Script node

Script {
  SFString url ""
}

Implements scripting facility with some limitations (see FAQ).

Script node enable to define complex interactions. Modifying script field call/launch function of the same name in the script. You can access to each VRML node of the scene from the script, based on a DOM system.

define an internal field in Script node
define a function which has the same name than the field
define a ROUTE TO this field
the function is launched when field if modified

eventIn, exposedField : a function can be linked to the field
eventOut : output from a function (can be used by ROUTE)
field : local variable

Example :

eventIn SFTime keyPressed
eventOut SFVec2f newValue
exposedField SFColor currentColor 1 1 1
field SFFloat  coefficient 3.5

SFString url "" :
The content of the script.

A function is written in javascript. You can use global or local variables. You can use internal functions (not linked to a field). initialize() is a special function launched at Script creation.
DOM access possible by positioning keyword USE after field. The node is accessible by pointed syntax.

The script is compiled => everything should be known before execution.
Our implementation doesn't include the "object" part of javascript BUT you can use protos and DOM.

#VRML V2.0 utf8

DEF input InputSensor { url "A"  activate FALSE }

DEF script Script {
  eventIn SFTime keyPressed

  field SFTime aTimeValue 0
  field SFInt32 anIntValue 13
  field SFFloat aFloatValue 3.1415
  field SFBool aBooleanValue TRUE
  field MFInt32 anIntArray [1 2 3 4 5 6]
  field MFFloat aFloatArray [1.1 2.2 3.3 4.4 5.5 6.6]

  field SFNode input IS input

  url "javascript:

    function initialize () {
      Browser.print ('Hello world !');
      # Activate the InputSensor
      input.activate = true;
    }

    function keyPressed () {
      Browser.print ('User pressed on the key: A');
    }
  "
}

ROUTE input.eventTime TO script.keyPressed