Appendix D Main Applet for Web-Based 3D Experiment

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1 0 Ko & Cheng Appendix D Main Applet for Web-Based 3D Experiment d.1 ImportInG libraries import java.awt.borderlayout; import java.applet.applet; import java.awt.event.*; import com.sun.j3d.utils.applet.mainframe; import com.sun.j3d.utils.universe.*; import javax.media.j3d.*; import com.sun.j3d.utils.image.textureloader; import java.net.*; import javax.swing.*; import java.awt.*; d.2 main applet for creating all objects In laboratory public class Oscilloscope extends Applet implements ActionListener // Osci private java.net.url Ch1 = null; private java.net.url Ch2 = null; private java.net.url Vposi = null; private java.net.url Mode = null; private java.net.url Volts = null;

2 Appendix D 0 private java.net.url Source = null; private java.net.url Sync = null; private java.net.url Ac = null; private java.net.url Add = null; private java.net.url Hposi = null; private java.net.url Vdiv = null; private java.net.url Trig = null; private java.net.url Tdiv = null; private java.net.url Focus = null; private java.net.url Intensity = null; private java.net.url Blank = null; private java.net.url Cal = null; private java.net.url Input = null; private java.net.url Output = null; private java.net.url Line = null; private java.net.url Gnd = null; private java.net.url Branch = null; // Sg private java.net.url Case = null; private java.net.url Backside = null; private java.net.url Leftside = null; private java.net.url Rightside = null; private java.net.url Calconnector = null; private java.net.url Power = null; private java.net.url Left = null; private java.net.url Right = null; private java.net.url Wave = null; private java.net.url Amp = null; private java.net.url Freq = null; private java.net.url switcher = null; private java.net.url Dot = null; private java.net.url Battery = null; // Pass private java.net.url brick = null; private java.net.url floor = null; private java.net.url ceiling = null; private java.net.url Door = null; private java.net.url Desk = null; private java.net.url Desk1 = null; private java.net.url Outside01 = null; private java.net.url Outside02 = null; private java.net.url Airbus01 = null; private java.net.url Picture01 = null; private java.net.url Picture02 = null; private java.net.url Picture03 = null; private java.net.url Picture04 = null; private java.net.url Vlabposter01 = null; private java.net.url Vlabposter02 = null; private java.net.url Vlabname = null; private java.net.url D0 = null; private java.net.url D1 = null;

3 0 Ko & Cheng private java.net.url D2 = null; private java.net.url D3 = null; private java.net.url D4 = null; private java.net.url D5 = null; private java.net.url D6 = null; private java.net.url D7 = null; private java.net.url D8 = null; private java.net.url D9 = null; private java.net.url C = null; private java.net.url OK = null; private java.net.url Yellowplug = null; private java.net.url Redplug = null; private java.net.url Blueplug = null; private java.net.url Greenplug = null; private java.net.url image = null; private java.net.url image1 = null; private URL helpfile = null; private java.net.url cir_board = null; // private View view = null; private SimpleUniverse u = null; private Scene3D scene3d = null; private static final int VIRTUAL_EYE = 2; private OPanel panel; d.3 InItIalIZatIon function for main applet public void init() setlayout(new BorderLayout()); Canvas3D c = new Canvas3D(SimpleUniverse.getPreferredConfiguration()); add( Center, c); timerfield timer = new timerfield(4); String path = getcodebase().tostring(); LoadPanel(); panel = new OPanel(image, image1, timer); //Loading the panel of the 2D part add( South, panel); panel.forward.addactionlistener(this); LoadCir_Board(); scene3d = new Scene3D(cir_board); //Loading the the 3D part scene3d.setpanel(panel); //Loading the the 3D part LoadTextured(); u = new SimpleUniverse(c); BranchGroup scene = scene3d.createscenegraph(u, c); u.addbranchgraph(scene);

4 Appendix D view = u.getviewer().getview(); view.setfrontclippolicy(virtual_eye); view.setfrontclipdistance(0.05); view.setwindowresizepolicy(1); view.setwindowmovementpolicy(1); //Modifying the view parameters d.4 destroying function for main applet public void destroy() if (scene3d!=null) scene3d.closeall(); u.removealllocales(); d.5 loading vrml based circuit board object for main applet public void LoadCir_Board() cir_board = new java.net.url(getcodebase().tostring()+ models/battary.wrl ); catch (java.net.malformedurlexception ex) d.6 loading pictures for 3d Walls and environment for main applet public void LoadPanel() image = new java.net.url(getcodebase().tostring()+ images/rectangle.jpg ); catch (java.net.malformedurlexception ex) image1 = new java.net.url(getcodebase().tostring()+ images/rotate.jpg ); catch (java.net.malformedurlexception ex)

5 Ko & Cheng d.7 definig usual function for keyboard and mouse Inputs for main applet public void actionperformed(actionevent event) /* if (event.getsource()==panel.forward) try helpfile = new URL(getCodeBase().toString() + vrosciexp1.html ); catch(java.net.malformedurlexception ex) getappletcontext().showdocument(helpfile, help ); */ d.8 loading pictures for defining texture on Instruments for main applet public void LoadTextured() // Osci Ch1 = new java.net.url(getcodebase().tostring() + images/ch1.gif ); catch (java.net.malformedurlexception ex) scene3d.ch1 = new TextureLoader(Ch1, this).gettexture(); Ch2 = new java.net.url(getcodebase().tostring() + images/ch2.gif ); catch (java.net.malformedurlexception ex) scene3d.ch2 = new TextureLoader(Ch2, this).gettexture(); Vposi = new java.net.url(getcodebase().tostring() + images/vposi.gif );

6 Appendix D catch (java.net.malformedurlexception ex) scene3d.vposi = new TextureLoader(Vposi, this).gettexture(); Mode = new java.net.url(getcodebase().tostring() + images/mode.gif ); catch (java.net.malformedurlexception ex) scene3d.mode = new TextureLoader(Mode, this).gettexture(); Volts = new java.net.url(getcodebase().tostring() + images/volts.gif ); catch (java.net.malformedurlexception ex) scene3d.volts = new TextureLoader(Volts, this).gettexture(); Source = new java.net.url(getcodebase().tostring() + images/source.gif ); catch (java.net.malformedurlexception ex) scene3d.source = new TextureLoader(Source, this).gettexture(); Sync = new java.net.url(getcodebase().tostring() + images/sync.gif ); catch (java.net.malformedurlexception ex) scene3d.sync = new TextureLoader(Sync, this).gettexture(); Ac = new java.net.url(getcodebase().tostring() + images/ac.gif ); catch (java.net.malformedurlexception ex) scene3d.ac = new TextureLoader(Ac, this).gettexture(); Add = new java.net.url(getcodebase().tostring() + images/add.gif ); catch (java.net.malformedurlexception ex) scene3d.add = new TextureLoader(Add, this).gettexture(); Hposi = new java.net.url(getcodebase().tostring() + images/hposi.gif ); catch (java.net.malformedurlexception ex)

7 Ko & Cheng scene3d.hposi = new TextureLoader(Hposi, this).gettexture(); Vdiv = new java.net.url(getcodebase().tostring() + images/vdiv.gif ); catch (java.net.malformedurlexception ex) scene3d.vdiv = new TextureLoader(Vdiv, this).gettexture(); Trig = new java.net.url(getcodebase().tostring() + images/trig.gif ); catch (java.net.malformedurlexception ex) scene3d.trig = new TextureLoader(Trig, this).gettexture(); Tdiv = new java.net.url(getcodebase().tostring() + images/tdiv.gif ); catch (java.net.malformedurlexception ex) scene3d.tdiv = new TextureLoader(Tdiv, this).gettexture(); Focus = new java.net.url(getcodebase().tostring() + images/focus.gif ); catch (java.net.malformedurlexception ex) scene3d.focus = new TextureLoader(Focus, this).gettexture(); Intensity = new java.net.url(getcodebase().tostring() + images/intensity.gif ); catch (java.net.malformedurlexception ex) scene3d.intensity = new TextureLoader(Intensity, this).gettexture(); Blank = new java.net.url(getcodebase().tostring() + images/blank.gif ); catch (java.net.malformedurlexception ex) scene3d.blank = new TextureLoader(Blank, this).gettexture(); Cal = new java.net.url(getcodebase().tostring() + images/cal.gif ); catch (java.net.malformedurlexception ex) scene3d.cal = new TextureLoader(Cal, this).gettexture();

