Before reinventing the wheel: does anyone know of a library that would
contain something akin to radio buttons but in 2D?
I don't, though I'd be interested too.
If you can make do without a visible grid of buttons, and deduce button
presses from coordinates on a plane instead, the available 2D / xy
sliders + a bit of dividing/rounding could work:
* xyslide:
https://forum.pdpatchrepo.info/topic/8656/xy-slider-controls-two-variables-at-once
* xyz-slider:
https://forum.pdpatchrepo.info/topic/13818/xyz-slider-3-d-slider-using-mouse-scrollhweel
* xy controller using data structures:
https://forum.pdpatchrepo.info/topic/2699/xy-control
* Forum thread full of useful links:
https://forum.pdpatchrepo.info/topic/10854/xy-abstraction-to-get-mouse-click-and-drag-coordinates-vanilla
* ...including in particular ELSE/slider2d
Best,
Albert.
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