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Multiple fixes: signed/unsigned, etc... (#600)

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Co-authored-by: ArthurSonzogni <sonzogniarthur@gmail.com>
This commit is contained in:
Marc
2023-03-26 20:20:02 +02:00
committed by GitHub
parent e177409bd3
commit eed7e2ea70
48 changed files with 215 additions and 144 deletions
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23
src/ftxui/screen/color.cpp
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@@ -212,21 +212,22 @@ Color Color::Interpolate(float t, const Color& a, const Color& b) {
}
};
uint8_t red_a = 0;
uint8_t green_a = 0;
uint8_t blue_a = 0;
uint8_t red_b = 0;
uint8_t green_b = 0;
uint8_t blue_b = 0;
get_color(a, &red_a, &green_a, &blue_a);
get_color(b, &red_b, &green_b, &blue_b);
uint8_t a_r = 0;
uint8_t a_g = 0;
uint8_t a_b = 0;
uint8_t b_r = 0;
uint8_t b_g = 0;
uint8_t b_b = 0;
get_color(a, &a_r, &a_g, &a_b);
get_color(b, &b_r, &b_g, &b_b);
// Gamma correction:
// https://en.wikipedia.org/wiki/Gamma_correction
constexpr float gamma = 2.2f;
return Color::RGB(
pow(pow(red_a, 2.2f) * (1 - t) + pow(red_b, 2.2f) * t, 1 / 2.2f),
pow(pow(green_a, 2.2f) * (1 - t) + pow(green_b, 2.2f) * t, 1 / 2.2f),
pow(pow(blue_a, 2.2f) * (1 - t) + pow(blue_b, 2.2f) * t, 1 / 2.2f));
uint8_t(pow(pow(a_r, gamma) * (1 - t) + pow(b_r, gamma) * t, 1 / gamma)),
uint8_t(pow(pow(a_g, gamma) * (1 - t) + pow(b_g, gamma) * t, 1 / gamma)),
uint8_t(pow(pow(a_b, gamma) * (1 - t) + pow(b_b, gamma) * t, 1 / gamma)));
}
inline namespace literals {