Overlay multiple images as the polyline icon in motion

[Flo1314]

Hey, thanks for this nice leaflet plugin :)

I wonder if it is possible to use (overlay) multiple pictures as the icon of a polyline in motion?

My situation is as follows: Consider I have two background images bgImage1.png and bgImage2.png and a single foreground image fgImage.png. I am now trying to overlay those images and use them as the icon of a polyline in motion. Note that I would like to change the background image on demand such that I can use for example the foreground image in combination with bgImage1.png in one place and with bgImage2.png somewhere else. In particular, I would like to avoid overlaying those images in some preprocessing step and then use the results foregroundWithBackground1.png and foregroundWithBackground2.png as the icons in the polyline in motion.

My naive starting point was to just draw two identical polylines in motion with different icons (draw background first, then foreground), such that they would overlay automatically. However, this is not a satisfactory solution because the polyline motions are (of course) not perfectly in sync.