QuickTime 4 Reference

Slide

kSlideTransitionType ('slid')

In a slide effect, source B slides onto the screen to cover source A. The angle from which source B enters the frame is stored in a parameter, with 0 degrees being the top of the screen.

Example:

In the example above, the angle parameter is tweened, causing source B to approach from a changing angle.

The slide effect takes a maximum of two sources and has two parameters.

Parameters

Use the descriptions below to help you understand what the parameters do. To learn how to use parameter atoms, see "Adding Video Effects to a QuickTime Movie"

Name	Code	QTAtom Type	Description
Percentage	`'pcnt'`	`kParameterTypeDataFixed` Always a tween	This parameter contains a tween. As the effect progresses, QuickTime renders the frame of the effect indicated by the tween's current value, as a percentage of the whole effect. For example, if the tween goes from 0 to 100, the effect renders completely; if the tween goes from 25 to 75, rendering begins 25% into the effect and terminates 75% through the effect.
Slide angle	`'angl'`	`kParameterTypeDataFixed` Can be a tween	The angle from which source B will enter the frame. This value is expressed in degrees, with `0` degrees defined as the top of the screen.

Name

Code

QTAtom Type

Description

Percentage

'pcnt'

kParameterTypeDataFixed

Always a tween

This parameter contains a tween. As the effect progresses, QuickTime renders the frame of the effect indicated by the tween's current value, as a percentage of the whole effect. For example, if the tween goes from 0 to 100, the effect renders completely; if the tween goes from 25 to 75, rendering begins 25% into the effect and terminates 75% through the effect.

Slide angle

'angl'

kParameterTypeDataFixed

Can be a tween

The angle from which source B will enter the frame. This value is expressed in degrees, with 0 degrees defined as the top of the screen.