label.js

import { centroid } from "../helpers/centroid.js";
import { figuration } from "../helpers/figuration.js";

export function label(selection, projection, planar, options = {}, clipid) {
  let geojson = options.geojson;
  let values = options.values;
  let fill = options.fill ? options.fill : "#474342";
  let fontSize = options.fontSize ? options.fontSize : 10;
  let fontFamily = options.fontFamily ? options.fontFamily : "Roboto";
  let textDecoration = options.textDecoration ? options.textDecoration : "none";
  let fontWeight = options.fontWeight ? options.fontWeight : "normal";
  let fontStyle = options.fontStyle ? options.fontStyle : "normal";
  let opacity = options.opacity != undefined ? options.opacity : 1;
  let halo = options.halo == true ? true : false;
  let halo_style = options.halo_style ? options.halo_style : ["white", 4, 0.5];

  //const features = centroid(geojson, { planar: planar }).features;

  let features;
  if (figuration(geojson) == "p") {
    features = geojson.features;
  } else {
    features = centroid(geojson, { planar: planar }).features;
  }

  selection
    .append("g")
    .attr("class", options.id)
    .attr("data-layer", JSON.stringify({ _type: "label" }))
    .attr("data-layer", undefined)
    .selectAll("text")
    .data(
      features
        .filter((d) => d.geometry.coordinates != undefined)
        .filter((d) => d.properties[values] != undefined)
    )
    .join("text")
    .attr("class", "onglobe_coords")
    .attr("x", (d) => projection(d.geometry.coordinates)[0])
    .attr("y", (d) => projection(d.geometry.coordinates)[1])
    .attr("fill", fill)
    .attr("opacity", opacity)
    .attr("font-size", fontSize)
    .attr("font-family", fontFamily)
    .attr("font-style", fontStyle)
    .attr("text-decoration", textDecoration)
    .attr("font-weight", fontWeight)
    .attr("text-anchor", "middle")
    .attr("dominant-baseline", "middle")
    .attr("paint-order", "stroke")
    .attr("stroke", halo ? halo_style[0] : "none")
    .attr("stroke-width", halo ? halo_style[1] : 0)
    .attr("stroke-opacity", halo ? halo_style[2] : 0)
    .attr("stroke-linejoin", "round")
    .attr("stroke-linecap", "round")
    .text((d) => d.properties[values]);
}