HTML canvas bezierCurveTo() Method
Example
Draw a cubic B�zier curve:
JavaScript:
var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");
ctx.beginPath();
ctx.moveTo(20, 20);
ctx.bezierCurveTo(20, 100, 200, 100, 200, 20);
ctx.stroke();
Try it Yourself »
Browser Support
Internet Explorer 9, Firefox, Opera, Chrome, and Safari support the bezierCurveTo() method.
Definition and Usage
The bezierCurveTo() method adds a point to the current path by using the specified control points that represent a cubic B�zier curve.
A cubic bezier curve requires three points. The first two points are control points that are used in the cubic B�zier calculation and the last point is the ending point for the curve. The starting point for the curve is the last point in the current path. If a path does not exist, use the beginPath() and moveTo() methods to define a starting point.
Start point
moveTo(20,20)
Control point 1
bezierCurveTo(20,100,200,100,200,20)
Control point 2
bezierCurveTo(20,100,200,100,200,20)
End point
bezierCurveTo(20,100,200,100,200,20)
Tip: Check out the quadraticCurveTo() method. It has one control point instead of two.
| JavaScript syntax: | context.bezierCurveTo(cp1x,cp1y,cp2x,cp2y,x,y); |
|---|
Parameter Values
| Parameter | Description | Play it |
|---|---|---|
| cp1x | The x-coordinate of the first B�zier control point | Play it » |
| cp1y | The y-coordinate of the first B�zier control point | Play it » |
| cp2x | The x-coordinate of the second B�zier control point | Play it » |
| cp2y | The y-coordinate of the second B�zier control point | Play it » |
| x | The x-coordinate of the ending point | Play it » |
| y | The y-coordinate of the ending point | Play it » |
❮ HTML Canvas Reference
