Developer Documentation

QuickTime 4 API Documentation

Wired Movies and Sprites

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Flags for SpriteWorldIdle

You can pass the following flags as input to SpriteWorldIdle to control drawing of the sprite world.

enum {
    kOnlyDrawToSpriteWorld  = 1L << 0,
    kSpriteWorldPreFlight   = 1L << 1
};

Flag descriptions

kOnlyDrawToSpriteWorld
You set this flag to indicate that drawing should take place in the sprite world only; drawing to the final destination should be suppressed.
kSpriteWorldPreFlight
You can set this flag to determine whether the sprite world has any invalid areas that need to be drawn. If so, the SpriteWorldIdle function returns the kSpriteWorldNeedsToDraw flag in the flagsOut parameter.

 

The following flags may be returned in the flagsOut parameter of SpriteWorldIdle .

enum {
    kSpriteWorldDidDraw         = 1L << 0,
    kSpriteWorldNeedsToDraw     = 1L << 1
};

Flag descriptions

kSpriteWorldDidDraw
If set, this flag indicates that SpriteWorldIdle updated the sprite world.
kSpriteWorldNeedsToDraw
If set, this flag indicates that the sprite world has invalid areas that need to be drawn.
© 1999 Apple Computer, Inc.

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