93 lines
1.8 KiB
Go
93 lines
1.8 KiB
Go
package geom
|
|
|
|
import (
|
|
"goposm/element"
|
|
"goposm/geom/geos"
|
|
"testing"
|
|
)
|
|
|
|
func TestLineString(t *testing.T) {
|
|
nodes := make([]element.Node, 2)
|
|
nodes[0] = element.Node{Lat: 0, Long: 0}
|
|
nodes[1] = element.Node{Lat: 0, Long: 10}
|
|
g := geos.NewGeos()
|
|
defer g.Finish()
|
|
geom, err := LineString(g, nodes)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if geom.Length() != 10.0 {
|
|
t.Fatal(geom.Length)
|
|
}
|
|
}
|
|
|
|
func TestPolygon(t *testing.T) {
|
|
nodes := []element.Node{
|
|
element.Node{Lat: 0, Long: 0},
|
|
element.Node{Lat: 0, Long: 10},
|
|
element.Node{Lat: 10, Long: 10},
|
|
element.Node{Lat: 0, Long: 0},
|
|
}
|
|
g := geos.NewGeos()
|
|
defer g.Finish()
|
|
geom, err := Polygon(g, nodes)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if geom.Area() != 50.0 {
|
|
t.Fatal(geom.Area())
|
|
}
|
|
}
|
|
|
|
func TestPolygonNotClosed(t *testing.T) {
|
|
nodes := []element.Node{
|
|
element.Node{Lat: 0, Long: 0},
|
|
element.Node{Lat: 0, Long: 10},
|
|
element.Node{Lat: 10, Long: 10},
|
|
}
|
|
g := geos.NewGeos()
|
|
defer g.Finish()
|
|
_, err := Polygon(g, nodes)
|
|
if err == nil {
|
|
t.Fatal("no error")
|
|
}
|
|
}
|
|
|
|
func TestPolygonIntersection(t *testing.T) {
|
|
nodes := []element.Node{
|
|
element.Node{Lat: 0, Long: 0},
|
|
element.Node{Lat: 0, Long: 10},
|
|
element.Node{Lat: 10, Long: 10},
|
|
element.Node{Lat: 10, Long: 0},
|
|
element.Node{Lat: 0, Long: 0},
|
|
}
|
|
g := geos.NewGeos()
|
|
defer g.Finish()
|
|
geom, err := Polygon(g, nodes)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
result := g.Intersection(geom, g.FromWkt("LINESTRING(-10 5, 20 5)"))
|
|
|
|
if !g.Equals(result, g.FromWkt("LINESTRING(0 5, 10 5)")) {
|
|
t.Fatal(g.AsWkt(result))
|
|
}
|
|
}
|
|
|
|
func BenchmarkLineString(b *testing.B) {
|
|
size := 16
|
|
nodes := make([]element.Node, size)
|
|
for i := 0; i < size; i++ {
|
|
nodes[i] = element.Node{Lat: 0, Long: float64(i)}
|
|
}
|
|
g := geos.NewGeos()
|
|
defer g.Finish()
|
|
|
|
for i := 0; i < b.N; i++ {
|
|
LineString(g, nodes)
|
|
}
|
|
}
|