##Refrenece https://developer.apple.com/library/ios/documentation/SceneKit/Reference/SceneKit_Framework/ https://developer.apple.com/library/ios/samplecode/SceneKitVehicle/Introduction/Intro.html http://threejs.org/examples/#webgl_effects_parallaxbarrier
##3D Model source https://3dwarehouse.sketchup.com/
##3D Model tool sketchup
##Xcode version version 7.3
##Switch 3d model There are 3 models: GLA , AMG and GLA concept model,click button to switch model.
##Mutliple color support Click blue button to update the model color to blue, it's easy to support more colors. Click origin button to reset the model color.
##Rotate Click rotate button to rotate model
##camera control Gesture to control camera
Change to you own Apple account to sign codes if you want to run it on your iPhone