freesewing/packages/plugin-grainline/src/index.js

import markers from "./markers";
import { version, name } from "../package.json";

export default {
  name: name,
  version: version,
  hooks: {
    preRender: function(svg) {
      if(svg.attributes.get('freesewing:plugin-grainline') === false) {
        svg.attributes.set('freesewing:plugin-grainline', version);
        svg.defs += markers;
      }
    }
  },
  macros: {
    grainline: function(so) {
      let points = this.points;
      points.grainlineFrom = so.from.shiftFractionTowards(so.to, 0.05);
      points.grainlineTo = so.to.shiftFractionTowards(so.from, 0.05);
      this.paths.grainline = new this.Path()
        .move(points.grainlineFrom)
        .line(points.grainlineTo)
        .attr("class", "note")
        .attr("marker-start", "url(#grainlineFrom)")
        .attr("marker-end", "url(#grainlineTo)")
        .attr("data-text", "grainline")
        .attr("data-text-class", "center fill-note");
    }
  }
};