func TestSelectRelationPolygonsMultiple(t *testing.T) {
mapping, err := NewMapping("test_mapping.json")
if err != nil {
t.Fatal(err)
}
r := element.Relation{}
r.Tags = element.Tags{"landuse": "park"}
r.Members = []element.Member{
makeMember(0, element.Tags{"landuse": "park"}),
makeMember(1, element.Tags{"natural": "forest"}),
makeMember(2, element.Tags{"landuse": "park"}),
makeMember(3, element.Tags{"highway": "pedestrian"}),
makeMember(4, element.Tags{"landuse": "park", "layer": "2", "name": "foo"}),
}
filtered := SelectRelationPolygons(
mapping.PolygonMatcher(),
&r,
)
if len(filtered) != 3 {
t.Fatal(filtered)
}
if filtered[0].Id != 0 || filtered[1].Id != 2 || filtered[2].Id != 4 {
t.Fatal(filtered)
}
}
func TestMatcherMappingOrder(t *testing.T) {
elem := element.Relation{}
polys := mapping.PolygonMatcher()
/*
landusages mapping has the following order,
check that XxxMatcher always uses the first
amenity:
- university
landuse:
- forest
leisure:
- park
landuse:
- park
*/
elem.Tags = element.Tags{"landuse": "forest", "leisure": "park"}
matchesEqual(t, []Match{{"landuse", "forest", DestTable{Name: "landusages"}, nil}}, polys.MatchRelation(&elem))
elem.Tags = element.Tags{"landuse": "park", "leisure": "park"}
matchesEqual(t, []Match{{"leisure", "park", DestTable{Name: "landusages"}, nil}}, polys.MatchRelation(&elem))
elem.Tags = element.Tags{"landuse": "park", "leisure": "park", "amenity": "university"}
matchesEqual(t, []Match{{"amenity", "university", DestTable{Name: "landusages"}, nil}}, polys.MatchRelation(&elem))
}
func TestInsertMultipleTags(t *testing.T) {
w1 := makeWay(1, element.Tags{"landusage": "forest", "highway": "secondary"}, []coord{
{1, 0, 0},
{2, 10, 0},
{3, 10, 10},
})
w2 := makeWay(2, element.Tags{"highway": "secondary"}, []coord{
{3, 10, 10},
{4, 0, 10},
{1, 0, 0},
})
rel := element.Relation{OSMElem: element.OSMElem{Id: 1, Tags: element.Tags{"landusage": "forest"}}}
rel.Members = []element.Member{
{1, element.WAY, "outer", &w1}, // also highway=secondary
{2, element.WAY, "inner", &w2},
}
BuildRelation(&rel, 3857)
g := geos.NewGeos()
defer g.Finish()
if rel.Tags["landusage"] != "forest" {
t.Fatal("wrong rel tags", rel.Tags)
}
if !g.IsValid(rel.Geom.Geom) {
t.Fatal("geometry not valid", g.AsWkt(rel.Geom.Geom))
}
if area := rel.Geom.Geom.Area(); area != 100 {
t.Fatal("area invalid", area)
}
}
func TestMultiPolygonWithMultipleHoles(t *testing.T) {
w1 := makeWay(1, element.Tags{"landusage": "forest"}, []coord{
{1, 0, 0},
{2, 10, 0},
{3, 10, 10},
{4, 0, 10},
{1, 0, 0},
})
w2 := makeWay(1, element.Tags{"water": "basin"}, []coord{
{1, 1, 1},
{2, 2, 1},
{3, 2, 2},
{4, 1, 2},
{1, 1, 1},
})
w3 := makeWay(3, element.Tags{"landusage": "scrub"}, []coord{
{1, 3, 3},
{2, 4, 3},
{3, 4, 4},
{4, 3, 4},
{1, 3, 3},
})
rel := element.Relation{
OSMElem: element.OSMElem{Id: 1, Tags: element.Tags{"landusage": "forest"}}}
rel.Members = []element.Member{
{1, element.WAY, "outer", &w1},
{2, element.WAY, "inner", &w2},
{3, element.WAY, "inner", &w3},
}
geom, err := buildRelation(&rel, 3857)
if err != nil {
t.Fatal(err)
}
g := geos.NewGeos()
defer g.Finish()
// if len(rel.Tags) != 1 {
// t.Fatal("wrong rel tags", rel.Tags)
// }
// if rel.Tags["landusage"] != "forest" {
// t.Fatal("wrong rel tags", rel.Tags)
// }
if !g.IsValid(geom.Geom) {
t.Fatal("geometry not valid", g.AsWkt(geom.Geom))
}
if area := geom.Geom.Area(); area != 100-1-1 {
t.Fatal("area invalid", area)
