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Other HTML Canvas Graphics


In our previous post we have learnt about HTML Canvas and create some canvas drawings with the help of JavaScript. Now in this post we will about some other HTML canvas graphics.

Draw Linear Gradient

In an example below we will write a code to draw a linear gradient:

Example

<!DOCTYPE html>
<html>
<head>
 <title>
 Draw Linear Gradient
 </title> 
<body> 
<canvas id = "myCanvas" width="200" height = "100" style= "border:1px solid #d3d3d3;">
<script>
var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");

// Create gradient
var grd = ctx.createLinearGradient(0, 0, 200, 0);
grd.addColorStop(0, "black");
grd.addColorStop(1, "white");

// Fill with gradient
ctx.fillStyle = grd;
ctx.fillRect(10, 10, 150, 80);
</script>
</body>
</html>

Draw a Circular Gradient

Example

<!DOCTYPE html>
<html>
<body>
<canvas id="myCanvas" width="200" height="100" style="border:1px solid #d3d3d3;">
Your browser does not support the HTML canvas tag.</canvas>
<script>
var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");
// Create gradient
var grd = ctx.createRadialGradient(75,50,5,90,60,100);
grd.addColorStop(0,"black");
grd.addColorStop(1,"white");

// Fill with gradient
ctx.fillStyle = grd;
ctx.fillRect(10,10,150,80);
</script>

</body>
</html>

Output

Your browser does not support the HTML canvas tag.

Draw a Stroke Text

Example

<!DOCTYPE html>
<html>
<body>

<canvas id="myCanvas" width="300" height="100" style="border:2px solid #d3d3d3;">
Your browser does not support the HTML canvas tag.</canvas>

<script>
var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");
ctx.font = "30px Arial";
ctx.strokeText("This is a stroke text", 10,50);
</script>

</body>
</html>

Output

Your browser does not support the HTML canvas tag.

Draw an Arc

Example

<!DOCTYPE html>
<html>
<head>
<title>Drawing an Arc</title>
<style>
	canvas {
		border: 2px solid #d3d3d3;
	}
</style>
<script>
    window.onload = function() {
        var canvas = document.getElementById("myCanvas");
        var context = canvas.getContext("2d");
        context.arc(150, 150, 80, 1.2 * Math.PI, 1.8 * Math.PI, false);
        context.stroke();
    };
</script>
</head>
<body>
    <canvas id="myCanvas" width="300" height="200"></canvas>
</body>
</html>

Output

Drawing an Arc

How to Fill Colors Inside the Canvas Shapes

We can fill colors inside the canvas shapes by using the fillStyle() method.

In a below example we will show you how to fill a black color rectangular shaped inside the canvas.

Example

<!DOCTYPE html>
<html>
<head>
<title>Filling Color inside the Canvas</title>
<style>
	canvas {
		border: 2px solid #d3d3d3;
	}
</style>
<script>
    window.onload = function() {
        var canvas = document.getElementById("myCanvas");
        var context = canvas.getContext("2d");
        context.rect(50, 50, 200, 100); 
        context.fillStyle = "#000000";
        context.fill();
        context.lineWidth = 5;
        context.strokeStyle = "white";
        context.stroke();
    };
</script>
</head>
<body>
    <canvas id="myCanvas" width="300" height="200"></canvas>
</body>
</html>

Output

Filling Color inside the Canvas


Related Posts

HTML Canvas

HTML id Attribute

Class Attribute in HTML

Other HTML Canvas Graphics – crus4

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