Created
June 5, 2012 16:29
-
-
Save nkhine/2876083 to your computer and use it in GitHub Desktop.
This file contains 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"> | |
| <script src="http://mbostock.github.com/d3/d3.v2.js?2.8.1"></script> | |
| <div id="viz"></div> | |
| <div id="scale">scale: <span>240</span></div> | |
| <script type="text/javascript"> | |
| var feature; | |
| var width = 297, | |
| height = 235; | |
| var lat = 99.03, lon = 42.37; | |
| var projection = d3.geo.azimuthal() | |
| .scale(95) | |
| .origin([lat,lon]) | |
| .mode("orthographic") | |
| .translate([160, 100]); | |
| var circle = d3.geo.greatCircle() | |
| .origin(projection.origin()); | |
| // TODO fix d3.geo.azimuthal to be consistent with scale | |
| var scale = { | |
| orthographic: 95, | |
| stereographic: 95, | |
| gnomonic: 95, | |
| equidistant: 95 / Math.PI * 2, | |
| equalarea: 95 / Math.SQRT2 | |
| }; | |
| var path = d3.geo.path() | |
| .projection(projection); | |
| var svg = d3.select("#viz").append("svg:svg") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .on("mousedown", mousedown); | |
| svg.append("rect") | |
| .attr("fill", "none") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .attr("pointer-events", "all"); | |
| d3.json("world-countries.json", function(collection) { | |
| feature = svg.selectAll("path") | |
| .data(collection.features) | |
| .enter().append("svg:path") | |
| .on("mouseover", function(d) { d3.select(this).style("fill", | |
| "#ffffff"); }) | |
| .on("mouseout", function(d) { d3.select(this).style("fill", | |
| "#000000"); }) | |
| .on("click", click) | |
| .attr("d", clip); | |
| feature.append("svg:title") | |
| .text(function(d) { return d.properties.name; }); | |
| }); | |
| d3.select(window) | |
| .on("mousemove", mousemove) | |
| .on("mouseup", mouseup); | |
| d3.select("select").on("change", function() { | |
| projection.mode(this.value).scale(scale[this.value]); | |
| refresh(750); | |
| }); | |
| var m0, | |
| o0; | |
| function mousedown() { | |
| m0 = [d3.event.pageX, d3.event.pageY]; | |
| o0 = projection.origin(); | |
| d3.event.preventDefault(); | |
| } | |
| function mousemove() { | |
| if (m0) { | |
| var m1 = [d3.event.pageX, d3.event.pageY], | |
| o1 = [o0[0] + (m0[0] - m1[0]) / 8, o0[1] + (m1[1] - m0[1]) / 8]; | |
| projection.origin(o1); | |
| circle.origin(o1); | |
| refresh(); | |
| } | |
| } | |
| function click() { | |
| var o1 = projection.invert(d3.mouse(this)); | |
| var lat = o1[0] | |
| lon = o1[1]; | |
| console.log([o1]); | |
| projection.origin([o1]); | |
| circle.origin([o1]); | |
| refresh(); | |
| } | |
| function mouseup() { | |
| if (m0) { | |
| mousemove(); | |
| m0 = null; | |
| } | |
| } | |
| function refresh(duration) { | |
| (duration ? feature.transition().duration(duration) : feature).attr("d", clip); | |
| } | |
| function clip(d) { | |
| return path(circle.clip(d)); | |
| } | |
| </script> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment