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VrmlPad 2.0 User's Guide

1. VrmlPad v 2 0 User s Guide Copyright 1999 2002 ParallelGraphics Contents OVERVIEW 0 1 About Vrm PA ass aie eta a eat ARE is etui Eos 1 Product Feat reS tcc art ute i anit eumuaet 1 New Features in VrmlPad 2 0 2 New Features in VEmIPad 19 4 iso mr Cep terere odios 3 Available dass pietas hdi quii qe eii nan en cfe eig pudo qe uices 4 Material eas e set oe eee Pacey Meee Pn Cerri eee Pare ere ee ere Pere atu re ere re NC A 4 Fini FUSS MMC m 4 Fields validation MAG eec a egi a Oa Ers ER en ea e ER raie rare EA 3 CEA RA ME RA PARA 5 Sample macros s c setembre tei n LH sciet e RS aA I so i M EL UA T LIA LEE 5 XITUSION S TILO asser ttp tod db o id A nea be te esc lata poca ltd ae ME ne tn Rip 5 About VIN oco aos eta Edid tton edat o mec E d pdt ue 6 Ipsis qM LEES 6 Gharaeterisucs OF VRME nn tr eat E Ease cus cad e cru a PUE P Fal etra a dee 7 SCOP e 7 Introduction to the VrmlPad Automation 8 TEXT EDITOR nn ne H T 10 Overview Text Editor EE SR RER Re te Et 10 Syntax Coloring osten m e pide fe PA nn anne t 10 PUTTS OITA STS Mr C om 11 Error ior SSII ESPERE 12 Node Folding eoe e Ebo atn Dian ide doctus deside ona ts 13 Finding Text ES aU NC cc M D HAERES 14 Reg lar EXDIessiOtiSss ten veles A e Ea i e ae 15 File Navigations serene a ae a EE et tn 16 Using Drag and Drop EditmQs ess nue Me ent han ee oder tue
2. AlFies To open VRML file in VrmlPad 1 Navigate to the drive and directory you want to access 2 Double click on a folder to display its files 3 Double click on a file to open it in the editor Tip To have the File List use single click to open a file select Single click to open a file point to select on the File List tab in the Options dialog box Tip To open a file in a new instance of VrmlPad hold Shift key while opening the file You can set the file list to show specific file types The filter is a global setting for all directories To filter the file list 1 Open combo box at the bottom of the File List 2 Select a file type from the list The file list refreshes to apply the filter Using Drag and Drop in the File List Drag and drop in the File List works like in Windows Explorer you can drag files from and to the File List using left and right mouse buttons and CTRL or ALT keyboard modifiers In addition you can insert links to files in the Text editor using drag and drop like in the Resource View To create a link to a file in the Text editor 1 Select the file you want to link to 2 Drag the selected file to the location in the Text editor 29 File List When the pointer is over a place where the resource link can legally be inserted dimmed caret appear if you release the mouse button at that spot a new link to the resource is inserted there Depending on the place you dropping the
3. Select the Editor tab In the Options box unselect Highlight language syntax checkmark Click OK A D AutoComplete The Complete command Ctrl Space opens a dropdown list box in the Text editor that contains the VRML identifiers keywords PROTO node and field names fields types appropriate to the grammatical context at the current caret position To have the list box automatically open as you type your code select Auto list identifiers on the Editor tab in the Options dialog box You can find the identifier you want in the list box by e Typing the name As you type the identifier that matches the characters you type is selected and moves to the top of the list e Using the up and down arrow keys to move up and down in the list e Scrolling through the list and selecting the identifier you want You can insert the identifier into your code by e Clicking the identifier e Selecting the identifier and pressing SPACE or ENTER to insert the selection 11 Text Editor DEF TOUCH TouchSensor enabled IS soundEnabled CylinderSensor DEF Directionallight Fog Group Inline ISBPicture LOD n n ctiverrame You can also type Ctrl Space after a node or PROTO identifier The command adds braces after identifier inserts empty line and sets there the caret After a field declaration or definition the command inserts default field value Error Processing As you type VrmlPad can automatically check y
4. console text text console startTime val structure and state of your code To change colors used for syntax coloring 1 From the Tools menu choose Options 10 Text Editor Select the Format tab In the Font box select the font you want The Font box displays the different fixed pitch fonts installed on your system The text sample in the Sample box changes to the font you select 5 n the Size box select the size to be used with the font you selected The Size box displays the sizes available for the selected font The text sample in the Sample box changes to the size you select In the Colors box select the type of text you want to color In the Background box select a background color In the Foreground box select a foreground color The Background and Foreground boxes display the standard colors the Custom setting and the Automatic setting The text sample displayed in the Sample box changes to the color you select The behavior of the Automatic setting depends on the element selected For colors that map to standard system elements such as Text or Selected Text the Automatic setting sets the element to the appropriate system color For syntax coloring elements and other non system defined colors the Automatic setting indicates that the foreground color or background color from the parent category is to be used 9 Click OK To disable syntax coloring From the Tools menu choose Options
5. enabled false loop true startTime 1002203114 81 t stopTime 0 cycleTime 1002209115 1609999 fraction chan 0 781000018119812 is ctive false 1002209115 591 wait 1 output 1002209115 1609999 delay 0 proxy DEF PS ProximitySenso El proxy size 223738 2 200000047683716 3 700000047683716 3 79999995231 6284 Math sin i 0 8414709848078965 Context Box The Context Box contains the current call stack in a drop down list box Use this list to specify the current scope of the variables displayed This procedure changes the view of the code displayed in the Text editor the Variables window and other debugger windows but does not change the next line of execution or the value stored in the program counter 35 Script Debugger Variables Window The Variables window provides quick access to variables that are available in the current context and displays the variables that are local to the current function interface fields and outgoing events of the Script node and global variables The Variables window contains a spreadsheet with fields for the variable name and value The debugger automatically fills in these fields You cannot add variables or expressions to the Variables window you must use the Watch window but you can expand or collapse the variables shown using the tree controls You can expand an array or object variable in the Variables window if it has a plus sign box in the Name field If an ar
6. download the manual into your PC and redirect VrmlPad on it To change a Node Help source ak D From the Windows Start menu choose Run In the Open box type regedit and click OK Open registry key HKEY CURRENT USER Software ParallelGraphics VrmlPad Settings Create a new string value named NodesRef Specify in this value full path to your downloaded manual for example CAVRML Spec partt nodesRef html What are the ways I can access the VrmlPad object model You can access the VrmlPad object model in three ways 47 Write VBScript or JavaScript macros that script VrmlPad through its object model Create add ins In ActiveX enabled applications write an Automation controller that accesses VrmlPad by creating an instance of it For example in Visual Basic use the CreateObject function to create an instance of VrmlPad Or in C call the Win32 CoCreatelnstance function For more information see the application s documentation Hints and Tips How to automate VrmlPad from another application With Automation you can control VrmlPad from other applications such as Word Excel or Visual Basic You can start VrmlPad automate VrmlPad tasks and then stop VrmlPad when the tasks are finished To start VrmlPad from another application create an instance of the VrmlPad Document object For example to start VrmlPad from Visual Basic or Visual Basic for Applications use the following code Dim doc
7. in VrmlPad for instance containing PROTO declarations with empty bodies These PROTOs should describe your VRML extension names of the additional node types field names categories and types Note Actually a set of the standard VRML97 nodes implemented internally in VrmlPad as a hidden VRML file To open it in the editor type Ctrl Shift N Save the file somewhere From the Tools menu choose Options Select the General tab Select Enable VRML extensions checkbox Type in the Source field path to the saved file or browse it using a button at the right of the field Click OK Restart VrmlPad How to change a set of the standard nodes To change a standard set of node types using VrmlPad 1 2 3 Press Ctrl Shift N to load the standard nodes as PROTO declarations Make all changes you want to Save the file somewhere 46 Hints and Tips nost From the Tools menu choose Options Select the General tab Select Enable VRML extensions checkbox Type in the Source field path to the saved file or browse it using a button at the right of the field Select Ignore all standard node types checkbox Click OK 10 Restart VrmlPad How to change a source of the Node Help Help for the standard VRML97 nodes is available through the Help for Current Node from the Help menu By default VrmlPad uses remote HTML manual http www web3d org technicalinfo specifications vrml97 part1 nodesRef html but you can
8. or field to go to where it is referenced e ROUTEs type or select the known node and field names to go to where it is routed To use the Go To dialog box 1 From the Edit menu choose Go To 2 In the Go To what box select the type of item you want 3 Enter any additional information required 4 Click one of the navigation buttons Go To Previous or Next Tip To quickly jump to definition of an identifier PROTO node or field name under the caret position type Ctrl F11 To jump to an identifier reference type F11 16 Text Editor About Bookmarks You can set bookmarks to mark frequently accessed lines in your source file Once a bookmark is set Ctrl F2 you can use menu or keyboard commands F2 and Shift F2 to move to it You can remove a bookmark when you no longer need it Ctrl F2 again Using Drag and Drop Editing Drag and drop editing is the easiest way to move or copy a selection of text within a file between files or between applications The text you drop remains selected which makes it easy to copy a chunk of text into several places To move text using drag and drop editing 1 Select the text you want to move 2 Drag the selected text to the new location Note You can also use the right mouse button for drag and drop editing Select the text you want and then use the right mouse button to drag the text to a new location A shortcut menu appears asking if you want to move or copy the selected t
9. As Object Set doc CreateObject VrmlPad Document In Visual Basic you can use the VrmlPad type library to access the VrmlPad object model To do this from the Project menu choose References and select the Vrm Pad Application Library checkbox Dim doc As VrmlPad Document Set doc New VrmlPad Document When VrmlPad starts it will be invisible unless you make it visible by using the Visible property of the Window object Dim doc As VrmlPad Document Set doc New VrmlPad Document doc Window Visible True After starting VrmlPad you can automate tasks in it by using the appropriate code For example in the following code a Worldinfo node is added to the created document Dim doc As VrmlPad Document Set doc New VrmlPad Document doc Window Visible True doc RootNodes Add WorldInfo info Created by me After completing your VrmlPad tasks you can stop VrmlPad releasing all references to the Document object If you use Visual Basic to automate VrmlPad Visual Basic automatically releases all references to the Document object Note If the user tries to stop VrmlPad while your program is controlling it VrmlPad will remain in memory but the user interface will become invisible If this happens release all references to the Document object so that VrmlPad can quit 48
10. Find options Click the Find button to begin the search To open a file containing a match double click the entry in the list below O O1 BR D Overview Fields validation macro The Fields Validation macro checks scenes for conformance of various field values to the VRML97 specification Among of about 100 tests performed by the macro are checks for the field type compatibility fields should contain nodes or PROTOs of correct type increasing interpolators key values ratio of key to keyValue entries relationship between coord coordindex texCoord texCoordindex color colorlndex normal normallndex values Color values being in range 0 to 1 etc To validate fields e From the Tools menu choose Validate Fields Sample macros Sample macros include useful commands for enumerating faces in IndexedFaceSet nodes completing selected nodes with all fields and converting the Box Cone and Cylinder nodes to an IndexedFaceSet etc Macro Description Complete All Inserts all fields of the selected node with default values Go To Node Prompts for a node name and selects the specified node Count Faces Enumerates all faces in the scene and in the selected faceset WrapNodeBy Wraps the selected node by Group Transform or Anchor nodes ConvertToFaceset Converts selected Box Cone or Cylinder node to IndexedFaceSet ScaleFacesets Scales all facesets in the selected PROTO or the scene If you have not installed the macros
11. Runs the Cortona VRML client and enters break mode before the first line of vrmiscript code is executed Keyboard shortcut F8 Run to Cursor Runs the Cortona VRML client as far as the line that contains the insertion point This is equivalent to setting a temporary breakpoint at the location of the insertion point Keyboard shortcut Ctrl F8 When you begin debugging the Debug Windows appear and you can control the program execution using the commands listed in the following table Go Executes code from the current statement until a breakpoint is reached or an user stops or breaks the execution Keyboard shortcut Shift F5 Restart Restarts the Cortona VRML client and discards the current values of all variables breakpoints and watch expressions still apply Keyboard shortcut Ctrl F5 Break Stops execution of the VRML client while it s running and switches to break mode Any statement being executed when you choose this command is displayed in the Text editor with in the left margin if you have checked Show selection margin in the Editor tab of the Options dialog box If the VRML client is waiting for events in the idle loop no vrmiscript statement is being executed no statement is highlighted until an event occurs 33 Script Debugger Keyboard shortcut Ctrl Break Note Editing changes made in the break mode may require you to restart the VRML client for the changes to take effect Break in Script Runs the VRML c
12. VRML scene and at run time to run it This chapter introduces break mode which suspends the execution of vrmiscripts so you can examine and alter data The VrmlPad title bar always shows you the current mode The characteristics of the three modes are listed in the following table Mode Description Edit time Most of the work of creating a VRML scene is done at edit time You cannot execute code or use debugging tools except for setting breakpoints From the Debug menu choose Go or click the Go button to switch to run time If your VRML scene contains vrmlscript code that executes when the scene starts choose Step Into from the Debug menu or press F8 to place the VRML viewer in break mode at the first executable script statement Run time When a VRML viewer takes control you interact with the VRML scene the same way a user would You can view code but you cannot change it From the Debug menu choose Stop Debugging or close the VRML viewer window to switch back to edit time Break mode From the Debug menu choose Break or Break in Script click the Break button or press CTRL BREAK to switch to break mode Execution is suspended while running the VRML viewer You can view code examine or modify data restart the VRML viewer end execution or continue execution from the same point You can set breakpoints at edit time but other debugging tools work only in break mode At edit time you can change the code of a VRML scene but
13. VRML text comments or blank lines A line of code in which a breakpoint is set appears in the colors specified in the Format tab of the Options dialog box Keyboard shortcut F9 Clear All Breakpoints Removes all breakpoints in your files You cannot undo the Clear All Breakpoints command Show Next Statement Highlights the next statement to be executed Use the Show Next Statement command to place the cursor on the line that will execute next Quick Watch Displays the Quick Watch dialog box with the current value of the selected expression Use this command to check or modify the current value of a variable property or other expression for which you have not defined a watch expression Select the expression from Text editor and then choose the Quick Watch command To add a watch expression based on the expression in the Quick Watch dialog box choose the Add Watch button Keyboard shortcut Shift F9 34 Script Debugger Modules Displays the Modules dialog box with loaded to VRML client files Script nodes and vrmiscript functions Debugger windows Several specialized windows display debugging information for your code When you are debugging you can access these windows using the View menu In addition to windows the debugger also uses dialog boxes to display debugging information EL Se at Br onPulse false 1002209115 59 Variables false 1002209115 591 E timer DEF TM TimeSensor cyclelnterval
14. as a unit and then steps to the next statement in the current procedure Step Out Execute the remainder of the current procedure and break at the statement following the one that called the procedure 32 Script Debugger When the VRML viewer is in break mode you can use the Run to Cursor command to select a statement further down in your code where you want execution to stop This lets you step over uninteresting sections of code such as large loops Note When you are trying to isolate a problem remember that a statement might be indirectly at fault because it assigns an incorrect value to a variable To examine the values of variables and properties while in break mode use the Variables window Quick Watch or the Immediate window Debugger commands Commands for debugging can be found on the Debug menu the View menu the Debug Windows toolbar and the main toolbar To start debugging choose the Go Run Embedded Step Into or Run To Cursor command from the Debug menu The following table lists the Debug menu commands that may appear and their actions Go Runs the Cortona VRML client until a breakpoint is reached Keyboard shortcut Shift F5 Run Embedded Starts Microsoft Internet Explorer and runs specified HTML page local or remote with an embedded through tags lt OBJECT gt or lt EMBED gt Cortona VRML control Executes scripts until a breakpoint is reached or an user stops or breaks the execution Step Into
15. c2ccccc ccce nananana nananana nadana nananana ecce ecce 39 The Basics of PUBISHING uicem ot enone RE LE eR ete D RD ER do ee dE 39 Setting Up the DESTINATIONS mere tror eng tiem rue rene nee emi RI perat 39 Choosing Additional Resource Directories ssseseeeecnneeeeeeeennn 39 Excluding Files from Publishing ro nn Re eta vd eds tn xen 40 VRML Optimization Options 2e nt Ge ee OA ee Red re uae aoupes 40 Specifying Directory Organization occ terree tee leads chet ee uec ete ed a RE RE c a qe 41 Reviewing the Directory Structure ss 41 Previewing Published Documeaents e rias cesset utet bo cheer Doleo etaed dee uad 41 HINTS AND TIPS 25m estos pant ita an re 42 How to compress a VRML TIG Rennes donate portent doo qeeta tentes rate Peas d 42 How to download a VRML file from the Net 42 How to upload a VRML file to a remote server 43 How to quickly find the definition reference of an identifier 43 How to insert a pair of node or PROTO braces ssssssemeene 44 How to insert default field value cce eios eoe ect artistes eo tyr oett Seer Meet 44 How to indent a block Ole coo coto oe Reto eco ER rtc pa da tees 44 How to comment a block of lines or an entire node 44 How to locate a syntax or semantic error 45 How to make a VRML file smaller 45 How to expose a field to a PROTO interface 45 How to register a VRML extension ote oret petere hr rre reper rues dec tenter
16. during initial installation of VrmlPad run the VrmlPad installation pack again select the Sample macros checkbox and click OK Extrusion Editor Extrusion Editor Extrusion Editor a visual plug in for VrmlPad offers Spine Cross Section Texture Parameter you an effective method for creating and editing existing extrusion models Extrusion Editor is not included in the VrmlPad installation pack The trial version is available from the page http www parallelgraphics com products vrmlpad extrusioneditor download Key Features e Drawing a series of connected vertices one by one e Drawing Bezier curves spline curves Overview e The use of pre defined forms rectangle diamond octagon triangle oval etc e Move scale flip and rotate the spine and cross section e Browse for move scale and rotate the texture e Assemble extrusions in complex models and perform editing operations on the group of shapes e Manipulate extrusion parameters edit the material and control the smoothness of the surface e Immediate preview changes in the 3D window e Add new extrusions to the library of extrusions and insert their code into VrmlPad s text editor e Full VRML97 compliance Limitations in the trial version e 30 day evaluation period e You cannot save an extrusion or a group of extrusions if the number of segments in the spine is over 15 See also http www parallelgraphics com products vrmlpad e
17. for the debugger to stop at a breakpoint or Click Break or Break in Script on the Debug menu to halt the debugger 2 On the Debug menu click QuickWatch 3 Type or paste the variable name or expression into the Expression text box 4 Click Close Tip The Expression drop down list box contains the most recently used QuickWatch expressions To view the value of a variable using QuickWatch 1 When the debugger is stopped at a breakpoint switch to a source window and click the right mouse button on a variable or selected expression Var for example 2 On the shortcut menu click QuickWatch Var 3 Click the Recalculate button 4 Click Close To view a variable or expression in the Watch window 1 Start debugging and pause the debugger in break mode program is waiting for user input after completing a debugging command 2 Type paste or drag the variable name or expression into the Name column on the Watch window 3 Press ENTER if typing The Watch window evaluates the variable or expression immediately and displays the value or an error message To view a variable in the Variables window 1 Start debugging and pause the debugger in break mode program is waiting for user input after completing a debugging command 2 Find the variable in the Name column and view its value To view a variable or expression in the Immediate window 1 Start debugging and pause the debugger in break mode program is wai
