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|
package climb
import (
"fmt"
"math"
)
const (
ClimbDistanceMinimum = 500
ClimbSlopeMinimum = 0.035
detectionMinimumScore = 35
)
type Category int
const (
CategoryNo Category = iota
CategoryFour
CategoryThree
CategoryTwo
CategoryOne
CategoryHC
)
type categoryInfo struct {
label string
minScore float64
}
var categories = map[Category]categoryInfo{
CategoryNo: {label: "NO", minScore: math.Inf(-1)},
CategoryFour: {label: "Cat 4", minScore: 35},
CategoryThree: {label: "Cat 3", minScore: 80},
CategoryTwo: {label: "Cat 2", minScore: 180},
CategoryOne: {label: "Cat 1", minScore: 250},
CategoryHC: {label: "HC", minScore: 600},
}
func (c Category) String() string {
return categories[c].label
}
func CategoryOf(cotacol float64) Category {
best := CategoryNo
bestMin := math.Inf(-1)
found := false
for category, info := range categories {
if cotacol >= info.minScore && (!found || info.minScore > bestMin) {
best = category
bestMin = info.minScore
found = true
}
}
if !found {
// NaN reaches no floor; preserve the original switch default (HC).
return CategoryHC
}
return best
}
type Climb struct {
Route
}
func (climb Climb) String() string {
cotacol := climb.DifficultyScore()
return fmt.Sprintf("%.1fkm at %.1f%% (%d pts - %s)", climb.Distances[len(climb.Distances)-1]/1000, Slope(climb.Distances, climb.Elevations)*100, int(cotacol), CategoryOf(cotacol))
}
func (climb Climb) DifficultyScore() float64 {
return Cotacol(climb.Distances, climb.Elevations)
}
func (climb Climb) Top() (int, float64) {
top := 0
for i := 1; i < len(climb.Elevations); i++ {
if climb.Elevations[i] > climb.Elevations[top] {
top = i
}
}
return top, climb.Elevations[top]
}
func Slope(distances, elevations []float64) float64 {
end := len(distances) - 1
return (elevations[end] - elevations[0]) / (distances[end] - distances[0])
}
|
