Contents
Navigation
Home User Reference Other Resources


The cloud effect uses a fractal noise generator to simulate a cloud formation. This can be transparently overlaid on an image. The cloud formation’s colors can be controlled, and the cloud randomly changes shape over time. The cloud effect takes no sources.

The QTPlgEffectCloudDesc class implements methods and properties to setup programmatically the parameters of the cloud effect provided natively by QuickTime.







The QTPlgEffectCloudDesc class constructors are called when you create a new instance of the class, while the ˜QTPlgEffectCloudDesc class destructor, is called automatically when the class is no more in use. Also, you can invoke the class destructor by setting the instance of the class to nil.
Once a new class instance is returned, it is good practice to check the class property to be sure that the new object can be used. For discussion about the validity of an effect description instance see the documentation relative to the .

The class provides you with the following initializer methods:
()
This is the default constructor. Use this constructor to create a completely new data descriptor container in memory.
(other as )
This is the copy constructor. The properties of the object to be copied will be used to initialize the new class instance properties. Note that the parameter passed is a generic object; this is due to the fact that you could use a descriptor obtained by the that returns a generic . Anyway, the class makes a control to check if the passed object is suitable for use and, if not, will initialize the class instance with default values

determines the vertical rotation of the cloud around its axis. Legal range is 0 to 360
determines the foreground color of the cloud. The color will gradually change from the color defined by the property to that one defined by the property
determines the background color of the cloud. The color will gradually change from the color defined by the property to that one defined by the property