18. of the resource type with the url field defined 27 Resource View translation U 3UUU U rotation 1 0 0 17 children E Building wr Inline Shape Supercar wl Inline appearance Appearance text Shuttle wrl Inline ideni cloud3 gif ImageT exture mmm To copy resource file to an another application 1 Select the resource you want to copy 2 Dragthe selected resource to the application If you use your right mouse button to drag a menu appears with the available options To open VRML resource in VrmlPad 1 Select the VRML resource you want to open 2 Drag the selected resource to the title bar of VrmlPad If you drop a remote resource VrmlPad automatically downloads it from the Net 28 File List File List Overview File List The File List displays drives folders and files accessible from your PC The right click menu contains file handling commands and you can open Windows Explorer directly to create folders run searches etc 4 AmericanGothic fe Code fire way e american gothic 2 wrl sm marble darkrose jpg american gothic 2 new wl BE stone darkrose pg brick deep darkjpg ee wind way SE brick_gray ipa f wood_board01_dark jpg brick red pg Bn wood boards dark pg brick_red_dark jpg mm wood grain dark ipg m concrete wall darkrose pg sm wood grain knots jpg concrete wet darkrose pg nm wood grain light jpg 4
19. resource only URL string may be inserted or also a node of the resource type with the url field defined In the case of VRML files a pull down menu appears you can choose between an Inline Anchor or EXTERNPROTO declaration i Refer to Prototype field SF Nod paras field SFNod M tea2_re diffeq EXTERNPROTO WATER avnnreadFs214 Crp 30 Script Debugger Script Debugger Overview Script Debugger VrmlPad incorporates an integrated script debugger to help locate bugs in interactive VRML scenes Debugging is the process of correcting or modifying the inline vrmiscript code in your VRML scene so that your scene can run smoothly act as you expect and be easy to maintained To this end VrmlPad provides a variety of tools to help with the varied tasks of tracking down errors in the code The debugger interface provides wrapper for the Cortona VRML client special menus windows dialog boxes and spreadsheet fields Drag and drop functionality is available for moving debug information between components Occasionally the debugger is paused in break mode meaning the debugger is waiting for user input after completing a debugging command like break at breakpoint step into over out to cursor break after Break command or Restart Edit Time Run Time and Break Mode To test and debug a VRML scene you need to understand which of three modes you are in at any given time You use VrmlPad at edit time to create a
20. text of runtime nodes corresponds to value of an expression Overview Fields validation macro The macro validates conformance of field values to the VRML97 specification Some of about 100 checks performed by the macro verifies node fields contain correct type of node or PROTO increasing interpolators key values ratio of key to keyValue entries correct relationship between coord coordindex texCoord texCoordindex color colorlndex normal normallndex Color values being in range 0 to 1 and more Search In Files add in The Find in Files window enables you to perform advanced text search in multiple VRML files a time including compressed files Literal text strings or regular expressions to find words or characters can be used in this command See also New Features in VrmlPad 1 3 New Features in VrmlPad 1 3 Multiple documents Now you can open multiple files in the same instance of VrmlPad select between them by using the tabbed Document Bar and Ctrl Tab hotkey find and replace text in all opened files Using the pull down Document List you can browse opened files and VRML dependencies inlines anchors and EXTERNPROTOs of the active document Routing Map The Routing Map displays routes of your scene and lets you browse and edit connections between events and exposed fields in your scene Also you can more quickly add new routes to a scene using new Add Route dialog VRML extension node libraries Now you can
21. use the latest VRML extension nodes from Web3D consortium ParallelGraphics Blaxxun GeoVRML etc VrmlPad supports semantic and publishing rules for the extension nodes and optionally insert appropriate EXTERNPROTO declarations for these nodes The list of node libraries can be updated online Also you can use your own custom set of extension nodes To turn on some node extension select appropriate checkmark from the Node libraries list at the General tab of the Options dialog box and restart VrmlPad New automation objects Additional automation objects have been included Documents and VrmlMatrix The Documents collection represents all open workspace documents The VrmlMatrix object provides many useful methods for performing manipulations on 4x4 matrices AutoComplete feature in inline scripts In addition to list interface fields and events of a Script node the Complete command Ctrl Space now shows subfields of SFNode and MFNode fields if possible and lists names of standard VRML script objects properties and methods Line numbering Additional margin at the left side of Text editor displays line number for every line of a document To turn on line numbering select Show line numbers checkmark at the Editor tab of the Options dialog box Overview More Unused Identifiers Now the Unused Identifiers dialog box shows also redundant duplicated field definitions and duplicated routes Improved performance VrmlPad now p
22. 17 Editor Commands and Keystrokes ccccceeeeeeeeceeceeeeeeeeenaeeeeeeeeeeeeegesaaeeeeeeeeeeenaaaaes 17 Sjei zklicicm c 20 Overview Scene MET 20 Scene Tree Navigallon eer t e diee ate i red a eae det en nex ERE d eat 21 Moving Copying and Cloning Nodes within the Scene Tree ssssssssss 21 Naming Nodes in the Scene Tree 22 ROUTING AP m 24 Ovendew ROUTING Maps shine tunnel nina 24 Manadirig ROUES iet ER PE Seo Et CIN 24 RESOURCE VIEW dec ner bietaletbnri cu ccu x du age nent EE 26 Overview Reso rc VIGW assise oh mensuelle 26 Managing RESOUICES orc nn re nee e t Rub crc ER 26 Using Drag and Drop in the Resource View 27 FILE LIST e 29 Overview File LISE at nee cred cxt cede eode Dre SEP c opo ea Eg 29 Using Drag and Drop in the File List 29 SCRIPT DEBUGGER cM dose 31 Overview Script DOD GO sre rence eere ie qo Sto p b ne ves SUm rt b qo Sae n te HE Eger deti u 31 Edit Time Run Time and Break Mode 31 Debugger commands coe cea Rene St oro tas E he nr Seda re bas ER pete ene 33 Debugger windows rta e Pee ed d ete Pea a Ead Fee Un e e re ex ee 35 Spreadsheet Fields rrr tree edere REUS Mel gehen bo da erc RR xke eee edel ene 36 Viewing the Value of a Variable 37 Modifying the Value of a Variable 38 PUBLISHING WIZARD 22 c
23. L client special menus windows dialog boxes and spreadsheet fields Drag and drop functionality is available for moving debug information between components Occasionally the debugger is paused in break mode meaning the debugger is waiting for user input after completing a debugging command like break at breakpoint step into over out to cursor break after Break command or Restart New Features in VrmlPad 2 0 Integrated Script Debugger Now you can use debugging features that are collectively referred to as integrated script debugger These features let you find and fix errors in the inline vrmlscript code in your VRML scenes and on HTML pages with embedded Cortona controls The integrated script debugger is a full featured debugger that enables you to e Control the execution of your script including pausing the execution running to a cursor or a breakpoint location stepping through code e Monitor the state of script data including the current call stack variables arrays and objects that are available in the current context evaluate expressions containing these data items e Modify the values of variables arrays and objects in your script during a debugging session e Add new procedures to your script during a debugging session as you would in code e Examine and modify on the fly data items in the script using the Quick watch window e Use CodeTips for quick viewing of variables values in the script e Examine full VRML
24. Open Folder to open the destination directory with your files using Windows Explorer window If you have chosen publishing to the net or through e mail in the first step click Next to launch Microsoft Web Publishing Wizard or mail sender Otherwise click Close to finish publishing 41 Hints and Tips Hints and Tips How to compress a VRML file Compressed files download faster and use less disk space so use of this feature is recommended Most browsers automatically decompress files that have been compressed To compress an existing VRML file From the File menu choose Open Select your file Click OK Change the compression level if you like as written below From the File menu choose Save As Select Save compressed checkbox Enter or select a destination file name Click OK To change default compression level ON OAR WD 1 From the Tools menu choose Options Select the General tab Use the Default compression drop down list to select the compression level e Maximum best compression but lowest speed of compression e Normal balance between speed and compression quality e Fast fastest speed but poor compression quality 4 Click OK To compress a file without using the Save As dialog box 1 Double click the pane GZ in the status bar at the bottom of VrmlPad window 2 From the File menu choose Save or type Cirl S How to download a VRML file from the Net If you are using down
25. Put all source files in one directory This is the best choice if your world uses only a few files Arrange source files in subfolders depending of its type Use the resource type based directory structure This is the best choice if you have a complex multi file world Retain the same directory structure used by the source files Use the same directory structure that your source files use This is the best choice if you have a complex multi file world stored in a set of nested directories In line resources as base64 encoded data Include resources of specified types into VRML files body excluding it from the list of publishing files VRML files with in lined resources are currently supported only by Cortona VRML viewer Click Next when you re done or Back to return to the previous Wizard step Reviewing the Directory Structure In this step you review the directory structure This dialog lists every file that will be placed in the destination directory If the files don t have the names and locations you expect click Back to go back to the mappings dialog Click Next when you re done or Back to return to the previous Wizard step Your files are set up for final publishing when you click Next so you can t turn back to previous steps from this point Previewing Published Documents The final step of the Publishing lets you preview the published world immediately Click Preview to preview the world in your default browser Click
26. U Ctrl V Ctrl X Ctrl Y Ctrl Z Ctrl Ctrl Shift Ctrl Space Ctrl Shift Space Tab Shift Tab Ctrl Tab Ctrl Shift Tab Backspace Ctrl Backspace Del Ctrl Del Left Arrow Toggles a bookmark for the current line on and off Finds the next occurrence of the specified text Finds the previous occurrence of the specified text Finds the next occurrence of the selected text Finds the previous occurrence of the selected text Finds the specified text Moves to the line containing the next error or warning Moves to the line containing the previous error or warning Closes the active document Preview the document using default Web browser and VRML viewer Displays an identifier definition Displays an identifier reference Selects the entire document Copies the selection to the Clipboard Comment or uncomment the selected lines Marks a node or a field at the caret position as a route source Activates the Find tool Formats the selection using the smart indent settings Moves to a specified location Deletes the selected lines and puts them on the Clipboard Marks a node or a field at the caret position as a route target and opens Add Route dialog box Synchronize the caret position with a selection in the Scene Tree Replaces spaces with tabs in the selection Shows or hides tab characters Makes the selection all lowercase Makes the selection all uppercase Inserts the Clipboard contents at the insertio
