CanvasRenderingContext2D: clip() method
=======================================

 The
 **`CanvasRenderingContext2D.clip()`**
 method of the Canvas 2D API turns the current or given path into the current clipping
 region. The previous clipping region, if any, is intersected with the current or given
 path to create the new clipping region.

 In the image below, the red outline represents a clipping region shaped like a star.
 Only those parts of the checkerboard pattern that are within the clipping region get
 drawn.

![Star-shaped clipping region](/en-US/docs/Web/API/CanvasRenderingContext2D/clip/canvas_clipping_path.png)


**Note:** Be aware that the clipping region is only constructed from
 shapes added to the path. It doesn't work with shape primitives drawn directly to the
 canvas, such as `fillRect()`.
 Instead, you'd have to use `rect()` to
 add a rectangular shape to the path before calling `clip()`.


**Note:** Clip paths cannot be reverted directly. You must save your canvas state using `save()` before calling `clip()`, and restore it once you have finished drawing in the clipped area using `restore()`.

Syntax
------


```js
clip()
clip(path)
clip(fillRule)
clip(path, fillRule)
```

### Parameters

`fillRule`

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


`nonzero`

 The non-zero winding rule.
 Default rule.


`evenodd`

The even-odd winding rule.


`path`

A `Path2D` path to use as the clipping region.

### Return value

None (`undefined`).

Examples
--------

### A simple clipping region

 This example uses the `clip()` method to create a clipping region according
 to the shape of a circular arc. Two rectangles are then drawn; only those parts within
 the clipping region are rendered.

#### HTML


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


#### JavaScript

The clipping region is a full circle, with its center at (100, 75), and a radius of 50.


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

// Create circular clipping region
ctx.beginPath();
ctx.arc(100, 75, 50, 0, Math.PI \* 2);
ctx.clip();

// Draw stuff that gets clipped
ctx.fillStyle = "blue";
ctx.fillRect(0, 0, canvas.width, canvas.height);
ctx.fillStyle = "orange";
ctx.fillRect(0, 0, 100, 100);
```


#### Result

### Specifying a path and a fillRule

 This example saves two rectangles to a Path2D object, which is then made the current
 clipping region using the `clip()` method. The `"evenodd"` rule
 creates a hole where the clipping rectangles intersect; by default (with the
 `"nonzero"` rule), there would be no hole.

#### HTML


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


#### JavaScript


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

// Create clipping path
let region = new Path2D();
region.rect(80, 10, 20, 130);
region.rect(40, 50, 100, 50);
ctx.clip(region, "evenodd");

// Draw stuff that gets clipped
ctx.fillStyle = "blue";
ctx.fillRect(0, 0, canvas.width, canvas.height);
```


#### Result

### Creating a complex clipping region

 This example uses two paths, a rectangle and a square to create a complex clipping
 region. The `clip()` method is called twice, first to set the current
 clipping region to the circle using a `Path2D` object, then again to
 intersect the circle clipping region with a square. The final clipping region is a shape
 representing the intersection of the circle and the square.

#### HTML


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


#### JavaScript


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

// Create two clipping paths
let circlePath = new Path2D();
circlePath.arc(150, 75, 75, 0, 2 \* Math.PI);
let squarePath = new Path2D();
squarePath.rect(85, 10, 130, 130);

// Set the clip to the circle
ctx.clip(circlePath);
// Set the clip to be the intersection of the circle and the square
ctx.clip(squarePath);

// Draw stuff that gets clipped
ctx.fillStyle = "blue";
ctx.fillRect(0, 0, canvas.width, canvas.height);
```


#### Result

Specifications
--------------

| Specification |
| --- |
| HTML Standard # dom-context-2d-clip-dev |

Browser compatibility
---------------------

BCD tables only load in the browser with JavaScript enabled. Enable JavaScript to view data.

See also
--------

* The interface defining this method: `CanvasRenderingContext2D`