Package dvedit :: Module core :: Class Transition

Class Transition

object --+        
         |        
      Clip --+    
             |    
         Blend --+
                 |
                Transition

Known Subclasses:: transitions.wipe.WipeTransition, transitions.template.TemplateTransition, transitions.crossfade.CrossfadeTransition

Base class for transitions between clips. Override the blendFrames method to implement your own transitions.

The required signature for it is:

   cdef int blendFrames(
       self,
       Frame frame1, Frame frame2,
       Frame frameX,
       float proportion) except -1:

   Arguments:
       - frame1 - a Frame from the first clip in the transition
       - frame2 - a Frame from the second clip in the transition
       - frameX - a Frame into which to write the result of the transition
       - proportion - degree of blend - 0 fully frame1, 1 fully frame2,
         anything in between means to perform the blend to that degree

Instance Methods

[hide private]

__init__(...)
x.__init__(...) initializes x; see x.__class__.__doc__ for signature

__new__(T, S, ...)
Returns: a new object with type S, a subtype of T

init(...)
Override this method in your subclasses to process constructor keyword parameters

updateNumFrames(...)
Determine the logical number of frames of this object

Inherited from Clip: __add__, __delitem__, __getitem__, __getslice__, __iter__, __len__, __mul__, __radd__, __rmul__, __setitem__, addKeyframe, append, extend, failIfLocked, getParm, getParms, render, setParms, transition, view

Inherited from object: __delattr__, __getattribute__, __hash__, __reduce__, __reduce_ex__, __repr__, __setattr__, __str__

Properties

[hide private]

clips

endtime

start

starttime

uiChildren
generates and returns a list of child nodes for the use of UIs

uiTitle
generates and returns a string title to use in user interfaces

xduration

Inherited from Blend: clip1Len, clip2Len

Inherited from Clip: keyframes, numFrames, sizeLocked

Inherited from Clip (private): _isPal

Inherited from object: __class__

Method Details

[hide private]

init(...)
(Constructor)

x.__init__(...) initializes x; see x.__class__.__doc__ for signature

Overrides: Blend.__init__

new(T, S, ...)

Returns:

a new object with type S, a subtype of T

Overrides: Blend.__new__

updateNumFrames(...)

Determine the logical number of frames of this object

Override in your subclass

Overrides: Blend.updateNumFrames: (inherited documentation)

Class Transition

__init__(...) (Constructor)

__new__(T, S, ...)

updateNumFrames(...)

init(...)
(Constructor)

new(T, S, ...)