This plugin draws a donut shape using the provided drawDonut() method.
This plugin adds a special holeSize property, which is a multiple of the donut’s diameter, and determines the diameter of the donut hole. The default value is 0.5.
$('canvas').drawDonut({
fillStyle: '#633',
x: 100,
y: 100,
radius: 50,
// Set the hole's diameter to 40% of the donut's diameter