HSVからRGBに色を変換

hsv2rgb.rs

struct RGB{
    r:u8,
    g:u8,
    b:u8
}

impl RGB{
    fn new()->Self{
        Self{
            r:0,
            g:0,
            b:0
        }
    }
    fn print(&self){
        println!("r:{} g:{} b:{}",self.r,self.g,self.b);
    }
    fn hsv2rgb(&mut self,h:f64,s:f64,v:f64){
        let mut r = v;
        let mut g = v;
        let mut b = v;

        let mut h=h;
        if s > 0.0 {
            h *= 6.0;
            let  i = h as u32;
            let f = h - (i as f64);
            match i{
                0=>{g *= 1.0 - s * (1.0 - f); b *= 1.0 - s;},
                1=>{r *= 1.0 - s * f; b *= 1.0 - s;},
                2=>{r *= 1.0 - s; b *= 1.0 - s * (1.0 - f);},
                3=>{r *= 1.0 - s;g *= 1.0 - s * f;},
                4=>{r *= 1.0 - s * (1.0 - f);g *= 1.0 - s;},
                5=>{g *= 1.0 - s;b *= 1.0 - s * f;},
                _=>{}
            }
        }
        self.r=(r*255.0) as u8;
        self.g=(g*255.0) as u8;
        self.b=(b*255.0) as u8;
    }
}
fn main(){
    let mut c = RGB::new();
    for x in 0..100{
        c.hsv2rgb((x as f64)/100.0,1.0,1.0);
        c.print();
    }
}