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@turf/boolean-contains: Add MultiPolygon support for non-polygon types
1 parent 1fed227 commit abb5048

23 files changed

Lines changed: 1100 additions & 1 deletion

‎packages/turf-boolean-contains/index.ts‎

Lines changed: 127 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -3,6 +3,7 @@ import {
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Feature,
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Geometry,
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LineString,
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MultiLineString,
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MultiPoint,
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MultiPolygon,
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Point,
@@ -87,8 +88,18 @@ function booleanContains(
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}
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case "MultiPolygon":
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switch (type2) {
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case "Point":
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return isPointInMultiPolygon(geom1, geom2);
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case "MultiPoint":
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return isMultiPointInMultiPolygon(geom1, geom2);
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case "LineString":
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return isLineInMultiPolygon(geom1, geom2);
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case "MultiLineString":
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return isMultiLineStringInMultiPolygon(geom1, geom2);
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case "Polygon":
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return isPolygonInMultiPolygon(geom1, geom2);
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case "MultiPolygon":
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return isMultiPolygonInMultiPolygon(geom1, geom2);
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default:
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throw new Error("feature2 " + type2 + " geometry not supported");
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}
@@ -103,6 +114,122 @@ function isPolygonInMultiPolygon(multiPolygon: MultiPolygon, polygon: Polygon) {
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);
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}
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/**
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* Is Point inside MultiPolygon
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*
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* @private
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* @param {MultiPolygon} multiPolygon MultiPolygon geometry
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* @param {Point} point Point geometry
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* @returns {boolean} true if point is inside the interior of any polygon in the MultiPolygon
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*/
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function isPointInMultiPolygon(multiPolygon: MultiPolygon, point: Point) {
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return multiPolygon.coordinates.some((coords) =>
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booleanPointInPolygon(
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point,
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{ type: "Polygon", coordinates: coords },
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{
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ignoreBoundary: true,
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}
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)
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);
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}
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/**
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* Is MultiPoint inside MultiPolygon
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*
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* @private
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* @param {MultiPolygon} multiPolygon MultiPolygon geometry
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* @param {MultiPoint} multiPoint MultiPoint geometry
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* @returns {boolean} true if every point is inside the interior of some polygon in the MultiPolygon
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*/
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function isMultiPointInMultiPolygon(
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multiPolygon: MultiPolygon,
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multiPoint: MultiPoint
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) {
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for (const coord of multiPoint.coordinates) {
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const pointInside = multiPolygon.coordinates.some((polyCoords) =>
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booleanPointInPolygon(
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coord,
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{ type: "Polygon", coordinates: polyCoords },
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{ ignoreBoundary: true }
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)
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);
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if (!pointInside) {
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return false;
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}
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}
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return true;
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}
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/**
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* Is LineString inside MultiPolygon
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*
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* @private
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* @param {MultiPolygon} multiPolygon MultiPolygon geometry
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* @param {LineString} lineString LineString geometry
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* @returns {boolean} true if the LineString is fully contained within a single polygon of the MultiPolygon
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*/
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function isLineInMultiPolygon(
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multiPolygon: MultiPolygon,
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lineString: LineString
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) {
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return multiPolygon.coordinates.some((coords) =>
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isLineInPoly({ type: "Polygon", coordinates: coords }, lineString)
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);
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}
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/**
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* Is MultiLineString inside MultiPolygon
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*
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* @private
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* @param {MultiPolygon} multiPolygon MultiPolygon geometry
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* @param {MultiLineString} multiLineString MultiLineString geometry
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* @returns {boolean} true if every LineString is fully contained within some single polygon of the MultiPolygon
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*/
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function isMultiLineStringInMultiPolygon(
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multiPolygon: MultiPolygon,
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multiLineString: MultiLineString
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) {
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for (const lineCoords of multiLineString.coordinates) {
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const lineInside = multiPolygon.coordinates.some((polyCoords) =>
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isLineInPoly(
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{ type: "Polygon", coordinates: polyCoords },
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{ type: "LineString", coordinates: lineCoords }
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)
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);
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if (!lineInside) {
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return false;
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}
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}
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return true;
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}
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/**
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* Is MultiPolygon inside MultiPolygon
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*
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* @private
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* @param {MultiPolygon} multiPolygon1 MultiPolygon geometry (container)
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* @param {MultiPolygon} multiPolygon2 MultiPolygon geometry (contained)
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* @returns {boolean} true if every polygon of multiPolygon2 is fully contained within some single polygon of multiPolygon1
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*/
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function isMultiPolygonInMultiPolygon(
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multiPolygon1: MultiPolygon,
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multiPolygon2: MultiPolygon
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) {
219+
for (const poly2Coords of multiPolygon2.coordinates) {
220+
const polyInside = multiPolygon1.coordinates.some((poly1Coords) =>
221+
isPolyInPoly(
222+
{ type: "Polygon", coordinates: poly1Coords },
223+
{ type: "Polygon", coordinates: poly2Coords }
224+
)
225+
);
226+
if (!polyInside) {
227+
return false;
228+
}
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}
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return true;
231+
}
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106233
function isMultiPolyInPoly(polygon: Polygon, multiPolygon: MultiPolygon) {
107234
return multiPolygon.coordinates.every((coords) =>
108235
isPolyInPoly(polygon, { type: "Polygon", coordinates: coords })

