Question

I want to visualize data as a tree, but also I want to customize default link appearance. There shown default appearance, but I want to create links which looks like Rational Software Architect links. Is it possible?

Answer 1

I’ve done it with writing my own path handler. Here is the sample code:

function elbow(d) {
        var radius = 10;

        var xOffsetSign = Math.sign(d.source.x - d.target.x);
        var yOffsetSign = Math.sign(d.source.y - d.target.y);

        if (xOffsetSign != 0) {
            var ellipseXDirection = (xOffsetSign * yOffsetSign) > 0 ? 1 : 0;

            return "M" + d.source.x + "," + d.source.y
                + " H" + (d.target.x + xOffsetSign * radius)
                + " A" + radius + "," + radius + " 0 0," + ellipseXDirection + " " + d.target.x + "," + (d.source.y - yOffsetSign * radius)
                + " V" + d.target.y
                + (d.target.children ? "" : "h" + margin.right);
        } else {
            return "M" + d.source.x + "," + d.source.y
                + " H" + d.target.x + " V" + d.target.y
                + (d.target.children ? "" : "h" + margin.right);
        }
    }

Function Math.sign is my own implementation