HilbertCam — ASO

By Richard Barber on AppTrack Ninja.

Light-adaptive Hilbert curves.

HilbertCam turns live camera frames into a continuously changing drawing based on the Hilbert space-filling curve. A Hilbert curve is a recursive mapping between a one-dimensional index and a two-dimensional grid. At order n, the grid has side length 2^n, contains 4^n sample locations, and joins every location with one continuous path while preserving strong spatial locality. HilbertCam uses order 9: a 512 x 512 lattice containing 262,144 ordered points and 262,143 connected segments. The base geometry is generated once on the CPU. For each integer distance d, an iterative Hilbert d-to-(x,y) …

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