TYPE: COP
TITLE: TimeMachine COP

This operation uses a second input to time warp the first input on a per pixel
basis. The second input image is interpreted as a ramp, where black pixels 
adjust the frame by 'Black Pixel Frame' and white pixels adjust the frame
by 'White Pixel Frame'. Grey values linearly interpolate between these two
frame values.

Try a Ramp COP as the second input.

Parameters
    Black Pixel Frame   - The frame value that a black pixel represents. 
    White Pixel Frame   - The frame value that a white pixel represents.

			  Pixels between the black and white will have frame
			  values that are linearly interpolated between the
			  Black Pixel Frame and the White Pixel Frame. Values
			  above white or below black will be extrapolated. 

    Relative to Current Frame - If on, the frame value is added to the
			  current frame.  If off, the frame values
			  represent actual frames.
    Blend Frames        - If on, fractional frames are computed and pixels from
                          the two nearest frames are linearly blended together
                          to produce the output frame's pixel.
    Before Start       - If a filtered frame is before the beginning of the
                          sequence, this determines what frame to use.
	Black  - A black frame.
        Cycle  - Cycle back into the sequence from the end (so 2 frames before
                 the start will use frame 'end-2'). 
        Mirror - Mirror back into the sequence (so 2 frames before will use
                 frame 'start+2').
        Hole   - Use the first frame.

    After End           - Similar to 'Before Start', except this parameter 
                          determines what frame to use if filtering goes past
                          the last frame of the sequence.

Mask & Plane Scope, Frame Scope
    Overview - See extra help (Middle click on the dialog '?' help).

Local Variables:
    L   - Sequence length
    S   - Start of sequence
    E   - End of sequence
    IL  - Input sequence length
    SR  - Sequence frame rate
    NP  - Number of planes in sequence
    W,H - Width and height of image
    I   - Image index (0 at start frame)
    IT  - Image time (0 at start frame)
    AI  - Current plane array index
    PI  - Current plane index
    PC  - Num of channels in current plane

See Also: TimeWarp (warp), TimeFilter, TimeScale, Shift, Trim