27. ach PROTO interface declaration the Scene Tree displays e An PROTO icon 13 e The name of the PROTO For each field declaration or definition the Scene Tree displays e An icon indicating the field type and category for exposedField SFNode BI for eventin SFFloat Ml and so on ISed fields are indicated with the link mark ma above the field icon e The name of the field children for instance 9 ISBPicture E ISBPictureFrame HJ texNode Shape D appearance 3 8 Appearance L1 J geometry H IndexedFaceSet H E Wordinfo ER Group EI children ER Group 5 IEEE T Viewpoint H Q Transform Vint lt gt Shape M rf To show only nodes and PROTOs in the Scene Tree select Show nodes only on the Tree tab in the Options dialog box 20 Scene Tree Scene Tree Navigation You can see various levels of the hierarchy contained under nodes and PROTOs by clicking the node icon Opening a node refers to expanding the hierarchy beneath it Closing a node refers to collapsing the hierarchy beneath it You can also click a MFNode field icon to toggle it open and see its values To open or close a node PROTO or field e Click the icon to open the item e Click the icon to close the item e Type the button to open all subitems of the selected item To jump to the definition of the selected item PROTO instance nodes clone or field e Choose Go To Definition from the pull down men
28. arses formats and indents unindents text faster than previous version does Available Add ins Material Editor Cue fein U Aes The Material Editor lets you create and edit Appearance and Material nodes You also can choose 3333502300009 existing materials from a pre built library and add your em 39 909 Q Q wn materials toit 2000000000 9200000000 Coke settings Book fo 4 hH BS Ae 6 snae ih FPE Geen C speci c Mena propier ORB ert niens ane j per hms Ce Jooo F Tomipserncy Cancel j Find in Files The Find in Files add in enables you to perform Foiwhe eee En ipi e I advanced text search in multiple VRML files a time aux EXER mer including compressed files Literal text strings or Bl Machado mordor E Lo in p ter regular expressions to find words or characters can be 7 Mach gom D Aegis prenin Abou used in this command CE DEF tree m ie Tr Sera 75 DEF te Tear 484 DEF ma cos TaneSenior floop 255 OCF IM Tre Sens C DEF doof ime Tee Semet 71 DEF Roel Term Times enno 65 fuifSFNoSe DEF TH Tem S 313 DEF te Tw serior 15109 DEF _Piturefiner liveGerocrt v 17 fies found To find a text string in multiple source files From the Tools menu choose Find in Files In the Find what box type the search text or a regular expression In the In folder box select the folder that you want to search If necessary select one or more of the
29. ckbox To disable node folding 1 From the Tools menu choose Options 2 Select the Editor tab 3 In the Options box unselect Allow node folding checkmark 4 Click OK 13 Text Editor Finding Text With the advanced find and replace capabilities of the Text editor you can search for literal text strings or use regular expressions to find words or characters A regular expression is a search String that uses special characters to match a text pattern in a file You can use regular expressions including tagged regular expressions with both the Find and Replace commands With the Find and Replace commands you can e Find text in a document e Replace text in a whole document e Replace text in a part of a document e Use regular expressions To find a text string 1 Move the insertion point to where you want to begin your search The editor uses the location of the insertion point to select a default search string From the Edit menu choose Find or type Ctrl F In the Find what box type the search text or a regular expression Tip Select the menu button to the right of the box to display a list of regular search expressions When you select an expression from this list the expression is substituted as the search text in the Find what box If you do use regular expressions be sure the Regular expression check box is selected You can also use the drop down list to select from a list of up to 16 previous search strin
30. d at the cursor Moves the cursor down one line Extends the selection down one line Scrolls the file contents up one line Expand the node fold at the cursor Moves to either the start of the current line or the start of the text on that line Extends the selection to either the start of the current line or the start of the text on that line Moves to the beginning of the file Extends the selection to the beginning of the file Moves to the end of the current line Extends the selection to the end of the current line Moves to the end of the document Extends the selection to the end of the document Moves the cursor down one page Moves the cursor up one page Extends the selection down one page Extends the selection up one page Toggles between inserting and replacing text Scene Tree Scene Tree Overview Scene Tree The Scene Tree displays VRML hierarchy of your scene and lets you e Browse and edit the VRML hierarchy of your scene e Edit node PROTO and field names e Make precise selections within the Text Editor For each node the Scene Tree displays e Anicon indicating the node type for Transform gt for Shape and so on Each node type has a particular icon that is associated with it Clones multiple instances of a node are indicated with the link mark above the node icon e The name of the node type Transform for instance e The name if any that you ve given to the node For e
31. dit connections between events and exposed fields in your scene For each route the Routing Map displays e Anicon J and a label indicating the PROTO context namespace of the route if available e Icons and labels indicating the source and target nodes Some icons may be shared between two or more routes By default Routing Map displays only node DEF names To show also typenames of nodes select Show node typenames on the Tree tab in the Options dialog box e Icons and labels indicating the source and target fields To show also icons indicating actual field owners for ISed prototype interface fields select Show actual field owners on the Tree tab in the Options dialog box e A colored line indicating the route itself To change a color corresponding to some route type select the route type and desired color in the Route colors box on the Tree tab in the Options dialog box 19 Console Switch SW whichChoice lt Transform TR B rotation i translation 5 ProximitySensor PS E position changed E orientation changed RD enabled x TimeSensor TM ID ishctive Script SC if hit NH choice Managing Routes To set the caret position in the Text editor at a route e Double click the route line To move to the route source or target node or field declaration double click the appropriate icon or label e Choose Go To from the pull down menu right click the route line to see the menu To move to the ro
32. e most common difference among text editors is whether you can move the cursor into a location that does not currently contain text For example if your cursor is on column 20 and there is no text on the line below the current line moving the cursor down can do one of two things Either the cursor moves to column 1 because there is no text on the line below or the cursor moves to column 20 of the next line This behavior is called virtual space With the Text editor you can treat text selection and space insertion in two ways When you select the Virtual Spaces option spaces are inserted between the end of the line and the insertion point before new characters are added to the line When you clear the Virtual Spaces option the Text editor behaves like Microsoft Word for Windows the insertion point is set to the end of the line To enable virtual space 1 From the Tools menu choose Options 2 Select the Editor tab 3 In the Options box select Enable virtual space checkmark 4 Click OK About Go To The Go To dialog box allows you to jump quickly to several different items in a file including e Lines type the line number e Lines in inline scripts type the line number from the beginning of the script and scripts node name e PROTO node and field declarations type or select the name of a PROTO node or field to go to where it is defined e PROTO node and field references type or select the name of a PROTO node
33. e value you want to modify 3 Double click the value or use the TAB key to move the insertion point to the value you want to modify 4 Type the new value and press ENTER To modify the value of a variable in the Immidiate window 1 Type the variable name or l value expression the assignment operator and the new value 2 Press ENTER 38 Publishing Wizard Publishing Wizard The Basics of Publishing Publishing refers to the process of locating all the files necessary to create a document scene or world and organizing the files for publication on a server The Publishing Wizard is also able to put the files on your Web server using Microsoft Web Publishing engine or send it by e mail using MAPI transports Publishing is a one way process Publishing leaves your original files alone but as it makes copies of those files it changes and optimizes those copies Any time you want to change your world reopen the original source files for the world then make changes and republish Don t modify the published copies directly Setting Up the Destination The first step of the publishing process is to choose a destination for your published files If you have already published your scene choose an existing destination directory Later in the publishing process the Publishing Wizard may remove the contents of the directory before creating the new version of the published world If you haven t previously published y
34. eTexture url e3u37metall4 1 gif A geometry IndexedFaceSet X 98 faces To expand or collapse a node fold e Click the icon to expand the fold or icon to collapse e Or set the caret at the folded lines and from the Edit Fold submenu choose Expand or Collapse or press Alt Down Arrow or Alt Up Arrow e Or right click the fold sign and from the pull down menu choose Toggle To expand or collapse all node folds e From the Edit Fold submenu choose Expand All or Collapse All or e Right click any fold sign and from the pull down menu choose Expand All or Collapse All By default a number of lines that can be folded should be at least 20 lines To change the minimum number of lines to fold 1 From the Tools menu choose Options 2 Select the Node Folds tab 3 In the Minimum length of node to fold box type the number of lines Tip Type 0 lines to fold all nodes and prototype declarations 4 Click OK You can define a set of node types that should be hidden normally All nodes of such uninteresting types can be collapsed manually or automatically on scene load or text insertion To define a set of uninteresting nodes 1 From the Tools menu choose Options 2 Select the Node Folds tab 3 Using Add gt gt and lt lt Remove buttons modify a list of nodes in the Uninteresting nodes box 4 To automatic collapse uninteresting nodes select Automatically collapse uninteresting nodes on load and inserts che
35. enr dans 46 How to change a set of the standard nodes ssssseeeeee 46 How to change a source of the Node Help 47 What are the ways can access the VrmlPad object model 47 How to automate VrmlPad from another application 48 Overview Overview About VrmiPad VrmlPad is a powerful and flexible authoring tool from ParallelGraphics that allows you to design and develop professional VRML content Use VrmlPad to create VRML worlds for publishing on the World Wide Web VrmlPad fully supports the VRML 97 specification Product Features IA alka wil VrmlPad amp Bam ParallelGraphics Cortona Script TimeSensor E D Knofsc B Q Shape a appearance hape trupkabanos appearance Appearance i geometry DEF pred Extrusion 4 eS Extrusion pred crossSection 84 0 777 aa 63 40 crossSection spine 0 x22 0 a3 0 25 76 0 ROUTE Paksc barva TO pakba EN TT NENNEN FEE GS I 122 TA on a02 Cab Sty SEM NER aN Era D Editing Access to local and remote files multiple undo redo set bookmarks advanced find and replace syntax tips smart AutoComplete autoindent dynamic node folding customizable keyboard shortcuts 2 Enhanced color coding Customizable by VRML keywords field and node categories G Dynamic errors detecting View and enumerate syntax and wide range of semantic errors and warnings undefined identifiers nonmatched fields duplicated node defini
