Mac Dev Center Mac OS X Reference Library Apple Applications: Final Cut Pro/Final Cut Express FxPlug Reference

Introduction

Defines the functions the host application provides to get information about the layer where an effect is currently applied.

Methods

-getLayerGlobalOffsetX:OffsetY:atTime:

Requests the offset of the bottom left corner of the layer where an effect is applied.

Requests the offset of the bottom left corner of the layer where an effect is applied.

- (BOOL)getLayerGlobalOffsetX:(double *)offsetX OffsetY:(double *)offsetY atTime:(double)time;

Parameters

offsetX

Pointer for the X offset of the layer.

offsetY

Pointer for the Y offset of the layer.

time

The time to get this information, expressed in canonical frames.

Return Value

Returns YES if the application successfully provides the layer information; NO otherwise.

Discussion

Depending on the host application, the time value may be relative to the start of the timeline or to the start of the clip. See the header file FxPlug/FxHostCapabilities.h.