func TestUnProjectESPG3857(t *testing.T) {
point := geometry.NewPoint(
-13042847.101257065,
3858205.880090526,
)
latLng := NewEspg3857().UnProject(point)
if latLng.Lat != 32.720064477996 || latLng.Lng != -117.16588899493217 {
t.Errorf("ESPG3857 unproject failed: %+v", latLng)
}
}
func TestUnTransformESPG3857(t *testing.T) {
point := geometry.NewPoint(
1.0000022299196951,
0.9999948419882011,
)
p := NewEspg3857().UnTransform(point, 2.0)
if p.X != 44.68203449467896 || p.Y != 103.35370445267007 {
t.Errorf("espg3857 failed to untransform point: %+v", p)
}
}
func TestTransformESPG3857(t *testing.T) {
point := geometry.NewPoint(
44.68203449249269,
103.35370445251465,
)
p := NewEspg3857().Transform(point, 2.0)
if p.X != 1.0000022299196951 || p.Y != 0.9999948419882011 {
t.Errorf("espg3857 failed to transform point: %+v", p)
}
}
func TestCetnterBoundsZoom(t *testing.T) {
bounds := geo.NewLatLngBounds(
32.7204706651118, -117.16439634561537,
32.71965828903011, -117.1673735976219,
)
size := geometry.NewPoint(1107, 360)
proj := crs.NewEspg3857()
// first test should max out at 30
center, zoom := CenterBoundsZoom(proj, bounds, size, 30.0)
if zoom != 18.0 {
t.Errorf("boundZoom failed to zoom correctly: %v", zoom)
}
if center.Lat != 32.720064477996 || center.Lng != -117.16588497161865 {
t.Errorf("center calulated incorrectly: %+v", center)
}
}
func TestPointToLatLngESPG3857(t *testing.T) {
point := geometry.NewPoint(
44.68203449249269,
103.35370445251465,
)
// coordinate ref system
crs := NewEspg3857()
// no scale
latLng := PointToLatLng(crs, point, 0.0)
if latLng.Lat != 32.720064477996 || latLng.Lng != -117.16588899493217 {
t.Errorf("espg3857 failed to convert point to latLng: %v", latLng)
}
// 2x scale
latLng = PointToLatLng(crs, point, 2.0)
if latLng.Lat != 80.6838883930096 || latLng.Lng != -164.29147224873307 {
t.Errorf("espg3857 failed to convert point to latLng: %v", latLng)
}
}
func TestBoundsZoom(t *testing.T) {
bounds := geo.NewLatLngBounds(
32.7204706651118, -117.16439634561537,
32.71965828903011, -117.1673735976219,
)
size := geometry.NewPoint(1107, 360)
proj := crs.NewEspg3857()
// first test should max out at 30
zoom := BoundsZoom(proj, bounds, size, 30.0)
if zoom != 18.0 {
t.Error("boundZoom failed to zoom correctly")
}
// make sure the max zoom works
zoom = BoundsZoom(proj, bounds, size, 16.0)
if zoom != 16.0 {
t.Error("boundZoom failed to zoom correctly")
}
}