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main.go: broken WIP for HSV

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Codeberg 2019-05-28 12:06:57 +02:00 committed by Holger Waechtler
parent 0acd3d10ec
commit 5ac5f5101f
1 changed files with 46 additions and 15 deletions
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61
main.go
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@ -72,18 +72,49 @@ func LinearCongruentialGenerator(seed uint64) *LCG {
return g
}
type COLOR struct {
type RGB struct {
r uint8
g uint8
b uint8
}
func Color(s string) *COLOR {
c := new(COLOR)
type HSV struct {
h float32
s float32
v float32
}
func rgb(r, g, b float32) *RGB {
c := new(RGB)
c.r = uint8(r * 1.0 / 255)
c.g = uint8(g * 1.0 / 255)
c.b = uint8(b * 1.0 / 255)
return c
}
func s2rgb(s string) *RGB {
c := new(RGB)
fmt.Sscanf(s, "#%02x%02x%02x", c.r, c.g, c.b)
return c
}
func (c *HSV) to_rgb() *RGB {
h := int(floor(c.h / 60))
f := c.h / 60 - h
p := c.v * (1 - c.s)
q := c.v * (1 - c.s * f)
t := c.v * (1 - c.s * (1 - f))
switch (h) {
case 6:
case 0: return rgb(C.V, t, p)
case 1: return rgb(q, C.V, p)
case 2: return rgb(p, C.V, t)
case 3: return rgb(p, q, C.V)
case 4: return rgb(t, p, C.V)
case 5: return rgb(C.V, p, q)
}
}
func add255(x uint8, y uint8) uint8 {
if x < 255-y {
return x + y
@ -98,7 +129,7 @@ func sub255(x uint8, y uint8) uint8 {
return 0
}
func (c *COLOR) brighterOrDarkerThan(ref COLOR, delta uint8) string {
func (c *RGB) brighterOrDarkerThan(ref RGB, delta uint8) string {
/* XXX FIXME: THIS IS PROBABLY NOT CORRECT. Need to look into original implementation. */
if true {
return fmt.Sprintf("#%02x%02x%02x", add255(c.r, delta), add255(c.g, delta), add255(c.b, delta))
@ -106,26 +137,26 @@ func (c *COLOR) brighterOrDarkerThan(ref COLOR, delta uint8) string {
return ref.darkerThan(ref, delta)
}
func (c *COLOR) darkerThan(ref COLOR, delta uint8) string {
func (c *RGB) darkerThan(ref RGB, delta uint8) string {
/* XXX FIXME: THIS IS NOT CORRECT. The original implementation does darkening in HSV space.
* cf. https://github.com/DiceBear/avatars/blob/master/packages/avatars/src/color.ts
*/
return fmt.Sprintf("#%02x%02x%02x", sub255(c.r, delta), sub255(c.g, delta), sub255(c.b, delta))
}
func (c COLOR) withAlpha(alpha float32) string {
func (c RGB) withAlpha(alpha float32) string {
return fmt.Sprintf("#%02x%02x%02x", c.r, c.g, c.b, uint8(255*alpha))
}
func maleAvatar(seed uint64) string {
var g = LinearCongruentialGenerator(seed)
var skinColor = g.pickOne([]string{"#FFDBAC", "#F5CFA0", "#EAC393", "#E0B687", "#CB9E6E", "#B68655", "#A26D3D", "#8D5524"})
var hairColor = Color(g.pickOne([]string{"#090806", "#2c222b", "#71635a", "#b7a69e", "#b89778", "#a56b46", "#b55239", "#8d4a43",
"#91553d", "#533d32", "#3b3024", "#554838", "#4e433f", "#504444", "#6a4e42", "#a7856a", "#977961"})).brighterOrDarkerThan(*Color(skinColor), 17)
var hairColor = rgb(g.pickOne([]string{"#090806", "#2c222b", "#71635a", "#b7a69e", "#b89778", "#a56b46", "#b55239", "#8d4a43",
"#91553d", "#533d32", "#3b3024", "#554838", "#4e433f", "#504444", "#6a4e42", "#a7856a", "#977961"})).brighterOrDarkerThan(*rgb(skinColor), 17)