8 Appendix D Input = new java.net.url(getcodebase().tostring() + images/input.gif ); catch (java.net.malformedurlexception ex) scene3d.input = new TextureLoader(Input, this).gettexture(); Output = new java.net.url(getcodebase().tostring() + images/output01.gif ); catch (java.net.malformedurlexception ex) scene3d.output = new TextureLoader(Output, this).gettexture(); Gnd = new java.net.url(getcodebase().tostring() + images/gnd.gif ); catch (java.net.malformedurlexception ex) scene3d.gnd = new TextureLoader(Gnd, this).gettexture(); // Sg Case = new java.net.url(getcodebase().tostring() + images/case.jpg ); catch (java.net.malformedurlexception ex) scene3d.case = new TextureLoader(Case, this).gettexture(); Backside = new java.net.url(getcodebase().tostring() + images/backside.gif ); catch (java.net.malformedurlexception ex) scene3d.backside = new TextureLoader(Backside, this).gettexture(); Rightside = new java.net.url(getcodebase().tostring() + images/rightside.gif ); catch (java.net.malformedurlexception ex) scene3d.rightside = new TextureLoader(Rightside, this).gettexture(); Leftside = new java.net.url(getcodebase().tostring() + images/leftside.gif ); catch (java.net.malformedurlexception ex) scene3d.leftside = new TextureLoader(Leftside, this).gettexture(); Calconnector = new java.net.url(getcodebase().tostring() + images/connector.gif ); catch (java.net.malformedurlexception ex)

9 Ko & Cheng scene3d.calconnector = new TextureLoader(Calconnector, this).gettexture(); Power = new java.net.url(getcodebase().tostring() + images/power.gif ); catch (java.net.malformedurlexception ex) scene3d.power = new TextureLoader(Power, this).gettexture(); Left = new java.net.url(getcodebase().tostring() + images/left.gif ); catch (java.net.malformedurlexception ex) scene3d.left = new TextureLoader(Left, this).gettexture(); Right = new java.net.url(getcodebase().tostring() + images/right.gif ); catch (java.net.malformedurlexception ex) scene3d.right = new TextureLoader(Right, this).gettexture(); Wave = new java.net.url(getcodebase().tostring() + images/wave.gif ); catch (java.net.malformedurlexception ex) scene3d.wave = new TextureLoader(Wave, this).gettexture(); Amp = new java.net.url(getcodebase().tostring() + images/amp.gif ); catch (java.net.malformedurlexception ex) scene3d.amp = new TextureLoader(Amp, this).gettexture(); Freq = new java.net.url(getcodebase().tostring() + images/freq.gif ); catch (java.net.malformedurlexception ex) scene3d.freq = new TextureLoader(Freq, this).gettexture(); switcher = new java.net.url(getcodebase().tostring() + images/switcher.gif ); catch (java.net.malformedurlexception ex)

10 Appendix D scene3d.switcher = new TextureLoader(switcher, this).gettexture(); Dot = new java.net.url(getcodebase().tostring() + images/plug02.gif ); catch (java.net.malformedurlexception ex) scene3d.dot = new TextureLoader(Dot, this).gettexture(); Redplug = new java.net.url(getcodebase().tostring() + images/redplug.gif ); catch (java.net.malformedurlexception ex) scene3d.redplug = new TextureLoader(Redplug, this).gettexture(); Greenplug = new java.net.url(getcodebase().tostring() + images/greenplug.gif ); catch (java.net.malformedurlexception ex) scene3d.greenplug = new TextureLoader(Greenplug, this).gettexture(); Blueplug = new java.net.url(getcodebase().tostring() + images/blueplug.gif ); catch (java.net.malformedurlexception ex) scene3d.blueplug = new TextureLoader(Blueplug, this).gettexture(); Yellowplug = new java.net.url(getcodebase().tostring() + images/yellowplug.gif ); catch (java.net.malformedurlexception ex) scene3d.yellowplug = new TextureLoader(Yellowplug, this).gettexture(); // Pass brick = new java.net.url(getcodebase().tostring() + images/wall.jpg ); catch (java.net.malformedurlexception ex) scene3d.brick = new TextureLoader(brick, this).gettexture(); floor = new java.net.url(getcodebase().tostring() + images/floor.jpg ); catch (java.net.malformedurlexception ex) scene3d.texfloor = new TextureLoader(floor, this).gettexture();

