Theme: A circle, surrounded by four small circles.
Last active
May 23, 2016 02:50
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Random Fractals - IV
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { | |
| text-align: center; | |
| font-family: monospace !important; | |
| } | |
| circle { | |
| stroke: black; | |
| stroke-width: 0.1; | |
| fill: rgba(192, 57, 43, 0.2); | |
| } | |
| </style> | |
| <body> | |
| <div id="plot"></div> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script> | |
| <script> | |
| var width = 500; | |
| var height = 500; | |
| function get_mp(p1, p2) { | |
| return [(p1[0] + p2[0]) / 2, (p1[1] + p2[1]) / 2]; | |
| } | |
| function get_polygon_points(points) { | |
| var pts = ""; | |
| for (var i = 0; i < points.length; i++) { | |
| for (var j = 0; j < points[i].length; j++) { | |
| if (i < points.length - 1) { | |
| pts += points[i][j] + ","; | |
| } else { | |
| pts += points[i][j] + " "; | |
| } | |
| } | |
| pts += " " | |
| } | |
| return pts; | |
| } | |
| function get_children(box) { | |
| var children = [ | |
| [ | |
| [box[0][0], box[0][1]], | |
| [box[0][0], (box[0][1] + box[1][1]) / 2], | |
| [(box[0][0] + box[3][0]) / 2, (box[0][1] + box[1][1]) / 2], | |
| [(box[0][0] + box[3][0]) / 2, box[0][1]] | |
| ], | |
| [ | |
| [box[0][0], (box[0][1] + box[1][1]) / 2], | |
| [box[0][0], box[1][1]], | |
| [(box[1][0] + box[2][0]) / 2, box[1][1]], | |
| [(box[0][0] + box[3][0]) / 2, (box[0][1] + box[1][1]) / 2], | |
| ], | |
| [ | |
| [(box[0][0] + box[3][0]) / 2, (box[0][1] + box[1][1]) / 2], | |
| [(box[1][0] + box[2][0]) / 2, box[1][1]], | |
| [box[2][0], box[2][1]], | |
| [box[2][0], (box[2][1] + box[3][1]) / 2] | |
| ], | |
| [ | |
| [(box[0][0] + box[3][0]) / 2, box[0][1]], | |
| [(box[0][0] + box[3][0]) / 2, (box[0][1] + box[1][1]) / 2], | |
| [box[2][0], (box[0][1] + box[1][1]) / 2], | |
| [box[2][0], box[3][1]] | |
| ] | |
| ]; | |
| return children; | |
| } | |
| function add_circle(box) { | |
| var w = box[3][0] - box[0][0]; | |
| space.append("circle") | |
| .attr("cx", (box[0][0] + box[3][0]) / 2) | |
| .attr("cy", (box[0][1] + box[1][1]) / 2) | |
| .attr("r", w / 12); | |
| return; | |
| } | |
| var space = d3.select("body") | |
| .append("svg") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .append("g"); | |
| var boxes = [ | |
| [ | |
| [0, height], | |
| [0, 0], | |
| [width, 0], | |
| [height, width] | |
| ] | |
| ]; | |
| for (var i = 0; i < boxes.length; i++) { | |
| add_circle(boxes[i]); | |
| var children = get_children(boxes[i]); | |
| for (var j = 0; j < children.length; j++) { | |
| add_circle(children[j]); | |
| boxes.push(children[j]); | |
| } | |
| //4, 20, 84, 420, 1364 | |
| if (i == 1364) { | |
| break; | |
| } | |
| } | |
| </script> | |
| </body> |
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