Hello there,
Just wondering whether there was a way to simulate parallax within digital fusion using expressions, and what that math might be. I would like to be able to specify actual distances between objects at different z-depths, attatched to a track of the background plate and watch the resulting realword parallax action.
any help would be appreciated!
seth
Hello zeroping, sorry for the delay.
This is a simple divide-by-Z equation. An expression can be added
to the position of each layer merged, and set up as follows:
Animate 'Number In 1' with a spline; this is the X position animation before
parallax correction. This same spline will want to be connected to Number
In 1 on every parallax expression you have, so the positions all animate in
sync.
Set "Number In 2" to the Z position of this layer (positive values greater
than 1.0 will probably work best)
Set "Point Expression Y" to: 0.5
Set "Point Expression X" to: 0.5 + n1/n2
This last one is the equation that does the work; it is simply the
animation position divided by Z, offset by 0.5 to keep it relative to the
centre of the image.
Cheers,
Adam
eyeon Software