image(from:scale:)

Declaration

func image(from rect: CGRect, scale: CGFloat) -> UIImage

func image(from rect: CGRect, scale: CGFloat) -> NSImage

Parameters

• rect:

  The portion of the drawing that you want to capture. Specify a rectangle in the canvas’ coordinate system.

• scale:

  The scale factor at which to create the image. Specifying scale factors greater than 1.0 creates an image with more detail. For example, you might specify a scale factor of 2.0 or 3.0 when displaying the image on a Retina display.

Return Value

A new image object that contains the rendered content.

Discussion

This method creates a new image and renders content from the canvas into that image at the specified scale factor.