36. ext Tip At any time during a drag and drop procedure you can click the other mouse button to cancel the operation To copy text using drag and drop editing 1 Select the text you want to copy 2 While holding down the CTRL key drag the selected text to the new location To move or copy text to another document 1 Select the text you want to move or copy 2 Drag the selected text to the document bar and hold it over the document tab 3 After the target document selected drag the text to the new location Editor Commands and Keystrokes You can access Text editor commands in many ways from the menus from the toolbar and from the shortcut menu There are many Text editor commands but not all of them appear on the menus and toolbars The Selection menu available from the Edit menu contains some of the most useful edit commands including Format Indent Unindent Tabify Untabify Make Uppercase Make Lowercase and Comment Use these key combinations in the Text editor window Press To F1 Get context sensitive Help on node type under the caret position F2 Moves to the line containing the next bookmark Shift F2 Moves to the line containing the previous bookmark 17 Text Editor Ctrl F2 F3 Shift F3 Ctrl F3 Ctrl Shift F3 Alt F3 F4 Shift F4 Ctrl F4 F5 F11 Shift F11 Ctrl A Ctrl C Ctrl Shift C Ctrl E Ctrl F Ctrl Shift F Ctrl G Ctrl L Ctrl R Alt S Ctrl Shift T Ctrl Alt T Ctrl U Ctrl Shift
37. gs 4 Select any of the Find options 5 Start the search by clicking the Find Next or Mark All buttons To start a find without using the Find dialog box e Type Ctrl F3 to search a word under the caret position e To continue your search type the Find Next F3 or Find Previous Shift F3 buttons To replace text Move the insertion point to where you want to begin your search The editor uses the location of the insertion point to select a default search string From the Edit menu choose Replace B0 D In the Find what text box type the search text or a regular expression Tip Click the button to the right of the box to display a list of regular search expressions When you select an expression from this list the expression is substituted as the search text in the Find what text box If you do use regular expressions be sure the Regular expression check box is selected You can also use the drop down list to select from up to 16 previous search strings 5 In the Replace with text box type the replacement text Tip Click the button to the right of the box to display a list of tagged expressions you can use as replacement text Select any of the remaining Find options Start the search by clicking the Find Next Replace or Replace All buttons 14 Text Editor Regular Expressions Regular Expression Period cc a w c d v s 15 Description Any single character Any o
38. he Sub statement begins the macro which has the name Create New The name is arbitrary you can use whatever name you choose e The first line of the macro creates a new empty document using the Open method of the Documents object Overview e The second line of the macro adds a comment string and moves the caret to the next line using the Selection property of the Document object e The next line of the macro adds an empty Woridinfo node using the RootNodes collection of the Document object e The next line of the macro adds the info field to the node using the Fields collection of the Node object and sets field s value using the Add method of the Field object e The last line of the macro marks the document as unmodified e The End Sub statement ends the macro After writing the macro copy the macro file to the Addins directory Then select the menu item Create New from the Tools menu to run the macro For more information about VrmlPad objects and writing add ins and macros see http www parallelgraphics com developer products vrmlpad Text Editor Text Editor Overview Text Editor The VrmlPad environment includes an integrated text editor to manage edit and print source files Most of the procedures for using the editor should seem familiar if you have used other Windows based text editors With the Text editor you can e Set and customize syntax coloring for source VRML files e Use AutoComplete for
39. he first page Proceed through the rest of the Publishing Wizard After the last page follow instructions of the Microsoft Web Publishing Wizard For the first time specify path to your FTP server user name and login oc D How to quickly find the definition reference of an identifier To jump to the definition of an identifier PROTO node or field name 1 Position the caret at the identifier in the Text editor or select an identifier in the Scene Tree 2 Select Go To Definition from the pull down menu or type Ctrl F11 To jump to the reference of an identifier PROTO node or field name 1 Position the caret at the identifier in the Text editor or select an identifier in the Scene Tree Select Go To Reference from the pull down menu or type F11 Select Next Reference from the pull down menu or type F11 to jump to the next reference of the identifier 43 Hints and Tips How to insert a pair of node or PROTO braces To insert a pair of braces after node or PROTO name 1 Position the caret to the space after node or PROTO name 2 Type Ctrl Space How to insert default field value To insert a default value after field declaration or definition 1 Position the caret to the space after the field declaration or definition or inside multiple field value 2 Type Ctrl Space How to indent a block of lines To indent a block of lines e Select the lines and then press Tab To unindent a block of l
40. he size of the local resource ee chasemusic3 way AudioClip 1 66KB vespa allipg ImageT exture 4 10KB E lotus allipg ImageTexture 4 10KB E io allipg ImageTexture 1 14KB 0s Allipg ImageTexture 5 12KB 19 Robot wrl Avatar 1 31KB E Movie2a wil Inline 1 164KB Managing Resources You can easily enumerate all links URLs to the resource To set the caret position in the Text editor at a resource URL e Double click the item To move to the next link double click the item again e Choose Select from the pull down menu right click the item to see the menu The list of items in the Resource View may be sorted by URL by type by reference count or by file size To sort list of resources e Right click an empty space or the header of the Resource View The Sort by entries in the pull down menu let you specify the sort order 26 Resource View e Or click on the appropriate portion of the list box header For example click on the word Size in the header to sort by size To reverse the sort order click it again Using the Resource View you can change all links to some resource to the another resource To redirect links to a resource 1 Select the resource you want to relink 2 Press F2 or right click over the resource and choose Rename 3 Type a name in the text box and press Enter or press Esc if you want to leave the text box unchanged To browse for a local resource 1 Right click over the resource and ch
41. ines e Select the lines and press Shift Tab To format a block of lines using the smart indent settings e Select the lines and press Ctrl Shift F How to comment a block of lines or an entire node To comment a block of lines e Select the lines and press Ctrl Shift C To uncomment a block of lines e Select the commented lines and press Ctrl Shift C To comment a node PROTO declaration or field e Select the identifier of a node PROTO declaration or field in the Scene Tree and choose the Comment from the pull down menu or press Ctrl Shift C 44 Hints and Tips How to locate a syntax or semantic error To jump to the first error e Double click on the highlighted error indicator in the status bar at the bottom of the VrmIPad window To jump to the next error e From the View menu choose Next Error or type F4 How to make a VRML file smaller Reducing file size and improving reliability and performance go hand in hand VrmlPad can automatically remove code that is unnecessary redundant or unusable The size reduction is often dramatic and the resulting file is more likely to run consistently across browsers To reduce file size using the Unused Identifiers dialog box 1 From the View menu choose Unused Identifiers In the list below select identifiers you want to remove Click Delete or type Del Note You can savely remove default field values Remove identifiers of the other types with caution s
42. ing all objects in the world the lighting calculations would quickly become intractable Therefore in order to prevent global effects light source objects are scoped by either a maximum radius or by location within the file Another essential characteristic of VRML is that it is intended to be used in a distributed environment such as the World Wide Web There are various objects and mechanisms built into the language that support multiple distributed files including Overview 1 in lining of other VRML files 2 hyperlinking to other files 3 using established Internet standards for other file formats 4 defining a compact syntax See also http www web3d org Specifications VRML97 Introduction to the VrmlPad Automation The VrmilPad Automation provides application programming interface API that enables authors and developers to manipulate the program from external applications using the C C Visual Basic Delphi and scripts within HTML pages In addition power users can now create add ins VBScript and JavaScript macros and execute them from within the VrmlPad environment automating custom tasks VrmlPad macros are procedures you write in the VBScript or JavaScript language and add ins are in process ActiveX components DLLs you write in C C Pascal or Visual Basic Each add in can add one or more commands and each command can perform one or more tasks The number of commands and tasks is up to you If your ta
43. is between processing of events When this happens execution does not stop at a specific line but VrmlPad switches to break mode anyway To break execution at a statement of vrmlscript code choose Break in Script from the Debug menu You can also enter break mode automatically when execution reaches a line with a breakpoint or a statement generates a run time error A breakpoint halts the VRML viewer just before executing the line that contains the breakpoint If you want to observe what happens when the line with the breakpoint executes you must execute at least one more statement To do this use Step Into Step Over or Step Out If necessary you can also skip over statements using Run to Cursor After stepping through each statement you can see its effect by looking the debugger windows Step Mode Description Step Into Execute the current statement and break at the next line even if it s in another procedure When you use Step Into to step through code one statement at a time VrmlPad temporarily switches to run time executes the current statement and advances to the next statement Then it switches back to break mode Step Over Execute the entire procedure called by the current line and break at the line following the current line Step Over is identical to Step Into except when the current statement contains a call to a procedure or a single line loop Unlike Step Into which steps into the called procedure Step Over executes it
