&point2!=null){ for(intj=0;j<point2.size();j++){ Pointlinetmp1=point1.get(j); Pointlinetmp2=point2.get(j); l.drawLine(linetmp1.x,linetmp1.y,linetmp2.x,linetmp2.y,g2); } } repaint(); } /*判断鼠标是否选中结点*/ booleanisSelectedNode(intx,inty){ booleanisSelected=false; for(inti=0;i<nodes.size();i++) { intm=nodes.get(i).x; intn=nodes.get(i).y; if(x>=m&&x<=m+20&&y>=n&&y<=y+20){ isSelected=true; selectNode=i; } } returnisSelected; } /*判断鼠标是否选中直线*/ booleanisSelectedLine(intx,inty){ booleanisSelected=false; Pointp=newPoint(x,y); for(inti=0;i<point2.size();i++){ Pointstart=point1.get(i); Pointend=point2.get(i); if(isPointOnLine(p,start,end)){ isSelected=true; selectLine=i; } } returnisSelected; } /*判断点是否在直线上*/ booleanisPointOnLine(Pointp,Pointstart,Pointend){ intdiv=10;intxEnd=end.x-start.x;intyEnd=start.y-end.y;intx2=p.x-start.x;inty1=start.y-p.y-div;inty2=start.y-p.y+div;doubletan1=Math.atan2(yEnd,xEnd);doubletan2=Math.atan2(y1,x2);doubletan3=Math.atan2(y2,x2);returntan1>=tan2&&tan1<=tan3;} /*MouseListener*/ /*按下并释放触发*/ publicvoidmouseClicked(MouseEvente){ intx=e.getX(); inty=e.getY(); Pointp=newPoint(x,y); if(command==toolPanel.drawNode){ nodes.add(p); } if(command==toolPanel.deleteCommand){ if(isSelectedNode(x,y)){ nodes.remove(selectNode);// System.out.println(select+"isSelected"); } if(isSelectedLine(x,y)){ point1.remove(selectLine); point2.remove(selectLine); } }} /*按下鼠标键触发*/ publicvoidmousePressed(MouseEvente){ if(command==toolPanel.drawLine){ int x1=e.getX(); int y1=e.getY(); Pointp1=newPoint(x1,y1); point1.add(p1); } } /*释放鼠标键触发*/ publicvoidmouseReleased(MouseEvente){ if(command==toolPanel.drawLine){ intx2=e.getX(); inty2=e.getY(); Pointp2=newPoint(x2,y2); point2.add(p2); } } /*鼠标指针进入主键触发*/ publicvoidmouseEntered(MouseEvente){ } /*鼠标指针离开触发*/ publicvoidmouseExited(MouseEvente){ }ToolPanel.javapackagecom.view;importjava.awt.Button;importjava.awt.Color;importjava.awt.FileDialog;importjava.awt.FlowLayout;importjava.awt.Label;importjava.awt.TextField;importjava.awt.event.ActionEvent;importjava.awt.event.ActionListener;importjavax.swing.JPanel;importcom.recorder.Recorder;publicclassToolPanelextendsJPanelimplementsActionListener{ //定义一个recorder对象 Recorderrecorder=newRecorder(); /*命令值*/ intclearCommand=0; intopenCommand=1; intsaveCommand=2; intdrawNode=3; intdrawLine=4; intmoveCommand=5; intdeleteCommand=6; FlowLayoutflowLayou;//添加布局 Labellabel1;//工具栏标签 Labellabel2;//当前动作标签 Buttonclear; Buttonopen; Buttonsave; Buttonnode; Buttonline; Buttonmove; Buttondelete; TextFieldfield;//显示动作文本区 //定义两个类对象，方便调用 MainFrameframe; //定义对话框// FileDialogfileDialog_save=newFileDialog(frame,"保存文件对话框",FileDialog.SAVE);;// FileDialogfileDialog_load=newFileDialog(frame,"打开文件对话框",FileDialog.LOAD); ToolPanel(){ FlowLayoutflowLayout=newFlowLayout(); setBackground(Color.LIGHT_GRAY);//设置toolpanel背景色 //添加控件 label1=newLabel("工具栏:"); clear=newButton("清空"); open=newButton("打开"); save=newButton("保存"); node=newButton("结点"); line=newButton("连线"); move=newButton("移动"); delete=newButton("删除"); label2=newLabel("当前动作:"); field=newTextField(10); //控件添加到控件组件上 add(label1); add(clear); add(open); add(save); add(node); add(line); add(move); add(delete); add(label2); add(field); //注册监听 clear.addActionListener(this); open.addActionListener(this); save.addActionListener(this); node.addActionListener(this); line.addActionListener(this); move.addActionListener(this); delete.addActionListener(this); //布局定义 flowLayout.setAlignment(flowLayout.LEADING); setLayout(flowLayout); } /*设置命令类型*/ voidsetCommand(intstyle){ DrawPmand=style; } publicvoidactionPerformed(ActionEvente){ if(e.getSource()==clear){ field.setText(clear.getLabel()); setCommand(clearCommand); DrawPanel.nodes.clear(); DrawPanel.point1.clear(); DrawPanel.point2.clear(); } if(e.getSource()==open){ field.setText(open.getLabel()); setCommand(openCommand); //fileDialog_load.setVisible(true); recorder.setNodes(); recorder.setPoint(); } if(e.getSource()==save){ field.setText(save.getLabel()); setCommand(saveCommand); //fileDialog_save.setVisible(true); recorder.keepNodeRecord(); recorder.keepPointRecord();// Sys