mirror of
https://github.com/FoggedLens/iD.git
synced 2026-06-01 04:31:36 +02:00
Tom MacWright
325 lines
10 KiB
JavaScript
Executable File
325 lines
10 KiB
JavaScript
Executable File
iD.Map = function(elem) {
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if (!iD.supported()) {
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elem.innerHTML = 'This editor is supported in Firefox, Chrome, Safari, Opera, ' +
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'and Internet Explorer 9 and above. Please upgrade your browser ' +
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'or use Potlatch 2 to edit the map.';
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elem.style.cssText = 'text-align:center;font-style:italic;';
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return;
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}
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var version = 0;
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var map = {},
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width, height,
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dispatch = d3.dispatch('move', 'update'),
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// data
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graph = new iD.Graph(),
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connection = new iD.Connection(graph),
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inspector = iD.Inspector(graph),
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parent = d3.select(elem),
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selection = [],
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projection = d3.geo.mercator()
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.scale(512).translate([512, 512]),
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// behaviors
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zoombehavior = d3.behavior.zoom()
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.translate(projection.translate())
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.scale(projection.scale())
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.scaleExtent([256, 134217728])
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.on('zoom', zoomPan),
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dragbehavior = d3.behavior.drag()
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.origin(function(d) {
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var p = projection(d);
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return { x: p[0], y: p[1] };
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})
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.on('drag', function dragmove(d) {
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d3.select(this).attr('transform', function() {
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return 'translate(' + d3.event.x + ',' + d3.event.y + ')';
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});
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var ll = projection.invert([d3.event.x, d3.event.y]);
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d.lon = ll[0];
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d.lat = ll[1];
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drawVector();
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}),
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// geo
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linegen = d3.svg.line()
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.x(function(d) {
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var node = graph.head[d];
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return projection([node.lon, node.lat])[0];
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})
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.y(function(d) {
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var node = graph.head[d];
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return projection([node.lon, node.lat])[1];
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}),
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// Abstract linegen so that it pulls from `.children`. This
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// makes it possible to call simply `.attr('d', nodeline)`.
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nodeline = function(d) {
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return linegen(d.nodes);
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},
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key = function(d) { return d.id; };
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// Creating containers
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// -------------------
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// The map uses SVG groups in order to restrict
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// visual and event ordering - fills below casings, casings below
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// strokes, and so on.
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var surface = parent.append('svg')
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.call(zoombehavior);
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surface.append('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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var tilegroup = surface.append('g')
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.attr('clip-path', 'url(#clip)')
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.on('click', deselectClick),
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r = surface.append('g')
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.attr('clip-path', 'url(#clip)');
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var fill_g = r.append('g').attr('id', 'fill-g'),
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casing_g = r.append('g').attr('id', 'casing-g'),
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stroke_g = r.append('g').attr('id', 'stroke-g'),
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text_g = r.append('g').attr('id', 'text-g'),
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hit_g = r.append('g').attr('id', 'hit-g'),
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temp = r.append('g').attr('id', 'temp-g');
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var 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_marker = iD.Style.styleClasses('marker'),
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class_casing = iD.Style.styleClasses('casing');
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var tileclient = iD.Tiles(tilegroup, projection);
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function drawVector() {
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var all = graph.intersects(version, getExtent());
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var ways = all.filter(function(a) {
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return a.type === 'way' && !iD.Way.isClosed(a);
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}).sort(iD.Style.waystack),
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areas = all.filter(function(a) {
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return a.type === 'way' && iD.Way.isClosed(a);
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}),
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points = graph.pois(graph.head);
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var fills = fill_g.selectAll('path.area').data(areas, key),
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casings = casing_g.selectAll('path.casing').data(ways, key),
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strokes = stroke_g.selectAll('path.stroke').data(ways, key),
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markers = hit_g.selectAll('image.marker').data(points, key);
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var selected_id = selection && selection[0];
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// Fills
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fills.exit().remove();
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fills.enter().append('path')
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.on('click', selectClick);
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fills.attr('d', nodeline)
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.attr('class', class_area);
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// Casings
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casings.exit().remove();
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casings.enter().append('path');
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casings.order()
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.attr('d', nodeline)
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.attr('class', class_casing)
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.classed('active', function(d) {
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return d.id === selected_id;
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});
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// Strokes
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strokes.exit().remove();
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strokes.enter().append('path')
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.on('click', selectClick);
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strokes.order()
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.attr('d', nodeline)
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.attr('class', class_stroke)
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.classed('active', function(d) {
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return d.id === selected_id;
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});
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// Markers
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markers.exit().remove();
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markers.enter().append('image')
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.attr('class', class_marker)
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.on('click', selectClick)
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.attr({ width: 16, height: 16 })
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.attr('xlink:href', iD.Style.markerimage)
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.call(dragbehavior);
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markers.attr('transform', function(d) {
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var pt = projection([d.lon, d.lat]);
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pt[0] -= 8;
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pt[1] -= 8;
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return 'translate(' + pt + ')';
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});
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var active_entity = all.filter(function(a) {
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return a.id === selected_id && a.type === 'way';
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});
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var handles = hit_g.selectAll('circle.handle')
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.data(selection.length ? (active_entity.length ? active_entity[0].nodes : []) : [], key);
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handles.exit().remove();
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handles.enter().append('circle')
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.attr('class', 'handle')
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.attr('r', 5)
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.call(dragbehavior);
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handles.attr('transform', function(d) {
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var node = graph.head[d];
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return 'translate(' + projection([node.lon, node.lat]) + ')';
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});
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}
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function setSize(w, h) {
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width = w;
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height = h;
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surface.attr({ width: width, height: height });
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surface.selectAll('#clip-rect').attr({ width: width, height: height });
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tileclient.setSize(width, height);
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}
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var download = _.debounce(function() {
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connection.loadFromAPI(getExtent(), drawVector);
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}, 1000);
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function deselectClick() {
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selection = [];
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drawVector();
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d3.select('.inspector-wrap').style('display', 'none');
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d3.event.stopPropagation();
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}
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function selectClick(d) {
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selection = [d.id];
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drawVector();
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d3.select('.inspector-wrap')
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.style('display', 'block')
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.datum(d).call(inspector);
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d3.event.stopPropagation();
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}
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function zoomPan() {
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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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redraw();
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}
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function redraw() {
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dispatch.move(map);
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tileclient.redraw();
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if (getZoom() > 13) {
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download();
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drawVector();
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} else {
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// TODO: hide vector features
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}
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}
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// UI elements
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// -----------
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var undolabel = d3.select('button#undo small');
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dispatch.on('update', function() {
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undolabel.text(graph.annotations[graph.annotations.length - 1]);
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});
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// Getters & setters for map state
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// -------------------------------
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// The map state can be expressed entirely as the combination
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// of a centerpoint and a zoom level. Zoom levels are floating-point
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// values, and we express lat, lon points as `{ lat, lon }` objects.
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function getExtent() {
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return [
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projection.invert([0, 0]),
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projection.invert([width, height])];
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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 getZoom(zoom) {
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var s = projection.scale();
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return Math.max(Math.log(s) / Math.log(2) - 7, 0);
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}
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function setZoom(zoom) {
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// summary: Redraw the map at a new zoom level.
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var scale = 256 * Math.pow(2, zoom - 1);
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var l = pointLocation([width / 2, height / 2]);
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projection.scale(scale);
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zoombehavior.scale(projection.scale());
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var t = projection.translate();
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l = locationPoint(l);
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t[0] += (width / 2) - l[0];
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t[1] += (height / 2) - l[1];
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projection.translate(t);
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zoombehavior.translate(projection.translate());
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drawVector();
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redraw();
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return map;
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}
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function zoomIn() { return setZoom(Math.ceil(getZoom() + 1)); }
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function zoomOut() { return setZoom(Math.floor(getZoom() - 1)); }
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function getCenter() {
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var ll = projection.invert([
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width / 2,
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height / 2]);
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return {
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lon: ll[0],
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lat: ll[1]
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};
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}
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function setCenter(loc) {
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// summary: Update centre and bbox to a specified lat/lon.
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var t = projection.translate(),
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ll = projection([loc.lon, loc.lat]);
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projection.translate([
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t[0] - ll[0] + width / 2,
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t[1] - ll[1] + height / 2]);
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zoombehavior.translate(projection.translate());
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redraw();
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return map;
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}
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map.download = download;
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map.getExtent = getExtent;
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map.setCenter = setCenter;
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map.setCentre = setCenter;
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map.getCentre = getCenter;
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map.getCenter = getCenter;
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map.getZoom = getZoom;
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map.setZoom = setZoom;
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map.zoomIn = zoomIn;
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map.zoomOut = zoomOut;
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map.connection = connection;
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map.projection = projection;
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map.setSize = setSize;
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map.graph = graph;
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map.surface = surface;
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setSize(parent.node().offsetWidth, parent.node().offsetHeight);
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redraw();
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return d3.rebind(map, dispatch, 'on', 'move', 'update');
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};
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