The path for a point-based property to follow.
- iOS 2.0+
- macOS 10.5+
- Mac Catalyst 13.0+
- tvOS 9.0+
- Core Animation
For layer properties that contain a
CGPoint data type, the path object you assign to this property defines the values for that property over the length of the animation. If you specify a value for this property, any data in the
values property is ignored.
Any timing values you specify for the animation are applied to the points used to create the path. Paths can contain points defining move-to, line-to, or curve-to segments. The end point of a line-to or curve-to segment defines the keyframe value. All other points between that end value and the previous value are then interpolated. Move-to segments do not define separate keyframe values.
How the animation proceeds along the path is dependent on the value in the
calculation property. To achieve a smooth, constant velocity animation along the path, set the
calculation property to
k. To create an animation where the location value jumps from keyframe point to keyframe point (without interpolation in between), use the
k value. To animate along the path by interpolating values between points, use the