1// Various ways to generate single random colors
2
3package colorful
4
5import (
6	"math/rand"
7)
8
9// Creates a random dark, "warm" color through a restricted HSV space.
10func FastWarmColor() Color {
11	return Hsv(
12		rand.Float64()*360.0,
13		0.5+rand.Float64()*0.3,
14		0.3+rand.Float64()*0.3)
15}
16
17// Creates a random dark, "warm" color through restricted HCL space.
18// This is slower than FastWarmColor but will likely give you colors which have
19// the same "warmness" if you run it many times.
20func WarmColor() (c Color) {
21	for c = randomWarm(); !c.IsValid(); c = randomWarm() {
22	}
23	return
24}
25
26func randomWarm() Color {
27	return Hcl(
28		rand.Float64()*360.0,
29		0.1+rand.Float64()*0.3,
30		0.2+rand.Float64()*0.3)
31}
32
33// Creates a random bright, "pimpy" color through a restricted HSV space.
34func FastHappyColor() Color {
35	return Hsv(
36		rand.Float64()*360.0,
37		0.7+rand.Float64()*0.3,
38		0.6+rand.Float64()*0.3)
39}
40
41// Creates a random bright, "pimpy" color through restricted HCL space.
42// This is slower than FastHappyColor but will likely give you colors which
43// have the same "brightness" if you run it many times.
44func HappyColor() (c Color) {
45	for c = randomPimp(); !c.IsValid(); c = randomPimp() {
46	}
47	return
48}
49
50func randomPimp() Color {
51	return Hcl(
52		rand.Float64()*360.0,
53		0.5+rand.Float64()*0.3,
54		0.5+rand.Float64()*0.3)
55}
56