/
geometry.go
71 lines (59 loc) · 1.25 KB
/
geometry.go
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package data
import (
"database/sql/driver"
"github.com/paulmach/go.geo"
)
type TemporalPath struct {
path *geo.Path
}
func (l *TemporalPath) Coordinates() [][]float64 {
if l.path == nil {
return make([][]float64, 0)
}
ps := l.path.Points()
c := make([][]float64, len(ps))
for i, p := range ps {
c[i] = []float64{p.Lng(), p.Lat()}
}
return c
}
func (l *TemporalPath) Scan(data interface{}) error {
path := &geo.Path{}
if err := path.Scan(data); err != nil {
return err
}
l.path = path
return nil
}
func (l *TemporalPath) Value() (driver.Value, error) {
return l.path.ToWKT(), nil
}
type Envelope struct {
geometry *geo.PointSet
}
func (l *Envelope) Coordinates() [][]float64 {
if l.geometry == nil {
return make([][]float64, 0)
}
c := make([][]float64, l.geometry.Length())
for i := 0; i < l.geometry.Length(); i += 1 {
p := l.geometry.GetAt(i)
c[i] = []float64{p.Lng(), p.Lat()}
}
return c
}
func (l *Envelope) Scan(data interface{}) error {
geometry := &geo.PointSet{}
if err := geometry.Scan(data); err != nil {
p := &geo.Point{}
if err := p.Scan(data); err != nil {
return err
}
geometry.Push(p)
}
l.geometry = geometry
return nil
}
func (l *Envelope) Value() (driver.Value, error) {
return l.geometry.ToWKT(), nil
}