HTML canvas arcTo()Method
Canvas ObjectExamples
Create an arc between two tangents on the canvas:
JavaScript：
var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");
ctx.beginPath();
ctx.moveTo(20,20); //Create starting point
ctx.lineTo(100,20); //Create horizontal line
ctx.arcTo(150,20,150,70,50); //Create arc
ctx.lineTo(150,120); //Create vertical line
ctx.stroke(); //Draw
Try it Yourself »
Browser Support
Internet Explorer 9, Firefox, Chrome, and Safari support the arcTo() method.
Note:Opera does not support the arcTo() method.
Note:Internet Explorer 8 and earlier versions do not support the <canvas> element.
Definition and Usage
The arcTo() method creates an arc/curve between two tangents on the canvas.
Tip:Please usestroke()method
| JavaScript Syntax: | context.arcTo(x1,y1,x2,y2,r); |
|---|
Parameter Values
| Parameter | Description |
|---|---|
| x1 | The x-axis coordinate of the first control point. |
| y1 | The y-axis coordinate of the first control point. |
| x2 | The x-axis coordinate of the second control point. |
| y2 | The y-axis coordinate of the second control point. |
| r | The radius of the arc. |
Other Extensions