@turf/line-slice-along to TypeScript #2978
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,51 +1,54 @@ | ||
| import path from "path"; | ||
| import { fileURLToPath } from "url"; | ||
| import Benchmark from "benchmark"; | ||
| import { lineSliceAlong } from "./index.js"; | ||
| import { loadJsonFileSync } from "load-json-file"; | ||
| import { Feature, LineString } from "geojson"; | ||
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| const __dirname = path.dirname(fileURLToPath(import.meta.url)); | ||
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| var line1: Feature<LineString> = loadJsonFileSync( | ||
| path.join(__dirname, "test", "fixtures", "line1.geojson") | ||
| ); | ||
| var route1: Feature<LineString> = loadJsonFileSync( | ||
| path.join(__dirname, "test", "fixtures", "route1.geojson") | ||
| ); | ||
| var route2: Feature<LineString> = loadJsonFileSync( | ||
| path.join(__dirname, "test", "fixtures", "route2.geojson") | ||
| ); | ||
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| const options = { units: "miles" } as const; | ||
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| var suite = new Benchmark.Suite("turf-line-slice-along"); | ||
| suite | ||
| .add("turf-line-slice-along#line1 5-15 miles", function () { | ||
| lineSliceAlong(line1, 5, 15, options); | ||
| }) | ||
| .add("turf-line-slice-along#line1 50-250 miles", function () { | ||
| lineSliceAlong(line1, 50, 250, options); | ||
| }) | ||
| .add("turf-line-slice-along#line1 250-500 miles", function () { | ||
| lineSliceAlong(line1, 250, 500, options); | ||
| }) | ||
| .add("turf-line-slice-along#route1 5-15 miles", function () { | ||
| lineSliceAlong(route1, 5, 15, options); | ||
| }) | ||
| .add("turf-line-slice-along#route1 50-250 miles", function () { | ||
| lineSliceAlong(route1, 50, 250, options); | ||
| }) | ||
| .add("turf-line-slice-along#route1 250-500 miles", function () { | ||
| lineSliceAlong(route1, 250, 500, options); | ||
| }) | ||
| .add("turf-line-slice-along#route2 5-15 miles", function () { | ||
| lineSliceAlong(route2, 5, 15, options); | ||
| }) | ||
| .add("turf-line-slice-along#route2 15-25 miles", function () { | ||
| lineSliceAlong(route2, 15, 25, options); | ||
| }) | ||
| .add("turf-line-slice-along#route2 25-35 miles", function () { | ||
| lineSliceAlong(route2, 25, 35, options); | ||
| }) | ||
| .on("cycle", function (event: any) { | ||
| console.log(String(event.target)); | ||
| }) | ||
| .run(); | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,7 +1,8 @@ | ||
| import { bearing } from "@turf/bearing"; | ||
| import { distance } from "@turf/distance"; | ||
| import { destination } from "@turf/destination"; | ||
| import { lineString, isObject, Units } from "@turf/helpers"; | ||
| import { Feature, LineString, Point, Position } from "geojson"; | ||
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| /** | ||
| * Takes a {@link LineString|line}, a specified distance along the line to a start {@link Point}, | ||
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@@ -26,25 +27,29 @@ import { lineString, isObject } from "@turf/helpers"; | |
| * //addToMap | ||
| * var addToMap = [line, start, stop, sliced] | ||
| */ | ||
| function lineSliceAlong( | ||
| line: Feature<LineString> | LineString, | ||
| startDist: number, | ||
| stopDist: number, | ||
| options: { units?: Units } = {} | ||
| ): Feature<LineString> { | ||
| // Optional parameters | ||
| if (!isObject(options)) throw new Error("options is invalid"); | ||
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Contributor
There was a problem hiding this comment. Reckon we should set default units explicitly even if it effectively happens a lower level. Maybe we destructure similar to #2974?
That'd also make sure we're not passing any rando options further down to distance or destination.
Collaborator
Author
There was a problem hiding this comment. Good point about accidentally sending extra options down. |
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| var coords: Position[]; | ||
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Contributor
There was a problem hiding this comment. Another couple of vars we could jettison.
Collaborator
Author
There was a problem hiding this comment. Lets just apply eslint's no-var and prefer-const (in another PR) |
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| var slice: Position[] = []; | ||
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| // Validation | ||
| if (line.type === "Feature") coords = line.geometry.coordinates; | ||
| else if (line.type === "LineString") coords = line.coordinates; | ||
| else throw new Error("input must be a LineString Feature or Geometry"); | ||
| const origCoordsLength = coords.length; | ||
| let travelled = 0; | ||
| let overshot: number, direction: number, interpolated: Feature<Point>; | ||
| for (let i = 0; i < coords.length; i++) { | ||
| if (startDist >= travelled && i === coords.length - 1) break; | ||
| else if (travelled > startDist && slice.length === 0) { | ||
| let overshot = startDist - travelled; | ||
| if (!overshot) { | ||
| slice.push(coords[i]); | ||
| return lineString(slice); | ||
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I think this had been broken when we changed the options to an object
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Huh. So why wasn't the isObject call catching this? Or was bench just not being run by anyone?
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Yeah I think it was just broken. There's no actual testing making sure bench works. I don't think we really want to just burn CI time benchmarking though.