A simpler variation of programmatic zoom without the use of transitions.
-
-
Save koshdnb/dfe5e5b51b1a9b709c61 to your computer and use it in GitHub Desktop.
Programmatic Pan+Zoom II
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| license: gpl-3.0 |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <title>Zoom + Pan</title> | |
| <style> | |
| body { | |
| position: relative; | |
| width: 960px; | |
| } | |
| svg { | |
| font: 10px sans-serif; | |
| shape-rendering: crispEdges; | |
| } | |
| rect { | |
| fill: #ddd; | |
| } | |
| .axis path, | |
| .axis line { | |
| fill: none; | |
| stroke: #fff; | |
| } | |
| button { | |
| position: absolute; | |
| right: 30px; | |
| top: 30px; | |
| } | |
| </style> | |
| <button>Reset</button> | |
| <script src="//d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| var margin = {top: 20, right: 20, bottom: 30, left: 40}, | |
| width = 960 - margin.left - margin.right, | |
| height = 500 - margin.top - margin.bottom; | |
| var x = d3.scale.linear() | |
| .domain([-width / 2, width / 2]) | |
| .range([0, width]); | |
| var y = d3.scale.linear() | |
| .domain([-height / 2, height / 2]) | |
| .range([height, 0]); | |
| var xAxis = d3.svg.axis() | |
| .scale(x) | |
| .orient("bottom") | |
| .tickSize(-height); | |
| var yAxis = d3.svg.axis() | |
| .scale(y) | |
| .orient("left") | |
| .ticks(5) | |
| .tickSize(-width); | |
| var zoom = d3.behavior.zoom() | |
| .x(x) | |
| .y(y) | |
| .scaleExtent([1, 10]) | |
| .on("zoom", zoomed); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width + margin.left + margin.right) | |
| .attr("height", height + margin.top + margin.bottom) | |
| .append("g") | |
| .attr("transform", "translate(" + margin.left + "," + margin.top + ")") | |
| .call(zoom); | |
| svg.append("rect") | |
| .attr("width", width) | |
| .attr("height", height); | |
| svg.append("g") | |
| .attr("class", "x axis") | |
| .attr("transform", "translate(0," + height + ")") | |
| .call(xAxis); | |
| svg.append("g") | |
| .attr("class", "y axis") | |
| .call(yAxis); | |
| d3.select("button").on("click", reset); | |
| function zoomed() { | |
| svg.select(".x.axis").call(xAxis); | |
| svg.select(".y.axis").call(yAxis); | |
| } | |
| function reset() { | |
| svg.call(zoom | |
| .x(x.domain([-width / 2, width / 2])) | |
| .y(y.domain([-height / 2, height / 2])) | |
| .event); | |
| } | |
| </script> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment