Fusion elements in a tetris-like grid
I want circle elements to move along a grid, and when they get in adjacent positions, to look like they fuse together. So two element would make a pill-like form, 4 would make a square with rounded corners, or any form you could find in Tetris (with rounded edge). The elements can still separate or slide along each other when fused, modifying the form they make together
How would you do that ?
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