pub struct Ring {
    pts: Vec<Pt2D>,
}
Expand description

Maybe a misnomer, but like a PolyLine, but closed.

Fields

pts: Vec<Pt2D>

Implementations

First dedupes adjacent points

Draws the ring with some thickness, with half of it straddling the interor of the ring, and half on the outside.

Be careful with the order of results. Hits on an earlier line segment of other show up first, but if the ring hits a line segment at multiple points, who knows. Dedupes.

Assuming both points are somewhere along the ring, return the points in between the two, by tracing along the ring in the longer or shorter direction (depending on longer). If both points are the same, returns None. The result is oriented from pt1 to pt2.

Assuming both points are somewhere along the ring, return the points in between the two, by tracing along the ring in the shorter direction. If both points are the same, returns None. The result is oriented from pt1 to pt2.

Extract all PolyLines and Rings. Doesn’t handle crazy double loops and stuff.

Produces a GeoJSON polygon, optionally mapping the world-space points back to GPS.

Translates the ring by a fixed offset.

Find the “pole of inaccessibility” – the most distant internal point from the polygon outline

Look for “bad” rings that double back on themselves. These’re likely to cause many downstream problems. “Bad” means the order of points doesn’t match the order when sorting by angle from the center.

TODO I spot many false positives. Look for better definitions – maybe self-intersecting polygons?

Print the coordinates of this ring as a geo::LineString for easy bug reports

Trait Implementations

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Auto Trait Implementations

Blanket Implementations

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