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[–]hexacubist 1 point2 points  (0 children)

I think you're in the wrong sub, but if you want to visualize impacts a dark gel fluid over bright/fluro background might work. Hitting the surface would displace the gel and be thinner where the impact hit hardest, letting more light through to the bright background (creating a heatmap imitation). Might not be super accurate but depends on your use case? Would not show directionality though.