multiplication-table/vendor/github.com/lucasb-eyer/go-colorful/warm_palettegen.go

26 lines
757 B
Go

package colorful
import (
"math/rand"
)
// Uses the HSV color space to generate colors with similar S,V but distributed
// evenly along their Hue. This is fast but not always pretty.
// If you've got time to spare, use Lab (the non-fast below).
func FastWarmPalette(colorsCount int) (colors []Color) {
colors = make([]Color, colorsCount)
for i := 0; i < colorsCount; i++ {
colors[i] = Hsv(float64(i)*(360.0/float64(colorsCount)), 0.55+rand.Float64()*0.2, 0.35+rand.Float64()*0.2)
}
return
}
func WarmPalette(colorsCount int) ([]Color, error) {
warmy := func(l, a, b float64) bool {
_, c, _ := LabToHcl(l, a, b)
return 0.1 <= c && c <= 0.4 && 0.2 <= l && l <= 0.5
}
return SoftPaletteEx(colorsCount, SoftPaletteSettings{warmy, 50, true})
}