iD/js/id/svg/surface.js

iD.svg.Surface = function() {
    return function drawSurface(selection) {
        var defs = selection.append('defs');
        defs.append('marker')
            .attr({
                id: 'oneway-marker',
                viewBox: '0 0 10 10',
                refY: 2.5,
                markerWidth: 2,
                markerHeight: 2,
                orient: 'auto'
            })
            .append('path')
            .attr('d', 'M 0 0 L 5 2.5 L 0 5 z');

        var patterns = defs.selectAll('pattern')
            .data([
                // pattern name, pattern image name
                ['wetland', 'wetland'],
                ['construction', 'construction'],
                ['cemetery', 'cemetery'],
                ['orchard', 'orchard'],
                ['farmland', 'farmland'],
                ['beach', 'dots'],
                ['scrub', 'dots'],
                ['meadow', 'dots']])
            .enter()
            .append('pattern')
                .attr({
                    id: function(d) { return 'pattern-' + d[0]; },
                    width: 32,
                    height: 32,
                    patternUnits: 'userSpaceOnUse'
                });

        patterns.append('rect')
            .attr({
                x: 0,
                y: 0,
                width: 32,
                height: 32,
                'class': function(d) { return 'pattern-color-' + d[0]; }
            });

        patterns.append('image')
            .attr({
                x: 0,
                y: 0,
                width: 32,
                height: 32
            })
            .attr('xlink:href', function(d) { return 'img/pattern/' + d[1] + '.png'; });


        var layers = selection.selectAll('.layer')
            .data(['fill', 'shadow', 'casing', 'stroke', 'text', 'hit', 'halo', 'label']);

        layers.enter().append('g')
            .attr('class', function(d) { return 'layer layer-' + d; });
    };
};