easy_color 0.1.3

A very simple and easy-to-use color conversion tool
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168

#[derive(Debug, Clone)]
pub enum ColorError {
    FormatErr(String),
    ValueErr(String),
}

pub fn calc_rgb_with_alpha(v: u8, alpha: f32) -> f32 {
    v as f32 * alpha + 255.0 * (1.0 - alpha)
}

pub fn rgb_to_hsl(r: u8, g: u8, b: u8) -> (u32, u32, u32) {
    calc_rgb_to_hsl(r as f32 / 255.0, g as f32 / 255.0, b as f32 / 255.0)
}
pub fn rgba_to_hsla(r: u8, g: u8, b: u8, a: f32) -> (u32, u32, u32, f32) {
    let (h, s, l) = rgb_to_hsl(r, g, b);
    (h, s, l, a)
}

pub fn calc_rgb_to_hsl(r: f32, g: f32, b: f32) -> (u32, u32, u32) {
    let c_max = r.max(g).max(b);
    let c_min = r.min(g).min(b);
    let delta = c_max - c_min;
    let mut h = if delta == 0.0 {
        0.0
    } else if c_max == r {
        60.0 * ((g - b) / delta % 6.0)
    } else if c_max == g {
        60.0 * ((b - r) / delta + 2.0)
    } else {
        60.0 * ((r - g) / delta + 4.0)
    };
    if h < 0.0 {
        h += 360.0;
    }
    let l = (c_max + c_min) / 2.0;
    let s = if delta == 0.0 {
        0.0
    } else {
        delta / (1.0 - (2.0 * l - 1.0).abs())
    };
    (
        h.round() as u32,
        (s * 100.0).round() as u32,
        (l * 100.0).round() as u32,
    )
}

pub fn hsl_to_rgb(h: u32, s: u32, l: u32) -> (u8, u8, u8) {
    let s = s as f32 / 100.0;
    let l = l as f32 / 100.0;
    let c = (1.0 - (l * 2.0 - 1.0).abs()) * s;
    let x = c * (1.0 - ((h as f32 / 60.0) % 2.0 - 1.0).abs());
    let m = l - c / 2.0;
    let (mut r, mut g, mut b) = match h {
        n if n < 60 => (c, x, 0.0),
        n if 60 <= n && n < 120 => (x, c, 0.0),
        n if 120 <= n && n < 180 => (0.0, c, x),
        n if 180 <= n && n < 240 => (0.0, x, c),
        n if 240 <= n && n < 300 => (x, 0.0, c),
        n if 300 <= n && n < 360 => (c, 0.0, x),
        _ => (0.0, 0.0, 0.0),
    };
    r = (r + m) * 255.0;
    g = (g + m) * 255.0;
    b = (b + m) * 255.0;
    (r.round() as u8, g as u8, b.round() as u8)
}

pub fn rgb_to_hsv(r: u8, g: u8, b: u8) -> (u32, u32, u32) {
    let r = r as f32 / 255.0;
    let g = g as f32 / 255.0;
    let b = b as f32 / 255.0;

    let c_max = r.max(g).max(b);
    let c_min = r.min(g).min(b);
    let delta = c_max - c_min;

    let mut h = if delta == 0.0 {
        0.0
    } else if c_max == r {
        60.0 * (((g - b) / delta) % 6.0)
    } else if c_max == g {
        60.0 * (((b - r) / delta) + 2.0)
    } else {
        60.0 * (((r - g) / delta) + 4.0)
    };

    if h < 0.0 {
        h += 360.0;
    }

    let s = if c_max == 0.0 { 0.0 } else { delta / c_max };

    let v = c_max;
    (
        h.round() as u32,
        (s * 100.0).round() as u32,
        (v * 100.0).round() as u32,
    )
}

pub fn hsv_to_rgb(h: u32, s: u32, v: u32) -> (u8, u8, u8) {
    let s = s as f32 / 100.0;
    let v = v as f32 / 100.0;
    let c = v * s;
    let x = c * (1.0 - ((h as f32 / 60.0) % 2.0 - 1.0).abs());
    let m = v - c;
    let (mut r, mut g, mut b) = match h {
        n if n < 60 => (c, x, 0.0),
        n if 60 <= n && n < 120 => (x, c, 0.0),
        n if 120 <= n && n < 180 => (0.0, c, x),
        n if 180 <= n && n < 240 => (0.0, x, c),
        n if 240 <= n && n < 300 => (x, 0.0, c),
        n if 300 <= n && n < 360 => (c, 0.0, x),
        _ => (0.0, 0.0, 0.0),
    };
    r = (r + m) * 255.0;
    g = (g + m) * 255.0;
    b = (b + m) * 255.0;
    (r as u8, g as u8, b.round() as u8)
}

pub fn rgb_to_cmyk(r: u8, g: u8, b: u8) -> (u8, u8, u8, u8) {
    let r = r as f32 / 255.0;
    let g = g as f32 / 255.0;
    let b = b as f32 / 255.0;

    let k = 1.0 - r.max(g).max(b);
    let (c, m, y) = if k == 1.0 {
        (0.0, 0.0, 0.0)
    } else {
        (
            (1.0 - r - k) / (1.0 - k),
            (1.0 - g - k) / (1.0 - k),
            (1.0 - b - k) / (1.0 - k),
        )
    };
    (
        (c * 100.0).round() as u8,
        (m * 100.0).round() as u8,
        (y * 100.0).round() as u8,
        (k * 100.0).round() as u8,
    )
}

pub fn cmyk_to_rgb(c: u8, m: u8, y: u8, k: u8) -> (u8, u8, u8) {
    let c = c as f32 / 100.0;
    let m = m as f32 / 100.0;
    let y = y as f32 / 100.0;
    let k = k as f32 / 100.0;
    let t = 1.0 - k;
    let r = ((1.0 - c) * t * 255.0).round() as u8;
    let g = ((1.0 - m) * t * 255.0).round() as u8;
    let b = ((1.0 - y) * t * 255.0).round() as u8;
    (r, g, b)
}

pub fn process_hex(hex_str: &str, chunk_size: usize) -> Vec<u8> {
    hex_str
        .chars()
        .collect::<Vec<_>>()
        .chunks(chunk_size)
        .map(|c| c.iter().collect::<String>())
        .map(|v| u8::from_str_radix(&v.repeat(2)[0..2], 16))
        .filter(|v| v.is_ok())
        .map(|v| v.unwrap())
        .collect::<Vec<_>>()
}