Using anthropomorphic data, 4000 tests were devised representing a wide breadth of typical drop situations across the population. Testing parameters include elbow height, angle and length of forearm, initial angle of phone, initial speed of phone, as well as the possibility for an initial collision with the user’s hand.
The results from these 4000 drop tests were then compiled onto a single impact map.
In order to create the final mesh, a set of random points are located on the surface of the phone biased by the impact map.
A purpose built (soon to be shared!) mesh optimization algorithm refines the mesh into more regular triangles while keeping the mesh more dense in impact zones.