44. is step lets you list files that you don t want the Publishing Wizard to include You might want to exclude files that have been previously published files that have been manually checked files you know will already be on the Web server or test files that you don t want to include in the final world Exclude filenames from the publish by selecting them in the list then click Exclude Revert this operation by selecting filenames in the list then click Include Excluded filename are marked by across mark URLs in your document which refer to these files are left unchanged in your documents Click Next when you re done or Back to return to the previous Wizard step VRML Optimization Options This step of the publishing process lets you choose options to optimize your world Pack VRML files using maximum compression Compressed files download faster and use less disk space so use of this feature is recommended Most browsers automatically decompress files that have been compressed To disable this feature click the box to remove the check Remove extra formatting from VRML files Check the box if you want the Publishing Wizard to reformat the VRML files by unindenting lines removing unnecessary whitespaces and empty lines Reformatted files use less disk space but usually lost in human readability Remove comments Selecting this option removes all comments from a file during the reformat Remove default field values Selecting thi
45. it menu or type Ctrl R to open Add Route dialog box 6 Enter if necessary unique names for the source or and target nodes and fill out missing field names 7 Check Insert the route at the caret position if you want to place newly created route near the caret position in Text editor Otherwise the new route will be inserted at the end of the file or the prototype declaration 8 Click OK 25 Resource View Resource View Overview Resource View The Resource View displays dependencies resources of your scene and lets you browse and edit links to the resources For each resource the Resource View displays e An icon indicating the resource type for ImageTexture for AudioClips ud for custom resources J and so on To determine type of the resource the Resource View finds the final declaration unwinding all IS statements of the field or exposed field of type MFString containing the URL to the resource as a first string The type of standard node or PROTO that contain this declaration becoming a type of the resource Remote resources beginning with file protocol or with no explicit protocol are indicated with the link mark above the resource icon Missing local resources are indicated with the cross mark Y above the resource icon e The URL of the resource e The name of the resource type ImageTexture for instance e The reference count to the resource number of links to this resource e T
46. lient until a statement of vrmlscript code is executed Then stops execution and switches to break mode Stop Debugging Stops running the VRML client and returns to a normal editing session Keyboard shortcut Alt F5 Step Into Single steps through instructions in the code and enters each function call that is encountered Keyboard shortcut F8 Step Over Single steps through instructions in the code If this command is used when you reach a function call or single line loop the function is executed without stepping through the function or loop instructions Keyboard shortcut Shift F8 Step Out Executes the code out of a function call and stops on the instruction immediately following the call to the function Using this command you can quickly finish executing the current function after determining that a bug is not present in the function Keyboard shortcut Ctrl Shift F8 Run to Cursor When the VRML client is in break mode use Run To Cursor to select a statement further down in your code where you want execution to stop Your code will run from the current statement to the selected statement and the current line of execution margin indicator appears in the Selection margin Keyboard shortcut Ctrl F8 Toggle Breakpoint Sets or removes a breakpoint at the current line Breakpoint is a selected line of code at which execution automatically stops You can t set a breakpoint on lines containing nonexecutable code such as native
47. load dialog for the first time 1 From the Tools menu choose Options Select the General tab Enter or browse destination directory in the Location for downloaded files box This directory will keep the downloaded files and its resources images audio files scripts etc Specify additional download options Click OK 42 Hints and Tips To download a file 1 From the File menu choose Download or double click the pane WEB in the status bar at the bottom of VrmlPad window 2 Type valid Internet address URL of your file to the Open box or use the drop down list to select previous URLs When you select an URL in this list the URL is added in the Open box 3 Specify additional download options 4 Click OK To download a file without using the Download dialog box e Drag and drop an Internet shortcut from your Web browser to the caption of VrmlPad To cancel downloading e Double click the animated globe in the status bar at the bottom of VrmlPad window How to upload a VRML file to a remote server First of all you should download and install the latest version of Microsoft Web Publishing Wizard from http www microsoft com windows software webpost It automates the process of copying files from your PC to the Web or FTP server To upload a VRML file using Microsoft Web Publishing Wizard Open the file into VrmIPad From the File menu choose Publish Select Publish files to the net options in t
48. n point Cuts the selection and moves it to the Clipboard Redoes the previously undone action Undoes the last action Finds the matching brace Extends the selection to the matching brace Opens a dropdown list box that contains the available identifiers Replaces tabs with spaces in the selection Indents the selection Unindents the selection Activates next document Activates previous document Deletes the selection or if there is no selection the character to the left of the cursor Deletes a word to the left Deletes the selection Deletes a word to the right Moves the cursor one character to the left 18 Text Editor Shift Left Arrow Ctrl Left Arrow Ctrl Shift Left Arrow Right Arrow Shift Right Arrow Ctrl Right Arrow Ctrl Shift Right Arrow Up Arrow Shift Up Arrow Ctrl Up Arrow Alt Up Arrow Down Arrow Shift Down Arrow Ctrl Down Arrow Alt Down Arrow Home ShifttHome Ctrl Home Ctrl Shift Home End Shift End Ctrl End Ctrl Shift End Page Down Page Up Shift Page Down Shift Page Up Ins 19 Extends the selection one character to the left Moves back one word Extends the selection back one word Moves the cursor one character to the right Extends the selection one character to the right Moves forward one word Extends the selection forward one word Moves the cursor up one line Extends the selection up one line Scrolls the file contents down one line Collapse the node fol
49. ne of the characters contained in the brackets or any of an ASCII range of characters separated by a hyphen For example b aeiou d matches bad bed bid bod and bud and r eo d matches red rod reed and rood but not reod or roed x 0 9 matches x0 x1 x2 and so on If the first character in the brackets is a caret then the regular expression matches any characters except those in the brackets The beginning of a line The end of a line Indicates a tagged expression to retain for replacement purposes If the expression in the Find what text box is PROTO OldName and the expression in the Replace With box is M NewName all selected occurrences of PROTO OldName are replaced with PROTO NewName Each occurrence of a tagged expression is numbered according to its order in the Find what text box and its replacement expression is n where 1 corresponds to the first tagged expression 2 to the second and so on You can have up to nine tagged expressions Any one of the characters separated by the alternation symbol For example j u fruit finds jfruit jjfruit ufruit ujfruit uufruit and so on None or more of the preceding characters or expressions For example ba c matches bc bac baac baaac and so on At least one or more of the preceding characters or expressions For example ba c matches bac baac baaac but not bc None or one of the preceding characters or expressions For example ba c matches bc and bac A
50. ny sequence of characters between the escaped braces For example ju fruit finds jufruit jujufruit jujujufruit and so on Note that it will not find jfruit ufruit or ujfruit because the sequence ju is not in any of those strings Any character except those following the caret character in the brackets or any of an ASCII range of characters separated by a hyphen For example x 0 9 matches xa xb xc and so on but not x0 x1 x2 and so on Any single alphanumeric character a zA ZO 9 Any white space characters The w finds tabs and spaces Any single alphabetic character a zA Z Any decimal digit O 9 Any VRML identifier Any quoted string Removes the pattern match characteristic in the Find what text box from the special characters listed above For example 100 matches 100 at the end of a line but 100 matches the character string 100 anywhere on a line Text Editor File Navigation The Text editor provides a variety of methods to move around in a source file In addition to the standard Windows navigation mechanisms the Text editor includes an assortment of commands that enable you to move to almost any location in a file Further in addition to comprehensive GoTo and Bookmarks commands the Text editor includes several advanced navigation features such as virtual space About Virtual Space All editors support moving the cursor by one character position Th
51. ode you want to unname 2 Press F2 or right click over the node and choose Rename 3 Clear the text box and press Enter Note If the node name is in use the Scene Tree warns you about it To rename a PROTO with all PROTO instances of this PROTO 1 Select the PROTO declaration you want to rename 2 Press F2 or right click over the PROTO and choose Rename 3 Typeaname in the text box and press Enter or press Esc if you want to leave the text box unchanged To rename a field declaration with all references to this field 1 Select the field declaration you want to rename Press F2 or right click over the field and choose Rename Type a name in the text box and press Enter or press Esc if you want to leave the text box unchanged 22 Scene Tree Note To prevent renaming field references inside the inlined vrml script body select Disable renaming in a script body check box on the Tree tab in the Options dialog box To remove a node PROTO or field declaration 1 Select the item you want to remove 2 Press Del or right click over the item and choose Delete Note To remove also all references to this item node and PROTO instances routes PROTO field implementations and items within this item press Ctrl Del key or choose Delete from the pull down menu while holding down the CTRL key 23 Routing Map Routing Map Overview Routing Map The Routing Map displays routes of your scene and lets you browse and e
52. ome node names or field declarations may be used by outer scripts EAI or ActiveX components Also some VRML authoring tools may use unnecessary for rendering node names and field declarations for holding additional user interface information such as object names and properties To reduce file size using the Publishing Wizard From the File menu choose Publish In the first page choose copying document to a folder Proceed through the following pages up to the Specify VRML preferences page Select the options you want to nm D Proceed through the rest of the Wizard How to expose a field to a PROTO interface To automatically expose a field 1 Position the caret to the space after the field definition or Script node s field declaration without a field value Type the IS keyword into your code and press SPACE Type Ctrl Space and select one of the choices There are four possible choices in the case of the exposedField e Expose the field as an exposeField declaration 45 Hints and Tips 4 e Expose the field as a field declaration e Expose the field as an eventin declaration e Expose the field as an eventOut declaration stopTime stopTime stopTime changed Press SPACE or ENTER How to register a VRML extension VRML extension is a custom node type in addition to a set of the standard VRML97 nodes To register a VRML extension 1 Pak oO LV N Create a VRML file
