vasturiano / d3-force-registry Goto Github PK
View Code? Open in Web Editor NEWA curated compilation of plugins and all-things related to d3-force
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Thanks so much for curating and assembling this. As I mentioned on Twitter, I think beeswarm not M.Bostock and force in a box belong here. If so, I will happily submit pull.
videos and presentations
Would you also consider this as a good spot to collect other resources, such as videos and presentations? If so, will gladly help collect links.
Add d3.forceManyBodyReuse
Great resource! Is it possible to add d3-force-reuse to your registry? Here is an example row you could add to the table:
| Plugin | Description | Code | Examples |
|---|---|---|---|
| d3.forceManyBodyReuse | Faster inverse-linear (distance) attraction/repulsion force applied to all nodes. Typically used as node repulsion in force-directed graphs for a distributed spread. Runs faster than d3.forceManyBody by reusing approximations. | d3-force-reuse |
Iterative-Relaxation in d3.forceLink
Wasn't too sure where to post this, but this repo seems to curate d3-force plugins for use in (perhaps) unusual use-cases, like physical simulations - so figured I'd alert users to energy-conservation in d3-force.
In particular, the Pendulum example asks:
Ok, I'm confused. Why isn't energy conserved and does the pendulum eventually stop?
Similarly, the Newton's Cradle example also 'thermalizes' albeit both explicitly setting:
d3.forceSimulation()
.alphaDecay(0)
.velocityDecay(0)The issue is that d3.forceLink actually performs iterative relaxation. The offending lines in the source code are:
x = target.x + target.vx - source.x - source.vx || jiggle(random);
y = target.y + target.vy - source.y - source.vy || jiggle(random);Note the link distance is specified by 'peeking ahead' to the anticipated position of the node ⟨x + vx,y + vy⟩.
This notebook further explains the issue using examples, and suggests two alternatives.
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