quadraticCurveTo method

Adds a point to the current subpath by using the specified control points that represent a quadratic Bézier curve.

 

Syntax

object.quadraticCurveTo(cp1x, cp1y, x, y);

Parameters

• cp1x [in]
  Type: number

  The x-coordinate of the Bézier control point.

• cp1y [in]
  Type: number

  The y-coordinate of the Bézier control point.

• x [in]
  Type: number

  The x-coordinate of the point to add to the current path.

• y [in]
  Type: number

  The y-coordinate of the point to add to the current path.

Return value

This method does not return a value.

Standards information

• HTML Canvas 2D Context, Section 9

Remarks

A quadratic Bézier curve requires two points. The first point is a control point that is used in the quadratic Bézier calculation and the second point is the ending point for the curve. The starting point for the curve is the last point in the existing current subpath. If a path does not exist, use the ICanvasRenderingContext2D::beginPath and ICanvasRenderingContext2D::moveTo methods to set a starting point.

See also

ICanvasRenderingContext2D::bezierCurveTo