}
}
func TestTouchingPolygonsWithHole(t *testing.T) {
w1 := makeWay(1, element.Tags{"water": "riverbank"}, []coord{
{1, 0, 0},
{2, 10, 0},
{3, 10, 10},
{4, 0, 10},
{1, 0, 0},
})
w2 := makeWay(2, element.Tags{"water": "riverbank"}, []coord{
{2, 10, 0},
{5, 30, 0},
{6, 30, 10},
{3, 10, 10},
{2, 10, 0},
})
w3 := makeWay(3, element.Tags{"landusage": "forest"}, []coord{
{7, 2, 2},
{8, 8, 2},
{9, 8, 8},
{10, 2, 8},
{7, 2, 2},
})
rel := element.Relation{OSMElem: element.OSMElem{Id: 1, Tags: element.Tags{"water": "riverbank"}}}
rel.Members = []element.Member{
{1, element.WAY, "outer", &w1},
{2, element.WAY, "outer", &w2},
{3, element.WAY, "inner", &w3},
}
geom, err := buildRelation(&rel, 3857)
if err != nil {
t.Fatal(err)
}
g := geos.NewGeos()
defer g.Finish()
// if len(rel.Tags) != 1 {
// t.Fatal("wrong rel tags", rel.Tags)
// }
// if rel.Tags["water"] != "riverbank" {
// t.Fatal("wrong rel tags", rel.Tags)
// }
if !g.IsValid(geom.Geom) {
t.Fatal("geometry not valid", g.AsWkt(geom.Geom))
}
if area := geom.Geom.Area(); area != 100+200-36 {
t.Fatal("area invalid", area)
}
}
func BenchmarkTagMatch(b *testing.B) {
m, err := NewMapping("matcher_test_mapping.json")
if err != nil {
b.Fatal(err)
}
matcher := m.PolygonMatcher()
for i := 0; i < b.N; i++ {
e := element.Relation{}
e.Tags = element.Tags{"landuse": "forest", "name": "Forest", "source": "bling", "tourism": "zoo"}
if m := matcher.MatchRelation(&e); len(m) != 1 {
b.Fatal(m)
}
}
}
func TestMultiPolygonWithHoleAndRelName(t *testing.T) {
w1 := makeWay(1, element.Tags{"natural": "forest", "name": "Blackwood"}, []coord{
{1, 0, 0},
{2, 10, 0},
{3, 10, 10},
{4, 0, 10},
{1, 0, 0},
})
w2 := makeWay(1, element.Tags{"landusage": "scrub"}, []coord{
{5, 2, 2},
{6, 8, 2},
{7, 8, 8},
{8, 2, 8},
{5, 2, 2},
})
rel := element.Relation{
OSMElem: element.OSMElem{Id: 1, Tags: element.Tags{"name": "rel"}}}
rel.Members = []element.Member{
{1, element.WAY, "outer", &w1},
{2, element.WAY, "inner", &w2},
}
geom, err := buildRelation(&rel, 3857)
if err != nil {
t.Fatal(err)
}
g := geos.NewGeos()
defer g.Finish()
// if len(rel.Tags) != 2 {
// t.Fatal("wrong rel tags", rel.Tags)
// }
// if rel.Tags["natural"] != "forest" || rel.Tags["name"] != "Blackwood" {
// t.Fatal("wrong rel tags", rel.Tags)
// }
if !g.IsValid(geom.Geom) {
t.Fatal("geometry not valid", g.AsWkt(geom.Geom))
}
if area := geom.Geom.Area(); area != 64 {
t.Fatal("aread not 64", area)
}
}
func TestPolygonFromThreeWays(t *testing.T) {
w1 := makeWay(1, element.Tags{"landusage": "forest"}, []coord{
{1, 0, 0},
{2, 10, 0},
{3, 10, 10},
})
w2 := makeWay(2, element.Tags{"landusage": "water"}, []coord{
{3, 10, 10},
{4, 0, 10},
})
w3 := makeWay(3, element.Tags{"landusage": "forest"}, []coord{
{4, 0, 10},
{1, 0, 0},
})
rel := element.Relation{OSMElem: element.OSMElem{Id: 1}}
rel.Members = []element.Member{
{1, element.WAY, "outer", &w1},
{2, element.WAY, "inner", &w2},
{3, element.WAY, "inner", &w3},
}
geom, err := buildRelation(&rel, 3857)
if err != nil {
t.Fatal(err)
}
g := geos.NewGeos()
defer g.Finish()
if len(rel.Tags) != 1 {
t.Fatal("wrong rel tags", rel.Tags)
}
if rel.Tags["landusage"] != "forest" {
t.Fatal("wrong rel tags", rel.Tags)
}
if !g.IsValid(geom.Geom) {
t.Fatal("geometry not valid", g.AsWkt(geom.Geom))
}
if area := geom.Geom.Area(); area != 100 {
t.Fatal("area invalid", area)
}
}
// PrepareRelation is the first step in building a (multi-)polygon of a Relation.
