The drag plugin allows for modifying the planet's projection's rotation with the mouse. It supports dragging vertically with hard stops at the north and south poles, and dragging horizontally without restriction.
planetaryjs.plugins.drag([config])
Valid keys for config are:
onDrag, onDragStart, onDragEnd: hooks to the d3.behavior.drag object's drag, dragstart, and dragend events; each defaults to a no-opplanetaryjs.plugins.drag({
onDrag: function() {
console.log("The planet was dragged!", d3.event);
}
});