How css fills the canvas shape with gradient color
This article will explain in detail how css fills the canvas shape with gradual discoloration. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.
You can also fill the canvas shape with a gradient. A gradient is just a smooth visual transition from one color to another. There are two types of gradients available: linear gradient and radial gradient.
The basic syntax for creating a linear gradient can be given in the following ways:
Var grd = context.createLinearGradient (startX,startY,endX,endY)
The following example uses the createLinearGradient () method to fill the interior of a rectangle with a linear gradient color. Let's try to understand the basics of how it works:
Try this code for example »
_ window.onload = function () {
Var canvas = document.getElementById ("myCanvas")
Var context = canvas.getContext ("2d")
Context.rect (50,50,200,100)
Var grd = context.createLinearGradient (0,0, canvas.width, canvas.height)
Grd.addColorStop (0,'# 8ED6FF')
Grd.addColorStop (1,'# 004CB3')
Context.fillStyle = grd
Context.fill ()
Context.stroke ()
}
Similarly, you can use the createRadialGradient () method to fill the canvas shape with a radial gradient. The basic syntax for creating a radial gradient can be given in the following ways:
Var grd = context.createRadialGradient (startX,startY,startRadius,endX,endY,endRadius)
The following example uses the createRadialGradient () method to fill the circle with a radial gradient color. Let's try to understand how it actually works:
Try this code for example »
_ window.onload = function () {
Var canvas = document.getElementById ("myCanvas")
Var context = canvas.getContext ("2d")
Context.arc (150,100,70,0,2 * Math.PI, false)
Var grd = context.createRadialGradient (150,100,10,160,110,100)
Grd.addColorStop (0,'# 8ED6FF')
Grd.addColorStop (1,'# 004CB3')
Context.fillStyle = grd
Context.fill ()
Context.stroke ()
}
This is the end of the article on "how to fill the canvas shape with gradual discoloration". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.
