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package ride
import (
"github.com/jftuga/geodist"
"github.com/martinlehoux/kagamigo/kcore"
"github.com/tkrajina/gpxgo/gpx"
)
type Ride struct {
points []Point
}
func (r *Ride) check() {
kcore.Assert(len(r.points) > 0, "no points in ride")
}
func FromGPX(content *gpx.GPX) Ride {
segment := content.Tracks[0].Segments[0]
points := make([]Point, len(segment.Points))
distance := 0.0
for i, p := range segment.Points {
if i != 0 {
distance += p.Distance2D(&segment.Points[i-1])
}
kcore.Assert(i == 0 || distance > 0, "zero distance")
kcore.Assert(p.Elevation.NotNull(), "points without elevation")
points[i] = Point{DistanceM: distance, ElevationM: p.Elevation.Value(), Coord: geodist.Coord{Lat: p.Latitude, Lon: p.Longitude}, Timestamp: p.Timestamp}
}
ride := Ride{points}
ride.check()
return ride
}
func FromPoints(points []Point) Ride {
ride := Ride{points}
ride.check()
return ride
}
func (r *Ride) ScoreFromKm(start, end float64) float64 {
i := 0
j := 0
for k, p := range r.points {
if i == 0 && p.DistanceM >= start*1000 {
i = k
}
if j == 0 && p.DistanceM >= end*1000 {
j = k
break
}
}
return Score(r.points, i, j)
}
func (r *Ride) ClimbFromDist(startDist, endDist float64) Climb {
start, end := 0, 0
for i, p := range r.points {
if start == 0 && p.DistanceM >= startDist {
start = i
}
if end == 0 && p.DistanceM >= endDist {
end = i
break
}
}
return Climb{start: start, end: end, points: r.points[start : end+1]}
}
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