JSFiddle - React, Tailwind, and code Playground
CSS
.overlay {
fill: none;
pointer-events: all;
}
JavaScript
var width = 300,
height = 300;
var randomX = d3.random.normal(width / 2, 80),
randomY = d3.random.normal(height / 2, 80);
var data = d3.range(2000).map(function() {
return [
randomX(),
randomY()
];
});
var zoomer = d3.behavior.zoom()
.on("zoom", zoom)
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height)
.append("g")
.call(zoomer)
.on("wheel.zoom",pan)
.append("g");
svg.append("rect")
.attr("class", "overlay")
.attr("width", width)
.attr("height", height);
svg.selectAll("circle")
.data(data)
.enter().append("circle")
.attr("r", 2.5)
.attr("transform", function(d) { return "translate(" + d + ")"; });
function zoom() {
console.log(d3.select(this))
svg.attr("transform", "translate(" + d3.event.translate + ")scale(" + d3.event.scale + ")");
}
function pan() {
current_translate = d3.transform(svg.attr("transform")).translate;
dx = d3.event.wheelDeltaX + current_translate[0];
dy = d3.event.wheelDeltaY + current_translate[1];
svg.attr("transform", "translate(" + [dx,dy] + ")");
d3.event.stopPropagation();
}