Contents

draw(at:from:operation:fraction:)

Draws all or part of the image at the specified point in the current coordinate system.

Declaration

func draw(at point: NSPoint, from fromRect: NSRect, operation op: NSCompositingOperation, fraction delta: CGFloat)

Parameters

  • point:

    The location in the current coordinate system at which to draw the image.

  • fromRect:

    The source rectangle specifying the portion of the image you want to draw. The coordinates of this rectangle must be specified using the image’s own coordinate system.

  • op:

    The compositing operation to use when drawing the image. For details, see Nscompositingoperation.

  • delta:

    The opacity of the image, specified as a value from 0.0 to 1.0. Specifying a value of 0.0 draws the image as fully transparent while a value of 1.0 draws the image as fully opaque. Values greater than 1.0 are interpreted as 1.0.

Discussion

The image content is drawn at its current resolution and is not scaled unless the CTM of the current coordinate system itself contains a scaling factor. The image is otherwise positioned and oriented using the current coordinate system.

See Also

Drawing Images