Yin and yang: Difference between revisions

=={{header|Rust}}==

Creates a [http://gist.githubusercontent.com/vvshard/b11ee56adbb21967e43fb606cba19e56/raw/yin_yang.svg '''yin_yang.svg file''']. Rust version 1.58.0 or higher required

'''[dependencies]'''

svg = "0.10.0"

<lang fsharp>use svg::node::element::Path;

fn main() {

let doc = svg::Document::new()

.add(yin_yang(15.0, 1.0).set("transform", "translate(20,20)"))

.add(yin_yang(6.0, 1.0).set("transform", "translate(50,11)"));

svg::save("yin_yang.svg", &doc).unwrap();

}

/// th - the thickness of the outline around yang

fn yin_yang(r: f32, th: f32) -> Path {

let (cr, cw, ccw) = (",0,1,1,.1,0z", ",0,0,1,0,", ",0,0,0,0,");

let d = format!("M0,{0} a{0},{0}{cr} M0,{1} ", r + th, -r / 3.0) // main_circle

+ &format!("a{0},{0}{cr} m0,{r} a{0},{0}{cr} M0,0 ", r / 6.0) // eyes

+ &format!("A{0},{0}{ccw}{r} A{r},{r}{cw}-{r} A{0},{0}{cw}0", r / 2.0); // yang

Path::new().set("d", d).set("fill-rule", "evenodd")

}</lang>