Environmental patterning is the experience of certain textures or objects, such as carpets, clouds, and dense vegetation, shifting into increasingly complex geometric patterns that are clearly comprised of the original material they are manifesting from. These structures can be symmetrical in nature, but often include form constants, fractals, and disorganised geometric patterns. Although similar in appearance, environmental patterning is distinct from that of geometry due to the way in which the geometric forms it produces are consistently comprised of pre-existing sensory data from within the external environment. In contrast, more standard geometry is largely separate from it's environment and is at most merely overlaid onto its surfaces instead of being entirely comprised of its materials. Environmental patterning is often accompanied by other coinciding effects such as symmetrical texture repetition, geometry, and drifting. It is most commonly induced under the influence of moderate dosages of psychedelic compounds, such as LSD, psilocybin, and mescaline.