[www-vrml] [xVRML] exposedFields in Scripts and PROTOs, the real issue here

[Paul Aslin <fabricatorgeneral@yahoo.com>]

The real issue with PROTOs is not being able to use
exposedField in Scripts. This forces hacks like this :

#VRML V2.0 utf8
# more notes at bottom
PROTO A [
 exposedField SFBool event FALSE
]
{
 PROTO MyexposedFieldAccess [
  exposedField SFBool event FALSE
 ]
 {Group {}}
 DEF Fields MyexposedFieldAccess {
  event IS event
 }
 DEF Scr Script {
  field SFNode fields USE Fields
 eventIn SFBool event
 field SFBool storedValue FALSE
 directOutput TRUE
 url "javascript:
  function initialize () {
   storedValue=fields.event;
  }
  function event (val,ts) {
   // val = value from this event
   storedValue=val;
  }
 "
}
ROUTE Fields.event TO Scr.event
}

Notice the use of MyexposedFieldAccess proto and instance
to access the exposedField. This can then be accessed using
directAccess or ROUTEs


Another more serious problem is added a SFNode to the
contents of a PROTO. As at the moment this can only be done
using a Script node ie:
group.children[0]=node;




	
		
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