in src/core/force.js [36:50]
force.options = function(x){
if (!arguments.length) return options;
options = helper.extend(options, x);
var disOptions = helper.pick(options, Object.keys(Distributor.DEFAULT_OPTIONS));
if(helper.isDefined(options.minPos)&&helper.isDefined(options.maxPos)){
disOptions.layerWidth = options.maxPos - options.minPos;
}
else{
disOptions.layerWidth = null;
}
distributor.options(disOptions);
return force;
};