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// interaction engine

As humans, we are spatial, physical thinkers. From birth we grow to understand the objects around us by the rules that govern how they move, and how we move them. These rules are so fundamental that we design our digital realities to reflect human expectations about how things work in the real world. At Leap […]

Explorations in VR Design is a journey through the bleeding edge of VR design – from architecting a space, to designing groundbreaking interactions, to making users feel powerful. Virtual reality is a world of specters, filled with sights and sounds that offer no physical resistance when you reach towards them. This means that any interactive […]

Following up on last week’s release of the Leap Motion Interaction Engine, I’m excited to share Weightless: Remastered, a major update to my project that won second place in the first-ever 3D Jam. A lot has changed since then! In this post, we’ll take a deeper look at the incredible power and versatility of the […]

Update (6/8/17): Interaction Engine 1.0 is here! Read more on our release announcement: Game physics engines were never designed for human hands. In fact, when you bring your hands into VR, the results can be dramatic. Grabbing an object in your hand or squishing it against the floor, you send it flying as the physics […]

Many of the assets in this post have been updated since 2016! For the latest, see True hand presence in VR is incredibly powerful – and easier than ever. With the Leap Motion Unity Core Assets and Modules, you can start building right away with features like custom-designed hands, user interfaces, and event triggers. […]

In the physical world, our hands exert force onto other objects. By grasping objects, they exert force through fingers and palms (using precision, power, or scissors grips), and the objects push back. Gravity can also help us hold items in the palms of our hands.

But not in the digital world! In the frictionless space of the virtual, anything can happen. Gravity is optional. Magic is feasible.

Interacting with your computer is like reaching into another universe – one with an entirely different set of physical laws. Interface design is the art of creating digital rules that sync with our physical intuitions to bring both worlds closer together. We realize that most developers don’t want to spend days fine-tuning hand interactions, so we decided to design a framework that will accelerate development time and ensure more consistent interactions across apps.