Adobe After Effects CS3 Bedienungsanleitung PDF herunterladen (Seite 567)

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AFTER EFFECTS CS3

User Guide

562

Argument type: t is a Number, ntscDropFrame and isDuration are Booleans.

Converts t to a String representing NTSC timecode. See

timeToFrames for an explanation of the t and isDuration

arguments. If ntscDropFrame is false (the default), the result String is NTSC non-drop-frame timecode. If ntscDrop-

Frame is true, the result String is NTSC drop-frame timecode.

timeToFeetAndFrames(t = time + thisComp.displayStartTime, fps = 1.0 / thisComp.frameDuration, framesPerFoot =

16, isDuration = false)

Return type: String.

Argument type: t, fps, and framesPerFoot are Numbers; isDuration is a Boolean.

Converts the value of t to a String representing feet of film and frames. See

timeToFrames for an explanation of the

t, fps,andisDuration arguments. The framesPerFoot argument specifies the number of frames in one foot of film. It

defaults to 16, which is the most common rate for 35mm footage.

timeToCurrentFormat(t = time + thisComp.displayStartTime, fps = 1.0 / thisComp.frameDuration, isDuration = false)

Return type: String.

Argument type: t and fps are Numbers; isDuration is a Boolean.

Converts the value of t to a String representing time in the current Project Settings display format. See

timeToF-

rames

for a definition of all of the arguments.

If you want more control over the look of timecode in your footage, use the

timeToCurrentFormat method or other

timeTo methods to generate the timecode instead of using the Timecode or Numbers effect. Create a text layer, add

an expression to the Source Text property, and enter

timeToCurrentFormat() in the expression field. This method

enables you to format and animate the timecode text. In addition, the timecode uses the same display style defined by

the current project settings.

See also

“Change time display units” on page 131

Vector Math methods

VectorMathfunctionsareglobalmethodsthatperformoperationsonarrays,treatingthemasmathematicalvectors.

Unlike built-in JavaScript methods, such as

Math.sin, these methods are not used with the Math prefix. Unless

otherwise specified, Vector Math methods are lenient about dimensions and return a value that is the dimension of

the largest Array, filling in missing elements with zeros. For example, the expression

add([10, 20], [1, 2, 3])

returns [11, 22, 3].

add(vec1, vec2) Return type: Array.

Argument type: vec1 and vec2 are Arrays.

Adds two vectors.

sub(vec1, vec2) Return type: Array.

Argument type: vec1 and vec2 are Arrays.

Subtracts two vectors.

mul(vec, amount) Return type: Array.

Argument type: vec is an Array, amount is a Number.

Multiplies every element of the vector by the amount.

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