#VRML V2.0 utf8

##:@* crystal proto

##-	External proto for the bubble creation
##-	example.  The name is inherited from
##-	a previous effort.

##- <p>
##-	This code may be reused in part or total.
##-	Please include this paragraph when it is used.
##-	Copyright 2000, Leonard Daly <daly@realism.com>


##@ proto description

#	Prototype for a bubble.  The bubble is
#	animated.  Duration and looping of the
#	animation can be controlled.  The color
#	of the bubble is also controllable.

#
#	Fields		Type		Value	Description
#	------		----		-----	-----------
#	startTime	SFTime		0	The animation start
#						time.  The default
#						immediately starts
#						the animation.
#
#	cycleInterval	SFTime		20	The length of time
#						to complete a single
#						animation cycle.
#
#	loop		SFBool		FALSE	Turns on/off looping
#						of the animation.
#
#	color		SFColor		1 1 1	The color of the bubble.
#

##@ proto

PROTO SphereCrystal [
  exposedField SFTime startTime 0
  exposedField SFTime cycleInterval 20
  exposedField SFBool loop FALSE
  exposedField SFColor color 1 1 1
]
{

##@ the bubble
##	Define the bubble.  The color is
##	specified in the node definition,
##	specularColor is a blue-gray.

DEF Cyrstal Transform {
  children [
    Shape {
      appearance Appearance {
        material Material {
          diffuseColor IS color
          ## specularColor .4 .4 .45
          specularColor .8 .2 .25
          shininess .3
          transparency .6
        }
      }
      geometry Sphere {
        radius .2
      }
    }
  ]
}

##@ bubble expansion

##	Bubble expansion control.  The time
##	is set in the node declaration.

DEF Timer TimeSensor {
  cycleInterval	IS cycleInterval
  loop		IS loop
  enabled	TRUE
  startTime	IS startTime
  stopTime	0.
}
DEF Grow PositionInterpolator {
  key [0 1]
  keyValue [1 1 1, 20 20 20]
}

##@ event routing
##	Connect the modules

ROUTE	Timer.fraction_changed	TO	Grow.set_fraction
ROUTE	Grow.value_changed	TO	Cyrstal.scale
}

##	End of PROTO


##@	test nodes

Transform {
  children [
    Transform {
      translation 1 1 1
      children [
        SphereCrystal {}
      ]
    }
    Transform {
      translation -1 -1 -1
      children [
        SphereCrystal {
          loop TRUE
        }
      ]
    }
  ]
}

##</>