53. ontain controls for easy viewing of array and object variables If the variable is an array or object the branch below the variable contains the component elements or properties The variables are marked with a box containing a plus sign in the Name column You can expand the variable by clicking the box which opens into a tree that may contain additional boxes When a variable is expanded the box in the Name column contains a minus sign You can collapse an expanded variable by clicking the box As an alternative you can expand a variable by selecting it and pressing the ENTER PLUS SIGN or RIGHT ARROW key You can collapse a variable by selecting it and pressing the ENTER MINUS SIGN or LEFT ARROW key Scalar variables which have no components to expand do not have boxes in the Name column When working with these fields you can size a column manually by dragging the divider at the right edge of the column 36 Script Debugger Viewing the Value of a Variable The easiest way to see the value of a variable when the debugger is stopped at a breakpoint is to use CodeTips pop up information You can view a CodeTips pop up information box for any variable that appears in a Text editor and is within the current scope To see a pop up box place the mouse pointer over the variable CodeTips pop up information is not available for invalid or undefined variables To view the value of a variable or expression 1 Wait
54. oose Browse Select a resource file you want to link to Check Store absolute path if you want to store absolute URL to the resource Otherwise relative path to the resource will be inserted if possible 4 Click OK To convert absolute path to a local resource to relative and vice versa 1 Right click over the resource and choose Browse 2 Check or uncheck Store absolute path 3 Click OK If the resource has file associations you can open it for previewing or editing using the Resource View To refresh list of resources after external files modification e Right click an empty space or the header of the Resource View Choose Refresh from the pull down menu To open a resource using associated application e Right click over the resource and choose Open or Edit Using Drag and Drop in the Resource View You can easily create a new link to resource using drag and drop in the Resource View You can also move or copy a resource file to an another application Windows Explorer for instance To create a new link to a resource 1 Select the resource you want to link to 2 Drag the selected resource to the location in the Text editor When the pointer is over a place where the resource link can legally be inserted dimmed caret appear if you release the mouse button at that spot a new link to the resource is inserted there Depending on the place you dropping the resource only URL string may be inserted or also a node
55. our document and underline syntax and semantic errors or possible warnings There are three types of errors indicated on the status bar at the bottom of the VrmlPad window e Syntax errors Wrong construction underlines by red wavy line and indicates on the status bar by a red pane labeled SYN e Semantic errors and warnings Missing duplicated or type mismatched identifiers Identifier underlines by red dash line and indicates on the status bar by a blue pane labeled SEM e Nonmatching braces square brackets and double quotes Status bar indicates this error by a green pane labeled NBR ROUTE TH is ctive TO SC hit Active TO PS enabled Expected routed field name i RUU choice TO SW whichChoice Ln83 Col 37 1 56MB ET NBR To get explanation for an error e Rest the mouse pointer over the wrong construction for a moment and read a ScreenTip for the error e Double click the highlighted pane on the status bar The caret will move to the first error of that type To quickly move to the next error choose Next Error from the View menu or type F4 to go to the previous error type Shift F4 12 Text Editor Node Folding Node folding lets you hide a body of huge or uninteresting nodes and prototype declarations The lines of code inside these nodes can be expanded or collapsed using a icon on the selection margin at the left side of Text editor El Shape appearance Appearance texture Imag
56. our scene enter a name for a new destination directory which the Publishing Wizard then creates for you or click the Browse button and choose a directory from the file browser If you have selected Publish files to the net option for the first time get ready to download and install the latest version of Microsoft Web Publishing Wizard It automates the process of copying files from a temporary destination directory to the Web or FTP server Click Next when you re done If you change your mind you can come back to this dialog by clicking a Back button At any point in the publishing process you can click Cancel to stop the process without publishing If you already published some scenes you can click Finish to complete the process now using recently used settings for the rest of the dialogs Choosing Additional Resource Directories The next step of the publishing process is to choose the additional resource directories Some scenes may contain invalid links to the resources that that are possibly kept somewhere To help the Wizard find these resources you can specify a list of directories Starting from these directories the Publishing Wizard will search missing resources To add a directory to the list 1 Click the Add button 2 Choose a directory from the file browser 3 Click OK Click Next when you re done or Back to return to the previous Wizard step 39 Publishing Wizard Excluding Files from Publishing Th
57. ouse button at that spot the node field is inserted there 21 Scene Tree Note When the pointer is over a closed grouping node or a MFNode field rest the mouse pointer over the item for a second and the item will open To copy a node in the scene hierarchy 1 Select the node you want to copy 2 While holding down the CTRL key drag the selected node to the new location To clone a node in the scene hierarchy 1 Select the node you want to clone 2 While holding down the ALT key drag the selected node to the new location below current selection Note If the dragged node is unnamed Scene Tree prompts you for the node name If you use your right mouse button to drag a menu appears with the available options Naming Nodes in the Scene Tree Using the Scene Tree you can rename a node PROTO declaration or field declaration with appropriate renaming of all its instances clones To edit the node name using the Scene Tree 1 Select the node you want to rename Press F2 or right click over the node and choose Rename Type a name in the text box and press Enter or press Esc if you want to leave the text box unchanged Note VRML node names are not allowed to contain spaces single or double quotation marks pound signs commas periods square brackets backslashes or curly braces Also they can t begin with a numerical digit or the plus or minus characters To clear the node name 1 Select the n
58. plicitly defines and composes a set of 3D and multimedia objects 3 can specify hyperlinks to other files and applications 4 can define object behaviors An important characteristic of VRML files is the ability to compose files together through inclusion and to relate files together through hyperlinking For example consider the file earth wrl which specifies a world that contains a sphere representing the earth This file may also contain references to a variety of other VRML files representing cities on the earth e g file paris wrl The enclosing file earth wrl defines the coordinate system that all the cities reside in Each city file defines the world coordinate system that the city resides in but that becomes a local coordinate system when contained by the earth file Hierarchical file inclusion enables the creation of arbitrarily large dynamic worlds Therefore VRML ensures that each file is completely described by the objects and files contained within it and that the effects of each file are strictly scoped by the file and the spatial limits of the objects defined in the file Otherwise the accumulation of files into larger worlds would produce unscalable results as each added world produces global effects on all other worlds For example light sources have the potential of global effect since light energy theoretically does not dissipate to zero And if the earth file contains 100 city files each containing 100 lights each affect
59. quick entering a VRML keyword node type node name field name default field value or another syntax element e Perform advanced find and replace operations in a file including using regular expressions e Use virtual spaces for advanced cursor positioning e Navigate through sections of code using the Go To dialog box e Use Bookmarks to mark frequently accessed lines in your source file e Customize the Text editor with save preferences tabs and indents e Modify the font style size and color e Select lines or multiple lines copy and cut selection into clipboard e Split the Text editor window into two panes e Hide a body of huge or uninteresting nodes and prototype declarations e Use drag and drop editing within editor window and between the Text editor and other applications Tip While using the Text editor in many instances you can click the right mouse button to display a shortcut menu of frequently used commands The commands available depend on what the mouse pointer is pointing to Syntax Coloring PROTO Message field cl s console HULL Syntax coloring uses different colors for field MFString text various code elements such as eventIn SFTime input keywords comments strings URLs lf nodes fields and field values This Script coloring gives you visual cues about the field MFString text IS text field SFNode console IS console eventIn SFTime input IS input url javascript function input val
60. ray or object variable has a minus sign box in the Name field the variable is already fully expanded To expand or collapse the variable click the or box as described in Spreadsheet Fields Watch Window Use the Watch window to specify variables and expressions that you want to watch and modify while debugging your code If you add an array or object variable to the Watch window plus sign or minus sign boxes appear in the Name column You can use these boxes to expand or collapse your view of the variable as described in Spreadsheet Fields Immediate Window The Immediate window displays information from commands typed directly into the window You can type or paste a line of code and press ENTER to run it Use the Immediate window to Test problematic or newly written code Query or change the value of a variable While execution is halted assign the variable a new value as you would in code Call procedures as you would in code Spreadsheet Fields The debugger interface uses spreadsheet fields which have an interface similar to that of Microsoft Excel These spreadsheet fields appear in the Watch window the Variables window and the QuickWatch dialog box The window where the spreadsheet field is located determines which cells are editable In the Variables window you can edit the cells in the Value column In the Watch window you can edit the cells in the Name and Value columns Spreadsheet fields c
61. s and images VRML browsers as well as authoring tools for the creation of VRML files are widely available for many different platforms VRML supports an extensibility model that allows new dynamic 3D objects to be defined and a registration process that allows application communities to develop interoperable extensions to the base standard There are mappings between VRML objects and commonly used 3D application programmer interface API features Scope The VRML specification defines a file format that integrates 3D graphics and multimedia Conceptually each VRML file is a 3D time based space that contains graphic and aural objects that can be dynamically modified through a variety of mechanisms VRML defines a primary set of objects and mechanisms that encourage composition encapsulation and extension The semantics of VRML describe an abstract functional behaviour of time based interactive 3D multimedia worlds VRML does not define physical devices or any other implementation dependent concepts e g screen resolution and input devices VRML is intended for a wide variety of devices and applications and provides wide latitude in interpretation and implementation of the functionality For example VRML does not assume the existence of a mouse or 2D display device Each VRML file 1 implicitly establishes a world coordinate space for all objects defined in the file as well as all objects recursively included by the file 2 ex
