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@turf/boolean-intersects
Advanced tools
@turf/boolean-intersects is a module from the Turf.js library that provides geospatial analysis tools. This specific module is used to determine if two geometries intersect. It supports various types of geometries including points, lines, and polygons.
Check if two polygons intersect
This feature checks if two polygons intersect. The code sample creates two polygons and uses the booleanIntersects function to determine if they intersect.
const turf = require('@turf/turf');
const polygon1 = turf.polygon([[
[-2, 2],
[2, 2],
[2, -2],
[-2, -2],
[-2, 2]
]]);
const polygon2 = turf.polygon([[
[1, 1],
[3, 1],
[3, -1],
[1, -1],
[1, 1]
]]);
const intersects = turf.booleanIntersects(polygon1, polygon2);
console.log(intersects); // true
Check if a line intersects a polygon
This feature checks if a line intersects a polygon. The code sample creates a line and a polygon and uses the booleanIntersects function to determine if they intersect.
const turf = require('@turf/turf');
const line = turf.lineString([
[-1, 0],
[1, 0]
]);
const polygon = turf.polygon([[
[-2, 2],
[2, 2],
[2, -2],
[-2, -2],
[-2, 2]
]]);
const intersects = turf.booleanIntersects(line, polygon);
console.log(intersects); // true
Check if a point intersects a polygon
This feature checks if a point intersects a polygon. The code sample creates a point and a polygon and uses the booleanIntersects function to determine if they intersect.
const turf = require('@turf/turf');
const point = turf.point([1, 1]);
const polygon = turf.polygon([[
[-2, 2],
[2, 2],
[2, -2],
[-2, -2],
[-2, 2]
]]);
const intersects = turf.booleanIntersects(point, polygon);
console.log(intersects); // true
JSTS is a JavaScript library of spatial predicates and functions for processing geometry. It is a port of the Java Topology Suite (JTS). JSTS provides a wide range of geometric operations, including intersection checks, and is more comprehensive in terms of geometric processing compared to @turf/boolean-intersects.
Martinez Polygon Clipping is a library for performing boolean operations on polygons, such as union, intersection, difference, and xor. It is highly efficient and specifically designed for polygon operations, making it a good alternative for polygon intersection checks.
Boolean-intersects returns (TRUE) if the intersection of the two geometries is NOT an empty set.
feature1
(Geometry | Feature<any>) GeoJSON Feature or Geometry
feature2
(Geometry | Feature<any>) GeoJSON Feature or Geometry
options
Object Optional parameters (optional, default {}
)
options.ignoreSelfIntersections
boolean ignores self-intersections on input features (optional, default false
)var point1 = turf.point([2, 2]);
var point2 = turf.point([1, 2]);
var line = turf.lineString([[1, 1], [1, 3], [1, 4]]);
turf.booleanIntersects(line, point1);
//=false
turf.booleanIntersects(line, point2);
//=true
//addToMap
var addToMap = [point1, point2, line];
point1.properties['marker-color'] = '#f00'
point2.properties['marker-color'] = '#0f0'
Returns boolean true if geometries intersect, false otherwise
This module is part of the Turfjs project, an open source module collection dedicated to geographic algorithms. It is maintained in the Turfjs/turf repository, where you can create PRs and issues.
Install this single module individually:
$ npm install @turf/boolean-intersects
Or install the all-encompassing @turf/turf module that includes all modules as functions:
$ npm install @turf/turf
FAQs
turf boolean-intersects module
We found that @turf/boolean-intersects demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 9 open source maintainers collaborating on the project.
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