kcnarf / d3-weighted-voronoi Goto Github PK

Two questions about the cell<->site correspondance

1. How can I easily get all points that have no matching cell? In the classic (non-weighted) voronoi, all cells are returned in the same order as the points, but here it seems different.

2. In https://observablehq.com/d/128a52368e482305 I can see that for all cells we have cell.site.index == 0. Is this expected?

#7

2 sites with the same x, y and weight raise a "Cannot read property 'x' of null".

stackTrace:
Uncaught TypeError: Cannot read property 'x' of null
at dot (VM2965 d3-weighted-voronoi.js:16)
at Face.orient (VM2965 d3-weighted-voronoi.js:399)
at ConvexHull.prep (VM2965 d3-weighted-voronoi.js:531)
at ConvexHull.compute (VM2965 d3-weighted-voronoi.js:635)
at computePowerDiagramIntegrated (VM2965 d3-weighted-voronoi.js:792)
at _weightedVoronoi (VM2965 d3-weighted-voronoi.js:876)
at computeAllCells (blob:http://blockbuilder.org/7558f499-9ca0-4287-9051-82ab1eb0ca1e:345)
at blob:http://blockbuilder.org/7558f499-9ca0-4287-9051-82ab1eb0ca1e:335

data:
[{x:halfWidth, y:halfHeight, weight: 0},
{x:halfWidth, y:halfHeight, weight: 0}]

next.conflicts.isEmpty() is false, so current is not increased
this.visible[jF].getHorizon() is null
this.horizon.length is 0
first and last are null
this.created.length is 0, so current is not increased

repeat...

Input to _weightedVoronoi :

[[0.3,-1.5,1.7542563288623765],[-0.3,-1.5,1.7542563288623765],[0.3,-0.8999999999999999,1.7542563288623765],[-0.3,-0.8999999999999999,1.7542563288623765],[-0.3,-0.3,1.7542563288623765],[-0.8999999999999999,-0.8999999999999999,1.7542563288623765],[0.8999999999999999,-1.5,1.7542563288623765],[-0.8999999999999999,-1.5,1.7542563288623765]]

I did a basic experiment with the library on CodePen but weights don't seem to affect the result in the slightest. Any idea why? Thanks!

https://codepen.io/stur86/pen/BdXGWO

see Kcnarf/d3-voronoi-map#5 (comment)