62. s option removes field values which are explicitly declared with a value identical to the default field value Simplify floating point numbers Check the box if you want the Publishing Wizard when possible to reduce float numbers to integers without lost of quality remove trailing zeros and remove unnecessary zero values to the left of decimal point For example number 10 0 reduce to 10 0 10 to 1 and so on Adjust numeric resolution This option also removes unnecessary text but in some cases such removal is lossy and in other cases there may be external code such as an EAI application relying on the text So you should be considered carefully before use the option This option adjusts numeric resolution of floating point numbers In many cases exporters output these numbers with a much greater resolution than necessary The sub options allow resolution to be indicated by type of the number For example coordinate resolution relates to all world coordinates and sizes the point field in the Coordinate node the size field in the Box node and so on Orientation resolution relates to all SFRotation and MFRotation fields and also to the fields that defines angles Click Next when you re done or Back to return to the previous Wizard step 40 Publishing Wizard Specifying Directory Organization In this step you decide whether you want to use a flat directory structure or whether you want to use a hierarchical structure
63. sks are routine or repetitive you can benefit from automating them Through Automation formerly OLE Automation you can reduce the time spent on these tasks and you can prevent errors that often result from performing the tasks manually Also you can add visual support for editing some VRML nodes in addition to text editing provided by VrmlPad With Automation you perform tasks by manipulating VrmlPad and its components as objects For example you open edit and close a document by manipulating it as an object Similarly you get or edit a VRML node s properties by manipulating it as an object Each VrmlPad object implements a dual interface through which you can manipulate the object You manipulate objects by using methods properties and events associated with the objects Methods represent actions you take against the objects Properties represent characteristics of the objects such as their type or size And events represent conditions under which actions are taken against the objects Suppose you want to create a VRML file containing WorldInfo node quickly by simply choosing a menu item Start by writing a VBScript macro that will create the file The macro looks like this Sub Create New Set doc Window Documents Open doc Selection Created by the Author vbCrLf Set node doc RootNodes Add WorldInfo node Fields info Add Powered by VrmlPad doc Saved True End Sub This macro does the following e T
64. ting for user input after completing a debugging command 2 Type paste or drag the variable name or expression into the window 3 Press ENTER The Immediate window evaluates the variable or expression immediately and displays the value or an error message 37 Script Debugger Modifying the Value of a Variable When the script is paused at a breakpoint or between steps you can change the value of any vrmlscript variable in your code To modify the value of a variable using QuickWatch On the Debug menu click QuickWatch In the Expression text box type the variable name Click the Recalculate button A D If the variable is an array or object use the box to expand the view until you see the value you want to modify 5 Double click the value or use the TAB key to move to the value you want to modify 6 Type the new value and then press ENTER 7 Click Close To modify the value of a variable using the Watch window 1 If the variable is an array or object use the box to expand the view until you see the value you want to modify 2 Double click the value or use the TAB key to move the insertion point to the value you want to modify 3 Type the new value and press ENTER To modify the value of a variable in the Variables window 1 Select the line containing the variable whose type you want to modify 2 If the variable is an array or object use the box to expand the view until you see th
65. tions and more 4 Document Tabs Open and edit multiple documents Find and replace in all opened documents Document list includes also file dependencies of the active document Overview 5 Scene Tree View edit and navigate hierarchical scene structure Synchronize selection in both directions Delete comment and rename nodes PROTOs and field declarations 6 Routing Map View and edit scene routes Synchronize selection in both directions Delete comment and add new routes using Start Route and Add Route commands Resource View View edit and navigate document dependencies Rename and browse all references to a resource Convert when possible absolute references to relative and vice versa 8 Preview Preview scenes in installed browsers and VRML viewers Publishing Wizard not shown on the figure Organize and optimize your scene with dependencies for publishing on the Net and put the files on your Web server or send it by e mail G3 Automation and Scripting not shown on the figure Manipulate the program from external applications using the C C Visual Basic8 Borland Delphi Create add ins VBScript and JavaScript macros and execute them from within the VrmlPad environment automating custom tasks n VrmiScript Debugger Locate bugs in your vrmlscript driven interactive VRML scenes using the integrated script debugger The debugger interface provides wrapper for the Cortona VRM
66. u right click the item to see the menu e Or press Ctrl F11 To jump to the reference of the selected item PROTO declaration node or field declaration e Choose Go To Reference from the pull down menu e Orpress F11 You can synchronize current selection in the Scene Tree with the caret position in the Text Editor in both directions To set the caret position in the Text editor at a node PROTO or field e Double click the item e Or select the item and press ENTER e Or choose Go To from the pull down menu To set the selection in the Scene Tree to the node PROTO or field near the caret position 1 Activate Text editor window 2 Choose Synchronize from the View menu or type Alt S To have the Scene Tree automatically synchronize selection as you type your code select Automatic synchronize context on the Tree tab in the Options dialog box Moving Copying and Cloning Nodes within the Scene Tree The top level nodes in a VRML file are in no particular order so you can reorder them to suit your tastes without changing what your world looks like You can also move a node other than a top level node or field declaration definition to reorganize the structure of your world To move a node field in the scene hierarchy 1 Select the node field you want to move 2 Click and drag the node field icon When the pointer is over a place where the item can legally be inserted two red arrows appear if you release the m
67. ute source or target node or scripts field declaration choose Go To Source or Go To Target 24 Routing Map To set the selection in the Routing Map to the route near the caret position 1 Activate Text editor window 2 Choose Synchronize from the View menu or type Alt S If the caret position is near a node field definition or event declaration the Synchronize command enumerates all routes connecting this node or field with some other fields To select next or previous route e Press Down or Up Left and Right buttons scrolls Routing Map to show both ends of a long selected route Typing Ctrl Page Down and Ctrl Page Up scrolls Routing Map one page down or up without changing the selection To remove a route 1 Select the route you want to remove 2 Press Del or right click over the route line and choose Delete Route To redirect a route 1 Select the route you want to change 2 Right click over the route line and choose Add Route or type Ctrl R 3 Select a new source or and target node or event name and click OK To add a new route 1 Activate Text editor or Scene Tree window 2 Select in Scene Tree or move the caret at the source node scripts eventOut or exposedField 3 Choose Start Route from the Edit menu or type Ctrl E to mark the node or the field as a source for the new route Select in Scene Tree or move the caret at the target node scripts eventln or exposedField Choose Add Route from the Ed
68. xtrusioneditor About VRML The Virtual Reality Modeling Language VRML is a file format for describing interactive 3D objects and worlds VRML is designed to be used on the Internet intranets and local client systems VRML is also intended to be a universal interchange format for integrated 3D graphics and multimedia VRML may be used in a variety of application areas such as engineering and scientific visualization multimedia presentations entertainment and educational titles web pages and shared virtual worlds Design Criteria VRML has been designed to fulfill the following requirements Authorability Enable the development of computer programs capable of creating editing and maintaining VRML files as well as automatic translation programs for converting other commonly used 3D file formats into VRML files Composability Provide the ability to use and combine dynamic 3D objects within a VRML world and thus allow re usability Extensibility Provide the ability to add new object types not explicitly defined in VRML Implementability Capable of implementation on a wide range of systems Performance Emphasize scalable interactive performance on a wide variety of computing platforms Overview Scalability Enable arbitrarily large dynamic 3D worlds Characteristics of VRML VRML is capable of representing static and animated dynamic 3D and multimedia objects with hyperlinks to other media such as text sounds movie
69. you cannot see how your changes affect the way the scene runs At run time you can watch how the scene behaves but you cannot directly change the code 31 Script Debugger Break mode halts the operation of a VRML client and gives you a snapshot of its condition at any moment Variable and property settings are preserved so you can analyze the current state of the VRML scene and enter changes that affect how the scene runs When the VRML viewer is in break mode you can e Determine which active procedures have been called e Watch the values of variables properties and statements e Change the values of variables and properties e View or control which statement the VRML client will run next e Run vrmlscript statements immediately Entering Break Mode at a Problem Statement When debugging you may want the VRML viewer to halt at the place in the code where you think the problem might have started This is one reason VrmlPad provides breakpoints A breakpoint defines a statement or set of conditions at which VrmlPad automatically stops execution and puts the VRML viewer in break mode without running the statement containing the breakpoint You can enter break mode manually if you do any of the following while the VRML viewer is running e Press CTRL BREAK e Choose Break from the Debug menu e Click the Break button on the toolbar above Debugger windows It s possible to break execution when the VRML viewer is idle when it

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