PathWalker

Constructors

class PathWalker()

This is an interface, not a concrete class!

An object implementing this interface of optional callback functions can be used to get calls whenever Path.prototype.walk() iterates over a basic drawing operation corresponding to that of the function name.

closePath()

Called when Path.prototype.walk() encounters a close subpath operation.

curveTo(x1, y1, x2, y2, x3, y3)

Called when Path.prototype.walk() encounters an operation drawing a Bézier curve from the current point to (x3, y3) using (x1, y1) and (x2, y2) as control points.

../../../_images/curveTo.svg
Arguments:

  • x1 (number) – X1 coordinate.

  • y1 (number) – Y1 coordinate.

  • x2 (number) – X2 coordinate.

  • y2 (number) – Y2 coordinate.

  • x3 (number) – X3 coordinate.

  • y3 (number) – Y3 coordinate.

lineTo(x, y)

Called when Path.prototype.walk() encounters an operation drawing a straight line from the current point to the given point.

../../../_images/lineTo.svg
Arguments:

  • x (number) – X coordinate.

  • y (number) – Y coordinate.

moveTo(x, y)

Called when Path.prototype.walk() encounters an operation moving the pen to the given point, beginning a new subpath and sets the current point.

Arguments:

  • x (number) – X coordinate.

  • y (number) – Y coordinate.