94 lines
3.3 KiB
C
94 lines
3.3 KiB
C
/*
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* HSLuv-C: Human-friendly HSL
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* <https://github.com/hsluv/hsluv-c>
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* <https://www.hsluv.org/>
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*
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* Copyright (c) 2015 Alexei Boronine (original idea, JavaScript implementation)
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* Copyright (c) 2015 Roger Tallada (Obj-C implementation)
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* Copyright (c) 2017 Martin Mitas (C implementation, based on Obj-C implementation)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifndef HSLUV_H
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#define HSLUV_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Convert HSLuv to RGB.
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*
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* @param h Hue. Between 0.0 and 360.0.
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* @param s Saturation. Between 0.0 and 100.0.
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* @param l Lightness. Between 0.0 and 100.0.
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* @param[out] pr Red component. Between 0.0 and 1.0.
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* @param[out] pg Green component. Between 0.0 and 1.0.
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* @param[out] pb Blue component. Between 0.0 and 1.0.
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*/
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void hsluv2rgb(double h, double s, double l, double* pr, double* pg, double* pb);
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/**
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* Convert RGB to HSLuv.
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*
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* @param r Red component. Between 0.0 and 1.0.
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* @param g Green component. Between 0.0 and 1.0.
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* @param b Blue component. Between 0.0 and 1.0.
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* @param[out] ph Hue. Between 0.0 and 360.0.
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* @param[out] ps Saturation. Between 0.0 and 100.0.
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* @param[out] pl Lightness. Between 0.0 and 100.0.
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*/
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void rgb2hsluv(double r, double g, double b, double* ph, double* ps, double* pl);
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/**
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* Convert HPLuv to RGB.
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*
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* @param h Hue. Between 0.0 and 360.0.
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* @param s Saturation. Between 0.0 and 100.0.
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* @param l Lightness. Between 0.0 and 100.0.
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* @param[out] pr Red component. Between 0.0 and 1.0.
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* @param[out] pg Green component. Between 0.0 and 1.0.
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* @param[out] pb Blue component. Between 0.0 and 1.0.
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*/
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void hpluv2rgb(double h, double s, double l, double* pr, double* pg, double* pb);
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/**
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* Convert RGB to HPLuv.
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*
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* @param r Red component. Between 0.0 and 1.0.
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* @param g Green component. Between 0.0 and 1.0.
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* @param b Blue component. Between 0.0 and 1.0.
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* @param[out] ph Hue. Between 0.0 and 360.0.
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* @param[out] ps Saturation. Between 0.0 and 100.0.
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* @param[out] pl Lightness. Between 0.0 and 100.0.
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*
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* Note that HPLuv does not contain all the colors of RGB, so converting
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* arbitrary RGB to it may generate invalid HPLuv colors.
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*/
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void rgb2hpluv(double r, double g, double b, double* ph, double* ps, double* pl);
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#ifdef __cplusplus
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}
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#endif
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#endif /* HSLUV_H */
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