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Chapter 11 Realtime FX
Working with Curves
In its original state (parameters not yet modified, Key Frames enabled), the curve appears as a straight
horizontal line at the zero level. A Key Frame (small box) is visible at each end point. The handles for the
Bezier function are parallel and horizontal (see “Bending Bezier Curves” on page 626).
 When you bring the mouse pointer near the curve, the pointer changes shape (pointing index
finger) and the curve is highlighted to indicate that it is now selected.
 When two lines initially overlap (for example, the Horizontal and Ve r t i c a l lines for the Size para-
meter), you can select one of the two lines by clicking in the parameter field and then edit it with
the mouse.
 Setting and moving a Key Frame on the curve -
Wherever you click, a Key Frame is set on the curve. You can then move the Key Frame wherever
you want (not entirely: some parameters have maximum values). An info box indicates the TC
value and parameter value.
 no key: Key Frame can be moved vertically (changes value);
hold
ALT key: Key Frame can be moved horizontally (changes position);
hold
CTRL key: Key Frame can be moved vertically and horizontally.
 Moving multiple Key Frames simultaneously -
Drag a lasso around the Key Frames that you want to move simultaneously and then drag one of
the Key Frames selected. You know which Key Frames are selected because the small boxes are
filled in.
 Moving the curve segment between two Key Frames -
This causes the curve (line) to move, including the two Key Frames. Clicking one Key Frame
affects the curve segment to its right, up to the next Key Frame.
 hold SHIFT key: segment can be moved vertically (changes values);
hold
ALT key: segment can be moved horizontally (changes positions);
hold
CTRL key: segment can be moved vertically and horizontally.
The shortcut menu for Key Frames on a curve contains the following options:
 Copy key frame(s) -
Copies the Key Frame(s) (use a lasso to select multiple Key Frames).
 Cut key frame(s) -
Deletes Key Frame(s) from their original locations.
 Paste key frame(s) -
Inserts previously cut or copied Key Frame(s) at the Playline position or, in the case of multiple
Key Frames, at the Playline position and to the right of it.
 Delete Key Frame from the curve -
Right-click Key Frame > Shortcut Menu > Delete key frame(s).