short-and-sweet | Accessible character counter for input elements | User Interface library

Standard containers can generally be constructed using ranges from other containers, specified by pairs of iterators. Consider the following example :

So specifically what they do is documented on the tick documentation. It says this:

Increments the current alpha by (alphaTarget - alpha) × alphaDecay; then invokes each registered force, passing the new alpha; then decrements each node’s velocity by velocity × velocityDecay; lastly increments each node’s position by velocity.

I would describe them in this way:

alpha I think of as the temperature of the system, which decays over a period of time which I'll use to explain. When the temperature hits 0 (alphaTarget) it automatically stops everything from moving, because it assumes there's no energy left. So the simulation stops.

The duration that the system has energy depends on 3 things, the current alpha, the alphaTarget which is when we should stop and alphaDecay which is the speed at which we lose heat from the system. The larger this is, the quicker the force will come to a stop.

Velocity is the speed of the individual items within the force. So after each tick we get an update and the velocity is decreased by the velocityDecay ratio. So I treat velocityDecay as Friction. The higher the friction, the quicker that individual node will come to a stop.

Typically you call simulation.restart() off the back of some user action (a node being removed, a link being added etc).

You can do it by passing two lambda expressions to withConverter, so something like this: