mirror of
https://github.com/FoggedLens/iD.git
synced 2026-02-26 07:23:40 +00:00
548 lines
17 KiB
JavaScript
548 lines
17 KiB
JavaScript
iD.Map = function() {
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var connection,
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dimensions = [],
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dispatch = d3.dispatch('move', 'update'),
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inspector = iD.Inspector(),
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selection = null,
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translateStart,
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apiTilesLoaded = {},
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projection = d3.geo.mercator(),
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zoom = d3.behavior.zoom()
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.translate(projection.translate())
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.scale(projection.scale())
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.scaleExtent([1024, 256 * Math.pow(2, 20)])
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.on('zoom', zoomPan),
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only,
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dblclickEnabled = true,
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dragbehavior = d3.behavior.drag()
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.origin(function(entity) {
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var p = projection(ll2a(entity));
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only = iD.Util.trueObj([entity.id].concat(
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_.pluck(map.history.graph().parents(entity.id), 'id')));
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return { x: p[0], y: p[1] };
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})
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.on('dragstart', function() {
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map.history.perform(iD.actions.noop());
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d3.event.sourceEvent.stopPropagation();
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})
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.on('drag', function(entity) {
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var to = projection.invert([d3.event.x, d3.event.y]);
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d3.event.sourceEvent.stopPropagation();
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map.history.replace(iD.actions.move(entity, to));
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redraw(only);
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})
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.on('dragend', redraw),
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nodeline = function(d) {
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return 'M' + d.nodes.map(ll2a).map(projection).map(roundCoords).join('L');
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},
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getline = function(d) { return d._line; },
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key = function(d) { return d.id; },
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background = iD.Background()
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.projection(projection),
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class_stroke = iD.Style.styleClasses('stroke'),
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class_fill = iD.Style.styleClasses('stroke'),
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class_area = iD.Style.styleClasses('area'),
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class_casing = iD.Style.styleClasses('casing'),
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prefix = prefixMatch(['webkit', 'ms', 'Moz', 'O']),
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transformProp = prefix + 'transform',
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supersurface, surface, defs, tilegroup, r, g, alength;
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function map() {
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supersurface = this.append('div').call(zoom);
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surface = supersurface.append('svg')
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.on('mouseup', resetTransform)
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.on('touchend', resetTransform);
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defs = surface.append('defs');
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defs.append('clipPath')
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.attr('id', 'clip')
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.append('rect')
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.attr('id', 'clip-rect')
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.attr({ x: 0, y: 0 });
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tilegroup = surface.append('g')
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.on('click', deselectClick);
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r = surface.append('g')
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.on('click', selectClick)
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.on('mouseover', nameHoverIn)
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.on('mouseout', nameHoverOut)
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.attr('clip-path', 'url(#clip)');
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g = ['fill', 'casing', 'stroke', 'text', 'hit', 'temp'].reduce(function(mem, i) {
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return (mem[i] = r.append('g').attr('class', 'layer-g')) && mem;
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}, {});
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var arrow = surface.append('text').text('►----');
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alength = arrow.node().getComputedTextLength();
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arrow.remove();
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map.size(this.size());
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hideInspector();
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map.surface = surface;
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}
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map.history = iD.History();
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function prefixMatch(p) { // via mbostock
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var i = -1, n = p.length, s = document.body.style;
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while (++i < n) if (p[i] + 'Transform' in s) return '-' + p[i].toLowerCase() + '-';
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return '';
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}
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function ll2a(o) { return [o.lon, o.lat]; }
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function roundCoords(c) { return [Math.floor(c[0]), Math.floor(c[1])]; }
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function hideInspector() {
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d3.select('.inspector-wrap').style('display', 'none');
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}
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function classActive(d) { return d.id === selection; }
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function nodeIntersect(entity, extent) {
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return entity.lon > extent[0][0] &&
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entity.lon < extent[1][0] &&
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entity.lat < extent[0][1] &&
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entity.lat > extent[1][1];
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}
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function isArea(a) {
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return iD.Way.isClosed(a) || (a.tags.area && a.tags.area === 'yes');
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}
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function drawVector(only) {
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if (surface.style(transformProp) != 'none') return;
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var all = [], ways = [], areas = [], points = [], waynodes = [],
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extent = map.extent(),
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graph = map.history.graph();
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if (!only) {
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all = graph.intersects(extent);
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} else {
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for (var id in only) all.push(graph.fetch(id));
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}
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var filter = only ?
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function(d) { return only[d.id]; } : function() { return true; };
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if (all.length > 2000) {
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return hideVector();
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}
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for (var i = 0; i < all.length; i++) {
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var a = all[i];
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if (a.type === 'way') {
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a._line = nodeline(a);
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if (isArea(a)) areas.push(a);
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else ways.push(a);
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} else if (a._poi) {
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points.push(a);
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} else if (!a._poi && a.type === 'node' && nodeIntersect(a, extent)) {
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waynodes.push(a);
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}
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}
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drawHandles(waynodes, filter);
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drawCasings(ways, filter);
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drawFills(areas, filter);
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drawStrokes(ways, filter);
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drawMarkers(points, filter);
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}
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function drawHandles(waynodes, filter) {
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var handles = g.hit.selectAll('image.handle')
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.filter(filter)
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.data(waynodes, key);
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handles.exit().remove();
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handles.enter().append('image')
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.attr({ width: 6, height: 6, 'class': 'handle', 'xlink:href': 'css/handle.png' })
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.call(dragbehavior);
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handles.attr('transform', function(entity) {
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var p = projection(ll2a(entity));
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return 'translate(' + [~~p[0], ~~p[1]] + ') translate(-3, -3) rotate(45, 3, 3)';
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}).classed('active', classActive);
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}
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function hideVector() {
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surface.selectAll('.layer-g *').remove();
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}
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function drawFills(areas, filter) {
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var fills = g.fill.selectAll('path')
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.filter(filter)
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.data(areas, key);
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fills.exit().remove();
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fills.enter().append('path')
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.attr('class', class_area)
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.classed('active', classActive);
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fills
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.attr('d', getline)
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.attr('class', class_area)
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.classed('active', classActive);
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}
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function drawMarkers(points, filter) {
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var markers = g.hit.selectAll('g.marker')
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.filter(filter)
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.data(points, key);
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markers.exit().remove();
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var marker = markers.enter().append('g')
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.attr('class', 'marker')
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.call(dragbehavior);
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marker.append('circle')
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.attr({ r: 10, cx: 8, cy: 8 });
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marker.append('image')
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.attr({ width: 16, height: 16 });
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markers.attr('transform', function(d) {
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var pt = projection([d.lon, d.lat]);
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return 'translate(' + [~~pt[0], ~~pt[1]] + ') translate(-8, -8)';
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})
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.classed('active', classActive);
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markers.select('image').attr('xlink:href', iD.Style.markerimage);
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}
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function isOneWay(d) { return d.tags.oneway && d.tags.oneway === 'yes'; }
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function drawStrokes(ways, filter) {
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var strokes = g.stroke.selectAll('path')
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.filter(filter)
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.data(ways, key);
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strokes.exit().remove();
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strokes.enter().append('path')
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.attr('class', class_stroke)
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.classed('active', classActive);
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strokes
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.order()
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.attr('d', getline)
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.attr('class', class_stroke)
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.classed('active', classActive);
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// Determine the lengths of oneway paths
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var lengths = {},
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oneways = strokes.filter(isOneWay).each(function(d) {
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lengths[d.id] = Math.floor(this.getTotalLength() / alength);
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}).data();
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var uses = defs.selectAll('path')
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.data(oneways, key);
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uses.exit().remove();
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uses.enter().append('path');
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uses
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.attr('id', function(d) { return 'shadow-' + d.id; })
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.attr('d', getline);
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var labels = g.text.selectAll('text')
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.data(oneways, key);
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labels.exit().remove();
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var tp = labels.enter()
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.append('text').attr({ 'class': 'oneway', dy: 4 })
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.append('textPath').attr('class', 'textpath');
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g.text.selectAll('.textpath')
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.attr('xlink:href', function(d, i) { return '#shadow-' + d.id; })
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.text(function(d) {
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return (new Array(Math.floor(lengths[d.id]))).join('►----');
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});
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}
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function drawCasings(ways, filter) {
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var casings = g.casing.selectAll('path')
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.filter(filter)
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.data(ways, key);
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casings.exit().remove();
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casings.enter().append('path')
