This animated stopwatch is used in a couple of places in the Stitch Fix Algorithms Tour to inform the reader that a timing-based animation is proceeding. The svg drawing was made by Liz Cruz.
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May 10, 2017 13:30
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Stopwatch
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| .stopwatch { | |
| fill: none; | |
| stroke: #231F20; | |
| stroke-width: 0.5; | |
| stroke-linecap: round; | |
| stroke-linejoin: round; | |
| stroke-miterlimit: 10; | |
| } | |
| .stopwatch-center { | |
| fill: #d0d2d3; | |
| } | |
| </style> | |
| <body> | |
| <svg width="960" height="500"> | |
| <g transform="translate(400,150) scale(4)"> | |
| <circle class="stopwatch" cx="23.8" cy="24.1" r="10.1"/> | |
| <path class="stopwatch" d="M28.2,15l0.6-1.4c0.9,0.3,1.7,0.8,2.4,1.4l-1,1.3"/> | |
| <rect class="stopwatch" x="20.4" y="10.1" width="6.7" height="2.3"/> | |
| <line class="stopwatch" x1="22.8" y1="14" x2="22.8" y2="12.4"/> | |
| <line class="stopwatch" x1="24.8" y1="12.4" x2="24.8" y2="14"/> | |
| <path class="stopwatch stopwatch-center" d=""/> | |
| </g> | |
| </svg> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <script> | |
| var duration = 2500, | |
| repeat = 3 | |
| function draw_stopwatch_arc(angle){ | |
| var r = 7.4 | |
| var cx = 23.8 | |
| var cy = 24.1 | |
| var px = r * Math.sin(angle) | |
| var py = -1 * r * Math.cos(angle) | |
| var d = "M" + cx + "," + cy + " " | |
| d += "l" + px + "," + py + " " | |
| if (angle < Math.PI) { | |
| d += "A " + r + " " + r + " 0 0 0 " + (cx) + " " + (cy - r) + " " | |
| } else { | |
| d += "A " + r + " " + r + " 0 0 0 " + (cx) + " " + (cy + r) + " " | |
| d += "A " + r + " " + r + " 0 0 0 " + (cx) + " " + (cy - r) + " " | |
| } | |
| d3.select(".stopwatch-center") | |
| .transition().duration(0) | |
| .attr("d", d) | |
| } | |
| var stopwatch_timer = false | |
| function stopwatch_single_turn(duration){ | |
| if (stopwatch_timer) { stopwatch_timer.stop() } | |
| stopwatch_timer = d3.timer(function(t){ | |
| if (t > duration) { stopwatch_timer.stop() } | |
| else { draw_stopwatch_arc(t * 2 * Math.PI / duration) } | |
| }) | |
| } | |
| var count = 1 | |
| stopwatch_interval = d3.interval(function(){ | |
| stopwatch_single_turn(duration) | |
| count += 1 | |
| if (count >= repeat) { stopwatch_interval.stop() } | |
| }, duration) | |
| stopwatch_single_turn(duration) | |
| </script> |
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