Apple Shake 4 - Manual (Page 836)

836 Chapter 27 Warping and Morphing Images
To change a curve by editing a point’s tangent handles:
1 Make sure the Show/Hide Tangents button is set to All (to view all tangents) or Pick (to
view only the tangents of points that you select).
2 Make sure the Lock/Unlock Tangents button is set to Unlock.
3 Do one of the following:
• To change the length of one of the tangent handles independently from the other,
while keeping the angle of both handles locked relative to each other, drag a handle
to lengthen or shorten it. You can also rotate both handles around the axis of the
selected point.
• To change the angle of one of the tangent handles relative to the other, along with
its length, press the Command or Control key while dragging a handle around the
axis of the selected point. The selected tangent handle moves, but the opposing
tangent handle remains stationary.