11 Ko & Cheng ceiling = new java.net.url(getcodebase().tostring() + images/ceiling.jpg ); catch (java.net.malformedurlexception ex) scene3d.ceiling = new TextureLoader(ceiling, this).gettexture(); Door = new java.net.url(getcodebase().tostring() + images/door.gif ); catch (java.net.malformedurlexception ex) scene3d.door = new TextureLoader(Door, this).gettexture(); Desk = new java.net.url(getcodebase().tostring() + images/desk.jpg ); catch (java.net.malformedurlexception ex) scene3d.desk = new TextureLoader(Desk, this).gettexture(); Desk1 = new java.net.url(getcodebase().tostring() + images/desk1.jpg ); catch (java.net.malformedurlexception ex) scene3d.desk1 = new TextureLoader(Desk1, this).gettexture(); Outside01 = new java.net.url(getcodebase().tostring() + images/outside.jpg ); catch (java.net.malformedurlexception ex) scene3d.outside01 = new TextureLoader(Outside01, this).gettexture(); Outside02 = new java.net.url(getcodebase().tostring() + images/outside02.gif ); catch (java.net.malformedurlexception ex) scene3d.outside02 = new TextureLoader(Outside02, this).gettexture(); Airbus01 = new java.net.url(getcodebase().tostring() + images/airbus01.gif ); catch (java.net.malformedurlexception ex) scene3d.airbus01 = new TextureLoader(Airbus01, this).gettexture(); Picture01 = new java.net.url(getcodebase().tostring() + images/picture01.jpg ); catch (java.net.malformedurlexception ex)

12 Appendix D scene3d.picture01 = new TextureLoader(Picture01, this).gettexture(); Picture02 = new java.net.url(getcodebase().tostring() + images/picture02.jpg ); catch (java.net.malformedurlexception ex) scene3d.picture02 = new TextureLoader(Picture02, this).gettexture(); Picture03 = new java.net.url(getcodebase().tostring() + images/picture03.jpg ); catch (java.net.malformedurlexception ex) scene3d.picture03 = new TextureLoader(Picture03, this).gettexture(); Picture04 = new java.net.url(getcodebase().tostring() + images/picture04.jpg ); catch (java.net.malformedurlexception ex) scene3d.picture04 = new TextureLoader(Picture04, this).gettexture(); Vlabposter01 = new java.net.url(getcodebase().tostring() + images/vlabposter01.jpg ); catch (java.net.malformedurlexception ex) scene3d.vlabposter01 = new TextureLoader(Vlabposter01, this).gettexture(); Vlabposter02 = new java.net.url(getcodebase().tostring() + images/vlabposter02.jpg ); catch (java.net.malformedurlexception ex) scene3d.vlabposter02 = new TextureLoader(Vlabposter02, this).gettexture(); Vlabname = new java.net.url(getcodebase().tostring() + images/vlabname.gif ); catch (java.net.malformedurlexception ex) scene3d.vlabname = new TextureLoader(Vlabname, this).gettexture(); C = new java.net.url(getcodebase().tostring() + images/c.gif ); catch (java.net.malformedurlexception ex) scene3d.c = new TextureLoader(C, this).gettexture();

13 0 Ko & Cheng OK = new java.net.url(getcodebase().tostring() + images/ok.gif ); catch (java.net.malformedurlexception ex) scene3d.ok = new TextureLoader(OK, this).gettexture(); d.9 defining countdown timer object for GIvInG remaining time for main applet class timerfield extends JTextField implements Runnable private boolean running = false; private Thread timerthread; public timerfield(int col) setcolumns(col); seteditable(false); //setbackground(color.white); //setbounds(1, 1, 20, 20); running = true; timerthread = new Thread(this); timerthread.start(); public void run() int min, sec; String minute, second; long starttime, currenttime; starttime = System.currentTimeMillis(); while (running) currenttime = System.currentTimeMillis(); min = Math.round((currentTime - starttime) / 60000L); sec = Math.round((currentTime - starttime - min * 60000L) / 1000); minute = Integer.toString(min); second = Integer.toString(sec); if (minute.length() < 2) minute = 0 + minute; if (second.length() < 2) second = 0 + second; settext( +minute+ : +second);

14 Appendix D if (min==29&&sec==59) if (scene3d!=null) scene3d.closeall(); running = false; timerthread.sleep(1000); catch (Exception ie) System.out.println( Interrupted Exception! ); d.10 entry for main applet // The following allows it to be run as an application as well as an applet public static void main(string[] args) new MainFrame(new Oscilloscope(), 1024, 600);

Introduction. Introduction

Introduction. Introduction Introduction Many Java application use a graphical user interface or GUI (pronounced gooey ). A GUI is a graphical window or windows that provide interaction with the user. GUI s accept input from: the