问停止缩放D3世界地图中的气泡

EN

function clicked(d) {

   var conditionalChange = d;
   if(d.properties.hasOwnProperty("Country")){

       var country = d.properties.Country;
       var obj = data.objects.countries.geometries;
         $.each(obj, function(key, value ) {
            if(countries[key].properties.name == "Kenya")
                {
            conditionalChange = countries[key].geometry;
                        }
            });
   }
  d = conditionalChange;
  if (active.node() === this) return reset();
  active.classed("active", false);
  active = d3.select(this).classed("active", true);

  var bounds = path.bounds(d),
      dx = bounds[1][0] - bounds[0][0],
      dy = bounds[1][1] - bounds[0][1],
      x = (bounds[0][0] + bounds[1][0]) / 2,
      y = (bounds[0][1] + bounds[1][1]) / 2,
      scale = 1.2/ Math.max(dx / width, dy / height),
      translate = [width / 2 - scale * x, height / 2 - scale * y];

  g.transition()
      .duration(750)
      .style("stroke-width", 1/ scale + "px")
      .attr("transform", "translate(" + translate + ")scale(" + scale + ")");
}

function reset() {
  active.classed("active", false);
  active = d3.select(null);

  g.transition()
      .duration(750)
      .style("stroke-width", "1px")
      .attr("transform", "");
}