createRadialGradient() Method - Javascript Canvas Reference

Javascript examples for Canvas Reference:createRadialGradient

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Description

The createRadialGradient() method creates a radial/circular gradient object which can be used to fill rectangles, circles, lines, text, etc.

JavaScript syntax 

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

Parameter Values

Parameter Description
x0The x-coordinate of the starting circle
y0The y-coordinate of the starting circle
r0The radius of the starting circle
x1The x-coordinate of the ending circle
y1The y-coordinate of the ending circle
r1The radius of the ending circle

Example

The following code shows how to draw a rectangle and fill with a radial/circular gradient.

Demo Code

ResultView the demo in separate window 

<!DOCTYPE html>
<html>
<body>

<canvas id="myCanvas" width="300" height="250" style="border:1px solid #d3d3d3;">
Your browser does not support the HTML5 canvas tag.</canvas>

<script>

var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");
var grd = ctx.createRadialGradient(75, 50, 5, 90, 60, 100);
grd.addColorStop(0, "red");
grd.addColorStop(1, "white");
ctx.fillStyle = grd;/* w w  w  .j ava  2 s .c  om*/
ctx.fillRect(10, 10, 150, 100);

</script>

</body>
</html>

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