// It builds rings from all ways and returns an error if there are unclosed rings.
// It also merges the Relation.Tags with the Tags of the outer way.
func PrepareRelation(rel *element.Relation, srid int, maxRingGap float64) (PreparedRelation, error) {
rings, err := buildRings(rel, maxRingGap)
if err != nil {
return PreparedRelation{}, err
}
rel.Tags = relationTags(rel.Tags, rings[0].ways[0].Tags)
return PreparedRelation{rings, rel, srid}, nil
}
func PrepareRelation(rel *element.Relation, srid int) (*preparedRelation, error) {
rings, err := BuildRings(rel)
if err != nil {
return nil, err
}
rel.Tags = relationTags(rel.Tags, rings[0].ways[0].Tags)
return &preparedRelation{rings, rel, srid}, nil
}
func TestOpenRing(t *testing.T) {
w1 := makeWay(1, element.Tags{}, []coord{
{1, 0, 0},
{2, 10, 0},
{3, 10, 10},
{4, 0, 10},
})
rel := element.Relation{
OSMElem: element.OSMElem{Id: 1, Tags: element.Tags{}}}
rel.Members = []element.Member{
{1, element.WAY, "outer", &w1},
}
_, err := buildRelation(&rel, 3857)
if err == nil {
t.Fatal("no error from open ring")
}
}
func TestSimplePolygonWithHole(t *testing.T) {
w1 := makeWay(1, element.Tags{}, []coord{
{1, 0, 0},
{2, 10, 0},
{3, 10, 10},
{4, 0, 10},
{1, 0, 0},
})
w2 := makeWay(2, element.Tags{}, []coord{
{5, 2, 2},
{6, 8, 2},
{7, 8, 8},
{8, 2, 8},
{5, 2, 2},
})
rel := element.Relation{
OSMElem: element.OSMElem{Id: 1, Tags: element.Tags{}}}
rel.Members = []element.Member{
{1, element.WAY, "outer", &w1},
{2, element.WAY, "inner", &w2},
}
geom, err := buildRelation(&rel, 3857)
if err != nil {
t.Fatal(err)
}
g := geos.NewGeos()
defer g.Finish()
if len(rel.Tags) != 0 {
t.Fatal("wrong rel tags", rel.Tags)
}
if !g.IsValid(geom.Geom) {
t.Fatal("geometry not valid", g.AsWkt(geom.Geom))
}
if area := geom.Geom.Area(); area != 100-36 {
t.Fatal("area invalid", area)
}
}
// PrepareRelation is the first step in building a (multi-)polygon of a Relation.
// It builds rings from all ways and returns an error if there are unclosed rings.
// It also merges the Relation.Tags with the Tags of the outer way.