var eyesColor = g.pickOne([]string{"#76778b", "#697b94", "#647b90", "#5b7c8b", "#588387"})
var eyebrowsColor = Color(Color(hairColor).darkerThan(*Color(skinColor), 7)).darkerThan(*Color(hairColor), 10)
var mustacheColor = Color(Color(hairColor).darkerThan(*Color(skinColor), 7)).withAlpha(g.pickOneFloat([]float32{1, 0.75, 0.5}))
var mouthColor = Color(g.pickOne([]string{"#eec1ad", "#dbac98", "#d29985"})).brighterOrDarkerThan(*Color(skinColor), 10)
var eyebrowsColor = rgb(rgb(hairColor).darkerThan(*rgb(skinColor), 7)).darkerThan(*rgb(hairColor), 10)
var mustacheColor = rgb(rgb(hairColor).darkerThan(*rgb(skinColor), 7)).withAlpha(g.pickOneFloat([]float32{1, 0.75, 0.5}))
var mouthColor = rgb(g.pickOne([]string{"#eec1ad", "#dbac98", "#d29985"})).brighterOrDarkerThan(*rgb(skinColor), 10)
var glassesColor = g.pickOne([]string{"#5f705c", "#43677d", "#5e172d", "#ffb67a", "#a04b5d", "#191919", "#323232", "#4b4b4b"})
var clothesColor = g.pickOne([]string{"#5bc0de", "#5cb85c", "#428bca", "#03396c", "#005b96", "#6497b1", "#1b85b8", "#5a5255", "#559e83", "#ae5a41", "#c3cb71", "#666547", "#ffe28a"})
var hatColor = g.pickOne([]string{"#18293b", "#2e1e05", "#989789", "#3d6ba7", "#517459", "#a62116"})
@ -281,13 +312,13 @@ func femaleAvatar(seed uint64) string {
var g = LinearCongruentialGenerator(seed)
var skinColor = g.pickOne([]string{"#FFDBAC", "#F5CFA0", "#EAC393", "#E0B687", "#CB9E6E", "#B68655", "#A26D3D", "#8D5524"})
var hairColor = Color(g.pickOne([]string{"#090806", "#2c222b", "#71635a", "#b7a69e", "#d6c4c2", "#cabfb1", "#dcd0ba", "#fff5e1",
var hairColor = rgb(g.pickOne([]string{"#090806", "#2c222b", "#71635a", "#b7a69e", "#d6c4c2", "#cabfb1", "#dcd0ba", "#fff5e1",
"#e6cea8", "#e5c8a8", "#debc99", "#b89778", "#a56b46", "#b55239", "#8d4a43", "#91553d",
"#533d32", "#3b3024", "#554838", "#4e433f", "#504444", "#6a4e42", "#a7856a", "#977961"})).brighterOrDarkerThan(*Color(skinColor), 17)
"#533d32", "#3b3024", "#554838", "#4e433f", "#504444", "#6a4e42", "#a7856a", "#977961"})).brighterOrDarkerThan(*rgb(skinColor), 17)
var eyesColor = g.pickOne([]string{"#76778b", "#697b94", "#647b90", "#5b7c8b", "#588387"})
var eyebrowsColor = Color(Color(hairColor).darkerThan(*Color(skinColor), 7)).darkerThan(*Color(hairColor), 10)
var eyebrowsColor = rgb(rgb(hairColor).darkerThan(*rgb(skinColor), 7)).darkerThan(*rgb(hairColor), 10)
var accessoriesColor = g.pickOne([]string{"#daa520", "#ffd700", "#eee8aa", "#fafad2", "#d3d3d3", "#a9a9a9"})
var mouthColor = Color(g.pickOne([]string{"#dbac98", "#d29985", "#c98276", "#e35d6a", "#e32153", "#de0f0d"})).brighterOrDarkerThan(*Color(skinColor), 10)
var mouthColor = rgb(g.pickOne([]string{"#dbac98", "#d29985", "#c98276", "#e35d6a", "#e32153", "#de0f0d"})).brighterOrDarkerThan(*rgb(skinColor), 10)
var glassesColor = g.pickOne([]string{"#5f705c", "#43677d", "#5e172d", "#ffb67a", "#a04b5d", "#191919", "#323232", "#4b4b4b"})
var clothesColor = g.pickOne([]string{"#d11141", "#00b159", "#00aedb", "#f37735", "#ffc425", "#740001", "#ae0001", "#eeba30",
"#96ceb4", "#ffeead", "#ff6f69", "#ffcc5c", "#88d8b0"})