Drivers expressions

 

limited value

whaterver le var value is, it stop at 0 if less and 1 if more:

min(max(var, 0),1) 

 

frame

current frame value with sinusoidale loop

sin(frame*0.1)

 

tesselate

 cool way to obtain tesselation:

subdivide the mesh for a good vertesx density.

add vgroup by selecting all the vertex or vertex painting

use decimate modifier with vgroup

https://blender.stackexchange.com/questions/29106/tesselate-a-plane