vr-jugglua/vrjugglua/lua/nav-app-skeleton.lua at d0341dc1a9c5b3059458020f823ff2daa67e97f6 · vancegroup/vr-jugglua · GitHub

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print("nav-app-skeleton starting up...")

require("Navigator")
require("Scene")

RelativeTo = {
	Room = osg.Group(),
	World = osg.Group()
}

osgnav = {position = osg.Vec3d(0, 0, 0)}

local setUpActions = false

function osgnav:initScene()
	if runbuf then
		runbuf:init()
	end
	--print("Setting up position interface")
	local wand = gadget.PositionInterface("VJWand")

	--print("Setting up digital interface")
	local button = gadget.DigitalInterface("VJButton0")

	--print("Creating navigator")
	self.nav = Navigator.create(maxspeed)
	Navigator.useWandTranslation(self.nav, wand, button)

	--print("Setting up scenegraph")
	navtransform = osg.PositionAttitudeTransform()
	navtransform:addChild(RelativeTo.World)


	--print("Attaching to app proxy's scene")
	self.appProxy:getScene():addChild(navtransform)
	self.appProxy:getScene():addChild(RelativeTo.Room)

	print("Scenegraph Navigation Testbed loaded!")
	print("")
	print("RelativeTo.World is your root-level group node for the world you can navigate.")
	print("RelativeTo.Room is the root group node for objects positioned relative to your physical space.")
	print("")
	print("Do groupnode:addChild(somenode) to attach 'somenode' to the scene graph")
	print("")
	if inSimulator then
		print("Simulator Mode Instructions --")
		print("In the simulator window:")
		print("   Hold 'shift' and move the mouse to rotate the simulated wand")
		print("   Hold 'ctrl' and move the mouse to move (translate) the wand in X and Y")
		print("   Hold 'alt' and move the mouse to move (translate) the wand in X")
		print("   Mouse buttons are mapped left, middle, right to VJButton0, 1, 2 respectively.")
		print("   To use a different configuration, pass the name of the jconf file at the command line.")
		print("")
	end

end

function osgnav:preFrame()
	self.position = self.position - self.nav:getTranslation(self.appProxy:getTimeDelta(), self.position)
	navtransform:setPosition(self.position)
end

function osgnav:latePreFrame()
	if runbuf then
		runbuf:runBuffer()
	end
	if Actions then
		if not setUpActions then
			Actions.setAppProxy(osgnav.appProxy)
			setUpActions = true
		end
		Actions.updateFrameActions()
	end
end

function osgnav:setupDefaultLighting()
	local WorldStateSet = RelativeTo.World:getOrCreateStateSet()
	--Light 0
	local light0 = osg.Light()
	light0:setAmbient(osg.Vec4(0.8, 0.8, 0.8, 0.8))
	local lightsource0 = osg.LightSource()
	lightsource0:setLight(light0)
	lightsource0:setLocalStateSetModes(osg.StateAttribute.Values.ON)
	WorldStateSet:setAssociatedModes(light0, osg.StateAttribute.Values.ON)
	RelativeTo.Room:addChild(lightsource0)
	light0:setPosition(osg.Vec4(0, 10, 0, 1.0))

	--Light 1
	local light1 = osg.Light()
	light1:setLightNum(1)
	light1:setAmbient(osg.Vec4(.8, .8, 0.6, .50))
	local lightsource1 = osg.LightSource()
	lightsource1:setLight(light1)
	lightsource1:setLocalStateSetModes(osg.StateAttribute.Values.ON)
	WorldStateSet:setAssociatedModes(light1, osg.StateAttribute.Values.ON)
	RelativeTo.Room:addChild(lightsource1)
	light1:setPosition(osg.Vec4(1.5, 2, 0, 1.0))

	function osgnav:clearDefaultLighting()
		RelativeTo.Room:removeChild(lightsource0)
		RelativeTo.Room:removeChild(lightsource1)
		WorldStateSet:setAssociatedModes(light1, osg.StateAttribute.Values.OFF)
	end
end


print("Setting up scenegraph")
navtransform = osg.PositionAttitudeTransform()

print("App delegate defined, now creating OsgAppProxy")
osgnav.appProxy = vrjApp.OsgAppProxy()

print ("Now setting OsgAppProxy's delegate")
osgnav.appProxy:setAppDelegate(osgnav)

print("Setting kernel application")
osgnav.appProxy:setActiveApplication()

print("Setting up default lighting (lights 0 and 1). Call osgnav:clearDefaultLighting() to remove light sources from graph and disable light #1.")
osgnav:setupDefaultLighting()