func PrepareRelation(rel *element.Relation, srid int, maxRingGap float64) (PreparedRelation, error) {
rings, err := buildRings(rel, maxRingGap)
if err != nil {
return PreparedRelation{}, err
}
if rel.Tags["type"] == "multipolygon" && len(rel.Tags) == 1 {
rel.Tags = relationTags(rel.Tags, rings[0].ways[0].Tags) //merge the Relation.Tags with the Tags of the outer way was removed
}
return PreparedRelation{rings, rel, srid}, nil
}
func TestInsertedWaysDifferentTags(t *testing.T) {
w1 := makeWay(1, element.Tags{"landusage": "forest"}, []coord{
{1, 0, 0},
{2, 10, 0},
{3, 10, 10},
})
w2 := makeWay(2, element.Tags{"highway": "secondary"}, []coord{
{3, 10, 10},
{4, 0, 10},
{1, 0, 0},
})
rel := element.Relation{OSMElem: element.OSMElem{Id: 1, Tags: element.Tags{"landusage": "forest"}}}
rel.Members = []element.Member{
{1, element.WAY, "outer", &w1},
{2, element.WAY, "inner", &w2},
}
geom, err := buildRelation(&rel, 3857)
if err != nil {
t.Fatal(err)
}
g := geos.NewGeos()
defer g.Finish()
// if len(rel.Tags) != 1 {
// t.Fatal("wrong rel tags", rel.Tags)
// }
// if rel.Tags["landusage"] != "forest" {
// t.Fatal("wrong rel tags", rel.Tags)
// }
if !g.IsValid(geom.Geom) {
t.Fatal("geometry not valid", g.AsWkt(geom.Geom))
}
if area := geom.Geom.Area(); area != 100 {
t.Fatal("area invalid", area)
}
}
func TestSelectRelationPolygonsMultipleTags(t *testing.T) {
mapping, err := NewMapping("test_mapping.json")
if err != nil {
t.Fatal(err)
}
r := element.Relation{}
r.Tags = element.Tags{"landuse": "forest", "natural": "scrub"}
r.Members = []element.Member{
makeMember(0, element.Tags{"natural": "scrub"}),
makeMember(1, element.Tags{"landuse": "forest"}),
}
filtered := SelectRelationPolygons(
mapping.PolygonMatcher(),
&r,
)
// TODO both should be filterd out, but we only get one,
// because we match only one tag per table
if len(filtered) != 1 {
t.Fatal(filtered)
}
}
func TestSelectRelationPolygonsUnrelatedTags(t *testing.T) {
mapping, err := NewMapping("test_mapping.json")
if err != nil {
t.Fatal(err)
}
r := element.Relation{}
r.Tags = element.Tags{"landuse": "park"}
r.Members = []element.Member{
makeMember(0, element.Tags{"landuse": "park", "layer": "2", "name": "foo"}),
makeMember(1, element.Tags{"landuse": "forest"}),
}
filtered := SelectRelationPolygons(
mapping.PolygonMatcher(),
&r,
)
if len(filtered) != 1 {
t.Fatal(filtered)
}
if filtered[0].Id != 0 {
t.Fatal(filtered)
}
}
func TestClosedAndOpenRing(t *testing.T) {
w1 := makeWay(1, element.Tags{}, []coord{
{1, 0, 0},
{2, 10, 0},
{3, 10, 10},
{4, 0, 10},
{1, 0, 0},
})
w2 := makeWay(2, element.Tags{}, []coord{
{5, 0, 0},
{6, -5, -2},
})
rel := element.Relation{
OSMElem: element.OSMElem{Id: 1, Tags: element.Tags{}}}
rel.Members = []element.Member{
{1, element.WAY, "outer", &w1},
{2, element.WAY, "outer", &w2},
}
prep, err := PrepareRelation(&rel, 3857, 0.1)
if err != nil {
t.Fatal(err)
}
// open ring is excluded
if len(prep.rings) != 1 {
t.Fatal("expected single ring")
}
geom, err := prep.Build()
if err != nil {
t.Fatal(err)
}
g := geos.NewGeos()
defer g.Finish()
if !g.IsValid(geom.Geom) {
t.Fatal("geometry not valid", g.AsWkt(geom.Geom))
}
}
func BuildRelation(rel *element.Relation, srid int) error {
rings, err := BuildRings(rel)
if err != nil {
return err
}
rel.Tags = relationTags(rel.Tags, rings[0].ways[0].Tags)
_, err = BuildRelGeometry(rel, rings, srid)
if err != nil {
return err
}
return nil
}
func TestSelectRelationPolygonsSimple(t *testing.T) {
mapping, err := NewMapping("test_mapping.json")
if err != nil {
t.Fatal(err)
}
r := element.Relation{}
r.Tags = element.Tags{"landuse": "park"}
r.Members = []element.Member{
makeMember(0, element.Tags{"landuse": "forest"}),
