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HTML5 canvas createRadialGradient Method

HTML5 track Tag Reference HTML5 canvas reference

Example

Draw a circle with a red gradient filling:

JavaScript:

var canvas=document.getElementById("myCanvas");
var ctx=canvas.getContext("2d");
var grd=ctx.createRadialGradient(100,50,5,60,50,50);
grd.addColorStop(0,"red");
grd.addColorStop(1,"white");
ctx.fillStyle=grd;
ctx.fillRect(0,0,150,100);

Try it yourself »

Definition and Usage

The createRadialGradient method creates a gradient object that makes a circle using the specified parameters.

The x0 and y0 represents the coordinates, of the start circle, where r0 represents the radius.

The x1 and y1 represents the coordinates of the end circle, where r1 represents the radius.

Use the addColorStop() method to specify a color, and where to position the color in the gradient.

The gradient can be used to draw/fill rectangles, circles, lines etc.

JavaScript syntax:	context.createRadialGradient(x0,y0,r0,x1,y1,r1);

Browser Support

The createRadialGradient method is supported in all major browsers.

Parameter Values

Parameter	Description
x0	The x-coordinate of the start-circle of the gradient
y0	The y-coordinate of the start-circle of the gradient
r0	The radius of the start-circle of the gradient
x1	The x-coordinate of the end-circle of the gradient
y1	The y-coordinate of the end-circle of the gradient
r1	The radius of the end-circle of the gradient