Scripts in VRML n241.tplt Justification Not enough interpolators variable conversion complex interactions Not enough interpolators built into VRML float to string? translation to rotation? Y rotation to Z rotation? Circle interpolator? More complex interactions conecting switches H2oComp Light switch demo Elements of the script node eventIns eventOuts fields url eventIn Name convention: set_something Syntax: eventIn type name Example: eventIn SFBool set_status Receives values, triggers event function with same name as eventIn value passed as a parameter to function eventOut Name convention: something_changed Syntax: eventOut type name Example: eventOut SFBool status_changed most scripts will assign value to eventOut eventOut looks like a variable to script the function's output is eventOut(s) field Name convention: any name Syntax: field type name Example: field SFInt32 count Example: field SFNode output USE textbox URL points to script javaScript .js file java .class file "javascript: multiline quote Using inline JS scripts Multiline quote use ' or \" inside script easiest way for simple scripts Our preferred technique Organization of a script Function corresponding to each eventIn function will have two parameters,

value
timestamp

Example:


eventIn SFBool value_changed
url " javascript:
  function value_changed(val, time){
    //code goes here
  } // end function
"