Last active
June 14, 2018 05:34
-
-
Save jjlumagbas/2254768983992fc3e85895b5633f358c to your computer and use it in GitHub Desktop.
Circle radius transition on change of slider
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"> | |
| <title>Input test (circle)</title> | |
| <p> | |
| <label for="nRadius" | |
| style="display: inline-block; width: 240px; text-align: right"> | |
| radius = <span id="nRadius-value">…</span> | |
| </label> | |
| <input type="range" min="1" max="2" id="nRadius"> | |
| </p> | |
| <script src="http://d3js.org/d3.v5.min.js"></script> | |
| <script> | |
| var data = [[50, 80], [80, 40]]; | |
| var width = 600; | |
| var height = 300; | |
| var holder = d3.select("body") | |
| .append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| holder.selectAll("circle") | |
| .data(data) | |
| .enter() | |
| .append("circle") | |
| .attr("cx", function(d, i) { return 300 + (i * 150); }) | |
| .attr("cy", 150) | |
| .style("fill", "none") | |
| .style("stroke", "blue") | |
| .attr("r", function(d) { return d[0]; }); | |
| // when the input range changes update the circle | |
| d3.select("#nRadius").on("input", function() { | |
| update(+this.value); | |
| }); | |
| // Initial starting radius of the circle | |
| update(1); | |
| // update the elements | |
| function update(nRadius) { | |
| // adjust the text on the range slider | |
| d3.select("#nRadius-value").text(nRadius); | |
| d3.select("#nRadius").property("value", nRadius); | |
| // update the circle radius | |
| holder.selectAll("circle") | |
| .data(data) | |
| .transition() | |
| .duration(1000) | |
| .attr("r", function(d) { return d[nRadius - 1]; }); | |
| } | |
| </script> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment