How to Draw a Circle with Centered Fadeing Out Gradients with HTML5 Canvas?
21,565
You want to use the ctx.createRadialGradient()
method.
var canvas = document.getElementById('canvas');
var ctx = canvas.getContext('2d');
var x = 100,
y = 75,
// Radii of the white glow.
innerRadius = 5,
outerRadius = 70,
// Radius of the entire circle.
radius = 60;
var gradient = ctx.createRadialGradient(x, y, innerRadius, x, y, outerRadius);
gradient.addColorStop(0, 'white');
gradient.addColorStop(1, 'blue');
ctx.arc(x, y, radius, 0, 2 * Math.PI);
ctx.fillStyle = gradient;
ctx.fill();
Example: http://jsfiddle.net/razh/sA6Wc/
Author by
user2336726
Updated on May 17, 2020Comments
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user2336726 about 4 years
How can I draw a circle with fadeing out gradients?
I mean something like this:
Getting darker and darker...
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user2336726 about 11 yearsI mean like a radial gradient...
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Ray Hulha over 9 yearsHere is a nice particle based on the accepted answer: jsfiddle.net/sA6Wc/422