我正在努力在传单地图上定位和缩放 voronoi 图。voronoi 多边形在添加到地图后会正确显示,但在调整大小后,它们无法正确缩放和平移。我试图在平移和缩放到特征元素后重置路径。但看起来新值已传递给其父元素。如果我在 feature.selectAll('path).attr('d',path) 上设置路径,则缩放和平移是绝对正确的,但它显示的是 voronoi 意味着而不是 voronoi 多边形。任何想法?
此致,
弗洛
this.id = p_id;
this.data = p_data;
d3.select('#'+this.id).remove();
var svg = d3.select(map.getPanes().overlayPane).append("svg").attr('id', this.id);
var g = svg.append("g").attr("class", "leaflet-zoom-hide").attr("id", "cells");
var pointdata = this.data.features;
var positions = [];
pointdata.forEach(function(d){
positions.push(project(d.geometry.coordinates));
});
var polygons = d3.geom.voronoi(positions);
var bounds = d3.geo.bounds(this.data),
path = d3.geo.path().projection(project);
var feature = g.selectAll('g').data(pointdata).enter().append('g');
feature.append('path')
.attr('class', 'cell')
.attr({
"d":function(d, i) { return "M" + polygons[i].join("L") + "Z"},
stroke:"#43676b",
fill: "rgba(255,140,10,0.3)"
});
map.on("viewreset", reset);
reset();
function reset() {
scale = Math.pow(2, map.getZoom() - map.options.zoom);
var padding = 25;
var bottomLeft = project(bounds[0]),
topRight = project(bounds[1]);
bottomLeft = [bottomLeft[0]-padding, bottomLeft[1]+padding]
topRight = [topRight[0]+padding, topRight[1]-padding]
console.log(polygons);
svg.attr("width", topRight[0] - bottomLeft[0]).attr("height", bottomLeft[1] - topRight[1]).style("margin-left", bottomLeft[0] + "px").style("margin-top", topRight[1] + "px");
g.attr("transform", "translate(" + -bottomLeft[0] + "," + -topRight[1] + ")");
feature.attr('d', path);
}
function project(x) {
var point = map.latLngToLayerPoint(new L.LatLng(x[1], x[0]));
return [point.x, point.y];
}