Built with blockbuilder.org
Last active
May 20, 2019 08:47
-
-
Save GitNoise/7601e72e769923346068ee5c204db9ad to your computer and use it in GitHub Desktop.
force sim. along one axis w. bounds
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
| license: mit |
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> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <style> | |
| body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } | |
| body { padding: 50px} | |
| svg { border: 1px solid #ff3333;} | |
| </style> | |
| </head> | |
| <body> | |
| <script> | |
| const height = 350, | |
| width = 300, | |
| dotradius = 20; | |
| // Feel free to change or delete any of the code you see in this editor! | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height) | |
| const data = [ | |
| { y: 30, x: width/2}, | |
| { y: 30, x: width/2}, | |
| { y: 30, x: width/2}, | |
| { y: 30, x: width/2}, | |
| { y: 30, x: width/2}, | |
| { y: 30, x: width/2}, | |
| { y: 30, x: width/2}, | |
| ]; | |
| svg.append("g").classed("pre", true).selectAll("circle") | |
| .data(data) | |
| .enter() | |
| .append("circle") | |
| .attr("cx", d => d.x) | |
| .attr("cy", d => d.y) | |
| .attr("r", dotradius) | |
| .style("fill", "black") | |
| .style("fill-opacity",0.2) | |
| .style("stroke", "black") | |
| .style("stroke-opacity",0.5) | |
| const force = d3.forceSimulation() | |
| .nodes(data) | |
| .force('forceManyBody', d3.forceManyBody().strength(-1000)) | |
| //.force('collide', d3.forceCollide(dotradius).strength(1)) | |
| //.force('x', d3.forceX().strength(0.1)) | |
| .force('axis', box_force) | |
| .stop(); | |
| function box_force() { | |
| for (var i = 0, n = data.length; i < n; ++i) { | |
| let curr_node = data[i]; | |
| curr_node.x = width/2; | |
| curr_node.y = Math.max(dotradius, Math.min(height - dotradius, curr_node.y)); | |
| } | |
| } | |
| for(let i=0; i<100; i++) force.tick(); | |
| svg.append("g").classed("post", true).selectAll("circle") | |
| .data(data) | |
| .enter() | |
| .append("circle") | |
| .attr("cx", d => d.x + dotradius * 5) | |
| .attr("cy", d => d.y) | |
| .attr("r", dotradius) | |
| .style("fill", "red") | |
| .style("stroke", "red") | |
| .style("stroke-opacity", 0.5) | |
| .style("fill-opacity", 0.5) | |
| </script> | |
| </body> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment