Extend the symmetry feature #12
Description
Is your feature request related to a problem? Please describe
Currently the application only offers a horizontal and vertical symmetry lines which can be moved freely, lacking the ability to create other symmetry axes
Describe the solution you'd like
Add 45°/-45° symmetry options and the ability to reset the lines to the center of the image/view like in Aseprite
Describe alternatives you've considered
No response
Additional context
No response