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This article mainly shows you "how to use clip () function tailoring method in canvas", the content is easy to understand, clear, hope to help you solve your doubts, the following let Xiaobian lead you to study and learn "how to use clip () function clipping method in canvas" this article.

Draw a circle without cropping

* {margin:0;padding:0;}

Html,body {width:100%;height:100%;overflow:hidden;background-color:#AFAFAF;}

Varcanvas=document.getElementById ('canvas')

Context=canvas.getContext ('2d')

Canvas.width=document.body.clientWidth

Canvas.height=document.body.clientHeight

Context.lineWidth=3

Context.strokeStyle='red'

Context.beginPath ()

Context.arc (200 ~ 200 ~ 100, (Math.PI/180) * 0, (Math.PI/180) * 360 ~ ~ false)

Context.stroke ()

Context.closePath ()

Effect.

Use clip () to crop a region

* {margin:0;padding:0;}

Html,body {width:100%;height:100%;overflow:hidden;background-color:#AFAFAF;}

Varcanvas=document.getElementById ('canvas')

Context=canvas.getContext ('2d')

Canvas.width=document.body.clientWidth

Canvas.height=document.body.clientHeight

Context.lineWidth=3

Context.strokeStyle='red'

Context.rect (0Pol 0200200)

Context.clip ()

Context.beginPath ()

Context.arc (200 ~ 200 ~ 100, (Math.PI/180) * 0, (Math.PI/180) * 360 ~ ~ false)

Context.stroke ()

Context.closePath ()

Effect.

You can also use arc to draw a clipped area of a circle

* {margin:0;padding:0;}

Html,body {width:100%;height:100%;overflow:hidden;background-color:#AFAFAF;}

Varcanvas=document.getElementById ('canvas')

Context=canvas.getContext ('2d')

Canvas.width=document.body.clientWidth

Canvas.height=document.body.clientHeight

Context.lineWidth=3

Context.strokeStyle='red'

Context.arc (100, 100, 150, (Math.PI/180) * 0, (Math.PI/180) * 360, false)

Context.clip ()

Context.beginPath ()

Context.arc (200 ~ 200 ~ 100, (Math.PI/180) * 0, (Math.PI/180) * 360 ~ ~ false)

Context.stroke ()

Context.closePath ()

Effect.

Using save and restore to crop only a single path

* {margin:0;padding:0;}

Html,body {width:100%;height:100%;overflow:hidden;background-color:#AFAFAF;}

Varcanvas=document.getElementById ('canvas')

Context=canvas.getContext ('2d')

Canvas.width=document.body.clientWidth

Canvas.height=document.body.clientHeight

Context.lineWidth=3

Context.strokeStyle='red'

Context.save ()

Context.rect (0Pol 0200200)

Context.clip ()

Context.beginPath ()

Context.arc (200 ~ 200 ~ 100, (Math.PI/180) * 0, (Math.PI/180) * 360 ~ ~ false)

Context.stroke ()

Context.closePath ()

Context.restore ()

Context.beginPath ()

Context.arc (250, 250, 250, 100, (Math.PI/180) * 0, (Math.PI/180) * 360, false)

Context.stroke ()

Context.closePath ()

These are all the contents of the article "how to use the clip () function clipping method in canvas". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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