alias: refD

Set `d` attribute of the `<path>` subelement relatively to the dimensions and position of the element referenced by the selector in the `ref` attribute. The `refD` path data is scaled so that the path's dimensions match the reference element's dimensions, and translated so that the path's origin matches the origin of the reference element.

The original path data offset is not preserved. This means that if the top-left corner of the `refD` bounding box does not lie at `0,0`, the path is translated so that this gap disappears. The rendered path then fits perfectly into the reference element's bounding box.

    var Path = joint.dia.Element.define('examples.Path', {
        attrs: {
            path: {
                refDResetOffset: 'M 10 10 30 10 30 30 z', // path offset of 10,10 will be discarded
                fill: 'red',
                stroke: 'black'
            }
        }
    }, {
        markup: 'path'
    });

    var p = (new Path()).resize(40, 40).addTo(graph);
    // the rendered path's `d` attribute will be 'M 0 0 40 0 40 40 z'
    // can be obtained by `p.findView(paper).vel.findOne('path').attr('d');`