Limit

Definition

Name	Mesh>Limit
Type	Limit
Defined in	Edges

If the edge is longer or shorter than given values, the energy is infinity, otherwise it is zero [NPW04]:

\[\begin{split}E = \begin{cases} \infty & \text{if} \quad l < l_{min}\\ \infty & \text{if} \quad l > l_{max}\\ 0 & \text{otherwise} \end{cases}\end{split}\]

there \(l\) is the current edge length. This is useful to avoid edges that are too long and lead to nonphysical shapes.

Python calling

evolver.add_force("Mesh>Limit", {
    "lmin": {"1": str(min_constant_value)},
    "lmax": {"1": str(max_bond_value)}
})