Adobe After Effects CS3 Manual de usuario descargar pdf (Pagina 265)

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AFTER EFFECTS CS3

User Guide

260

Control mask path color

To help you identify and work with masks, the Composition and Layer panels outline a mask’s path with color, and

the Timeline panel displays that same color next to the mask’s name. By default, After Effects uses the color yellow

for all masks. To make each mask more distinctive, you can manually change a mask’s color using the Timeline panel,

or you can set After Effects to cycle through mask colors for new masks.

Apply a new color to a mask outline

To make it easier to work with multiple masks in the Composition panel, you can apply different colors to each mask

outline.

1 Select the mask in the Timeline panel.

2 Click the color swatch to the left of the mask name, pick a new color, and click OK.

Set After Effects to cycle through mask colors

Choose Edit > Preferences > User Interface Colors.

2 Select Cycle Mask Colors.

After Effects cycles through different mask colors.

Mask modes

Blending modes for masks (mask modes) control how masks within a layer interact with one another. By default, all

masksaresettoAdd,whichcombinesthetransparencyvaluesofanymasksthatoverlaponthesamelayer.Youcan

apply a mode to each mask, but you can’t animate a mask’s mode—that is, you can’t change a mask mode over time.

You choose a mask mode for a mask from the menu next to the mask name in the Timeline panel.

Thefirstmaskthatyoucreateinteractswiththelayer’salphachannel.Ifthatchanneldoesn’tdefinetheentireimage

as opaque, then the mask interacts with the layer frame. Each additional mask you create interacts with masks located

above it in the stacking order in the Timeline panel. The results of mask modes vary depending on the modes set for

the masks higher up in the stacking order. Mask modes only operate between masks on the same layer.

Using mask modes, you can create complex compound masks with multiple transparent areas. For example, you can

set a mask mode that combines two masks and sets the opaque area to the areas where the two masks intersect.

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Adobe After Effects CS3 Manual de usuario Pagina 265

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