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Draw an arc in SVG using path
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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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Learn more about bidirectional Unicode characters
svg { | |
height: 1000px; | |
width: 1000px; | |
} |
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
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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