CanvasRenderingContext2D: fill() method

The CanvasRenderingContext2D.fill() method of the Canvas 2D API fills the current or given path with the current fillStyle.

Syntax

js
fill()
fill(path)
fill(fillRule)
fill(path, fillRule)

Parameters

fillRule

The algorithm by which to determine if a point is inside or outside the filling region. Possible values:

nonzero

The non-zero winding rule. Default rule.

evenodd

The even-odd winding rule.

path

A Path2D path to fill.

Return value

None (undefined).

Examples

undefined

Filling a rectangle

This example fills a rectangle with the fill() method.

HTML

html
<canvas id="canvas"></canvas>

JavaScript

js
const canvas = document.getElementById("canvas");
const ctx = canvas.getContext("2d");
ctx.rect(10, 10, 150, 100);
ctx.fill();

Result

Specifying a path and a fillRule

This example saves some intersecting lines to a Path2D object. The fill() method is then used to render the object to the canvas. A hole is left unfilled in the object's center by using the "evenodd" rule; by default (with the "nonzero" rule), the hole would also be filled.

HTML

html
<canvas id="canvas"></canvas>

JavaScript

js
const canvas = document.getElementById("canvas");
const ctx = canvas.getContext("2d");

// Create path
let region = new Path2D();
region.moveTo(30, 90);
region.lineTo(110, 20);
region.lineTo(240, 130);
region.lineTo(60, 130);
region.lineTo(190, 20);
region.lineTo(270, 90);
region.closePath();

// Fill path
ctx.fillStyle = "green";
ctx.fill(region, "evenodd");

Result

Specifications

See also