makeMember(1, element.Tags{"landuse": "park"}),
makeMember(2, element.Tags{"waterway": "riverbank"}),
makeMember(4, element.Tags{"foo": "bar"}),
}
filtered := SelectRelationPolygons(
mapping.PolygonMatcher(),
&r,
)
if len(filtered) != 1 {
t.Fatal(filtered)
}
if filtered[0].Id != 1 {
t.Fatal(filtered[0])
}
}
func TestSelectRelationPolygonsMultipleTagsOnWay(t *testing.T) {
mapping, err := NewMapping("test_mapping.json")
if err != nil {
t.Fatal(err)
}
r := element.Relation{}
r.Tags = element.Tags{"waterway": "riverbank"}
r.Members = []element.Member{
makeMemberRole(0, element.Tags{"waterway": "riverbank", "natural": "water"}, "outer"),
makeMemberRole(1, element.Tags{"natural": "water"}, "inner"),
makeMemberRole(2, element.Tags{"place": "islet"}, "inner"),
}
filtered := SelectRelationPolygons(
mapping.PolygonMatcher(),
&r,
)
if len(filtered) != 1 {
t.Fatal(filtered)
}
if filtered[0].Id != 0 {
t.Fatal(filtered)
}
}
func TestMultiPolygonWithNeastedHoles(t *testing.T) {
w1 := makeWay(1, element.Tags{"landusage": "forest"}, []coord{
{1, 0, 0},
{2, 10, 0},
{3, 10, 10},
{4, 0, 10},
{1, 0, 0},
})
w2 := makeWay(2, element.Tags{"landusage": "scrub"}, []coord{
{1, 1, 1},
{2, 9, 1},
{3, 9, 9},
{4, 1, 9},
{1, 1, 1},
})
w3 := makeWay(3, element.Tags{}, []coord{
{1, 2, 2},
{2, 8, 2},
{3, 8, 8},
{4, 2, 8},
{1, 2, 2},
})
w4 := makeWay(4, element.Tags{"landusage": "scrub"}, []coord{
{1, 3, 3},
{2, 7, 3},
{3, 7, 7},
{4, 3, 7},
{1, 3, 3},
})
w5 := makeWay(5, element.Tags{"landusage": "forest"}, []coord{
{1, 4, 4},
{2, 6, 4},
{3, 6, 6},
{4, 4, 6},
{1, 4, 4},
})
rel := element.Relation{OSMElem: element.OSMElem{Id: 1}}
rel.Members = []element.Member{
{1, element.WAY, "outer", &w1},
{2, element.WAY, "inner", &w2},
{3, element.WAY, "inner", &w3},
{4, element.WAY, "inner", &w4},
{5, element.WAY, "inner", &w5},
}
geom, err := buildRelation(&rel, 3857)
if err != nil {
t.Fatal(err)
}
g := geos.NewGeos()
defer g.Finish()
// if len(rel.Tags) != 1 {
// t.Fatal("wrong rel tags", rel.Tags)
// }
// if rel.Tags["landusage"] != "forest" {
// t.Fatal("wrong rel tags", rel.Tags)
// }
if !g.IsValid(geom.Geom) {
t.Fatal("geometry not valid", g.AsWkt(geom.Geom))
}
if area := geom.Geom.Area(); area != 100-64+36-16+4 {
t.Fatal("area invalid", area)
}
}
// BuildRelGeometry builds the geometry of rel by creating a multipolygon of all rings.
// rings need to be sorted by area (large to small).
func BuildRelGeometry(rel *element.Relation, rings []*Ring, srid int) (*geos.Geom, error) {
g := geos.NewGeos()
g.SetHandleSrid(srid)
defer g.Finish()
totalRings := len(rings)
shells := map[*Ring]bool{rings[0]: true}
for i := 0; i < totalRings; i++ {
testGeom := g.Prepare(rings[i].geom)
if testGeom == nil {
return nil, errors.New("Error while preparing geometry")
}
for j := i + 1; j < totalRings; j++ {
if g.PreparedContains(testGeom, rings[j].geom) {
if rings[j].containedBy != -1 {
// j is inside a larger ring, remove that relationship
// e.g. j is hole inside a hole (i)
delete(rings[rings[j].containedBy].holes, rings[j])
delete(shells, rings[j])
}
// remember parent
rings[j].containedBy = i
// add ring as hole or shell
if ringIsHole(rings, j) {
rings[i].holes[rings[j]] = true
} else {
shells[rings[j]] = true
}
}
}
if rings[i].containedBy == -1 {
// add as shell if it is not a hole
shells[rings[i]] = true
}
g.PreparedDestroy(testGeom)
}
var polygons []*geos.Geom
for shell, _ := range shells {
var interiors []*geos.Geom
for hole, _ := range shell.holes {
hole.MarkInserted(rel.Tags)
ring := g.Clone(g.ExteriorRing(hole.geom))
g.Destroy(hole.geom)
if ring == nil {
return nil, errors.New("Error while getting exterior ring.")
