Parallax scrolling between foreground (presentation content) and background

[mildred]

See: https://en.wikipedia.org/wiki/Parallax_scrolling

It would be nice to have the ability to set a background image that would scroll using this method. Giving the illusion of 2.5D or 3D in the presentation. And don't forget to advertise this on the example presentation, this would make sozi much more attractive.

[mildred]

I'd imagine implementation as follows:

• declare a parallax layer that would be global for all frames
• find the bounding box of all the slides (excluding layers).
• transform the frame rectangle from coordinates within the bounding box to coordinates within the parallax layer
• from this transformed coordinates, we construct a layer to be displayed on the current frame.

[aumouvantsillage]

Hi, Mildred. Sorry for not answering your proposal earlier. Now that Sozi 15 is out, I will take a look at this more thoroughly.

[alperyilmaz]

There's an example parallax effect demonstration in youtube.. That's a manual implementation though..