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.attr('class', class_casing)
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.classed('active', classActive);
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casings
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.order()
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.attr('d', getline)
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.attr('class', class_casing)
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.classed('active', classActive);
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}
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map.size = function(_) {
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if (!arguments.length) return dimensions;
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dimensions = _;
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surface
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.size(dimensions)
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.selectAll('#clip-rect')
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.size(dimensions);
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background.size(dimensions);
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redraw();
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return map;
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};
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function tileAtZoom(t, distance) {
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var power = Math.pow(2, distance);
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return [
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Math.floor(t[0] * power),
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Math.floor(t[1] * power),
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t[2] + distance];
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}
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function tileAlreadyLoaded(c) {
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if (apiTilesLoaded[c]) return false;
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for (var i = 0; i < 4; i++) {
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if (apiTilesLoaded[tileAtZoom(c, -i)]) return false;
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}
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return true;
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}
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function apiTiles() {
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var t = projection.translate(),
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s = projection.scale(),
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z = Math.max(Math.log(s) / Math.log(2) - 8, 0),
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rz = Math.floor(z),
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ts = 512 * Math.pow(2, z - rz),
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tile_origin = [s / 2 - t[0], s / 2 - t[1]],
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coords = [],
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cols = d3.range(Math.max(0, Math.floor(tile_origin[0] / ts)),
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Math.max(0, Math.ceil((tile_origin[0] + dimensions[0]) / ts))),
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rows = d3.range(Math.max(0, Math.floor(tile_origin[1] / ts)),
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Math.max(0, Math.ceil((tile_origin[1] + dimensions[1]) / ts)));
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cols.forEach(function(x) {
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rows.forEach(function(y) {
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coords.push([x, y, rz]);
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});
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});
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function apiExtentBox(c) {
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var x = (c[0] * ts) - tile_origin[0];
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var y = (c[1] * ts) - tile_origin[1];
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apiTilesLoaded[c] = true;
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return [
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projection.invert([x, y]),
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projection.invert([x + ts, y + ts])];
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}
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return coords.filter(tileAlreadyLoaded).map(apiExtentBox);
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}
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function apiRequestExtent(extent) {
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connection.bboxFromAPI(extent, function (result) {
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if (result instanceof Error) {
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// TODO: handle
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} else {
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map.history.merge(result);
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drawVector(iD.Util.trueObj(Object.keys(result.entities)));
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}
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});
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}
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var download = _.debounce(function() {
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apiTiles().map(apiRequestExtent);
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}, 1000);
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function nameHoverIn() {
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var entity = d3.select(d3.event.target).data();
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if (entity) d3.select('.messages').text(entity[0].tags.name || '#' + entity[0].id);
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}
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function nameHoverOut() { d3.select('.messages').text(''); }
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function deselectClick() {
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var hadSelection = !!selection;
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selection = null;
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if (hadSelection) {
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redraw();
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hideInspector();
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}
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}
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function selectEntity(entity) {
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selection = entity.id;
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d3.select('.inspector-wrap')
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.style('display', 'block')
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.datum(map.history.graph().fetch(entity.id)).call(inspector);
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redraw();
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}
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function selectClick() {
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var entity = d3.select(d3.event.target).data();
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if (entity) entity = entity[0];
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if (!entity || selection === entity.id || (entity.tags && entity.tags.elastic)) return;
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selection = entity.id;
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d3.select('.inspector-wrap')
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.style('display', 'block')
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.datum(map.history.graph().fetch(entity.id)).call(inspector);
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redraw();
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}
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function removeEntity(entity) {
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// Remove this node from any ways that is a member of
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map.history.graph().parents(entity.id)
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.filter(function(d) { return d.type === 'way'; })
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.forEach(function(parent) {
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parent.nodes = _.without(parent.nodes, entity.id);
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map.perform(iD.actions.removeWayNode(parent, entity));
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});
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map.perform(iD.actions.remove(entity));
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}
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inspector.on('changeTags', function(d, tags) {
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var entity = map.history.graph().entity(d.id);
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map.perform(iD.actions.changeTags(entity, tags));
