#VRML V2.0 utf8
#
#  animgrd.wrl
#  Animated grid
#	by John L. Moreland
#
#  This world illustrates the use of a script to change the whichChoice
#  field of a Switch node.  When animated, this enables switching among
#  different pieces of geometry, such as different elevation grids,
#  like in this example.
#

WorldInfo {
    title "Animated grid"
    info [ "Copyright (c) 1998, John L. Moreland" ]
}

Viewpoint {
	position 0.0 12.0 12.0
	orientation 1.0 0.0 0.0 -0.83
	description "Entry view"
}

NavigationInfo {
	type "EXAMINE"
	headlight FALSE
}

DirectionalLight {
	direction 1.0 -1.0 -1.0
}
DirectionalLight {
	direction -1.0 1.0 1.0
}

DEF Grids Switch {
	whichChoice 0
	# animated whichChoice
	choice [
		Inline { url "ter00.wrl" bboxSize 14.0 5.0 14.0 }
		Inline { url "ter01.wrl" bboxSize 14.0 5.0 14.0 }
		Inline { url "ter02.wrl" bboxSize 14.0 5.0 14.0 }
		Inline { url "ter03.wrl" bboxSize 14.0 5.0 14.0 }
		Inline { url "ter04.wrl" bboxSize 14.0 5.0 14.0 }
		Inline { url "ter05.wrl" bboxSize 14.0 5.0 14.0 }
		Inline { url "ter06.wrl" bboxSize 14.0 5.0 14.0 }
		Inline { url "ter07.wrl" bboxSize 14.0 5.0 14.0 }
		Inline { url "ter08.wrl" bboxSize 14.0 5.0 14.0 }
		Inline { url "ter09.wrl" bboxSize 14.0 5.0 14.0 }
	]
}

DEF Clock TimeSensor {
	cycleInterval 2.0
	startTime 1.0
	stopTime 0.0
	loop TRUE
}

DEF Switcher Script {
	field    SFInt32 numberOfChoices 10
	eventIn  SFFloat set_fraction
	eventOut SFInt32 choice_changed
	url "vrmlscript:
		function set_fraction( frac, stamp ) {
			choice_changed = frac * numberOfChoices;
		}"
}

ROUTE Clock.fraction_changed  TO Switcher.set_fraction
ROUTE Switcher.choice_changed TO Grids.set_whichChoice