iss-sunrise is a plymouth animated boot screen that should work on any system that uses plymouth to display an image as the system boots and before the login screen. It is based on Earth-sunrise, but here, the earth is depicted as having lights on the ground, and when the sun rises it has a KDE logo.
This is another modification of the awesome plymouth theme made by Andre "Osku" Schmidt This one uses actual images from the International Space Station to create the sundown and sunrise effect
Place the extracted files in your home or Desktop folder.
Open a terminal and copy and paste the following commands:
sudo cp -R iss-sunrise/ /usr/share/plymouth/themes/
sudo update-alternatives --install /usr/share/plymouth/themes/default.plymouth default.plymouth /usr/share/plymouth/themes/iss-sunrise/iss-sunrise.plymouth 100
sudo update-alternatives --config default.plymouth #here, choose the number of the theme you want to use then hit enter
sudo update-initramfs -u
Reboot... your system should be running the new theme.
the "offset" variable is used to set the y position of the planet top. 0 would be center, positive values go down and negative to top of screen. (all parts should use this offset)
if you scroll past the image/sprite definitions, you see some *.start and *.end values. those say at which "progress-time" (from 0 to 1) that part will be faded in.
sunGlow also has .animStart/End "progress-time", to say when to move from .startPos to .endPos on the screen