booleanContains function

bool booleanContains(GeoJSONObject feature1, GeoJSONObject feature2)

booleanContains returns true if the second geometry is completely contained by the first geometry. The interiors of both geometries must intersect and, the interior and boundary of the secondary must not intersect the exterior of the primary. booleanContains returns the exact opposite result of the booleanWithin. example:

final line = LineString(coordinates: [
  Position.of([1, 1]),
  Position.of([1, 2]),
  Position.of([1, 3]),
  Position.of([1, 4])
]);
final point = Point(coordinates: Position.of([1, 2]));
booleanContains(line, point);
//=true

Implementation

bool booleanContains(GeoJSONObject feature1, GeoJSONObject feature2) {
  final geom1 = getGeom(feature1);
  final geom2 = getGeom(feature2);

  final coords1 = (geom1 as GeometryType).coordinates;
  final coords2 = (geom2 as GeometryType).coordinates;
  if (geom1 is Point) {
    if (geom2 is Point) {
      return coords1 == coords2;
    } else {
      throw GeometryCombinationNotSupported(geom1, geom2);
    }
  } else if (geom1 is MultiPoint) {
    if (geom2 is Point) {
      return isPointInMultiPoint(geom2, geom1);
    } else if (geom2 is MultiPoint) {
      return isMultiPointInMultiPoint(geom2, geom1);
    } else {
      throw GeometryCombinationNotSupported(geom1, geom2);
    }
  } else if (geom1 is LineString) {
    if (geom2 is Point) {
      return booleanPointOnLine(geom2, geom1, ignoreEndVertices: true);
    } else if (geom2 is LineString) {
      return isLineOnLine(geom2, geom1);
    } else if (geom2 is MultiPoint) {
      return isMultiPointOnLine(geom2, geom1);
    } else {
      throw GeometryCombinationNotSupported(geom1, geom2);
    }
  } else if (geom1 is Polygon) {
    if (geom2 is Point) {
      return booleanPointInPolygon((geom2).coordinates, geom1,
          ignoreBoundary: true);
    } else if (geom2 is LineString) {
      return isLineInPolygon(geom2, geom1);
    } else if (geom2 is Polygon) {
      return _isPolyInPoly(geom1, geom2);
    } else if (geom2 is MultiPoint) {
      return isMultiPointInPolygon(geom2, geom1);
    } else {
      throw GeometryCombinationNotSupported(geom1, geom2);
    }
  } else {
    throw GeometryCombinationNotSupported(geom1, geom2);
  }
}