Contents

init(rect:transform:)

Create an immutable path of a rectangle.

Declaration

init(rect: CGRect, transform: UnsafePointer<CGAffineTransform>?)

Parameters

  • rect:

    The rectangle to add.

  • transform:

    A pointer to an affine transformation matrix, or NULL if no transformation is needed. If specified, Core Graphics applies the transformation to the rectangle before it is added to the path.

Return Value

A new, immutable path. You are responsible for releasing this object.

Discussion

This is a convenience function that creates a path of an rectangle. Using this convenience function is more efficient than creating a mutable path and adding an rectangle to it.

Calling this function is equivalent to using CGRectGetMinX(_:) and related functions to find the corners of the rectangle, then using the CGPathMoveToPoint, CGPathAddLineToPoint, and closeSubpath() functions to draw the rectangle.

See Also

Creating Graphics Paths