}
interiors = append(interiors, ring)
}
shell.MarkInserted(rel.Tags)
exterior := g.Clone(g.ExteriorRing(shell.geom))
g.Destroy(shell.geom)
if exterior == nil {
return nil, errors.New("Error while getting exterior ring.")
}
polygon := g.Polygon(exterior, interiors)
if polygon == nil {
return nil, errors.New("Error while building polygon.")
}
polygons = append(polygons, polygon)
}
var result *geos.Geom
if len(polygons) == 1 {
result = polygons[0]
} else {
result = g.MultiPolygon(polygons)
if result == nil {
return nil, errors.New("Error while building multi-polygon.")
}
}
if !g.IsValid(result) {
buffered := g.Buffer(result, 0)
if buffered == nil {
return nil, errors.New("Error while fixing geom with buffer(0)")
}
g.Destroy(result)
result = buffered
}
g.DestroyLater(result)
insertedWays := make(map[int64]bool)
for _, r := range rings {
for id, _ := range r.inserted {
insertedWays[id] = true
}
}
wkb := g.AsEwkbHex(result)
if wkb == nil {
return nil, errors.New("unable to create WKB for relation")
}
rel.Geom = &element.Geometry{Geom: result, Wkb: wkb}
return result, nil
}
func TestBrokenPolygonSelfIntersect(t *testing.T) {
// 2##3 6##7
// # # ####
// 1##4____5##8
w1 := makeWay(1, element.Tags{}, []coord{
{1, 0, 0},
{2, 0, 10},
{3, 10, 10},
{4, 10, 0},
{5, 20, 0},
{6, 20, 10},
{7, 30, 10},
{8, 30, 0},
{1, 0, 0},
})
w2 := makeWay(2, element.Tags{}, []coord{
{15, 2, 2},
{16, 8, 2},
{17, 8, 8},
{18, 2, 8},
{15, 2, 2},
})
rel1 := element.Relation{OSMElem: element.OSMElem{Id: 1}}
rel1.Members = []element.Member{
{1, element.WAY, "outer", &w1},
{2, element.WAY, "inner", &w2},
}
geom1, err := buildRelation(&rel1, 3857)
if err != nil {
t.Fatal(err)
}
g := geos.NewGeos()
defer g.Finish()
// if len(rel1.Tags) != 0 {
// t.Fatal("wrong rel tags", rel1.Tags)
// }
if !g.IsValid(geom1.Geom) {
t.Fatal("geometry not valid", g.AsWkt(geom1.Geom))
}
if area := geom1.Geom.Area(); area != 200-36 {
t.Fatal("area invalid", area)
}
// 2##3 6##7
// # # ####
// 1##4____5##8
w3 := makeWay(1, element.Tags{}, []coord{
{4, 10, 0},
{1, 0, 0},
{2, 0, 10},
{3, 10, 10},
{4, 10, 0},
{5, 20, 0},
{6, 20, 10},
{7, 30, 10},
{8, 30, 0},
{4, 10, 0},
})
rel2 := element.Relation{OSMElem: element.OSMElem{Id: 1}}
rel2.Members = []element.Member{
{1, element.WAY, "outer", &w3},
{2, element.WAY, "inner", &w2},
}
geom2, err := buildRelation(&rel2, 3857)
if err != nil {
t.Fatal(err)
}
g = geos.NewGeos()
defer g.Finish()
// if len(rel2.Tags) != 0 {
// t.Fatal("wrong rel tags", rel2.Tags)
// }
if !g.IsValid(geom2.Geom) {
t.Fatal("geometry not valid", g.AsWkt(geom2.Geom))
}
if area := geom2.Geom.Area(); area != 200-36 {
t.Fatal("area invalid", area)
}
}
func TestBrokenPolygonSelfIntersectTriangle(t *testing.T) {
// 2###
// # ###4
// # ###3
// 1###
// triangle with four points, minor overlapping
w1 := makeWay(1, element.Tags{}, []coord{
{1, 0, 0},
{2, 0, 100},
{3, 100, 50 - 0.00001},
{4, 100, 50 + 0.00001},
{1, 0, 0},
})
w2 := makeWay(2, element.Tags{}, []coord{
{15, 10, 45},
