Example_D3_part2

calculateCoords.js

App.prototype.calculateCoords = function (rowNumber, currentShape) {
    var max_y = 20;
    d3.selectAll('g.group').each(function (d) {
        var coords = d3.transform(d3.select(this).attr("transform"));
        var grpX = coords.translate[0];
        var grpY = coords.translate[1];
        if (grpY > max_y) {
            max_y = grpY;
        }
    });
    var y;
    if (rowNumber == 0 ) {
        y = max_y + currentShape.h + 20;
        y = currentShape.type == 'rect' ? y : y + 20;
    } else {
        y = max_y + currentShape.h;
    }
    var x = currentShape.type == 'rect' ? 20 : 40;
    return { x: x, y: y};
};