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tile38/vendor/github.com/tidwall/geojson/point_test.go

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Faster point in polygon / GeoJSON updates The big change is that the GeoJSON package has been completely rewritten to fix a few of geometry calculation bugs, increase performance, and to better follow the GeoJSON spec RFC 7946. GeoJSON updates - A LineString now requires at least two points. - All json members, even foreign, now persist with the object. - The bbox member persists too but is no longer used for geometry calculations. This is change in behavior. Previously Tile38 would treat the bbox as the object's physical rectangle. - Corrections to geometry intersects and within calculations. Faster spatial queries - The performance of Point-in-polygon and object intersect operations are greatly improved for complex polygons and line strings. It went from O(n) to roughly O(log n). - The same for all collection types with many children, including FeatureCollection, GeometryCollection, MultiPoint, MultiLineString, and MultiPolygon. Codebase changes - The pkg directory has been renamed to internal - The GeoJSON internal package has been moved to a seperate repo at https://github.com/tidwall/geojson. It's now vendored. Please look out for higher memory usage for datasets using complex shapes. A complex shape is one that has 64 or more points. For these shapes it's expected that there will be increase of least 54 bytes per point.
2018-10-11 00:25:40 +03:00
package geojson
import "testing"
func TestPointParse(t *testing.T) {
p := expectJSON(t, `{"type":"Point","coordinates":[1,2,3]}`, nil)
expect(t, p.Center() == P(1, 2))
expectJSON(t, `{"type":"Point","coordinates":[1,null]}`, errCoordinatesInvalid)
expectJSON(t, `{"type":"Point","coordinates":[1,2],"bbox":null}`, nil)
expectJSON(t, `{"type":"Point"}`, errCoordinatesMissing)
expectJSON(t, `{"type":"Point","coordinates":null}`, errCoordinatesInvalid)
expectJSON(t, `{"type":"Point","coordinates":[1,2,3,4,5]}`, `{"type":"Point","coordinates":[1,2,3,4]}`)
expectJSON(t, `{"type":"Point","coordinates":[1]}`, errCoordinatesInvalid)
expectJSON(t, `{"type":"Point","coordinates":[1,2,3],"bbox":[1,2,3,4]}`, `{"type":"Point","coordinates":[1,2,3],"bbox":[1,2,3,4]}`)
}
func TestPointVarious(t *testing.T) {
var g Object = PO(10, 20)
expect(t, string(g.AppendJSON(nil)) == `{"type":"Point","coordinates":[10,20]}`)
expect(t, g.Rect() == R(10, 20, 10, 20))
expect(t, g.Center() == P(10, 20))
expect(t, !g.Empty())
}
// func TestPointPoly(t *testing.T) {
// p := expectJSON(t, `{"type":"Point","coordinates":[15,15,0]}`, nil)
// expect(t, p.Within(PO(15, 15)))
// expect(t, p.Contains(PO(15, 15)))
// expect(t, p.Contains(RO(15, 15, 15, 15)))
// expect(t, !p.Contains(RO(10, 10, 15, 15)))
// expect(t, !p.Contains(PO(10, 10)))
// expect(t, p.Intersects(PO(15, 15)))
// expect(t, p.Intersects(RO(10, 10, 20, 20)))
// expect(t, p.Intersects(
// expectJSON(t, `{"type":"Point","coordinates":[15,15,10]}`, nil),
// ))
// expect(t, !p.Intersects(
// expectJSON(t, `{"type":"Point","coordinates":[9,15,10]}`, nil),
// ))
// expect(t, p.Intersects(
// expectJSON(t, `{"type":"Point","coordinates":[9,15,10],"bbox":[10,10,20,20]}`, nil),
// ))
// expect(t, p.Intersects(
// expectJSON(t, `{"type":"LineString","coordinates":[
// [10,10],[20,20]
// ]}`, nil),
// ))
// expect(t, !p.Intersects(
// expectJSON(t, `{"type":"LineString","coordinates":[
// [9,10],[20,20]
// ]}`, nil),
// ))
// expect(t, p.Intersects(
// expectJSON(t, `{"type":"Polygon","coordinates":[
// [[9,9],[9,21],[21,21],[21,9],[9,9]]
// ]}`, nil),
// ))
// expect(t, !p.Intersects(
// expectJSON(t, `{"type":"Polygon","coordinates":[
// [[9,9],[9,21],[21,21],[21,9],[9,9]],
// [[9.5,9.5],[9.5,20.5],[20.5,20.5],[20.5,9.5],[9.5,9.5]]
// ]}`, nil),
// ))
// expect(t, p.Intersects(
// expectJSON(t, `{"type":"Feature","geometry":
// {"type":"Point","coordinates":[15,15,10]}
// }`, nil),
// ))
// expect(t, p.Intersects(
// expectJSON(t, `{"type":"Feature","geometry":
// {"type":"Polygon","coordinates":[
// [[9,9],[9,21],[21,21],[21,9],[9,9]]
// ]}
// }`, nil),
// ))
// expect(t, !p.Intersects(
// expectJSON(t, `{"type":"Feature","geometry":
// {"type":"Polygon","coordinates":[
// [[9,9],[9,21],[21,21],[21,9],[9,9]],
// [[9.5,9.5],[9.5,20.5],[20.5,20.5],[20.5,9.5],[9.5,9.5]]
// ]}
// }`, nil),
// ))
// expect(t, !expectJSON(t,
// `{"type":"Point","coordinates":[15,15],"bbox":[10,10,15,15]}`, nil,
// ).Contains(PO(7, 7)))
// expect(t, expectJSON(t,
// `{"type":"Point","coordinates":[15,15],"bbox":[10,10,15,15]}`, nil,
// ).Contains(PO(12, 12)))
// expect(t, !expectJSON(t,
// `{"type":"Point","coordinates":[15,15],"bbox":[10,10,15,15]}`, nil,
// ).Intersects(PO(7, 7)))
// expect(t, expectJSON(t,
// `{"type":"Point","coordinates":[15,15],"bbox":[10,10,15,15]}`, nil,
// ).Intersects(PO(12, 12)))
// }