Simulation Nodes: How is Delta Time different from Scene Time?

Question

How is Delta Time different from Scene Time in Simulation Nodes?

Answer 1

Clarifying pointers:

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Delta Time in simulation, keeps things steady:

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Scene Time plugged into simulation, makes things exponential:

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The value in 'Simulation Output' can be used as 'Time' for some things:

Answer 2

Scene time - how much time in frames or seconds, has passed since the beginning of the animation.

Delta time - how much time has passed, in seconds, from the last evaluation (last frame).

Delta time is a typical value used in simulations and game loops independent of fps, for example I used it here, named dt:

Distributed interaction visualization

def brain(dt, memory, gps):

You could implement delta time yourself by reading the scene time, passing it to sim output and subtracting current scene time from the previous scene time.