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import identity from "../identity.js";
import stream from "../stream.js";
import pathArea from "./area.js";
import pathBounds from "./bounds.js";
import pathCentroid from "./centroid.js";
import PathContext from "./context.js";
import pathMeasure from "./measure.js";
import PathString from "./string.js";
export default function(projection, context) {
let digits = 3,
pointRadius = 4.5,
projectionStream,
contextStream;
function path(object) {
if (object) {
if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments));
stream(object, projectionStream(contextStream));
}
return contextStream.result();
}
path.area = function(object) {
stream(object, projectionStream(pathArea));
return pathArea.result();
};
path.measure = function(object) {
stream(object, projectionStream(pathMeasure));
return pathMeasure.result();
};
path.bounds = function(object) {
stream(object, projectionStream(pathBounds));
return pathBounds.result();
};
path.centroid = function(object) {
stream(object, projectionStream(pathCentroid));
return pathCentroid.result();
};
path.projection = function(_) {
if (!arguments.length) return projection;
projectionStream = _ == null ? (projection = null, identity) : (projection = _).stream;
return path;
};
path.context = function(_) {
if (!arguments.length) return context;
contextStream = _ == null ? (context = null, new PathString(digits)) : new PathContext(context = _);
if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius);
return path;
};
path.pointRadius = function(_) {
if (!arguments.length) return pointRadius;
pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_);
return path;
};
path.digits = function(_) {
if (!arguments.length) return digits;
if (_ == null) digits = null;
else {
const d = Math.floor(_);
if (!(d >= 0)) throw new RangeError(`invalid digits: ${_}`);
digits = d;
}
if (context === null) contextStream = new PathString(digits);
return path;
};
return path.projection(projection).digits(digits).context(context);
}