iOS' ARKit Enables Reflection of Real Objects on Virtual Surfaces

Real banana, virtual reflection

I wasn't duly impressed by Apple's augmented reality announcements for ARKit last year, but this updated feature is noteworthy and full of potential -- virtual reflections of real objects via ARKit's SCNFloor feature:

By default, a floor extends infinitely in the x- and z-axis dimensions of its local coordinate space, and is located in the plane whose y-coordinate is zero. To position and orient a floor in a scene, attach it to the geometry property of an SCNNode object. Often, you use a floor to provide a background for a scene.

If a floor’s reflectivity property is greater than zero, SceneKit automatically renders reflections for all geometries above it. Optionally, you can add an opacity gradient so that reflections of scene contents closer to the floor appear more clearly than those of scene contents further from it. You control the floor’s reflectivity using the properties listed in Adding Reflections to a Floor.

This via AR expert Helen Papagiannis, Ph.D., who notes it's a major leap from previous ARKit capacities:

Adding shadows to a virtual object was a big step for immersion in #AugmentedReality ...now we have “scene reflection” from @Apple #ARKit2 #WWDC18 #iOS12 where #AR objects reflect the real-world scene around them like this virtual bowl reflecting a real banana on the table! 🤯 pic.twitter.com/Ouih720AMA

— Helen Papagiannis, Ph.D. (@ARstories) June 11, 2018

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