scale(by:)
Applies the specified scaling factor along both x and y axes to the receiver’s transformation matrix.
Declaration
func scale(by scale: Double)Parameters
- scale:
The scaling factor to apply to both axes. Specifying a negative value has the effect of inverting the direction of the axes in addition to scaling them. A scaling factor of 1.0 scales the content to exactly the same size.
Discussion
After invoking this method, applying the receiver’s matrix modifies the unit lengths along the current x and y axes by a factor of scale, in addition to performing all previous transformations.