To change the distance between the items you need to override the ItemsPanelTemplate of the CoverFlow.
Currently, the CoverFlow control uses our AutoCenterPanel that has a property called ArrangeStrategy. This property is currently set to PositionsBasedArrangeStrategy (the only one available and supported by us at this time). This strategy also exposes a property called PositionDefinitions
that is a collection of PositionDefinitions. Supported definitions at
this time are RelativeWidthPositionDefinition
and FixedWidthPositionDefinition that tell the CoverFlow how much room
it holds for each item.
The first one is for the centered item, whereas the second one is for
the left and right items that are next to the centered item. The last
one describes the rest.
In the project I am sending to you, you can find the XAML code that
sets the current configuration (the ItemsPanelTemplate with