text: import Color, {util} from "./../color.js";
  import "./oklab.js";
  import * as angles from "../angles.js";
  
  Color.defineSpace({
  	id: "oklch",
  	name: "OKLCh",
  	coords: {
  		lightness: [0, 1],
  		chroma: [0, 1],
  		hue: angles.range,
  	},
  	inGamut: coords => true,
  	white: Color.whites.D65,
  	from: {
  		oklab (oklab) {
  			// Convert to polar form
  			let [L, a, b] = oklab;
  			let h;
  			const ε = 0.0002; // chromatic components much smaller than a,b
  
  			if (Math.abs(a) < ε && Math.abs(b) < ε) {
  				h = NaN;
  			}
  			else {
  				h = Math.atan2(b, a) * 180 / Math.PI;
  			}
  
  			return [
  				L, // OKLab L is still L
  				Math.sqrt(a ** 2 + b ** 2), // Chroma
  				angles.constrain(h) // Hue, in degrees [0 to 360)
  			];
  		}
  	},
  	to: {
  		// Convert from polar form
  		oklab (oklch) {
  			let [L, C, h] = oklch;
  			let a, b;
  
  			// check for NaN hue
  			if (isNaN(h)) {
  				a = 0;
  				b = 0;
  			}
  			else {
  				a = C * Math.cos(h * Math.PI / 180);
  				b = C * Math.sin(h * Math.PI / 180);
  			}
  
  			return [ L, a, b ];
  		}
  	},
  	parse (str, parsed = Color.parseFunction(str)) {
  		if (parsed && parsed.name === "oklch") {
  			let L = parsed.args[0];
  
  			return {
  				spaceId: "oklch",
  				coords: parsed.args.slice(0, 3),
  				alpha: parsed.args.slice(3)[0]
  			};
  		}
  	},
  
  });
  
  export default Color;
  export {angles};
  