{16, 10, 55},
{17, 20, 55},
{18, 20, 45},
{15, 10, 45},
})
rel := element.Relation{OSMElem: element.OSMElem{Id: 1}}
rel.Members = []element.Member{
{1, element.WAY, "outer", &w1},
{2, element.WAY, "inner", &w2},
}
geom, err := buildRelation(&rel, 3857)
if err != nil {
t.Fatal(err)
}
g := geos.NewGeos()
defer g.Finish()
if !g.IsValid(geom.Geom) {
t.Fatal("geometry not valid", g.AsWkt(geom.Geom))
}
area := geom.Geom.Area()
// as for python assertAlmostEqual(a, b) round(a-b, 7) == 0
if math.Abs(area-(100*100/2-100)) > 0.01 {
t.Fatal("area invalid", area)
}
// larger overlap
w3 := makeWay(1, element.Tags{}, []coord{
{1, 0, 0},
{2, 0, 100},
{3, 100, 50 - 1},
{4, 100, 50 + 1},
{1, 0, 0},
})
w4 := makeWay(2, element.Tags{}, []coord{
{15, 10, 45},
{16, 10, 55},
{17, 20, 55},
{18, 20, 45},
{15, 10, 45},
})
rel = element.Relation{OSMElem: element.OSMElem{Id: 1}}
rel.Members = []element.Member{
{1, element.WAY, "outer", &w3},
{2, element.WAY, "inner", &w4},
}
geom, err = buildRelation(&rel, 3857)
if err != nil {
t.Fatal(err)
}
if !g.IsValid(geom.Geom) {
t.Fatal("geometry not valid", g.AsWkt(geom.Geom))
}
area = geom.Geom.Area()
if math.Abs((area - (100*98/2 - 100))) > 10 {
t.Fatal("area invalid", area)
}
}
func TestPolygonMatcher(t *testing.T) {
elem := element.Relation{}
polys := mapping.PolygonMatcher()
elem.Tags = element.Tags{"unknown": "baz"}
matchesEqual(t, []Match{}, polys.MatchRelation(&elem))
elem.Tags = element.Tags{"landuse": "unknowns"}
matchesEqual(t, []Match{}, polys.MatchRelation(&elem))
elem.Tags = element.Tags{"building": "yes"}
matchesEqual(t, []Match{{"building", "yes", DestTable{"buildings", ""}, nil}}, polys.MatchRelation(&elem))
elem.Tags = element.Tags{"building": "residential"}
matchesEqual(t, []Match{{"building", "residential", DestTable{"buildings", ""}, nil}}, polys.MatchRelation(&elem))
elem.Tags = element.Tags{"building": "shop"}
matchesEqual(t, []Match{
{"building", "shop", DestTable{"buildings", ""}, nil},
{"building", "shop", DestTable{"amenity_areas", ""}, nil}},
polys.MatchRelation(&elem))
elem.Tags = element.Tags{"landuse": "farm"}
matchesEqual(t, []Match{{"landuse", "farm", DestTable{"landusages", ""}, nil}}, polys.MatchRelation(&elem))
elem.Tags = element.Tags{"landuse": "farm", "highway": "secondary"}
matchesEqual(t, []Match{{"landuse", "farm", DestTable{"landusages", ""}, nil}}, polys.MatchRelation(&elem))
elem.Tags = element.Tags{"landuse": "farm", "aeroway": "apron"}
matchesEqual(t,
[]Match{
{"aeroway", "apron", DestTable{"transport_areas", ""}, nil},
{"landuse", "farm", DestTable{"landusages", ""}, nil}},
polys.MatchRelation(&elem))
elem.Tags = element.Tags{"highway": "footway"}
matchesEqual(t, []Match{{"highway", "footway", DestTable{"landusages", ""}, nil}}, polys.MatchRelation(&elem))
elem.Tags = element.Tags{"boundary": "administrative", "admin_level": "8"}
matchesEqual(t, []Match{{"boundary", "administrative", DestTable{"admin", ""}, nil}}, polys.MatchRelation(&elem))
}