Created
November 23, 2016 08:59
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Save anonymous/3ec4cd5b88160853e0cfbe64c5e3465e to your computer and use it in GitHub Desktop.
JS Bin // source http://jsbin.com/regicedate
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <meta name="viewport" content="width=device-width"> | |
| <title>JS Bin</title> | |
| <style id="jsbin-css"> | |
| svg { | |
| height: 1000px; | |
| width: 1000px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <svg> | |
| <path id="arc1" fill="none" stroke="#446688" stroke-width="1" /> | |
| </svg> | |
| <script id="jsbin-javascript"> | |
| function polarToCartesian(centerX, centerY, radius, angleInDegrees) { | |
| var angleInRadians = (angleInDegrees-90) * Math.PI / 180.0; | |
| return { | |
| x: centerX + (radius * Math.cos(angleInRadians)), | |
| y: centerY + (radius * Math.sin(angleInRadians)) | |
| }; | |
| } | |
| function describeArc(x, y, radius, startAngle, endAngle){ | |
| var start = polarToCartesian(x, y, radius, endAngle); | |
| var end = polarToCartesian(x, y, radius, startAngle); | |
| var largeArcFlag = endAngle - startAngle <= 180 ? "0" : "1"; | |
| var d = [ | |
| "M", start.x, start.y, | |
| "A", radius, radius, 0, largeArcFlag, 0, end.x, end.y | |
| ].join(" "); | |
| return d; | |
| } | |
| window.onload = function() { | |
| document.getElementById("arc1").setAttribute("d", describeArc(150, 100, 50, -90, +90)); | |
| }; | |
| </script> | |
| <script id="jsbin-source-css" type="text/css">svg { | |
| height: 1000px; | |
| width: 1000px; | |
| }</script> | |
| <script id="jsbin-source-javascript" type="text/javascript">function polarToCartesian(centerX, centerY, radius, angleInDegrees) { | |
| var angleInRadians = (angleInDegrees-90) * Math.PI / 180.0; | |
| return { | |
| x: centerX + (radius * Math.cos(angleInRadians)), | |
| y: centerY + (radius * Math.sin(angleInRadians)) | |
| }; | |
| } | |
| function describeArc(x, y, radius, startAngle, endAngle){ | |
| var start = polarToCartesian(x, y, radius, endAngle); | |
| var end = polarToCartesian(x, y, radius, startAngle); | |
| var largeArcFlag = endAngle - startAngle <= 180 ? "0" : "1"; | |
| var d = [ | |
| "M", start.x, start.y, | |
| "A", radius, radius, 0, largeArcFlag, 0, end.x, end.y | |
| ].join(" "); | |
| return d; | |
| } | |
| window.onload = function() { | |
| document.getElementById("arc1").setAttribute("d", describeArc(150, 100, 50, -90, +90)); | |
| }; | |
| </script></body> | |
| </html> |
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| svg { | |
| height: 1000px; | |
| width: 1000px; | |
| } |
This file contains hidden or 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
| function polarToCartesian(centerX, centerY, radius, angleInDegrees) { | |
| var angleInRadians = (angleInDegrees-90) * Math.PI / 180.0; | |
| return { | |
| x: centerX + (radius * Math.cos(angleInRadians)), | |
| y: centerY + (radius * Math.sin(angleInRadians)) | |
| }; | |
| } | |
| function describeArc(x, y, radius, startAngle, endAngle){ | |
| var start = polarToCartesian(x, y, radius, endAngle); | |
| var end = polarToCartesian(x, y, radius, startAngle); | |
| var largeArcFlag = endAngle - startAngle <= 180 ? "0" : "1"; | |
| var d = [ | |
| "M", start.x, start.y, | |
| "A", radius, radius, 0, largeArcFlag, 0, end.x, end.y | |
| ].join(" "); | |
| return d; | |
| } | |
| window.onload = function() { | |
| document.getElementById("arc1").setAttribute("d", describeArc(150, 100, 50, -90, +90)); | |
| }; |
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