‎packages/turf-boolean-contains/package.json‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -6,7 +6,8 @@
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"contributors": [
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"Rowan Winsemius <@rowanwins>",
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"Denis Carriere <@DenisCarriere>",
9-
"Samuel Arbibe <@samuelarbibe>"
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"Samuel Arbibe <@samuelarbibe>",
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"Espen Hovlandsdal <@rexxars>"
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],
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"license": "MIT",
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"bugs": {

‎packages/turf-boolean-contains/test/false/MultiPolygon/LineString/LineStringOnBoundary.geojson‎

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,43 @@
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{
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"type": "FeatureCollection",
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"features": [
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{
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"type": "Feature",
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"properties": {},
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"geometry": {
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"type": "MultiPolygon",
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"coordinates": [
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[
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[
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[0, 0],
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[10, 0],
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[10, 10],
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[0, 10],
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[0, 0]
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]
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],
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[
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[
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[20, 0],
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[30, 0],
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[30, 10],
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[20, 10],
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[20, 0]
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]
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]
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]
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}
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},
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{
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"type": "Feature",
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"properties": {},
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"geometry": {
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"type": "LineString",
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"coordinates": [
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[0, 2],
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[0, 8]
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]
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}
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}
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]
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}

‎packages/turf-boolean-contains/test/false/MultiPolygon/LineString/LineStringOutside.geojson‎

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@@ -0,0 +1,43 @@
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{
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"type": "FeatureCollection",
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"features": [
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{
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"type": "Feature",
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"properties": {},
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"geometry": {
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"type": "MultiPolygon",
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"coordinates": [
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[
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[
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[0, 0],
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[10, 0],
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[10, 10],
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[0, 10],
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[0, 0]
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]
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],
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[
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[
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[20, 0],
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[30, 0],
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[30, 10],
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[20, 10],
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[20, 0]
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]
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]
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]
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}
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},
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{
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"type": "Feature",
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"properties": {},
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"geometry": {
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"type": "LineString",
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"coordinates": [
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[12, 5],
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[18, 5]
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]
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}
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}
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]
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}

‎packages/turf-boolean-contains/test/false/MultiPolygon/LineString/LineStringSpanningBothPolygons.geojson‎

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@@ -0,0 +1,43 @@
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{
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"type": "FeatureCollection",
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"features": [
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{
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"type": "Feature",
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"properties": {},
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"geometry": {
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"type": "MultiPolygon",
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"coordinates": [
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[
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[
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[0, 0],
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[10, 0],
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[10, 10],
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[0, 10],
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[0, 0]
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]
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],
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[
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[
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[20, 0],
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[30, 0],
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[30, 10],
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[20, 10],
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[20, 0]
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]
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]
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]
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}
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},
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{
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"type": "Feature",
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"properties": {},
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"geometry": {
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"type": "LineString",
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"coordinates": [
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[5, 5],
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[25, 5]
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]
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}
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}
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]
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}

‎packages/turf-boolean-contains/test/false/MultiPolygon/MultiLineString/MultiLineStringOneOutside.geojson‎

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@@ -0,0 +1,49 @@
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{
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"type": "FeatureCollection",
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"features": [
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{
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"type": "Feature",
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"properties": {},
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"geometry": {
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"type": "MultiPolygon",
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"coordinates": [
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[
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[
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[0, 0],
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[10, 0],
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[10, 10],
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[0, 10],
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[0, 0]
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]
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],
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[
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[
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[20, 0],
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[30, 0],
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[30, 10],
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[20, 10],
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[20, 0]
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]
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]
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]
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}
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},
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{
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"type": "Feature",
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"properties": {},
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"geometry": {
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"type": "MultiLineString",
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"coordinates": [
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[
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[2, 2],
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[8, 8]
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],
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[
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[12, 2],
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[18, 8]
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]
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]
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}
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}
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]
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}

‎packages/turf-boolean-contains/test/false/MultiPolygon/MultiLineString/MultiLineStringOneSpanningBoth.geojson‎

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,49 @@
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{
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"type": "FeatureCollection",
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"features": [
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{
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"type": "Feature",
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"properties": {},
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"geometry": {
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"type": "MultiPolygon",
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"coordinates": [
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[
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[
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[0, 0],
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[10, 0],
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[10, 10],
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[0, 10],
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[0, 0]
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]
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],
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[
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[
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[20, 0],
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[30, 0],
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[30, 10],
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[20, 10],
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[20, 0]
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]
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]
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]
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}
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},
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{
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"type": "Feature",
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"properties": {},
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"geometry": {
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"type": "MultiLineString",
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"coordinates": [
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[
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[2, 2],
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[8, 8]
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],
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[
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[5, 5],
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[25, 5]
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]
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]
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}
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}
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]
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}

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