Simulating and modeling lichen growth

For hattifattener:

Simulating and modeling lichen growth

Abstract

This paper presents a system for modeling lichens and simulating their propagation and growth in a virtual scene. Lichens colonize almost every substrate in nature and play an important role in the visual appearance of a natural object. The propagation of lichens over the substrate is performed by an Open Diffusion Limited Aggregation model constrained by the characteristics of the environment. The designer can control the development of lichens with simple parameters. Rendering the complex geometry and texture of lichens is achieved by instantiating three dimensional lichen models stored in an atlas of shapes created after real world images. The lichens obtained by our approach considerably increase the realism of complex natural scenes.

apparatus for remote picking of apples

Anyone around here have a good solid grippy pair of lazy tongs, or something? The big apple tree behind my apartment building has one apple nearly ripe, hanging forty feet in the air and eight feet straight out from the edge of the roof.

I want to save the groundlings from it.

A tongs with fangs might grip well, though it would obviously break the skin. I am not opposed to dividing and eating (or spitting out) this apple on the spot.