docs: public static SVGPath drawVoronoi(Projection2D proj, List<SweepHullDelaunay2D.Triangle> delaunay, List<double[]> means) {
      final SVGPath path = new SVGPath();
      CanvasSize viewport = proj.estimateViewport();
      for(int i = 0; i < delaunay.size(); i++) {
        SweepHullDelaunay2D.Triangle del = delaunay.get(i);
        final double[] projcx = proj.fastProjectDataToRenderSpace(del.m);
        if(del.ab > i) {
          Triangle oth = delaunay.get(del.ab);
          double[] p1 = projcx.clone(), p2 = proj.fastProjectDataToRenderSpace(oth.m);
          if (viewport.clipToMargin(p1, p2)) {
            path.moveTo(p1);
            path.drawTo(p2);
          }
        }
        else if(del.ab < 0) {
          double[] dirv = VMath.minus(means.get(del.a), means.get(del.b));
          VMath.rotate90Equals(dirv);
          double[] dir = proj.fastProjectRelativeDataToRenderSpace(dirv);
          final double factor = viewport.continueToMargin(projcx, dir);
          if(factor > 0) {
            path.moveTo(projcx);
            path.relativeLineTo(factor * dir[0], factor * dir[1]);
          }
        }
  
        if(del.bc > i) {
          Triangle oth = delaunay.get(del.bc);
          double[] p1 = projcx.clone(), p2 = proj.fastProjectDataToRenderSpace(oth.m);
          if (viewport.clipToMargin(p1, p2)) {
            path.moveTo(p1);
            path.drawTo(p2);
          }
        }
        else if(del.bc < 0) {
          double[] dirv = VMath.minus(means.get(del.b), means.get(del.c));
          VMath.rotate90Equals(dirv);
          double[] dir = proj.fastProjectRelativeDataToRenderSpace(dirv);
          final double factor = viewport.continueToMargin(projcx, dir);
          if(factor > 0) {
            path.moveTo(projcx);
            path.relativeLineTo(factor * dir[0], factor * dir[1]);
          }
        }
  
        if(del.ca > i) {
          Triangle oth = delaunay.get(del.ca);
          // No need to clone projcx here.
          double[] projca = proj.fastProjectDataToRenderSpace(oth.m);
          if (viewport.clipToMargin(projcx, projca)) {
            path.moveTo(projcx);
            path.drawTo(projca);
          }
        }
        else if(del.ca < 0) {
          double[] dirv = VMath.minus(means.get(del.c), means.get(del.a));
          VMath.rotate90Equals(dirv);
          double[] dir = proj.fastProjectRelativeDataToRenderSpace(dirv);
          final double factor = viewport.continueToMargin(projcx, dir);
          if(factor > 0) {
            path.moveTo(projcx);
            path.relativeLineTo(factor * dir[0], factor * dir[1]);
          }
        }
      }
      return path;
    }