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# Colours - library for managing the colours on RGB LEDs
# Copyright 2025 Elena Grandi
# This is the (Circuit|Micro)Python version of the library.
# Colours is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation, either version 3 of
# the License, or (at your option) any later version.
#
# Colours is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with Colours. If not, see <http://www.gnu.org/licenses/>.
def hsv2rgb(h, s, v):
h = h % 360
if s == 0:
return (v, v, v)
f = 256*(h%60)//60
p = v*(256-s)//256
q = v*(256-f*s//256)//256
t = v*(256-s*(256-f)//256)//256
hue_zone = (h//60) % 6
if hue_zone == 0:
return (v, t, p)
elif hue_zone == 1:
return (q, v, p)
elif hue_zone == 2:
return (p, v, t)
elif hue_zone == 3:
return (p, q, v)
elif hue_zone == 4:
return (t, p, v)
elif hue_zone == 5:
return (v, p, q)
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