teacat / noire Goto Github PK
View Code? Open in Web Editor NEW🎨 Light/darken, mix, (de)saturate the colors in Golang with CMYK / RGB / HSV / HSL / Hex / HTML supported.
Home Page: https://godoc.org/github.com/teacat/noire
License: MIT License
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Half of all hues are inaccessible
It seems hues between 61-200 are not able to be set:
nc := noire.NewHSV(20, 100, 100)
h, s, v := nc.HSV()
fmt.Printf("h=%f s=%f v=%f\n", h, s, v)
nc = noire.NewHSV(219, 65, 100)
h, s, v = nc.HSV()
fmt.Printf("h=%f s=%f v=%f\n", h, s, v)
nc = noire.NewHSV(299, 100, 100)
h, s, v = nc.HSV()
fmt.Printf("h=%f s=%f v=%f\n", h, s, v)output:
h=20.000000 s=100.000000 v=100.000000
h=339.000000 s=65.100000 v=100.000000
h=59.000000 s=100.000000 v=100.000000
when using a colors AdjustHuemethod like below, hues between 60 and 300 do not produce the expected result:
nc := noire.NewHSV(1, 100, 100)
for i := 1; i < 360; i++ {
h, s, v = nc.HSV()
fmt.Printf("h=%f s=%f v=%f\n", h, s, v)
nc = nc.AdjustHue(1.0)
}Issues when Saturation = 0
When creating an HSV color with saturation set to 0, the result is consistently a hue of 60, with saturation and value at 100.
Example gist: https://gist.github.com/bcicen/252002e09e55e0439bc400ca785b8bd5
Result:
input: h=320.00 s=100.00 v=100.00
color 255;0;170 h=320.00 s=100.00 v=100.00
input: h=320.00 s=70.00 v=100.00
color 255;77;196 h=320.00 s=69.80 v=100.00
input: h=320.00 s=30.00 v=100.00
color 255;179;230 h=320.00 s=29.80 v=100.00
input: h=320.00 s=10.00 v=100.00
color 255;230;247 h=319.00 s=9.80 v=100.00
input: h=320.00 s=5.00 v=100.00
color 255;242;251 h=318.00 s=5.10 v=100.00
input: h=320.00 s=0.00 v=100.00
color 255;255;0 h=60.00 s=100.00 v=100.00 # yellow
thx for this!
Hey thanks for this, it seems simple and to the point.
No offense, the comments/docs could be in English :D my zhong-guo zhong-wen (see?) is quite bad.. but the code is so clear that it's ok
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