{
const svg = d3
.select(DOM.svg(width, height))
.style("width", width)
.style("height", "auto");
const g = svg.append("g");
const g2 = svg.append("g");
svg.append("defs").append("pattern")
.attr('id','bgimage')
.attr("width", "100%")
.attr("height", "100%")
.attr("x", "0")
.attr("y", "0")
.attr("viewBox", "0 0 5400 3800")
.append('image')
.attr('width',5400)
.attr('height',3800)
.attr('xlink:href','https://s3.amazonaws.com/files.zevross.org/temp-geo/terrain_img.png')
// points
let aa = [-122.490402, 37.786453];
let bb = [-122.389809, 37.72728];
// add circles to svg
let circles = svg.selectAll("circle")
.data([aa,bb]).enter()
.append("circle")
.attr("cx", function (d) { return projection(d)[0]; })
.attr("cy", function (d) { return projection(d)[1]; })
.attr("r", "8px")
.attr("fill", "red")
var zoom = d3
.zoom()
.scaleExtent([.3, 16])
.on("zoom", zoomed);
function zoomed() {
g.attr("transform", d3.event.transform);
circles.attr("transform", d3.event.transform);
g2.attr("transform", d3.event.transform);
}
svg.call(zoom);
g.append("path")
.datum(land)
.attr("d", path)
.attr("class", "land")
.style("fill", land_color);
let g2Path = g2.append("path")
.datum(box.geometry)
.attr("d", path)
.attr("class", "")
.attr('fill','url(#bgimage)')
.style("opacity","0.6")
.style("border","solid 1px black")
return svg.node();
}
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