Adobe After Effects CS3 Uživatelský manuál stáhnout pdf (Strana 575)

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AFTER EFFECTS CS3

User Guide

570

Argument type: index is a Number.

After Effects finds the mask by its index in the Timeline panel, starting at 1 and counting from the top.

Layer General attributes and methods

width Return type: Number.

Returns the width of the layer, in pixels. It is the same as

source.width.

height Return type: Number.

Returns the height of the layer, in pixels. It is the same as

source.height.

index Return type: Number.

Returns the index number of the layer in the composition.

parent Return type: Layer, Light, or Camera.

Returns the parent Layer object of the layer, if there is one. Example:

position[0] + parent.width

hasParent Return type: Boolean.

Returns true if the layer has a parent or false if it doesn’t.

Use the

hasParent attributetodetermineifalayerhasaparent.Youcanusethisattributeevenifthereisn’taparent

layeratpresent.Forexample,thefollowingexpressionindicatesthatthelayertowhichyouapplyitwillwigglebased

on the position of the layer’s parent. If the layer has no parent, then it will wiggle based on its own position. If the

layer is given a parent later, then the layer’s behavior will change accordingly:

idx = index;

if (hasParent) {

idx = parent.index;

}

thisComp.layer(idx).position.wiggle(5,20)

inPoint Return type: Number.

Returns the In point of the layer, in seconds.

Note: In general, the value of

outPoint is greater than the value of inPoint.However,ifalayerisreversedintime,the

value of

inPointis greater than the value of outPoint.Similarly,thevalueofstartTimecanbegreaterthanthevalue

inPoint.

outPoint Return type: Number.

Returns the Out point of the layer, in seconds.

startTime Return type: Number.

Returns the start time of the layer, in seconds.

hasVideo Return type: Boolean.

Returns true if the layer has video, or false if it doesn’t.

hasAudio Return type: Boolean.

Returns true if the layer has audio or false if it doesn’t.

active Return type: Boolean.

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Adobe After Effects CS3 Uživatelský manuál Strana 575

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