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use super::Color; #[inline] pub fn normalize_hue(hue: f64) -> f64 { let hue_rest = hue % 360.0; if hue_rest < 0.0 { 360.0 - hue_rest } else { hue_rest } } #[inline] pub fn percentage_to_fraction(v: f64) -> f64 { if v > 100. { 1. } else if v < 0. { 0. } else { v / 100. } } #[inline] pub fn color_from_short_rgb_u16(c: u16) -> Color { let (red, green, blue, _) = ( ((c >> 8) + ((c >> 8) << 4)) as u8, ((c & 0x0f0) + ((c & 0x0f0) >> 4)) as u8, ((c & 0x00f) + ((c & 0x00f) << 4)) as u8, 0xff, ); Color::RGB(red, green, blue) } #[inline] pub fn color_from_rgb_u32(c: u32) -> Color { let (red, green, blue, _) = ( (c >> 16) as u8, ((c & 0x00ff00) >> 8) as u8, (c & 0x0000ff) as u8, 0xff, ); Color::RGB(red, green, blue) } #[inline] pub fn color_from_short_rgba_u16(c: u16) -> Color { let (red, green, blue, alpha) = ( ((c >> 12) + ((c >> 12) << 4)) as u8, (((c & 0x0f00) >> 4) + ((c & 0x0f00) >> 8)) as u8, ((c & 0x00f0) + ((c & 0x00f0) >> 4)) as u8, ((c & 0x000f) + ((c & 0x000f) << 4)) as u8, ); Color::RGBA(red, green, blue, alpha) } #[inline] pub fn color_from_rgba_u32(c: u32) -> Color { let (red, green, blue, alpha) = ( (c >> 24) as u8, ((c & 0x00ff0000) >> 16) as u8, ((c & 0x0000ff00) >> 8) as u8, (c & 0x000000ff) as u8, ); Color::RGBA(red, green, blue, alpha) }