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}).on('changeWayDirection', function(d) {
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map.perform(iD.actions.changeWayDirection(d));
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}).on('remove', function(d) {
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removeEntity(d);
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hideInspector();
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}).on('close', function() {
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deselectClick();
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hideInspector();
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});
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function zoomPan() {
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if (d3.event && d3.event.sourceEvent.type === 'dblclick') {
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if (!dblclickEnabled) return;
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}
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var fast = (d3.event.scale === projection.scale());
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projection
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.translate(d3.event.translate)
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.scale(d3.event.scale);
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if (fast) {
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if (!translateStart) translateStart = d3.event.translate.slice();
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var a = d3.event.translate,
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b = translateStart;
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surface.style(transformProp,
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'translate3d(' + ~~(a[0] - b[0]) + 'px,' + ~~(a[1] - b[1]) + 'px, 0px)');
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} else {
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redraw();
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translateStart = null;
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}
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}
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function resetTransform() {
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if (!surface.style(transformProp)) return;
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translateStart = null;
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surface.style(transformProp, '');
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redraw();
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}
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function redraw(only) {
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if (!only) {
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dispatch.move(map);
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tilegroup.call(background);
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}
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if (map.zoom() > 16) {
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download();
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drawVector(only);
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} else {
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hideVector();
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}
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return map;
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}
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map.perform = function(action) {
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map.history.perform(action);
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map.update();
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redraw();
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return map;
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};
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map.undo = function() {
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map.history.undo();
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map.update();
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redraw();
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return map;
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};
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map.redo = function() {
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map.history.redo();
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map.update();
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redraw();
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return map;
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};
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function dblclickEnable(_) {
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if (!arguments.length) return dblclickEnabled;
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dblclickEnabled = _;
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return map;
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}
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function pointLocation(p) {
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var translate = projection.translate(),
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scale = projection.scale();
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return [(p[0] - translate[0]) / scale, (p[1] - translate[1]) / scale];
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}
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function locationPoint(l) {
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var translate = projection.translate(),
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scale = projection.scale();
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return [l[0] * scale + translate[0], l[1] * scale + translate[1]];
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}
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function pxCenter() {
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return [dimensions[0] / 2, dimensions[0] / 2];
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}
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map.zoom = function(z) {
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if (!arguments.length) {
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return Math.max(Math.log(projection.scale()) / Math.log(2) - 7, 0);
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}
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// summary: Redraw the map at a new zoom level.
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var scale = 256 * Math.pow(2, z - 1);
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var center = pxCenter();
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var l = pointLocation(center);
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projection.scale(scale);
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zoom.scale(projection.scale());
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var t = projection.translate();
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l = locationPoint(l);
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t[0] += center[0] - l[0];
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t[1] += center[1] - l[1];
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projection.translate(t);
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zoom.translate(projection.translate());
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redraw();
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return map;
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};
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map.zoomIn = function() { return map.zoom(Math.ceil(map.zoom() + 1)); };
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map.zoomOut = function() { return map.zoom(Math.floor(map.zoom() - 1)); };
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map.center = function(loc) {
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if (!arguments.length) {
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return projection.invert(pxCenter());
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} else {
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var t = projection.translate(),
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c = pxCenter(),
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ll = projection(loc);
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projection.translate([
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t[0] - ll[0] + c[0], t[1] - ll[1] + c[1]]);
|
|
zoom.translate(projection.translate());
|
|
redraw();
|
|
return map;
|
|
}
|
|
};
|
|
|
|
map.extent = function() {
|
|
return [projection.invert([0, 0]), projection.invert(dimensions)];
|
|
};
|
|
|
|
map.flush = function () {
|
|
apiTilesLoaded = {};
|
|
return map;
|
|
};
|
|
|
|
map.connection = function(_) {
|
|
if (!arguments.length) return connection;
|
|
connection = _;
|
|
return map;
|
|
};
|
|
|
|
map.background = background;
|
|
map.projection = projection;
|
|
map.redraw = redraw;
|
|
map.selectEntity = selectEntity;
|
|
map.dblclickEnable = dblclickEnable;
|
|
|
|
return d3.rebind(map, dispatch, 'on', 'move', 'update');
|
|
};
|