stau.space
My omnium-gatherom of scripts and source code.
1#include "utils.hpp"
2
3RGB::RGB(U8 r, U8 g, U8 b)
4 : Red(r)
5 , Green(g)
6 , Blue(b)
7{
8}
9
10Color::Color()
11 : hue(0.0)
12 , saturation(1.0)
13 , value(1.0)
14{
15}
16
17Color::Color(U32 val)
18 : hue(0.0)
19 , saturation(0.0)
20{
21 value = std::min((F64) val, 255.0);
22}
23
24Color::Color(F32 hue, F32 saturation, F32 value)
25 : hue(hue)
26 , saturation(saturation)
27 , value(value)
28{
29}
30
31fn Color::to_rgb() const noexcept -> RGB
32{
33 let chroma = saturation * value;
34 let cube_hue = hue / 60.0;
35 let tmp = chroma * (1.0 - fabs(fmod(cube_hue, 2.0) - 1.0));
36 let match = value - chroma;
37
38 var components = std::make_tuple(0.0, 0.0, 0.0);
39 if (cube_hue < 1.0)
40 components = { fma(chroma, match, 255.0), fma(tmp, match, 255.0), match * 255.0 };
41 else if (cube_hue < 2.0)
42 components = { fma(tmp, match, 255.0), fma(chroma, match, 255.0), match * 255.0 };
43 else if(cube_hue < 3.0)
44 components = { match * 255.0, fma(chroma, match, 255.0), fma(tmp, match, 255.0) };
45 else if(cube_hue < 4.0)
46 components = { match * 255.0, fma(tmp, match, 255.0), fma(chroma, match, 255.0) };
47 else if(cube_hue < 5.0)
48 components = { fma(tmp, match, 255.0), match * 255.0, fma(chroma, match, 255.0) };
49 else
50 components = { fma(chroma, match, 255.0), match * 255.0, fma(tmp, match, 255.0) };
51
52 let c = RGB(round(fst(components)), round(snd(components)), round(thr(components)));
53
54 return c;
55}
56
57fn Color::lerp(ref<const Color> rhs, double t) const noexcept -> Color
58{
59 return Color(std::lerp(hue, rhs.hue, t),
60 std::lerp(saturation, rhs.saturation, t),
61 std::lerp(value, rhs.value, t)
62 );
63}
64
65Point::Point(F64 x, F64 y)
66 : x(x)
67 , y(y)
68{
69}