Function dragged

web_server/public/javascripts/draw_graph.js:271–279

(d)

        .clamp(true);

    function dragged(d) {
        var threshold = graph.draggedThreshold(graph.simulation.alpha()),
            dx = d.oldX - d.x,
            dy = d.oldY - d.y;
        if (Math.abs(dx) >= threshold || Math.abs(dy) >= threshold) {
            d.dragged = true;
        }
        return d.dragged;
    }

    graph.drag = d3.drag()
        .subject(function (d) { return d; })